WO2013186229A1 - Tnf -alpha modulating benzimidazoles - Google Patents

Tnf -alpha modulating benzimidazoles Download PDF

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Publication number
WO2013186229A1
WO2013186229A1 PCT/EP2013/062062 EP2013062062W WO2013186229A1 WO 2013186229 A1 WO2013186229 A1 WO 2013186229A1 EP 2013062062 W EP2013062062 W EP 2013062062W WO 2013186229 A1 WO2013186229 A1 WO 2013186229A1
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WO
WIPO (PCT)
Prior art keywords
alkyl
heteroaryl
heterocycloalkyl
optionally substituted
hydroxy
Prior art date
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PCT/EP2013/062062
Other languages
French (fr)
Inventor
Daniel Christopher Brookings
Mark Daniel CALMIANO
Ellen Olivia GALLIMORE
Helen Tracey Horsley
Martin Clive Hutchings
James Andrew Johnson
Boris KROEPLIEN
Fabien Claude LECOMTE
Martin Alexander Lowe
Timothy John Norman
John Robert Porter
Joanna Rachel Quincey
James Thomas Reuberson
Matthew Duncan Selby
Michael Alan SHAW
Zhaoning Zhu
Anne Marie Foley
Original Assignee
Ucb Pharma S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from GB201210233A external-priority patent/GB201210233D0/en
Application filed by Ucb Pharma S.A. filed Critical Ucb Pharma S.A.
Priority to BR112014030940-0A priority Critical patent/BR112014030940B1/en
Priority to US14/406,848 priority patent/US9550737B2/en
Priority to CA2874303A priority patent/CA2874303C/en
Priority to CN201380037400.3A priority patent/CN104428293B/en
Priority to JP2015516594A priority patent/JP6359008B2/en
Priority to EA201401350A priority patent/EA028626B1/en
Priority to EP13727932.9A priority patent/EP2858983B1/en
Priority to ES13727932.9T priority patent/ES2675583T3/en
Publication of WO2013186229A1 publication Critical patent/WO2013186229A1/en

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    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A61K31/4164—1,3-Diazoles
    • A61K31/4184—1,3-Diazoles condensed with carbocyclic rings, e.g. benzimidazoles
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    • A61K31/5375—1,4-Oxazines, e.g. morpholine
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    • A61K31/55—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole
    • A61K31/551—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole having two nitrogen atoms, e.g. dilazep
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    • C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
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    • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
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Definitions

  • the present invention relates to a class of benzimidazole derivatives, and to their use in therapy. These compounds are modulators of the signalling of TNFa, and are accordingly of benefit as pharmaceutical agents, especially in the treatment of adverse inflammatory and autoimmune disorders, neurological and neurodegenerative disorders, pain and nociceptive disorders, cardiovascular disorders, metabolic disorders, ocular disorders, and oncological disorders.
  • TNFa is the prototypical member of the Tumour Necrosis Factor (TNF) superfamily of proteins that share a primary function of regulating cell survival and cell death.
  • TNF Tumour Necrosis Factor
  • One structural feature common to all known members of the TNF superfamily is the formation of trimeric complexes that bind to, and activate, specific TNF superfamily receptors.
  • TNFa exists in soluble and transmembrane forms and signals through two receptors, known as TNFR1 and TNFR2, with distinct functional endpoints.
  • Typical macromolecular TNFa inhibitors include anti-TNFa antibodies; and soluble TNFa receptor fusion proteins.
  • anti-TNFa antibodies include fully human antibodies such as adalimumab (Humira®) and golimumab
  • chimeric antibodies such as infliximab (Remicade®), and pegylated Fab' fragments such as certulizumab pegol (Cimzia®).
  • An example of a commercially available soluble TNFa receptor fusion protein is etanercept (Enbrel®).
  • TNF superfamily members including TNFa itself, are implicated in a variety of physiological and pathological functions that are believed to play a part in a range of conditions of significant medical importance (see, for example, M.G. Tansey & D.E. Szymkowski, Drug Discovery Today, 2009, 14, 1082-1088; and F.S. Carneiro et al., J. sexual Medicine, 2010, 7, 3823-3834).
  • the compounds in accordance with the present invention being potent modulators of human TNFa activity, are therefore beneficial in the treatment and/or prevention of various human ailments. These include autoimmune and inflammatory disorders;
  • cardiovascular disorders cardiovascular disorders; metabolic disorders; ocular disorders; and oncological disorders.
  • the compounds in accordance with the present invention may be beneficial as pharmacological standards for use in the development of new biological tests and in the search for new pharmacological agents.
  • the compounds of this invention may be useful as radioligands in assays for detecting pharmacologically active compounds.
  • certain compounds of this invention may be useful for coupling to a fluorophore to provide fluorescent conjugates that can be utilised in assays (e.g. a fluorescence polarisation assay) for detecting pharmacologically active compounds.
  • the compounds in accordance with the present invention potently neutralise the activity of T Fa in a commercially available HEK-293 derived reporter cell line known as HEK-BlueTM CD40L.
  • This cell line is a stable trans fectant expressing SEAP (secreted alkaline phosphatase) under the control of the IFNP minimal promoter fused to five NF-KB binding sites. Secretion of SEAP by these cells is stimulated in a concentration-dependent manner by TNFa.
  • the compounds of the present invention When tested in the HEK-293 bioassay, the compounds of the present invention exhibit an IC 50 value of 50 ⁇ or less, generally of 20 ⁇ or less, usually of 5 ⁇ or less, typically of 1 ⁇ or less, suitably of 500 nM or less, ideally of 100 nM or less, and preferably of 20 nM or less (the skilled person will appreciate that a lower IC 50 figure denotes a more active compound).
  • the present invention provides a compound of formula (I) or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof:
  • E represents a covalent bond; or E represents -S(0) 2 - or -N(R 4 )-; or E represents an optionally substituted straight or branched Ci_ 4 alkylene chain;
  • Q represents a covalent bond; or Q represents -0-, -S-, -S(O)-, -S(0) 2 -, -N(R 5 )-, -C(0)N(R 5 )-, -N(R 5 )C(0)-, -S(0) 2 N(R 5 )- or -N(R 5 )S(0) 2 -; or Q represents an optionally substituted straight or branched Ci_ 6 alkylene chain optionally comprising one, two or three heteroatom-containing linkages independently selected from -0-, -S-, -S(0)-, -S(0) 2 -, -N(R 5 )-, -C(0)N(R 5 )-, -N(R 5 )C(0)-, -S(0) 2 N(R 5 )- and -N(R 5 )S(0) 2 -;
  • Y represents C 3 -7 cycloalkyl, aryl, C 3 -7 heterocycloalkyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents;
  • Z represents hydrogen, halogen or trifluoromethyl; or Z represents Ci_ 6 alkyl, C 3 _ 7 cycloalkyl, aryl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents - ⁇ - ⁇ or -Z 1 -C(0)-Z 2 , either of which moieties may be optionally substituted by one or more substituents;
  • Z 1 represents a divalent radical derived from an aryl, C 3 _ 7 heterocycloalkyl or heteroaryl group
  • Z 2 represents aryl, C 3-7 heterocycloalkyl, C 3-7 heterocycloalkenyl,
  • R 1 , R 2 and R 3 independently represent hydrogen, halogen, cyano, nitro, hydroxy, trifluoromethyl, trifluoromethoxy, -OR a , -SR a , -SOR a , -S0 2 R a , -OS0 2 R a , -SF 5 , -NR b R c , -NR c COR d , -NR c C0 2 R d , -NHCONR b R c , -NR c S0 2 R e , -N(S0 2 R e ) 2 , -NHS0 2 NR b R c , -COR d , -C0 2 R d , -CONR b R c , -CON(OR a )R b or -S0 2 NR b R c ; or Ci_ 6 alkyl, C 2 _ 6 alkenyl, C 2
  • heterocycloalkenyl C 4 _g heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl,
  • R 4 and R 5 independently represent hydrogen or Ci_ 6 alkyl; R a represents trifluoromethyl; or Ci_ 6 alkyl, C 3 _ 7 cycloalkyl, C 3 _ 7 cycloalkyl(Ci_ 6 )- alkyl, aryl, aryl(Ci_ 6 )alkyl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkyl(Ci_ 6 )alkyl, heteroaryl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents;
  • R b and R c independently represent hydrogen or trifluoromethyl; or Ci_ 6 alkyl, C 3 _ 7 cycloalkyl, C 3 _ 7 cycloalkyl(Ci_ 6 )alkyl, aryl, aryl(Ci_ 6 )alkyl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkyl(Ci_6)alkyl, heteroaryl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents; or
  • R b and R c when taken together with the nitrogen atom to which they are both attached, represent azetidin-l-yl, pyrrolidin-l-yl, oxazolidin-3-yl, isoxazolidin-2-yl, thiazolidin-3-yl, isothiazolidin-2-yl, piperidin-l-yl, morpholin-4-yl, thiomorpholin-4-yl, piperazin-l-yl, homopiperidin-l-yl, homomorpholin-4-yl or homopiperazin-l-yl, any of which groups may be optionally substituted by one or more substituents;
  • R d represents hydrogen; or Ci_ 6 alkyl, C 3 _ 7 cycloalkyl, aryl, C 3 _ 7 heterocycloalkyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; and
  • R e represents Ci_ 6 alkyl, aryl or heteroaryl, any of which groups may be optionally substituted by one or more substituents;
  • the present invention provides a compound of formula (I) as defined above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, for use in the treatment and/or prevention of an inflammatory or autoimmune disorder, a neurological or neurodegenerative disorder, pain or a nociceptive disorder, a cardiovascular disorder, a metabolic disorder, an ocular disorder, or an oncological disorder.
  • the present invention also provides a method for the treatment and/or prevention of disorders for which the administration of a modulator of TNFa function is indicated which comprises administering to a patient in need of such treatment an effective amount of a compound of formula (I) as defined above or an N-oxide thereof, or a
  • the present invention provides a method for the treatment and/or prevention of an inflammatory or autoimmune disorder, a neurological or neurodegenerative disorder, pain or a nociceptive disorder, a cardiovascular disorder, a metabolic disorder, an ocular disorder, or an oncological disorder, which comprises administering to a patient in need of such treatment an effective amount of a compound of formula (I) as defined above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof.
  • any of the groups in the compounds of formula (I) above is stated to be optionally substituted, this group may be unsubstituted, or substituted by one or more substituents. Typically, such groups will be unsubstituted, or substituted by one or two substituents.
  • Suitable pharmaceutically acceptable salts of the compounds of use in this invention include acid addition salts which may, for example, be formed by mixing a solution of the compound of use in the invention with a solution of a pharmaceutically acceptable acid such as hydrochloric acid, sulphuric acid, methanesulphonic acid, fumaric acid, maleic acid, succinic acid, acetic acid, benzoic acid, citric acid, tartaric acid or phosphoric acid.
  • a pharmaceutically acceptable acid such as hydrochloric acid, sulphuric acid, methanesulphonic acid, fumaric acid, maleic acid, succinic acid, acetic acid, benzoic acid, citric acid, tartaric acid or phosphoric acid.
  • suitable pharmaceutically acceptable salts thereof may include alkali metal salts, e.g. sodium or potassium salts; alkaline earth metal salts, e.g. calcium or magnesium salts; ammonium salts; and salts formed with suitable organic ligands, e.g. quaternary ammonium salts.
  • solvates of the compounds of formula (I) above include within its scope solvates of the compounds of formula (I) above.
  • Such solvates may be formed with common organic solvents, e.g. hydrocarbon solvents such as benzene or toluene; chlorinated solvents such as chloroform or dichloromethane; alcoholic solvents such as methanol, ethanol or isopropanol; ethereal solvents such as diethyl ether or tetrahydrofuran; or ester solvents such as ethyl acetate.
  • the solvates of the compounds of formula (I) may be formed with water, in which case they will be hydrates.
  • the present invention also includes co-crystals within its scope.
  • co-crystal is used to describe the situation where neutral molecular components are present within a crystalline compound in a definite stoichiometric ratio.
  • the preparation of pharmaceutical co-crystals enables modifications to be made to the crystalline form of an active pharmaceutical ingredient, which in turn can alter its physicochemical properties without compromising its intended biological activity (see Pharmaceutical Salts and Co- crystals, ed. J. Wouters & L. Quere, RSC Publishing, 2012).
  • pharmaceutical ingredient include Z-ascorbic acid, citric acid, glutaric acid, urea and nicotinamide.
  • Suitable alkyl groups which may be present on the compounds of use in the invention include straight-chained and branched Ci_ 6 alkyl groups, for example Ci_ 4 alkyl groups. Typical examples include methyl and ethyl groups, and straight-chained or branched propyl, butyl and pentyl groups. Particular alkyl groups include methyl, ethyl, n- propyl, isopropyl, n-butyl, sec -butyl, isobutyl, tert-butyl, 2,2-dimethylpropyl and 3- methylbutyl. Derived expressions such as "Ci_ 6 alkoxy", “Ci_ 6 alkylthio", "Ci_ 6 alkylsulphonyl” and "C 1-6 alkylamino" are to be construed accordingly.
  • Ci_ 4 alkylene chain refers to a divalent straight or branched alkylene chain containing 1 to 4 carbon atoms. Typical examples include methylene, ethylene, methylmethylene, ethylmethylene and dimethylmethylene.
  • Suitable C 2 _ 6 alkenyl groups include vinyl and allyl.
  • Suitable C 2 _ 6 alkynyl groups include ethynyl and propargyl.
  • Suitable C3-7 cycloalkyl groups which may comprise benzo-fused analogues thereof, include cyclopropyl, cyclobutyl, benzocyclobutenyl, cyclopentyl, indanyl, cyclohexyl and cycloheptyl.
  • Suitable C 4 _ 7 cycloalkenyl groups include cyclobutenyl, cyclopentenyl,
  • Typical bicycloalkyl groups include bicyclo[3.1.0]hexanyl.
  • Suitable aryl groups include phenyl and naphthyl, preferably phenyl.
  • Suitable aryl(Ci_ 6 )alkyl groups include benzyl, phenylethyl, phenylpropyl and naphthy lmethy 1.
  • C 3 _ 7 heterocycloalkyl refers to saturated monocyclic rings containing 3 to 7 carbon atoms and at least one heteroatom selected from oxygen, sulphur and nitrogen, and may comprise benzo-fused analogues thereof.
  • Suitable heterocycloalkyl groups include oxetanyl, azetidinyl, tetrahydrofuranyl, dihydrobenzo- furanyl, dihydrobenzothienyl, pyrrolidinyl, indolinyl, isoindolinyl, oxazolidinyl, thiazolidinyl, isothiazolidinyl, imidazolidinyl, tetrahydropyranyl, chromanyl,
  • tetrahydrothiopyranyl piperidinyl, 1,2,3,4-tetrahydroquinolinyl, 1,2,3,4-tetrahydro- isoquinolinyl, piperazinyl, 1,2,3,4-tetrahydroquinoxalinyl, homopiperazinyl, morpholinyl, benzoxazinyl, thiomorpholinyl, diazepanyl and azocanyl.
  • C 3-7 heterocycloalkenyl refers to monounsaturated or polyunsaturated monocyclic rings containing 3 to 7 carbon atoms and at least one heteroatom selected from oxygen, sulphur and nitrogen, and may comprise benzo-fused analogues thereof.
  • Suitable heterocycloalkenyl groups include thiazolinyl, imidazolinyl, dihydropyranyl, dihydrothiopyranyl and 1,2,3,6-tetrahydropyridinyl.
  • Typical heterobicycloalkyl groups include quinuclidinyl, 3-azabicyclo[3.1.0]- hexanyl, 5-aza-2-oxabicyclo[2.2.1]heptanyl, 6-azabicyclo[3.2.0]heptanyl, 3-azabicyclo- [4.1.0]heptanyl, 5-aza-2-oxabicyclo[2.2.2]octanyl, 3-azabicyclo[3.2.1]octanyl, 8- azabicyclo[3.2.1]octanyl, 3,8-diazabicyclo[3.2.1]octanyl and 3,9-diazabicyclo[4.2.1]- nonanyl.
  • Suitable spiroheterocycloalkyl groups include 5-azaspiro[2.4]heptanyl, 2-oxa-6- azaspiro[3.3]heptanyl, 2-oxa-6-azaspiro[3.4]octanyl, 2-oxa-6-azaspiro[3.5]nonanyl, 2-oxa- 7-azaspiro[3.5]nonanyl and 7-oxa-2-azaspiro[3.5]nonanyl.
  • Suitable heteroaryl groups include furyl, benzofuryl, dibenzofuryl, thienyl, thieno[2,3-c]pyrazolyl, thieno[3,4-£][l,4]dioxinyl, benzothienyl, dibenzothienyl, pyrrolyl, indolyl, pyrrolo[2,3-£]pyridinyl, pyrrolo[3,4-£]pyridinyl, pyrrolo[3,2-c]pyridinyl, pyrazolyl, pyrazolo[l,5-a]pyridinyl, pyrazolo[3,4-d]pyrimidinyl, indazolyl, 4,5,6,7- tetrahydroindazolyl, oxazolyl, benzoxazolyl, isoxazolyl, thiazolyl, benzothiazolyl, isothiazolyl, imidazolyl, benzimi
  • halogen as used herein is intended to include fluorine, chlorine, bromine and iodine atoms, typically fluorine, chlorine or bromine.
  • each individual atom present in formula (I), or in the formulae depicted hereinafter may in fact be present in the form of any of its naturally occurring isotopes, with the most abundant isotope(s) being preferred.
  • each individual hydrogen atom present in formula (I), or in the formulae depicted hereinafter may be present as a 1H, 2 H (deuterium) or 3 H (tritium) atom, preferably 1H.
  • each individual carbon atom present in formula (I), or in the formulae depicted hereinafter may be present as a 12 C, 13 C or 14 C atom, preferably 12 C.
  • the present invention provides a compound of formula (I) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, wherein
  • Q represents -0-, -S-, -S(O)-, -S(0) 2 -, -N(R 5 )-, -C(0)N(R 5 )-, -N(R 5 )C(0)-,
  • Ci_ 6 alkylene chain optionally comprising one, two or three heteroatom- containing linkages independently selected from -0-, -S-, -S(O)-, -S(0) 2 -, -N(R 5 )-, -C(0)N(R 5 )-, -N(R 5 )C(0)-, -S(0) 2 N(R 5 )- and -N(R 5 )S(0) 2 -;
  • Z represents C 3 _ 7 cycloalkyl, aryl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents -Z l -Z 2 or -Z 1 -C(0)-Z 2 , either of which moieties may be optionally substituted by one or more substituents; and
  • E, Y, R 1 , R 2 , R 3 , R 5 , Z 1 and Z 2 are as defined above.
  • the present invention provides a compound of formula (I) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, wherein R 1 represents halogen or cyano; or Ci_ 6 alkyl, C 2 _ 6 alkenyl, C 2 _ 6 alkynyl, C 3 _ 7 cycloalkyl, C 4 _ 7 cycloalkenyl, C 3 _ 7 cycloalkyl(Ci_ 6 )alkyl, aryl, aryl(Ci_ 6 )alkyl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkyl(Ci_6)alkyl, C 3 _ 7 heterocycloalkenyl, C 4 _9 heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl, (C 3 _ 7 )hetero
  • E, Q, Y, Z, R 2 and R 3 are as defined above.
  • the present invention provides a compound of formula (I) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a co-crystal thereof, wherein
  • R 1 represents halogen or cyano; or Ci_ 6 alkyl, C 2 _ 6 alkenyl, C 2 _ 6 alkynyl, C 3 _ 7 cycloalkyl, C 4 _ 7 cycloalkenyl, C 3 _ 7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkyl(Ci_6)alkyl, C 3 _ 7 heterocycloalkenyl, C 4 _9 heterobicycloalkyl, heteroaryl, heteroaryl(Ci_ 6 )alkyl, (C 3 _ 7 )heterocycloalkyl(Ci_ 6 )alkyl- aryl-, heteroaryl(C 3 _ 7 )heterocycloalkyl-, (C 3 _ 7 )cycloalkyl-heteroaryl-, (C 3
  • E, Q, Y, Z, R 2 and R 3 are as defined above.
  • the present invention provides a compound of formula (I) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, wherein
  • R 1 represents halogen or cyano; or Ci_ 6 alkyl, C 2 _ 6 alkenyl, C 2 _ 6 alkynyl, C 3 _ 7 cycloalkyl, C 4 _ 7 cycloalkenyl, C 3 _ 7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkyl(Ci_6)alkyl, C 3 _ 7 heterocycloalkenyl, C 4 _9 heterobicycloalkyl, heteroaryl, heteroaryl(Ci_ 6 )alkyl, (C 3 _ 7 )heterocycloalkyl(Ci_ 6 )alkyl- aryl-, heteroaryl(C 3 _ 7 )heterocycloalkyl-, (C 4 _ 7 )cycloalkenyl -heteroaryl-, (
  • E, Q, Y, Z, R 2 and R 3 are as defined above.
  • the compounds in accordance with the invention comprise an optionally substituted straight or branched alkylene chain
  • typical values thereof include methylene (-CH 2 -), (methyl)methylene, ethylene (-CH 2 CH 2 -), (ethyl)methylene, (dimethyl)- methylene, (methyl)ethylene, propylene (-CH 2 CH 2 CH 2 -), (propyl)methylene and (dimethyl)ethylene, any of which chains may be optionally substituted by one or more substituents.
  • such chains are unsubstituted, monosubstituted or disubstituted.
  • such chains are unsubstituted or monosubstituted.
  • such chains are unsubstituted.
  • such chains are monosubstituted.
  • such chains are disubstituted.
  • Examples of typical substituents on the alkylene chain which may be present in a compound in accordance with the invention include halogen, trifluoromethyl, oxo, hydroxy, Ci_ 6 alkoxy, trifluoromethoxy, amino, Ci_ 6 alkylamino, di(Ci_6)alkylamino, aminocarbonyl, Ci_ 6 alkylaminocarbonyl and di(Ci_6)alkylaminocarbonyl.
  • Suitable substituents on the alkylene chain which may be present in a compound in accordance with the invention include halogen, trifluoromethyl, hydroxy, Ci_6 alkoxy and amino.
  • substituents on the alkylene chain which may be present in a compound in accordance with the invention include fluoro, trifluoromethyl, hydroxy, methoxy and amino.
  • E represents a covalent bond; or E represents -N(R 4 )-; or E represents an optionally substituted straight or branched Ci_ 4 alkylene chain.
  • E represents -N(R 4 )-; or E represents an optionally substituted straight or branched Ci_ 4 alkylene chain.
  • E represents an optionally substituted straight or branched Ci_4 alkylene chain.
  • E represents a covalent bond; or E represents -N(R 4 )-; or E represents methylene (-CH 2 -), (methyl)methylene or (ethyl)methylene, any of which groups may be optionally substituted by one or more substituents.
  • Suitable values of E include -N(R 4 )-, -CH 2 -, -CH(CH 3 )- and -CH(CH 2 CH 3 )-; or E may represent a covalent bond.
  • E represents a covalent bond, whereby the integer Y is attached directly to the benzimidazole nucleus.
  • E represents -S(0) 2 -.
  • E represents -N(R 4 )-.
  • E represents -CH 2 -.
  • E represents -CH(CH 3 )-.
  • the -CH(CH 3 )- linkage represented by E is in the (S) stereochemical configuration.
  • E represents -CH(CH 2 CH 3 )-.
  • Q represents a covalent bond, whereby the integer Z is attached directly to the benzimidazole nucleus.
  • Q represents -0-, -S-, -S(O)-, -S(0) 2 -, -N(R 5 )-,
  • Q represents -0-.
  • Q represents -S-.
  • Q represents -S(O)-.
  • Q represents -S(0) 2 -.
  • Q represents -N(R 5 )-.
  • Q represents -C(0)N(R 5 )-.
  • Q represents -N(R 5 )C(0)-.
  • Q represents -S(0) 2 N(R 5 )-.
  • Q represents -N(R 5 )S(0) 2 -.
  • Q represents -N(R 5 )S(0) 2 -.
  • Q represents an optionally substituted straight or branched Ci_6 alkylene chain optionally comprising one, two or three heteroatom-containing linkages independently selected from -0-, -S-, -S(O)-, -S(0) 2 -, -N(R 5 )-, -C(0)N(R 5 )-, -N(R 5 )C(0)-, -S(0) 2 N(R 5 )- and -N(R 5 )S(0) 2 -.
  • Q represents an optionally substituted straight or branched Ci_ 6 alkylene chain.
  • Q represents an optionally substituted straight or branched Ci_6 alkylene chain comprising one heteroatom-containing linkage independently selected from -0-, -S-, -S(O)-, -S(0) 2 -, -N(R 5 )-, -C(0)N(R 5 )-, -N(R 5 )C(0)-, -S(0) 2 N(R 5 )- and -N(R 5 )S(0) 2 -.
  • Q represents an optionally substituted straight or branched Ci_ 6 alkylene chain comprising two heteroatom- containing linkages independently selected from -0-, -S-, -S(0)-, -S(0) 2 -, -N(R 5 )-, -C(0)N(R 5 )-, -N(R 5 )C(0)-, -S(0) 2 N(R 5 )- and -N(R 5 )S(0) 2 -.
  • Q represents an optionally substituted straight or branched Ci_ 6 alkylene chain comprising three heteroatom-containing linkages independently selected from -0-, -S-, -S(O)-, -S(0) 2 -, -N(R 5 )-, -C(0)N(R 5 )-, -N(R 5 )C(0)-, -S(0) 2 N(R 5 )- and -N(R 5 )S(0) 2 -.
  • Q represents an optionally substituted straight or branched Ci_ 6 alkylene chain comprising one, two or three heteroatom-containing linkages independently selected from -0-, -S-, -N(R 5 )-, -C(0)N(R 5 )- and -N(R 5 )C(0)-.
  • Q represents a covalent bond; or Q represents -S(0)- or -S(0) 2 -; or Q represents an optionally substituted straight or branched Ci_ 6 alkylene chain optionally comprising one or two heteroatom-containing linkages selected from -0-, -S-, -N(R 5 )-, -C(0)N(R 5 )-, and -N(R 5 )C(0)-.
  • Selected examples of typical substituents on the linkage represented by Q include halogen, trifluoromethyl, hydroxy, Ci_ 6 alkoxy and amino.
  • Q represents a covalent bond; or Q represents -S(0)- or -S(0) 2 -; or Q represents -CH 2 -, -CH(F)-, -CF 2 -, -CH(CH 3 )-, -CH(OH)-, -CH(OCH 3 )-, -CH(NH 2 )-, -CH 2 CH 2 -, -CH(OH)CH 2 -, -CH(OH)CF 2 -, -CH(OCH 3 )CH 2 -, -CH 2 0-, -CH(CH 3 )0-, -C(CH 3 ) 2 0-, -CH(CH 2 CH 3 )0-, -CH(CF 3 )0-, -CH 2 S-, -CH 2 N(R 5 )-, -CH 2 CH 2 CH 2 -, -CH(OH)CH 2 CH 2 -, -CH(OCH 3 )CH 2 CH 2 -, -CH 2 CH 2
  • Q represents -CH 2 -, -CH 2 0-, -CH 2 S-, and -CH 2 OCH 2 -.
  • Q represents -CH 2 -.
  • Q represents -CH 2 0-.
  • Q represents -CH 2 S-.
  • Q represents
  • Y represents C 3 _ 7 cycloalkyl, aryl or heteroaryl, any of which groups may be optionally substituted by one or more substituents. Additionally, Y may represent C 3 _7 heterocycloalkyl, which group may be optionally substituted by one or more substituents.
  • Y represents aryl or heteroaryl, either of which groups may be optionally substituted by one or more substituents. Additionally, Y may represent C3-7 heterocycloalkyl, which group may be optionally substituted by one or more substituents.
  • Y represents optionally substituted C3_ 7 cycloalkyl. In one aspect of that embodiment, Y represents unsubstituted C 3 _ 7 cycloalkyl. In another aspect of that embodiment, Y represents monosubstituted C 3 _ 7 cycloalkyl. In a further aspect of that embodiment, Y represents disubstituted C 3 _ 7 cycloalkyl.
  • Y represents optionally substituted aryl. In one aspect of that embodiment, Y represents unsubstituted aryl. In another aspect of that embodiment, Y represents monosubstituted aryl. In a further aspect of that embodiment, Y represents disubstituted aryl.
  • Y represents optionally substituted C 3 _ 7 heterocycloalkyl. In one aspect of that embodiment, Y represents unsubstituted C 3 _ 7 heterocycloalkyl. In another aspect of that embodiment, Y represents monosubstituted C 3 _ 7 heterocycloalkyl. In a further aspect of that embodiment, Y represents disubstituted C 3 _ 7 heterocycloalkyl.
  • Y represents optionally substituted heteroaryl. In one aspect of that embodiment, Y represents unsubstituted heteroaryl. In another aspect of that embodiment, Y represents monosubstituted heteroaryl. In a further aspect of that embodiment, Y represents disubstituted heteroaryl.
  • Y represents benzocyclobutenyl, phenyl, thiazolyl or pyridinyl, any of which groups may be optionally substituted by one or more substituents.
  • Y may represent pyrrolidinyl, thieno[2,3-c]pyrazolyl, indazolyl, isoxazolyl and imidazo[2,l- £]thiazolyl, any of which groups may be optionally substituted by one or more
  • Y represents phenyl, which group may be optionally substituted by one or more substituents.
  • Y represents thiazolyl, especially thiazol-4-yl, which group may be optionally substituted by one or more substituents.
  • Examples of optional substituents which may be present on the moiety Y include one, two or three substituents independently selected from halogen, cyano, nitro, Ci_ 6 alkyl, trifluoromethyl, hydroxy, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_ 6 alkylthio, Ci_ 6 alkylsulfmyl, Ci_ 6 alkylsulfonyl, amino, Ci_ 6 alkylamino, di(Ci_ 6 )alkyl- amino, arylamino, C 2 _ 6 alkylcarbonylamino, Ci_ 6 alkylsulfonylamino, formyl, C 2 _ 6 alkylcarbonyl, C 3 -6 cycloalkylcarbonyl, C 3 -6 heterocycloalkylcarbonyl, carboxy, C 2 _ 6 alkoxycarbonyl, aminocarbonyl, Ci_ 6 alkylaminocarbonyl, di(Ci_6)alky
  • Typical examples of optional substituents on the moiety Y include halogen, Ci_ 6 alkyl, trifluoromethyl, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy and amino.
  • Additional examples include benzyl and methylenedioxy.
  • substituents on the moiety Y include fluoro, chloro, bromo, cyano, nitro, methyl, isopropyl, trifluoromethyl, hydroxy, methoxy, difluoromethoxy, trifluoromethoxy, methylthio, methylsulfmyl, methylsulfonyl, amino, methylamino, tert- butylamino, dimethylamino, phenylamino, acetylamino, methylsulfonylamino, formyl, acetyl, cyclopropylcarbonyl, azetidinylcarbonyl, pyrrolidinylcarbonyl, piperidinyl- carbonyl, piperazinylcarbonyl, morpholinylcarbonyl, carboxy, methoxycarbonyl, aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminosulfonyl, methylaminos
  • Typical examples of particular substituents on the moiety Y include fluoro, chloro, methyl, trifluoromethyl, methoxy, difluoromethoxy, trifluoromethoxy and amino.
  • Additional examples include bromo, benzyl, ethoxy and methylenedioxy.
  • Suitable values of Y include benzocyclobutenyl, phenyl, fluorophenyl (including 2-fluorophenyl, 3 -fluorophenyl and 4-fluorophenyl), chlorophenyl (including 2-chloro- phenyl, 3 -chlorophenyl and 4-chlorophenyl), difluorophenyl (including 2,6-difluoro- phenyl), (chloro)(fluoro)phenyl (including 5-chloro-2-fluorophenyl and 2-chloro-5- fluorophenyl), dichlorophenyl (including 2,5-dichlorophenyl and 2,6-dichlorophenyl), methylphenyl (including 4-methylphenyl), dimethylphenyl (including 2,5-dimethylphenyl and 2,6-dimethylphenyl), (trifluoromethyl)phenyl [including 2-(trifluoromethyl)phenyl], (chloro)(
  • Additional values include (fluoro)(methoxy)phenyl, (difluoro)(difluoromethoxy)phenyl, (dichloro)(difluoromethoxy)phenyl, (bromo)(difluoromethoxy)phenyl, (difluoro- methoxy)(methyl)phenyl, (difluoromethoxy)(methoxy)phenyl, bis(difluoromethoxy)- phenyl, (difluoromethoxy)(methylenedioxyoxy)phenyl, (chloro)(trifluoromethoxy)phenyl, benzylpyrrolidinyl, (methyl)(trifluoromethyl)thieno[2,3-c]pyrazolyl, methylindazolyl, methylisoxazolyl, dimethylthiazolyl, (methyl)(trifluoromethyl)thiazolyl, (ethoxy)- (methyl)thiazolyl and chloroimi
  • Y represents 2-(difluoromethoxy)phenyl.
  • Z represents hydrogen
  • Z is other than hydrogen
  • Z represents hydrogen; or Z represents Ci_ 6 alkyl, C3-7 cycloalkyl, aryl, C 3 _7 heterocycloalkyl, C 3 _7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents - ⁇ - ⁇ or -Z 1 -C(0)-Z 2 , either of which moieties may be optionally substituted by one or more substituents.
  • Z represents Ci_ 6 alkyl, C 3 -7 cycloalkyl, aryl, C 3 -7 heterocycloalkyl, C 3 _7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents -Z l -Z 2 or -Z 1 -C(0)-Z 2 , either of which moieties may be optionally substituted by one or more substituents.
  • Z represents hydrogen, fluoro or trifluoromethyl; or Z represents methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-bvXy ⁇ , cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, phenyl, tetrahydrofuranyl, pyrrolidinyl, indolinyl, tetrahydropyranyl, piperidinyl, 1,2,3,4-tetrahydroquinolinyl, morpholinyl, azocanyl, thiazolinyl, furyl, thienyl, pyrazolyl, 4,5,6,7-tetrahydroindazolyl, benzoxazolyl, isoxazolyl, thiazolyl, benzothiazolyl, imidazolyl, benzimidazolyl, [
  • Z may represent dihydro- benzothienyl, dihydroisoindolinyl, 1,2,3,4-tetrahydroisoquinolinyl, pyridazinyl or triazinyl, any of which groups may be optionally substituted by one or more substituents.
  • the moiety Z 1 represents a divalent radical derived from an aryl, C3_ 7 heterocyclo- alkyl or heteroaryl group, any of which groups may be optionally substituted by one or more substituents.
  • the moiety Z 1 represents a divalent radical derived from a phenyl, pyrrolidinyl, piperazinyl, pyrazolyl, thiazolyl, triazolyl, tetrazolyl or pyridinyl group, any of which groups may be optionally substituted by one or more substituents.
  • Typical values of the moiety Z 1 include the groups of formula (Za), (Zb), (Zc), (Zd), (Ze), (Zf), (Zg), (Zh) and (Zj):
  • the moiety Z 2 may represent aryl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents.
  • Z 2 may represent (C 4 _9)heterobicycloalkyl or
  • Z 2 represents phenyl, pyrrolidinyl, oxazolidinyl, imidazolidinyl, morpholinyl, imidazolinyl, thiazolyl, imidazolyl, tetrazolyl or pyridinyl, any of which groups may be optionally substituted by one or more substituents.
  • Z 2 may represent azetidinyl, isothiazolidinyl, piperidinyl, piperazinyl, 6-azabicyclo[3.2.0]- heptanyl, 2-oxa-6-azaspiro[3.4]octanyl, triazolyl or pyrimidinyl, any of which groups may be optionally substituted by one or more substituents.
  • optional substituents which may be present on the moiety Z, Z 1 or Z 2 include one, two or three substituents independently selected from halogen, cyano, nitro, Ci_6 alkyl, trifluoromethyl, oxo, hydroxy, hydroxy(Ci_ 6 )alkyl, Ci_ 6 alkoxy, difluoro- methoxy, trifluoromethoxy, Ci_ 3 alkylenedioxy, Ci_ 6 alkylthio, Ci_ 6 alkylsulfmyl, Ci_ 6 alkylsulfonyl, amino, Ci_ 6 alkylamino, di(Ci_6)alkylamino, di(Ci_6)alkylamino(Ci_6)alkyl, C 2 -6 alkylcarbonylamino, Ci_ 6 alkylsulfonylamino, formyl, C 2 - 6 alkylcarbonyl, carboxy, C 2 -6 alkoxycarbonyl, aminocarbonyl, Ci_ 6 alky
  • Additional examples include thioxo, N- [(C 1 _ 6 )-alkyl] -N-[(C 1 _ 6 )alkylcarbonyl] amino, N-[(C 1 _ 6 )alkyl] -N-[(C 1 _ 6 )alkylsulfonyl] amino, cyano(Ci_6)alkylaminocarbonyl and (C 3 _ 7 )cycloalkylureido.
  • Typical examples of optional substituents on the moiety Z, Z 1 or Z 2 include halogen, cyano, nitro, Ci_ 6 alkyl, trifluoromethyl, oxo, hydroxy, hydroxy(Ci_6)alkyl, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_ 3 alkylenedioxy, Ci_ 6 alkylsulfonyl, amino, di(Ci_6)alkylamino, di(Ci_6)alkylamino(Ci_6)alkyl, C 2 _ 6 alkylcarbonylamino, Ci_ 6 alkyl- sulfonylamino, formyl, carboxy, C 2 _ 6 alkoxycarbonyl, aminocarbonyl, Ci_ 6 alkylamino- carbonyl, di(Ci_6)alkylaminocarbonyl, aminocarbonylamino and hydrazinocarbonyl.
  • Additional examples include thioxo, Ci_ 6 alkylthio, N-[(Ci_6)alkyl]-N-[(Ci_ 6 )alkyl- carbonyl] amino, N- [(C i _ 6 )-alkyl] -N-[(C i _6)alkylsulfonyl] amino, cyano(C i _ 6 )alkylamino- carbonyl, aminosulfonyl and (C3_7)cycloalkylureido.
  • Examples of particular substituents on the moiety Z, Z 1 or Z 2 include fluoro, chloro, bromo, cyano, nitro, methyl, ethyl, isopropyl, trifluoromethyl, oxo, hydroxy, hydroxymethyl, methoxy, difluoromethoxy, trifluoromethoxy, methylenedioxy, methylthio, methylsulfmyl, methylsulfonyl, amino, methylamino, tert-butylamino, dimethylamino, dimethylaminomethyl, dimethylaminoethyl, acetylamino, methylsulfonyl- amino, formyl, acetyl, carboxy, methoxycarbonyl, tert-butoxycarbonyl, aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminosulfonyl, methylaminosulfonyl, dimethylaminosulfony
  • Additional examples include thioxo, ethoxy, N-acetyl-N-methylamino, N-methyl-N-(methylsulfonyl)- amino, cyanomethylaminocarbonyl and cyclopropylureido.
  • Typical examples of particular substituents on the moiety Z, Z 1 or Z 2 include fluoro, chloro, bromo, cyano, nitro, methyl, ethyl, trifluoromethyl, oxo, hydroxy, hydroxymethyl, methoxy, difluoromethoxy, trifluoromethoxy, methylenedioxy, methylsulfonyl, amino, dimethylamino, dimethylaminomethyl, dimethylaminoethyl, acetylamino, methylsulfonylamino, formyl, carboxy, methoxycarbonyl, tert- butoxycarbonyl, aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminocarbonylamino and hydrazinocarbonyl.
  • Additional examples include thioxo, methylthio, ethoxy, N-acetyl-N-methylamino, N-methyl-N-(methylsulfonyl)amino, cyanomethylaminocarbonyl, aminosulfonyl and cyclopropylureido.
  • Typical values of Z 2 include phenyl, hydroxyphenyl, oxopyrrolidinyl, dioxo- pyrrolidinyl, (hydroxy)(oxo)pyrrolidinyl, (amino)(oxo)pyrrolidinyl, (oxo)oxazolidinyl, oxoimidazolidinyl, morpholinyl, imidazolinyl, methylthiazolyl, formylthiazolyl, imidazolyl, tetrazolyl and pyridinyl.
  • Z 2 may represent oxoazetidinyl, (methyl)(oxo)pyrrolidinyl, (hydroxymethyl)(oxo)pyrrolidinyl, dioxoisothiazolidinyl, oxopiperidinyl, (methyl)(oxo)piperazinyl, oxomorpholinyl, oxo-6-azabicyclo[3.2.0]- heptanyl, oxo-2-oxa-6-azaspiro[3.4]octanyl, ethoxytriazolyl or pyrimidinyl.
  • Selected values of Z 2 include oxopyrrolidinyl and (oxo)oxazolidinyl.
  • Z 2 represents oxopyrrolidinyl.
  • Z 2 represents (oxo)oxazolidinyl.
  • Typical values of Z include hydrogen, fluoro, trifluoromethyl, methyl, ethyl, n- propyl, isopropyl, isobutyl, tert- vXy ⁇ , cyclopropyl, cyclopentyl, cyclohexyl, oxo- cyclohexyl, phenyl, bromophenyl, cyanophenyl, nitrophenyl, methoxyphenyl, difluoro- methoxyphenyl, trifluoromethoxyphenyl, methylenedioxyphenyl, methylsulfonylphenyl, dimethylaminophenyl, acetylaminophenyl, methylsulfonylaminophenyl, carboxyphenyl, aminocarbonylphenyl, methylaminocarbonylphenyl, dimethylaminocarbonylphenyl, aminocarbonylaminophenyl, tetrahydro
  • oxopyrrolidinylphenyl dioxopyrrolidinylphenyl, (hydroxy)(oxo)pyrrolidinylphenyl, (amino)(oxo)pyrrolidinylphenyl, (oxo)oxazolidinylphenyl, oxoimidazolidinylphenyl, imidazolinylphenyl, methylthiazolylphenyl, formylthiazolylphenyl, imidazolylphenyl, tetrazolylphenyl, phenylpyrrolidinyl, hydroxyphenylpiperazinyl, (methyl)(phenyl)- pyrazolyl, oxoimidazolidinylthiazolyl, hydroxyphenyltriazolyl, morpholinyltetrazolyl, oxopyrrolidinylpyridinyl, (oxo)oxazolidinylpyridin
  • Additional values include difluoromethyl, aminocarbonylaminomethyl, difluorophenyl, chlorophenyl, methylphenyl, dimethylphenyl, dimethoxyphenyl, (methylthio)phenyl, methylsulfmyl- phenyl, (bromo)(methylsulfonyl)phenyl, (methyl)(methylsulfonyl)phenyl, cyanomethyl- aminocarbonylphenyl, trioxodihydrobenzothienyl, pyrrolidinyl, methylpyrrolidinyl, oxodihydroisoindolinyl, oxopiperidinyl, 1,2,3,4-tetrahydroisoquinolinyl, aminosulfonyl- pyrazolyl, cyclopropylureidothiazolyl, [l,2,4]triazolo[l,5-a]pyrimidinyl,
  • hydroxypyridinyl dimethylaminopyridinyl, N-acetyl-N-methylaminopyridinyl, N-methyl- N-(methylsulfonyl)aminopyridinyl, pyridazinyl, oxopyrimidinyl, (amino)(dimethyl)- pyrimidinyl, (oxo)(thioxo)triazinyl, pyridinylpiperazinyl, pyrimidinylpiperazinyl, oxopyrrolidinylthiazolyl, oxoazetidinylpyridinyl, (methyl)(oxo)pyrrolidinylpyridinyl, (hydroxy)(oxo)pyrrolidinylpyridinyl, (hydroxymethyl)(oxo)pyrrolidinylpyridinyl, (amino)(oxo)pyrrolidinylpyridinyl,
  • Z includes hydrogen, methyl, methylsulfonylphenyl, pyridinyl, oxopyrrolidinylphenyl, (hydroxy)(oxo)pyrrolidinylphenyl and (oxo)oxazolidinylphenyl.
  • Z represents hydrogen.
  • Z represents methyl.
  • Z represents methylsulfonylphenyl.
  • Z represents 3-(methylsulfonyl)phenyl.
  • Z represents pyridinyl.
  • Z represents pyridin-4-yl.
  • Z represents oxopyrrolidinylphenyl.
  • Z represents 3-(2-oxopyrrolidin-l-yl)phenyl.
  • Z represents
  • Z represents 3-(3- hydroxy-2-oxopyrrolidin-l-yl)phenyl. In another aspect of that embodiment, Z represents 3-(4-hydroxy-2-oxopyrrolidin-l-yl)phenyl. In a seventh embodiment, Z represents (oxo)oxazolidinylphenyl. In one aspect of that embodiment, Z represents 3-(2-oxo- oxazolidinyl-3-yl)phenyl.
  • R 1 , R 2 and R 3 independently represent hydrogen, halogen, cyano, nitro, hydroxy, trifiuoromethyl, trifluoromethoxy, -OR a , -SR a , -SOR a , -S0 2 R a , -NR b R c ,
  • heterocycloalkenyl C 4 _g heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl,
  • R 1 , R 2 and R 3 independently represent hydrogen, halogen, cyano, nitro, hydroxy, trifluoromethyl, trifluoromethoxy, -OR a , -SR a , -SOR a , -S0 2 R a , -NR b R c , -NR c COR d , -NR c C0 2 R d , -NHCONR b R c , -NR c S0 2 R e , -N(S0 2 R e ) 2 , -NHS0 2 NR b R c , -COR d , -C0 2 R d , -CONR b R c , -CON(OR a )R b or -S0 2 NR b R c ; or Ci_ 6 alkyl, C 2 _ 6 alkenyl, C 2 _6 alkynyl, C 3 _ 7
  • heterocycloalkenyl C 4 _9 heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl,
  • R 1 , R 2 and R 3 independently represent hydrogen, halogen, cyano or -C0 2 R d ; or Ci_6 alkyl, aryl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkenyl, heteroaryl, (C 3 _ 7 )heterocycloalkyl(Ci_ 6 )alkyl-aryl-, heteroaryl(C 3 _ 7 )heterocycloalkyl-,
  • R 2 and R 3 may independently represent (C 3 _ 7 )cycloalkyl-heteroaryl- or
  • R 1 , R 2 and R 3 may independently represent trifluoromethyl, -OR a , -S0 2 R a , -OS0 2 R a or -CONR b R c ; or heteroaryl(Ci_ 6 )alkyl, (C 3 _ 7 )heterocycloalkyl-aryl-, (C 4 _9)bicycloalkyl-heteroaryl- or (C 3 _ 7 )heterocycloalkyl- heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents.
  • R 1 , R 2 and R 3 independently represent hydrogen, halogen, cyano or -C0 2 R d ; or Ci_6 alkyl, aryl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkenyl, heteroaryl, (C3_ 7 )heterocycloalkyl(Ci_ 6 )alkyl-aryl-, heteroaryl(C 3 _ 7 )heterocycloalkyl-,
  • R 1 , R 2 and R 3 may independently represent (C 3 _ 7 )cycloalkyl-heteroaryl- or (C 3 _ 7 )cycloalkyl(Ci_ 6 )alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents.
  • R 1 , R 2 and R 3 may independently represent trifluoromethyl, -OR a , -S0 2 R a , -OS0 2 R a or -CONR b R c ; or heteroaryl(Ci_6)alkyl, (C 3 _ 7 )heterocycloalkyl-aryl-, (C4- 7 )cycloalkenyl- heteroaryl-, (C 4 _9)-bicycloalkyl-heteroaryl-, (C 4 _9)heterobicycloalkyl-heteroaryl- or (C 3 _ 7 )heterocycloalkyl-heteroaryl(Ci_ 6 )alkyl-, any of which groups may be optionally substituted by one or more substituents.
  • R 1 , R 2 or R 3 examples include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_ 6 )- alkyl, nitro, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _6 alkenyl, hydroxy, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_3 alkylenedioxy, Ci_ 6 alkoxy(Ci_ 6 )- alkyl, Ci_ 6 alkylthio, Ci_ 6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, Ci_ 6 alkylamino, di(Ci_6)alkylamino, (Ci_6)alkoxy(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-
  • Additional examples include hydroxy(Ci_ 6 )alkyl, a carboxylic acid isostere or prodrug moiety ⁇ , -(Ci_ 6 )alkyl-Q, and aminocarbonyl(Ci_ 6 )alkyl. Additional examples include difluoromethyl, difluoroethyl, Ci_ 6 alkylsulphinyl, hydroxy(Ci_ 6 )alkylamino,
  • carboxylic acid isostere or prodrug moiety any functional group, structurally distinct from a carboxylic acid moiety, that will be recognised by a biological system as being similar to, and thus capable of mimicking, a carboxylic acid moiety, or will be readily convertible by a biological system in vivo into a carboxylic acid moiety.
  • a synopsis of some common carboxylic acid isosteres is presented by N.A. Meanwell in J. Med. Chem., 2011, 54, 2529-2591 (cf. in particular Figures 25 and 26).
  • suitable carboxylic acid isostere or prodrug moieties represented by ⁇ include the functional groups of formula (i) to (xli):
  • the asterisk (*) represents the site of attachment to the remainder of the molecule; n is zero, 1 or 2; X represents oxygen or sulphur;
  • R f represents hydrogen, Ci_ 6 alkyl or -CH 2 CH(OH)CH 2 OH;
  • R g represents Ci_ 6 alkyl, trifluoromethyl, -CH 2 CH 2 F, -CH 2 CHF 2 , -CH 2 CF 3 or -CF 2 CF 3 ;
  • R h represents hydrogen, cyano or -C0 2 R d , in which R d is as defined above;
  • R J represents hydrogen or halogen.
  • n is zero. In another embodiment, n is 1. In a further embodiment, n is 2.
  • X represents oxygen. In another embodiment, X represents sulphur.
  • R f represents hydrogen. In another embodiment, R f represents Ci_6 alkyl, especially methyl. In a further embodiment, R is -CH 2 CH(OH)CH 2 OH.
  • R g represents Ci_ 6 alkyl, especially methyl.
  • R g represents trifluoromethyl, -CH 2 CH 2 F, -CH 2 CHF 2 , -CH 2 CF 3 or -CF 2 CF 3 .
  • R g represents trifluoromethyl.
  • R g represents -CH 2 CH 2 F.
  • R g represents -CH 2 CHF 2 .
  • R g represents -CH 2 CF 3 .
  • R g represents -CF 2 CF 3 .
  • R h is hydrogen. In another embodiment, R h represents cyano. In a further embodiment, R h represents -C0 2 R d , especially methoxycarbonyl.
  • R J represents hydrogen. In another embodiment, R J represents halogen, especially chloro.
  • ⁇ represents tetrazolyl, especially a C-linked tetrazolyl moiety of formula (xxiv) or (xxv) as depicted above, in particular a group of formula (xxiv) as depicted above.
  • ⁇ represents Ci_ 6 alkylsulphonylaminocarbonyl, i.e. a moiety of formula (iii) as depicted above wherein R g represents Ci_ 6 alkyl.
  • ⁇ represents Ci_ 6 alkylaminosulphonyl, i.e. a moiety of formula (x) as depicted above wherein R g represents Ci_ 6 alkyl.
  • ⁇ represents (Ci_6)alkylcarbonylaminosulphonyl, i.e. a moiety of formula (v) as depicted above wherein R g represents Ci_ 6 alkyl.
  • Suitable examples of optional substituents which may be present on R 1 , R 2 or R 3 include one, two or three substituents independently selected from halogen, cyano, cyano- (Ci_ 6 )alkyl, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _6 alkenyl, hydroxy, hydroxy(Ci_ 6 )- alkyl, Ci_ 6 alkoxy, trifluoroethoxy, Ci_ 6 alkylsulphonyl, (Ci_ 6 )alkylsulphonyl(Ci_ 6 )alkyl, oxo, amino, di(Ci_6)alkylamino, (Ci_6)alkoxy(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy- (Ci_6)alkyl]amino, C 2 _ 6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl,
  • Additional examples include difluoromethyl, difluoroethyl, Ci_ 6 alkoxy(Ci_ 6 )alkyl, Ci_ 6 alkylsulphinyl, Ci_6 alkylamino, hydroxy(Ci_6)alkylamino, [(Ci_6)alkoxy](hydroxy)(Ci_6)alkylamino,
  • Typical examples of optional substituents which may be present on R 1 , R 2 or R 3 include one, two or three substituents independently selected from halogen, cyano, cyano- (Ci_ 6 )alkyl, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _ 6 alkenyl, hydroxy, Ci_ 6 alkoxy, trifluoroethoxy, Ci_ 6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(Ci_ 6 )- alkylamino, (Ci_ 6 )alkoxy(Ci_ 6 )alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy(Ci_ 6 )alkyl]amino, C 2 _6 alkylcarbonyl, carboxy, carboxy(Ci_ 6 )alkyl, C 2 _ 6 alkoxy
  • alkoxycarbonyl(Ci_ 6 )alkyl and aminocarbonyl alkoxycarbonyl(Ci_ 6 )alkyl and aminocarbonyl.
  • R 1 , R 2 or R 3 examples include fluoro, chloro, bromo, cyano, cyanoethyl, nitro, methyl, ethyl, tert-butyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, methylenedioxy, ethylenedioxy, methoxymethyl, methylthio, methylsulphonyl, methyl- sulphonylethyl, oxo, amino, methylamino, dimethylamino, methoxy ethylamino, N- (hydroxyethyl)-N-(methyl)amino, acetylamino, methoxycarbonylamino, ethoxycarbonyl- amino, ethylaminocarbonylamino, butylaminocarbony
  • Additional examples include hydroxyethyl, hydroxyisopropyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoro- methyl, difluoroethyl, hydroxymethyl, methoxyethyl, methylsulphinyl, ethylamino, hydroxyethylamino, hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)- (methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethyl- amino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)- amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)- (hydroxy)propylamino, morpholinylethylamino, o
  • Suitable examples of particular substituents on R 1 , R 2 or R 3 include fluoro, chloro, cyano, cyanoethyl, methyl, ethyl, trifluoromethyl, trifiuoroethyl, ethenyl, hydroxy, hydroxyethyl, hydroxyisopropyl, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxyethylamino, N-(hydroxy- ethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl, aminocarbonyl and aminocarbonylmethyl.
  • Additional examples include isopropyl, isobutyl, difluoromethyl, difluoroethyl, hydroxymethyl, methoxymethyl, methoxyethyl, methylsulphinyl, ethylamino, hydroxyethylamino, hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)(methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethyl- aminoethylamino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N- (hydroxyethyl)amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)(hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyloxadiazolylamm
  • Typical examples of particular substituents on R 1 , R 2 or R 3 include fluoro, chloro, cyano, cyanoethyl, methyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonyl- methyl, ethoxycarbonylethyl and aminocarbonyl.
  • R 1 is attached at the 6-position of the benzimidazole nucleus in the compounds of formula (I) above.
  • R 1 represents hydrogen, halogen, cyano or -C0 2 R d ; or Ci_ 6 alkyl, aryl, C 3 -7 heterocycloalkyl, C 3 -7 heterocycloalkenyl, heteroaryl, (C 3 _7)heterocycloalkyl- (Ci_ 6 )alkyl-aryl-, heteroaryl(C 3 _7)heterocycloalkyl-, (C 4 -7)cycloalkenyl-heteroaryl-, (C 3 _7)heterocycloalkyl-heteroaryl-, (C 3 -7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-,
  • R 1 may represent (C 3 _7)cycloalkyl- heteroaryl- or (C 3 _7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R 1 may represent trifluoromethyl, -OR a , -S0 2 R a , -OS0 2 R a or -CONR b R c ; or heteroaryl(Ci_ 6 )alkyl,
  • R 1 represents halogen, cyano or -C0 2 R d ; or Ci_ 6 alkyl, aryl, C3-7 heterocycloalkyl, C 3 _ 7 heterocycloalkenyl, heteroaryl, (C 3 _ 7 )heterocycloalkyl(Ci_ 6 )alkyl- aryl-, heteroaryl(C 3 _7)heterocycloalkyl-, (C 4 _7)cycloalkenyl -heteroaryl-,
  • R 1 may represent (C 3 _7)cycloalkyl- heteroaryl- or (C 3 _7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents.
  • R 1 may represent trifluoromethyl, -OR a , -S0 2 R a , -OS0 2 R a or -CONR b R c ; or heteroaryl(Ci_ 6 )alkyl, (C3_7)heterocycloalkyl-aryl-, (C 4 _9)bicycloalkyl-heteroaryl- or (C 3 _7)heterocycloalkyl- heteroaryl(Ci_ 6 )alkyl-, any of which groups may be optionally substituted by one or more substituents.
  • R 1 represents halogen or cyano; or Ci_ 6 alkyl, aryl, C 3 -7
  • heterocycloalkyl C 3 _7 heterocycloalkenyl, heteroaryl, (C 3 _7)heterocycloalkyl(Ci_6)alkyl- aryl-, heteroaryl(C 3 _7)heterocycloalkyl-, (C 4 _7)cycloalkenyl -heteroaryl-,
  • R 1 may represent (C 3 _7)cycloalkyl- heteroaryl- or (C 3 _7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R 1 may represent trifluoromethyl, -OR a , -S0 2 R a , -OS0 2 R a or -CONR b R c ; or heteroaryl(Ci_ 6 )alkyl,
  • R 1 represents halogen or cyano; or Ci_ 6 alkyl, aryl, C 3 _ 7 heterocycloalkyl, C 3 _7 heterocycloalkenyl, heteroaryl, (C 3 _7)heterocycloalkyl(Ci_6)alkyl- aryl-, heteroaryl(C 3 _7)heterocycloalkyl-, (C 3 _7)heterocycloalkyl-heteroaryl-,
  • R 1 may represent (C 3 _7)cycloalkyl -heteroaryl- or (C 3 _7)cycloalkyl(Ci_6)alkyl- heteroaryl-, either of which groups may be optionally substituted by one or more substituents.
  • R 1 may represent trifluoromethyl, -OR a , -S0 2 R a , -OS0 2 R a or -CONR b R c ; or heteroaryl(Ci_ 6 )alkyl, (C 3 _7)heterocycloalkyl-aryl-, (C 4 _ 7 )cycloalkenyl- heteroaryl-, (C 4 _9)-bicycloalkyl-heteroaryl-, (C 4 _9)heterobicycloalkyl-heteroaryl- or (C 3 -7)heterocycloalkyl-heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents.
  • R 1 represents hydrogen. In a second embodiment, R 1 represents halogen. In one aspect of that
  • R 1 represents bromo. In another aspect of that embodiment, R 1 represents chloro.
  • R 1 represents cyano
  • R 1 represents -C0 2 R d .
  • R 1 represents optionally substituted Ci_ 6 alkyl. In one aspect of that embodiment, R 1 represents optionally substituted methyl. In another aspect of that embodiment, R 1 represents optionally substituted ethyl.
  • R 1 represents optionally substituted aryl. In one aspect of that embodiment, R 1 represents optionally substituted phenyl.
  • R 1 represents optionally substituted C3-7
  • R 1 represents optionally substituted C 3 _ 7
  • R 1 represents optionally substituted heteroaryl.
  • R 1 represents benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl or pyrazinyl, any of which groups may be optionally substituted by one or more substituents.
  • R 1 represents optionally substituted thiazolyl.
  • R 1 represents optionally substituted (C 3-7 )- heterocycloalkyl(Ci_6)alkyl-aryl-.
  • R 1 represents optionally substituted pyrrolidinylmethylphenyl-.
  • R 1 represents optionally substituted piperazinylmethylphenyl-.
  • R 1 represents optionally substituted morpholinylmethylphenyl-.
  • R 1 represents optionally substituted heteroaryl(C 3 _ 7 )- heterocycloalkyl-. In one aspect of that embodiment, R 1 represents optionally substituted pyridinylpiperazinyl- .
  • R 1 represents optionally substituted (C 3 _ 7 )cycloalkyl- heteroaryl-.
  • R 1 represents optionally substituted cyclopropylpyrimidinyl-.
  • R 1 represents optionally substituted cyclobutylpyrimidinyl-.
  • R 1 represents optionally substituted cyclopentylpyrimidinyl-.
  • R 1 represents optionally substituted cyclohexylpyrimidinyl-.
  • R 1 represents optionally substituted (C3_ 7 )cycloalkyl- (Ci_6)alkyl-heteroaryl-. In one aspect of that embodiment, R 1 represents optionally substituted cyclopropylmethylpyrimidinyl- .
  • R 1 represents optionally substituted (C 4-7 )- cycloalkenyl-heteroaryl-.
  • R 1 represents optionally substituted (C4_9)bicycloalkyl- heteroaryl-. In one aspect of that embodiment, R 1 represents optionally substituted bicyclo[3.1.0]hexanylpyrimidinyl-.
  • R 1 represents optionally substituted (C 3-7 )- heterocycloalkyl-heteroaryl-.
  • R 1 represents optionally substituted azetidinylpyridinyl-.
  • R 1 represents optionally substituted pyrrolidinylpyridinyl-.
  • R 1 represents optionally substituted isothiazolidinylpyridinyl-.
  • R 1 represents optionally substituted imidazolidinylpyridinyl-.
  • R 1 represents optionally substituted piperidinyl- pyridinyl-.
  • R 1 represents optionally substituted piperazinylpyridinyl-. In a seventh aspect of that embodiment, R 1 represents optionally substituted morpholinylpyridinyl-. In an eighth aspect of that embodiment, R 1 represents optionally substituted thiomorpholinylpyridinyl-. In a ninth aspect of that embodiment, R 1 represents optionally substituted diazepanylpyridinyl-. In a tenth aspect of that embodiment, R 1 represents optionally substituted oxetanylpyrimidinyl-. In an eleventh aspect of that embodiment, R 1 represents optionally substituted azetidinylpyrimidinyl-. In a twelfth aspect of that embodiment, R 1 represents optionally substituted
  • R 1 represents optionally substituted pyrrolidinylpyrimidinyl-. In a fourteenth aspect of that
  • R 1 represents optionally substituted isothiazolidinylpyrimidinyl-. In a fifteenth aspect of that embodiment, R 1 represents optionally substituted
  • R 1 represents optionally substituted piperidinylpyrimidinyl-. In a seventeenth aspect of that embodiment, R 1 represents optionally substituted piperazinylpyrimidinyl-. In an eighteenth aspect of that embodiment, R 1 represents optionally substituted morpholinyl- pyrimidinyl-. In a nineteenth aspect of that embodiment, R 1 represents optionally substituted thiomorpholinylpyrimidinyl- . In a seventeenth embodiment, R 1 represents optionally substituted (C 3-7 )- heterocycloalkyl(Ci_6)alkyl-heteroaryl-.
  • R 1 represents optionally substituted morpholinylmethylthienyl-. In a second aspect of that embodiment, R 1 represents optionally substituted morpholinylethylpyrazolyl-. In a third aspect of that embodiment, R 1 represents optionally substituted azetidinylmethyl- pyridinyl-. In a fourth aspect of that embodiment, R 1 represents optionally substituted piperazinylmethylpyridinyl-. In a fifth aspect of that embodiment, R 1 represents optionally substituted morpholinylmethylpyridinyl-. In a sixth aspect of that embodiment, R 1 represents optionally substituted thiomorpholinylmethylpyridinyl-. In a seventh aspect of that embodiment, R 1 represents optionally substituted morpholinylmethylpyrimidinyl-.
  • R 1 represents optionally substituted (C 3-7 )- heterocycloalkenyl-heteroaryl-.
  • R 1 represents optionally substituted (C 4- c>)- heterobicycloalkyl-heteroaryl- .
  • R 1 represents optionally substituted (C 4- c>)- spiroheterocycloalkyl-heteroaryl-.
  • R 1 represents -OR a .
  • R 1 represents -S0 2 R a .
  • R 1 represents -OS0 2 R a .
  • R 1 represents -CONR b R c .
  • R 1 represents trifluoromethyl.
  • R 1 represents optionally substituted heteroaryl- (Ci_6)alkyl. In a first aspect of that embodiment, R 1 represents optionally substituted imidazolylmethyl. In a second aspect of that embodiment, R 1 represents optionally substituted triazolylmethyl. In a third aspect of that embodiment, R 1 represents optionally substituted pyridinylmethyl.
  • R 1 represents optionally substituted (C 3-7 )- heterocycloalkyl-aryl-. In one aspect of that embodiment, R 1 represents optionally substituted piperazinylphenyl.
  • R 1 represents optionally substituted (C 3-7 )- heterocycloalkyl-heteroaryl(Ci_6)alkyl-. In one aspect of that embodiment, R 1 represents optionally substituted morpholinylpyridinylmethyl.
  • R 1 represents hydrogen, bromo, cyano or -C0 2 R d ; or ethyl, phenyl, piperidinyl, piperazinyl, morpholinyl, 1,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl, pyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinyl- piperazinyl, cyclobutylpyrimidinyl, cyclopropylmethylpyrimidinyl, pyrrolidinylpyridinyl, piperidinylpyridinyl, piperazinylpyridinyl, morpholinylpyr
  • thiomorpholinylpyrimidinyl morpholinylmethylthienyl, morpholinylethylpyrazolyl, 2- oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6-azaspiro[3.4]octanylpyrimidinyl, 2-oxa- 6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7-azaspiro[3.5]nonanylpyrimidinyl, any of which groups may be optionally substituted by one or more substituents.
  • R 1 may represent chloro, trifluoromethyl, -OR a , -S0 2 R a , -OS0 2 R a or -CONR b R c ; or methyl, dihydrothieno[3,4-£][l,4]dioxinyl, dihydropyrrolo[3,4-£]pyridinyl, imidazolylmethyl, triazolylmethyl, pyridinylmethyl, piperazinylphenyl, morpholinylmethylphenyl, cyclopropylpyrimidinyl, cyclopentylpyrimidinyl, cyclohexylpyrimidinyl, cyclohexenyl- pyrimidinyl, bicyclo[3.1.0]hexanylpyrimidinyl, azetidinylpyridinyl, isothiazolidinyl- pyridinyl, imidazolidinylpyridinyl, oxe
  • R 1 represents hydrogen, bromo, cyano or -C0 2 R d ; or ethyl, phenyl, piperidinyl, piperazinyl, morpholinyl, 1,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl, pyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinyl- piperazinyl, pyrrolidinylpyridinyl, piperidinylpyridinyl, piperazinylpyridinyl,
  • Suitable examples of optional substituents on R 1 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_ 6 )alkyl, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _ 6 alkenyl, hydroxy, hydroxy(Ci_ 6 )alkyl, Ci_ 6 alkoxy, trifluoroethoxy, Ci_ 6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(C i _ 6 )alkylamino, (C i _ 6 )alkoxy(C i _ 6 )alkylamino, N-[(C i _ 6 )alkyl] -N- [hydro xy(C i _ 6 )alkyl] - amino, C 2 _ 6 alkylcarbonyl, carboxy, carboxy(C
  • Additional examples include difluoromethyl, difluoroethyl, Ci_ 6 alkoxy(Ci_6)alkyl, Ci_ 6 alkylsulphinyl, Ci_6 alkylamino, hydroxy(Ci_6)alkylamino, [(Ci_6)alkoxy](hydroxy)(Ci_6)alkylamino,
  • Typical examples of optional substituents on R 1 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_ 6 )alkyl, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _ 6 alkenyl, hydroxy, Ci_ 6 alkoxy, trifluoroethoxy, Ci_ 6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(Ci_6)alkylamino,
  • Suitable examples of particular substituents on R 1 include one, two or three substituents independently selected from fluoro, chloro, cyano, cyanoethyl, methyl, ethyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, hydroxyethyl, hydroxyisopropyl, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl,
  • ethoxycarbonylmethyl ethoxycarbonylethyl, aminocarbonyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoromethyl, difluoroethyl, hydroxymethyl, methoxymethyl, methoxyethyl, methylsulphinyl, ethylamino,
  • hydroxy ethylamino hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)- (methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethyl- amino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)- amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)- (hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyl- oxadiazolylamino, methylthiadiazolylamino, thiazolylmethylamino, thiazolylethylamino, pyrimidinylmethylamino, methylpyrazolylmethylammo, ace
  • substituents on R 1 include one, two or three substituents independently selected from fluoro, chloro, cyano, cyanoethyl, methyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl and aminocarbonyl.
  • R 1 include hydrogen, bromo, cyano, -C0 2 R d , ethoxycarbonylethyl, chlorophenyl, hydroxyphenyl, acetylphenyl, aminocarbonylphenyl, oxopiperidinyl, methylsulphonylpiperazinyl, morpholinyl, tert-butoxycarbonyl-1 ,2,3,6-tetrahydro- pyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, methylpyrazolyl, dimethylpyrazolyl, methylindazolyl, dimethylisoxazolyl, methylimidazolyl, pyridinyl, fluoropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)(methyl)pyridinyl, dimethylpyridinyl, trifluoro- methylpyridinyl, e
  • Additional values include chloro, trifluoromethyl, -OR a , -S0 2 R a , -OS0 2 R a , -CONR b R c , N-isopropylcarbonyl-N-methylaminomethyl, N- cyclopropylcarbonyl-N-methylaminomethyl, methylsulphinylphenyl, methylsulphonyl- phenyl, (methyl)(methylsulphonyl)phenyl, ethenylcarbonylaminophenyl, tert-butoxy- carbonylaminophenyl, phenylcarbonylphenyl, aminosulphonylphenyl, isopropylcarbonyl- piperidinyl, cyclobutylcarbonylpiperidinyl, methoxycarbonylpiperidinyl, methylthienyl, dihydrothieno[3,4-3 ⁇ 4][l,4]dioxinyl,
  • R 1 include hydrogen, bromo, cyano, -C0 2 R d , ethoxycarbonyl- ethyl, chlorophenyl, hydroxyphenyl, acetylphenyl, aminocarbonylphenyl, oxopiperidinyl, methylsulphonylpiperazinyl, morpholinyl, tert-butoxycarbonyl-1 ,2,3,6-tetrahydro- pyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, methylpyrazolyl, dimethylpyrazolyl, methylindazolyl, dimethylisoxazolyl, methylimidazolyl, pyridinyl, fluoropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)(methyl)pyridinyl, dimethylpyridinyl, trifluoro- methylpyridiny
  • oxothiomorpholinylpyridinyl dioxothiomorpholinylpyridinyl, oxodiazepanylpyridmyl, hydroxypyrrolidinylpyrimidinyl, piperazinylpyrimidinyl, methylsulphonylpiperazinyl- pyrimidinyl, oxopiperazinylpyrimidinyl, tert-butoxycarbonylpiperazinylpyrimidinyl, morpholinylpyrimidinyl, thiomorpholinylpyrimidinyl, morpholmylmethylthienyl, morpholinylethylpyrazolyl, 2-oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6-aza- spiro[3.4]octanylpyrimidinyl, 2-oxa-6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7- aza
  • R 2 represents hydrogen, halogen or optionally substituted Ci_ 6 alkyl.
  • Typical examples of optional substituents on R 2 include C 2 _ 6 alkoxycarbonyl.
  • Typical examples of particular substituents on R 2 include ethoxycarbonyl.
  • R 2 represents hydrogen. In a second embodiment, R 2 represents halogen. In one aspect of that embodiment, R 2 represents fluoro. In another aspect of that embodiment, R 2 represents chloro. In a third embodiment, R 2 represents optionally substituted Ci_ 6 alkyl. In one aspect of that embodiment, R 2 represents monosubstituted methyl or monosubstituted ethyl.
  • R 2 include hydrogen, fluoro and ethoxycarbonylethyl.
  • R 2 may represent chloro
  • R 3 represents hydrogen
  • R 4 represents hydrogen or methyl.
  • R 4 represents hydrogen. In a second embodiment, R 4 represents Ci_ 6 alkyl, especially methyl.
  • R 5 represents hydrogen, methyl or ethyl.
  • R 5 represents hydrogen.
  • R 5 represents Ci_ 6 alkyl, especially methyl or ethyl.
  • R 5 represents methyl.
  • R 5 represents ethyl.
  • Suitable substituents on R a , R b , R c , R d or R e , or on the heterocyclic moiety -NR b R c include halogen, Ci_ 6 alkyl, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_ 6 alkoxy(Ci_6)alkyl, Ci_ 6 alkylthio, Ci_ 6 alkylsulphinyl, Ci_ 6 alkylsulphonyl, hydroxy, hydroxy(Ci_ 6 )alkyl, amino(Ci_6)alkyl, cyano, trifluoromethyl, oxo, C 2 _6 alkylcarbonyl, carboxy, C 2 _ 6 alkoxycarbonyl, C 2 _ 6 alkylcarbonyloxy, amino, Ci_ 6 alkylamino, di(Ci_6)alkylamino, phenylamino, pyridinylamino, C 2
  • Typical examples of specific substituents on R a , R b , R c , R d or R e , or on the heterocyclic moiety -NR b R c include fluoro, chloro, bromo, methyl, ethyl, isopropyl, methoxy, isopropoxy, difluoromethoxy, trifluoromethoxy, methoxymethyl, methylthio, ethylthio, methylsulphinyl, methylsulphonyl, hydroxy, hydroxymethyl, hydroxyethyl, aminomethyl, cyano, trifluoromethyl, oxo, acetyl, carboxy, methoxycarbonyl,
  • R a represents Ci_ 6 alkyl, aryl, aryl(Ci_6)alkyl, heteroaryl or
  • R a may represent trifluoromethyl; or C3_ 7 heterocycloalkyl or C 3-7 heterocycloalkyl(Ci_6)alkyl, either of which groups may be optionally substituted by one or more substituents.
  • R a represents Ci_ 6 alkyl, aryl(Ci_6)alkyl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents. Additionally, R a may represent trifluoromethyl, aryl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkyl- (Ci_ 6 )alkyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents.
  • R a Selected values of R a include methyl, ethyl, benzyl and isoindolylpropyl, any of which groups may be optionally substituted by one or more substituents. Additional values include trifluoromethyl, propyl, isobutyl, phenyl, oxetanyl, azetidinyl, pyrrolidinyl and pyridinyl, any of which groups may be optionally substituted by one or more substituents
  • R a Selected examples of suitable substituents on R a include Ci_ 6 alkoxy and oxo. Additional examples include halogen, Ci_ 6 alkyl, di(Ci_6)alkylamino, C 2 _6 alkylcarbonyl and C 2 -6 alkoxycarbonyl.
  • R a Selected examples of specific substituents on R a include methoxy and oxo.
  • R a represents optionally substituted Ci_ 6 alkyl.
  • R a ideally represents unsubstituted Ci_ 6 alkyl, especially methyl, ethyl, propyl or isobutyl.
  • R a ideally represents substituted Ci_ 6 alkyl, e.g. methoxyethyl, dimethylaminoethyl or trifluoropropyl.
  • R a represents optionally substituted aryl.
  • R a represents unsubstituted aryl, especially phenyl.
  • R a represents monosubstituted aryl, especially methylphenyl.
  • R a represents optionally substituted aryl(Ci_ 6 )alkyl, ideally unsubstituted aryl(Ci_ 6 )alkyl, especially benzyl.
  • R a represents optionally substituted heteroaryl.
  • R a represents methoxy- pyridinyl, oxopyridinyl and (methyl)(oxo)pyridinyl.
  • R a represents optionally substituted heteroaryl(Ci_6)alkyl, e.g. dioxoisoindolylpropyl.
  • R a represents optionally substituted C 3 _ 7 heterocycloalkyl, e.g.
  • R a represents optionally substituted C 3 _ 7 heterocycloalkyl(Ci_6)alkyl, e.g. acetylpyrrolidinylmethyl or tert- butoxycarbonylpyrrolidinylmethyl.
  • R a represents
  • R a examples include methyl, methoxyethyl, benzyl and dioxoisoindolylpropyl. Additional values include trifluoromethyl, ethyl, dimethylaminoethyl, propyl, trifluoropropyl, isobutyl, methylphenyl, oxetanyl, azetidinyl, acetylazetidinyl,
  • R b represents hydrogen or trifluoromethyl; or Ci_ 6 alkyl, C 3 _ 7 cycloalkyl, C 3 _ 7 cycloalkyl(Ci_ 6 )alkyl, aryl, aryl(Ci_ 6 )alkyl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkyl(Ci_6)alkyl, heteroaryl or heteroaryl(Ci_ 6 )alkyl, any of which groups may be optionally substituted by one or more substituents.
  • R b Selected values of R b include hydrogen; or Ci_ 6 alkyl, aryl(Ci_ 6 )alkyl, C 3 _ 7 heterocycloalkyl or C 3 _ 7 heterocycloalkyl(Ci_ 6 )alkyl, any of which groups may be optionally substituted by one or more substituents. Additional values include C 3 _ 7 cycloalkyl and heteroaryl, either of which groups may be optionally substituted by one or more substituents. Typical values of R b include hydrogen and Ci_ 6 alkyl. Additional values include C 3 _7 cycloalkyl and heteroaryl, either of which groups may be optionally substituted by one or more substituents.
  • R b represents hydrogen or trifluoromethyl; or methyl, ethyl, n-propyl, isopropyl, n-butyl, 2-methylpropyl, tert-butyl, pentyl, hexyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, phenyl, benzyl, phenylethyl, azetidinyl, tetrahydrofuryl,
  • R b may represent indanyl, which group may be optionally substituted by one or more substituents.
  • R b include hydrogen; or methyl, ethyl, n-propyl, benzyl, pyrrolidinyl or morpholinylpropyl, any of which groups may be optionally substituted by one or more substituents. Additionally, R b may represent indanyl or pyridinyl, either of which groups may be optionally substituted by one or more substituents.
  • R b Selected examples of suitable substituents on R b include Ci_ 6 alkoxy, Ci_ 6 alkylthio, Ci_6 alkylsulphinyl, Ci_ 6 alkylsulphonyl, hydroxy, cyano, C 2 _ 6 alkoxycarbonyl, di- (Ci_6)alkylamino and C 2 _ 6 alkoxy carbonylamino.
  • R b Selected examples of specific substituents on R b include methoxy, methylthio, methylsulphinyl, methylsulphonyl, hydroxy, cyano, tert-butoxycarbonyl, dimethylamino and tert-butoxy carbonylamino.
  • R b include hydrogen, methyl, methoxyethyl, methylthioethyl, methylsulphinylethyl, methylsulphonylethyl, hydroxyethyl, cyanoethyl, dimethylamino- ethyl, tert-butoxycarbonylaminoethyl, dihydroxypropyl, benzyl, pyrrolidinyl, tert- butoxycarbonylpyrrolidinyl and morpholinylpropyl. Additionally, R b may represent indanyl or pyridinyl.
  • R b represents hydrogen. In another embodiment, R b represents Ci_ 6 alkyl, especially methyl. Selected values of R c include hydrogen; or Ci_ 6 alkyl, C 3 _ 7 cycloalkyl or C 3 _ 7 heterocycloalkyl, any of which groups may be optionally substituted by one or more substituents.
  • R c represents hydrogen, Ci_ 6 alkyl or C 3 _ 7 cycloalkyl.
  • R c include hydrogen; or methyl, cyclobutyl, cyclopentyl, cyclohexyl, tetrahydropyranyl and piperidinyl, any of which groups may be optionally substituted by one or more substituents.
  • R c Selected examples of suitable substituents on R c include C 2 _ 6 alkylcarbonyl and C 2 _6 alkoxycarbonyl.
  • R c Selected examples of specific substituents on R c include acetyl and tert- butoxycarbony 1.
  • R c include hydrogen, methyl, cyclobutyl, cyclopentyl, cyclohexyl, tetrahydropyranyl, acetylpiperidinyl and tert-butoxycarbonylpiperidinyl,
  • R c represents hydrogen or Ci_ 6 alkyl.
  • R c is hydrogen.
  • R c represents Ci_ 6 alkyl, especially methyl or ethyl, particularly methyl.
  • R c represents C 3 _ 7 cycloalkyl, e.g. cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl.
  • the moiety -NR b R c may suitably represent azetidin-l-yl, pyrrolidin- 1-yl, oxazolidin-3-yl, isoxazolidin-2-yl, thiazolidin-3-yl, isothiazolidin-2-yl, piperidin-1- yl, morpholin-4-yl, thiomorpholin-4-yl, piperazin-l-yl, homopiperidin-l-yl,
  • homomorpholin-4-yl or homopiperazin-l-yl any of which groups may be optionally substituted by one or more substituents.
  • Selected examples of suitable substituents on the heterocyclic moiety -NR b R c include Ci_ 6 alkyl, Ci_ 6 alkylsulphonyl, hydroxy, hydroxy(Ci_ 6 )alkyl, amino(Ci_ 6 )alkyl, cyano, oxo, C 2 _ 6 alkylcarbonyl, carboxy, C 2 _ 6 alkoxycarbonyl, amino, C 2 _ 6 alkylcarbonyl- amino, C 2 _ 6 alkylcarbonylamino(Ci_6)alkyl, C 2 _ 6 alkoxycarbonylamino, Ci_ 6 alkyl- sulphonylamino and aminocarbonyl.
  • Selected examples of specific substituents on the heterocyclic moiety -NR b R c include methyl, methylsulphonyl, hydroxy, hydroxymethyl, aminomethyl, cyano, oxo, acetyl, carboxy, ethoxycarbonyl, amino, acetylamino, acetylaminomethyl, tert-butoxy- carbonylamino, methylsulphonylamino and aminocarbonyl.
  • R c Specific values of the moiety -NR b R c include azetidin-l-yl, hydroxyazetidin-l-yl, hydroxymethylazetidin- 1 -yl, (hydroxy)(hydroxymethyl)azetidin- 1 -yl, aminomethyl- azetidin-l-yl, cyanoazetidin-l-yl, carboxyazetidin-l-yl, aminoazetidin-l-yl,
  • R d represents hydrogen; or Ci_ 6 alkyl, aryl or heteroaryl, any of which groups may be optionally substituted by one or more substituents.
  • R d examples include hydrogen, methyl, ethyl, isopropyl, 2-methylpropyl, tert-butyl, cyclopropyl, cyclobutyl, phenyl, thiazolidinyl, thienyl, imidazolyl and thiazolyl, any of which groups may be optionally substituted by one or more substituents.
  • R d Selected examples of suitable substituents on R d include halogen, Ci_ 6 alkyl, Ci_ 6 alkoxy, oxo, C 2 _ 6 alkylcarbonyloxy and di(Ci_6)alkylamino.
  • R d Selected examples of particular substituents on R d include fluoro, methyl, methoxy, oxo, acetoxy and dimethylamino.
  • R d represents hydrogen. In another embodiment, R d represents optionally substituted Ci_ 6 alkyl. In one aspect of that embodiment, R d ideally represents unsubstituted Ci_ 6 alkyl, e.g. methyl, ethyl, isopropyl, 2-methylpropyl or tert- butyl, especially methyl. In another aspect of that embodiment, R d ideally represents substituted Ci_ 6 alkyl, e.g. substituted methyl or substituted ethyl, including
  • R d represents optionally substituted aryl.
  • R d represents unsubstituted aryl, especially phenyl.
  • R d represents monosubstituted aryl, especially methylphenyl.
  • R d represents disubstituted aryl, e.g. dimethoxyphenyl.
  • R d represents optionally substituted heteroaryl, e.g. thienyl, chlorothienyl, methylthienyl, methylimidazolyl or thiazolyl.
  • R d represents optionally substituted C 3 _ 7 cycloalkyl, e.g. cyclopropyl or cyclobutyl.
  • R d represents optionally substituted C 3 _ 7 heterocycloalkyl, e.g. thiazolidinyl or oxo- thiazolidinyl.
  • R d selected examples include hydrogen, methyl, acetoxy- methyl, dimethylaminomethyl, ethyl, trifluoroethyl, isopropyl, 2-methylpropyl, tert-butyl, cyclopropyl, cyclobutyl, phenyl, dimethoxyphenyl, thiazolidinyl, oxothiazolidinyl, thienyl, chlorothienyl, methylthienyl, methylimidazolyl and thiazolyl.
  • R e represents Ci_ 6 alkyl or aryl, either of which groups may be optionally substituted by one or more substituents.
  • R e Selected examples of suitable substituents on R e include Ci_ 6 alkyl, especially methyl.
  • R e represents optionally substituted Ci_ 6 alkyl, ideally unsubstituted Ci_ 6 alkyl, e.g. methyl or propyl, especially methyl.
  • R e represents optionally substituted aryl.
  • R e represents unsubstituted aryl, especially phenyl.
  • R e represents monosubstituted aryl, especially methylphenyl.
  • R e represents optionally substituted heteroaryl.
  • Selected values of R e include methyl, propyl and methylphenyl.
  • One sub-class of compounds according to the invention is represented by the compounds of formula (IIA) and N-oxides thereof, and pharmaceutically acceptable salts and solvates thereof, and glucuronide derivatives thereof, and co-crystals thereof:
  • R 11 represents halogen or cyano; or Ci_ 6 alkyl, aryl, C 3 _ 7 heterocycloalkyl, C 3 _ 7 heterocycloalkenyl, heteroaryl, heteroaryl(Ci_6)alkyl, (C3_ 7 )heterocycloalkyl-aryl-, (C 3 - 7 )heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl-(C3_ 7 )heterocycloalkyl-, (C 3-7 )- cycloalkyl-heteroaryl-, (C 3 _ 7 )cycloalkyl(Ci_6)alkyl-heteroaryl-, (C4_ 7 )cycloalkenyl- heteroaryl-, (C4_9)bicycloalkyl-heteroaryl-, (C 3 _7)heterocycloalkyl-heteroaryl-, (C 3-7 )- heterocyclo
  • R 12 represents represents hydrogen, halogen, trifluoromethyl or optionally substituted Ci_ 6 alkyl
  • R 15 and R 16 independently represent hydrogen, halogen, cyano, nitro, Ci_ 6 alkyl, trifluoromethyl, hydroxy, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_ 6 alkylthio, Ci_6 alkylsulfinyl, Ci_ 6 alkylsulfonyl, amino, Ci_ 6 alkylamino, di(Ci_ 6 )alkylamino, arylamino, C 2 _ 6 alkylcarbonylamino, Ci_ 6 alkylsulfonylamino, formyl, C 2 _ 6 alkylcarbonyl, C3-6 cycloalkylcarbonyl, C3-6 heterocycloalkylcarbonyl, carboxy, C 2 _ 6 alkoxycarbonyl, aminocarbonyl, Ci_ 6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulfonyl, Ci_ 6 alkylami
  • the present invention also provides a compound of formula (IIA) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a co-crystal thereof, wherein
  • R 11 represents halogen or cyano; or Ci_ 6 alkyl, aryl, C 3 _ 7 heterocycloalkyl, C3_ 7 heterocycloalkenyl, heteroaryl, (C 3 _ 7 )heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl - (C 3 _ 7 )heterocycloalkyl-, (C 3 _ 7 )cycloalkyl-heteroaryl-, (C 3 _ 7 )cycloalkyl(Ci_ 6 )alkyl- heteroaryl-, (C 4 _ 7 )cycloalkenyl -heteroaryl-, (C 3 _ 7 )heterocycloalkyl-heteroaryl-,
  • R 12 represents hydrogen
  • the present invention also provides a compound of formula (IIA) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, wherein
  • R 11 represents halogen or cyano; or Ci_ 6 alkyl, aryl, C3_ 7 heterocycloalkyl, C3_ 7 heterocycloalkenyl, heteroaryl, (C 3 _ 7 )heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl - (C 3 _ 7 )heterocycloalkyl-, (C 4 _ 7 )cycloalkenyl-heteroaryl-, (C 3 _ 7 )heterocycloalkyl -heteroaryl-, (C 3 _ 7 )heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C 3 _ 7 )heterocycloalkenyl -heteroaryl-, (C 4 _9)heterobicycloalkyl-heteroaryl- or (C 4 _9)spiroheterocycloalkyl-heteroaryl-,
  • R 12 represents hydrogen
  • R 1 1 represents halogen or cyano; or Ci_ 6 alkyl, aryl, C 3 _ 7 heterocycloalkyl,
  • R 1 1 may represent (C 3 _ 7 )cycloalkyl-heteroaryl- or (C 3 _ 7 )cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents.
  • R 11 may represent heteroaryl(Ci_6)alkyl, (C 3 _ 7 )heterocycloalkyl-aryl-, (C 4 - 7 )cycloalkenyl- heteroaryl-, (C 4 _9)-bicycloalkyl-heteroaryl- or (C 4 _9)heterobicycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
  • R 1 1 examples include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, nitro, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _ 6 alkenyl, hydroxy, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_3 alkylenedioxy, Ci_ 6 alkoxy(Ci_6)alkyl, Ci_ 6 alkyl- thio, Ci_6 alkylsulphonyl, (Ci_ 6 )alkylsulphonyl(Ci_ 6 )alkyl, oxo, amino, Ci_ 6 alkylamino, di(Ci_ 6 )alkylamino, (Ci_ 6 )alkoxy(Ci_ 6 )alkylamino, N-[(Ci_ 6 )alkyl]-
  • Additional examples include hydroxy(Ci_ 6 )alkyl, a carboxylic acid isostere or prodrug moiety ⁇ as defined herein, -(Ci_ 6 )alkyl-Q, and aminocarbonyl(Ci_6)alkyl.
  • Additional examples include difluoromethyl, difluoroethyl, Ci_ 6 alkylsulphinyl, hydroxy(C ⁇ alkylamino, [(C i _ 6 )alkoxy] (hydroxy)(C i _ 6 )alkylamino, [(C i _ 6 )alkylthio] (hydroxy)(C i _ 6 )alkyl- amino, di(C i _ 6 )alkylamino(C i _ 6 )alkylamino, N-[di(C i _ 6 )alkylamino(C i _ 6 )alkyl] -N- [hydroxy(Ci_6)alkyl]amino, hydroxy(Ci_6)alkyl(C 3 _ 7 )cycloalkylamino, (hydroxy)[(C 3 _ 7 )- cycloalkyl(Ci_6)alkyl]amino, (C 3 - 7
  • R 11 examples include fluoro, chloro, bromo, cyano, cyanoethyl, nitro, methyl, ethyl, tert-butyl, trifluoromethyl, trifiuoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, difluoromethoxy, trifiuoromethoxy, trifluoroethoxy, methylenedioxy, ethylenedioxy, methoxymethyl, methylthio, methylsulphonyl, methyl- sulphonylethyl, oxo, amino, methylamino, dimethylamino, methoxy ethylamino, N- (hydroxyethyl)-N-(methyl)amino, acetylamino, methoxycarbonylamino, ethoxycarbonyl- amino, ethylaminocarbonylamino, butylaminocarbonylamino
  • Additional examples include hydroxyethyl, hydroxyisopropyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoro- methyl, difluoroethyl, hydroxymethyl, methoxyethyl, methylsulphinyl, ethylamino, hydroxyethylamino, hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)- (methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethyl- amino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)- amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)- (hydroxy)propylamino, morpholinylethylamino, o
  • R 11 represents Ci_ 6 alkyl, aryl, C 3 _ 7 heterocycloalkyl, C 3 _ 7
  • R 11 may represent (C 3 _7)cycloalkyl-heteroaryl- or (C 3 _7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents.
  • R 11 may represent heteroaryl(Ci_6)alkyl, (C 3 _7)heterocycloalkyl-aryl- or (C 4 _9)bicycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
  • R 11 represents Ci_ 6 alkyl, aryl, C 3 -7 heterocycloalkyl, C 3 -7
  • R 11 may represent heteroaryl(Ci_ 6 )alkyl, (C 3 _7)heterocycloalkyl-aryl-, (C 4 _ 7 )cycloalkenyl-heteroaryl-, (C 4 _9)bicycloalkyl-heteroaryl- or (C 4 _9)heterobicycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
  • R 11 represents Ci_ 6 alkyl, aryl, C 3 -7 heterocycloalkyl, C 3 -7 heterocycloalkenyl, heteroaryl, (C 3 _7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl - (C 3 _7)heterocycloalkyl-, (C 3 _7)heterocycloalkyl-heteroaryl-, (C 3 _7)heterocycloalkyl- (Ci_ 6 )alkyl -heteroaryl- or (C 4 _ 9 )spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
  • R 11 may represent heteroaryl(Ci_6)alkyl, (C 3 _7)heterocycloalkyl-aryl-, (C 3 _7)cycloalkyl-heteroaryl-, (C 4 _7)cycloalkenyl-heteroaryl-, (C 4 _9)bicycloalkyl-heteroaryl- or (C 4 _9)heterobicycloalkyl- heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
  • R 11 represents halogen. In one aspect of that embodiment,
  • R 11 represents bromo
  • R 11 represents cyano
  • R 11 represents optionally substituted Ci_ 6 alkyl. In one aspect of that embodiment, R 11 represents optionally substituted methyl. In another aspect of that embodiment, R 11 represents optionally substituted ethyl.
  • R 11 represents optionally substituted aryl. In one aspect of that embodiment, R 11 represents optionally substituted phenyl.
  • R 11 represents optionally substituted C 3 _7 heterocycloalkyl. In a sixth embodiment, R 11 represents optionally substituted C 3 _ 7
  • R 11 represents optionally substituted heteroaryl.
  • R 11 represents benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl or pyrazinyl, any of which groups may be optionally substituted by one or more substituents.
  • R 11 represents optionally substituted thiazolyl.
  • R 11 represents optionally substituted (C 3-7 )- heterocycloalkyl(Ci_6)alkyl-aryl-.
  • R 11 represents optionally substituted pyrrolidinylmethylphenyl-.
  • R 11 represents optionally substituted piperazinylmethylphenyl-.
  • R 11 represents optionally substituted morpholinylmethylphenyl-.
  • R 11 represents optionally substituted heteroaryl-(C 3 _ 7 )- heterocycloalkyl-. In one aspect of that embodiment, R 11 represents optionally substituted pyridinylpiperazinyl- .
  • R 11 represents optionally substituted (C 3 _ 7 )cycloalkyl- heteroaryl-.
  • R 11 represents optionally substituted cyclopropylpyrimidinyl-.
  • R 11 represents optionally substituted cyclobutylpyrimidinyl-.
  • R 11 represents optionally substituted cyclopentylpyrimidinyl-.
  • R 11 represents optionally substituted cyclohexylpyrimidinyl-.
  • R 11 represents optionally substituted (C 3 _ 7 )cycloalkyl- (Ci_ 6 )alkyl -heteroaryl-. In one aspect of that embodiment, R 11 represents optionally substituted cyclopropylmethylpyrimidinyl- .
  • R 11 represents optionally substituted (C4_ 7 )cycloalkenyl- heteroaryl-.
  • R 11 represents optionally substituted (C 4- c>)- bicycloalkyl-heteroaryl-. In one aspect of that embodiment, R 11 represents optionally substituted bicyclo[3.1.0]hexanylpyrimidinyl-.
  • R 11 represents optionally substituted (C 3-7 )- heterocycloalkyl-heteroaryl-.
  • R 11 represents optionally substituted azetidinylpyridinyl-.
  • R 11 represents optionally substituted pyrrolidinylpyridinyl-.
  • R 11 represents optionally substituted isothiazolidinylpyridinyl-.
  • R 11 represents optionally substituted imidazolidinylpyridinyl-.
  • R 11 represents optionally substituted piperidinyl- pyridinyl-.
  • R 11 represents optionally substituted piperazinylpyridinyl-. In a seventh aspect of that embodiment, R 11 represents optionally substituted morpholinylpyridinyl-. In an eighth aspect of that embodiment, R 11 represents optionally substituted thiomorpholinylpyridinyl-. In a ninth aspect of that embodiment, R 11 represents optionally substituted diazepanylpyridinyl-. In a tenth aspect of that embodiment, R 11 represents optionally substituted oxetanylpyrimidinyl-. In an eleventh aspect of that embodiment, R 11 represents optionally substituted azetidinylpyrimidinyl-. In a twelfth aspect of that embodiment, R 11 represents optionally substituted
  • R 11 represents optionally substituted pyrrolidinylpyrimidinyl-. In a fourteenth aspect of that
  • R 11 represents optionally substituted isothiazolidinylpyrimidinyl-. In a fifteenth aspect of that embodiment, R 11 represents optionally substituted
  • R 11 represents optionally substituted piperidinylpyrimidinyl-. In a seventeenth aspect of that
  • R 11 represents optionally substituted piperazinylpyrimidinyl-. In an eighteenth aspect of that embodiment, R 11 represents optionally substituted morpholinyl- pyrimidinyl-. In a nineteenth aspect of that embodiment, R 11 represents optionally substituted thiomorpholinylpyrimidinyl- .
  • R 11 represents optionally substituted (C 3-7 )- heterocycloalkyl(Ci_6)alkyl-heteroaryl-.
  • R 11 represents optionally substituted morpholinylmethylthienyl-.
  • R 11 represents optionally substituted morpholinylethylpyrazolyl-.
  • R 11 represents optionally substituted azetidinylmethyl- pyridinyl-.
  • R 11 represents optionally substituted piperazinylmethylpyridinyl-.
  • R 11 represents optionally substituted morpholinylmethylpyridinyl-. In a sixth aspect of that embodiment, R 11 represents optionally substituted thiomorpholinylmethylpyridinyl-. In a seventh aspect of that embodiment, R 11 represents optionally substituted morpholinylmethyl- pyrimidinyl-. In a sixteenth embodiment, R 11 represents optionally substituted (C 3-7 )- heterocycloalkenyl-heteroaryl-.
  • R 11 represents optionally substituted (C4-9)- heterobicycloalkyl-heteroaryl- .
  • R 11 represents optionally substituted (C 4- c>)- spiroheterocycloalkyl-heteroaryl-.
  • R 11 represents optionally substituted (C 3-7 )- heterocycloalkyl-aryl-. In one aspect of that embodiment, R 11 represents optionally substituted piperazinylphenyl.
  • R 11 represents optionally substituted heteroaryl-
  • R 11 represents optionally substituted triazolylmethyl. In a second aspect of that embodiment, R 11 represents optionally substituted pyridinylmethyl.
  • R 11 represents bromo or cyano; or ethyl, phenyl, piperidinyl, piperazinyl, morpholinyl, 1,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl, pyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinyl- piperazinyl, cyclobutylpyrimidinyl, cyclopropylmethylpyrimidinyl, pyrrolidinylpyridinyl, piperidinylpyridinyl, piperazinylpyridinyl, morpholinylpyridinyl, thiomorpholinyl
  • thiomorpholinylpyrimidinyl morpholinylmethylthienyl, morpholinylethylpyrazolyl, 2- oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6-azaspiro[3.4]octanylpyrimidinyl, 2-oxa- 6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7-azaspiro[3.5]nonanylpyrimidinyl, any of which groups may be optionally substituted by one or more substituents.
  • R 11 may represent methyl, dihydrothieno[3,4-£][l,4]dioxinyl, dihydropyrrolo[3,4-3 ⁇ 4]- pyridinyl, triazolylmethyl, pyridinylmethyl, piperazinylphenyl, morpholinylmethylphenyl, cyclopropylpyrimidinyl, cyclopentylpyrimidmyl, cyclohexylpyrimidinyl, cyclohexenyl- pyrimidinyl, bicyclo[3.1.0]hexanylpyrimidinyl, azetidinylpyridinyl, isothiazolidinyl- pyridinyl, imidazolidinylpyridinyl, oxetanylpyrimidinyl, azetidinylpyrimidinyl, tetrahydrofuranylpyrimidinyl, isothiazolidinylpyrimidinyl
  • R 1 1 represents bromo or cyano; or ethyl, phenyl, piperidinyl, piperazinyl, morpholinyl, 1 ,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl,
  • pyrimidinyl pyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinyl- piperazinyl, pyrrolidinylpyridinyl, piperidinylpyridinyl, piperazinylpyridinyl,
  • Suitable examples of optional substituents on R 11 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_ 6 )alkyl, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _ 6 alkenyl, hydroxy, hydroxy(Ci_6)alkyl, Ci_ 6 alkoxy, trifluoroethoxy, Ci_ 6 alkylsulphonyl, (Ci_ 6 )alkylsulphonyl(Ci_ 6 )alkyl, oxo, amino, di(Ci_ 6 )alkylamino, (Ci_6)alkoxy(Ci_ 6 )alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy(Ci_ 6 )alkyl]- amino, C 2 _ 6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C 2 _ 6 alkoxycarbonyl
  • Additional examples include difluoromethyl, difluoroethyl, Ci_ 6 alkoxy(Ci_ 6 )alkyl, Ci_ 6 alkylsulphinyl, Ci_6 alkylamino, hydroxy(Ci_ 6 )alkylamino, [(Ci_6)alkoxy](hydroxy)(Ci_ 6 )alkylamino,
  • Typical examples of optional substituents on R 1 1 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _ 6 alkenyl, hydroxy, Ci_ 6 alkoxy, trifluoroethoxy, Ci_ 6 alkylsulphonyl, (Ci_ 6 )alkylsulphonyl(Ci_ 6 )alkyl, oxo, amino, di(Ci_ 6 )alkylamino,
  • Suitable examples of particular substituents on R 11 include one, two or three substituents independently selected from fluoro, chloro, cyano, cyanoethyl, methyl, ethyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, hydroxyethyl, hydroxyisopropyl, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl,
  • ethoxycarbonylmethyl ethoxycarbonylethyl, aminocarbonyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoromethyl, dif uoroethyl, hydroxymethyl, methoxymethyl, methoxyethyl, methylsulphinyl, ethylamino,
  • hydroxy ethylamino hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)- (methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethyl- amino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)- amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)- (hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyl- oxadiazolylamino, methylthiadiazolylamino, thiazolylmethylamino, thiazolylethylamino, pyrimidinylmethylamino, methylpyrazolylmethylamino, ace
  • substituents on R 11 include one, two or three substituents independently selected from fluoro, chloro, cyano, cyanoethyl, methyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl and aminocarbonyl.
  • R 1 1 includes bromo, cyano, ethoxycarbonylethyl, chlorophenyl, hydroxyphenyl, acetylphenyl, aminocarbonylphenyl, oxopiperidinyl, methylsulphonyl- piperazinyl, morpholinyl, tert-butoxycarbonyl-l ,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, methylpyrazolyl, dimethylpyrazolyl, methylindazolyl, dimethylisoxazolyl, methylimidazolyl, pyridinyl, fluoropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)(methyl)pyridinyl, dimethylpyridinyl, trifluoromethylpyridinyl, ethenylpyridinyl, methoxy
  • Additional values include N-isopropylcarbonyl-N-methylaminomethyl, methylsulphinyl- phenyl, methylsulphonylphenyl, (methyl)(methylsulphonyl)phenyl, ethenylcarbonyl- aminophenyl, tert-butoxycarbonylaminophenyl, phenylcarbonylphenyl, aminosulphonyl- phenyl, isopropylcarbonylpiperidinyl, cyclobutylcarbonylpiperidinyl, methoxycarbonyl- piperidinyl, methylthienyl, dihydrothieno[3,4-£][l,4]dioxinyl, oxodihydropyrrolo[3,4-3 ⁇ 4]- pyridinyl, hydroxyisopropylpyridinyl, methylsulphonylpyridinyl, (difluoromethyl)(oxo)-
  • R 11 selected values include bromo, cyano, ethoxycarbonylethyl, chlorophenyl, hydroxyphenyl, acetylphenyl, aminocarbonylphenyl, oxopiperidinyl, methylsulphonyl- piperazinyl, morpholinyl, tert-butoxycarbonyl-l,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, methylpyrazolyl, dimethylpyrazolyl, methylindazolyl, dimethylisoxazolyl, methylimidazolyl, pyridinyl, fluoropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)(methyl)pyridinyl, dimethylpyridinyl, trifluoromethylpyridinyl, ethenylpyridinyl, methoxypyr
  • Typical examples of optional substituents on R 12 include C 2 _ 6 alkoxycarbonyl. Typical examples of particular substituents on R 12 include ethoxycarbonyl.
  • R 12 represents hydrogen. In a second embodiment, R 12 represents halogen. In one aspect of that embodiment, R 12 represents fluoro. In another aspect of that embodiment, R 12 represents chloro. In a third embodiment, R 12 represents trifluoromethyl. In a fourth embodiment, R 12 represents optionally substituted Ci_ 6 alkyl. In one aspect of that embodiment, R 12 represents unsubstituted methyl. In another aspect of that embodiment, R 12 represents unsubstituted ethyl. In a further aspect of that embodiment, R 12 represents monosubstituted methyl or monosubstituted ethyl.
  • Typical values of R 12 include hydrogen, fluoro, chloro, trifluoromethyl, methyl and ethoxycarbonylethyl.
  • Suitable values of R 12 include hydrogen, fluoro, chloro, trifluoromethyl and methyl.
  • R 15 and R 16 may independently represent hydrogen, fluoro, chloro, bromo, cyano, nitro, methyl, isopropyl, trifluoromethyl, hydroxy, methoxy, difluoro- methoxy, trifluoromethoxy, methylthio, methylsulfmyl, methylsulfonyl, amino, methyl- amino, tert-butylamino, dimethylamino, phenylamino, acetylamino, methylsulfonylamino, formyl, acetyl, cyclopropylcarbonyl, azetidinylcarbonyl, pyrrolidinylcarbonyl, piperidinyl- carbonyl, piperazinylcarbonyl, morpholinylcarbonyl, carboxy, methoxycarbonyl, amino- carbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminosulfonyl, methyl
  • Typical values of R 15 include hydrogen, halogen, Ci_ 6 alkyl, trifluoromethyl, Ci_ 6 alkoxy, difluoromethoxy and trifluoromethoxy.
  • R 15 represents hydrogen. In a second embodiment, R 15 represents halogen. In a first aspect of that embodiment, R 15 represents fluoro. In a second aspect of that embodiment, R 15 represents chloro. In a third embodiment, R 15 represents Ci_ 6 alkyl. In one aspect of that embodiment, R 15 represents methyl. In a fourth embodiment, R 15 represents trifluoromethyl. In a fifth embodiment, R 15 represents Ci_6 alkoxy. In one aspect of that embodiment, R 15 represents methoxy. In a sixth embodiment, R 15 represents difluoromethoxy. In a seventh embodiment, R 15 represents trifluoromethoxy.
  • Selected values of R 15 include hydrogen, fluoro, chloro, methyl, trifluoromethyl, methoxy, difluoromethoxy and trifluoromethoxy.
  • Typical values of R 16 include hydrogen, halogen, Ci_ 6 alkyl, trifluoromethyl, difluoromethoxy and amino.
  • R 16 represents hydrogen. In a second embodiment, R 16 represents halogen. In a first aspect of that embodiment, R 16 represents fluoro. In a second aspect of that embodiment, R 16 represents chloro. In a third embodiment, R 16 represents Ci_ 6 alkyl. In one aspect of that embodiment, R 16 represents methyl. In a fourth embodiment, R 16 represents trifluoromethyl. In a fifth embodiment, R 16 represents difluoromethoxy. In a seventh embodiment, R 16 represents amino.
  • Selected values of R 16 include hydrogen, fluoro, chloro, methyl, trifluoromethyl, difluoromethoxy and amino.
  • R 16 is attached at the /?ara-position of the phenyl ring relative to the integer R 15 .
  • a particular sub-group of the compounds of formula (IIA) above is represented by the compounds of formula (IIB) and N-oxides thereof, and pharmaceutically acceptable salts and solvates thereof, and glucuronide derivatives thereof, and co-crystals thereof:
  • V represents C-R 22 or N
  • R 21 represents hydrogen, halogen, cyano, Ci_ 6 alkyl, trifluoromethyl, C 2 _ 6 alkenyl,
  • Ci_ 6 alkynyl hydroxy, hydroxy(Ci_ 6 )alkyl, Ci_ 6 alkoxy, difluoromethoxy, trifluoro- methoxy, trifluoroethoxy, Ci_ 6 alkoxy(Ci_ 6 )alkyl, Ci_ 6 alkylthio, Ci_ 6 alkylsulphonyl, amino, Ci_ 6 alkylamino, di(Ci_ 6 )alkylamino, hydroxy(Ci_ 6 )alkylamino, (Ci_ 6 )alkoxy(Ci_ 6 )- alkylamino, [(C i _ 6 )alkoxy] (hydroxy)(C i _ 6 )alkylamino, N-[(C i _ 6 )alkyl] -N- [hydroxy(C i_ 6 )- alkyljamino, [(Ci_6)alkylthio](hydroxy)(Ci_6)alkylamino
  • R 22 represents hydrogen, halogen or Ci_ 6 alkyl
  • R 23 represents hydrogen or Ci_ 6 alkyl
  • E, Q, Z, R 12 , R 15 and R 16 are as defined above.
  • the present invention also provides a compound of formula (IIB) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a co-crystal thereof, wherein
  • R 21 represents hydrogen, halogen, cyano, Ci_ 6 alkyl, trifluoromethyl, C 2 _ 6 alkenyl, C 2 _6 alkynyl, hydroxy, hydroxy(Ci_ 6 )alkyl, Ci_ 6 alkoxy, difluoromethoxy, trifluoro- methoxy, trifluoroethoxy, Ci_ 6 alkylthio, Ci_ 6 alkylsulphonyl, amino, Ci_ 6 alkylamino, di(C i _ 6 )alkylamino, (C i _6)alkoxy(C i _ 6 )alkylamino, N-[(C i _ 6 )alkyl] -N- [hydro xy(C i _6)alkyl] - amino, C 2 _ 6 alkylcarbonylamino, C 2 _ 6 alkoxycarbonylamino, Ci_ 6 alkylsulphonylamino, formyl,
  • R 12 represents hydrogen
  • the present invention also provides a compound of formula (IIB) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, wherein
  • V represents CH or N
  • R 21 represents hydrogen, halogen, cyano, Ci_ 6 alkyl, trifluoromethyl, C 2 _ 6 alkenyl, C 2 _6 alkynyl, hydroxy, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_6 alkylthio, Ci_ 6 alkylsulphonyl, amino, Ci_ 6 alkylamino, di(Ci_ 6 )alkylamino,
  • R 12 and R 23 each represents hydrogen
  • V represents C-R 22 .
  • V represents N.
  • R 21 represents hydrogen, halogen, cyano, Ci_ 6 alkyl, trifluoromethyl, C 2 -6 alkenyl, hydroxy, hydroxy(Ci_ 6 )alkyl, Ci_ 6 alkoxy, trifluoroethoxy, amino,
  • R 21 represents (C 3 _7)cycloalkyl, (C3_ 7 )cycloalkyl(Ci_ 6 )alkyl, (C 3 _ 7 )heterocycloalkyl or (C 4 _9)spiroheterocycloalkyl, any of which groups may be optionally substituted by one or more substituents.
  • R 21 may represent Ci_ 6 alkoxy(Ci_6)alkyl, Ci_ 6 alkylsulphonyl, Ci_ 6 alkylamino, hydroxy(Ci_ 6 )- alkylamino, [(Ci_6)alkoxy](hydroxy)(Ci_6)alkylamino, [(Ci_6)alkylthio](hydroxy)(Ci_6)- alkylamino, di(C i _ 6 )alkylamino(C i _ 6 )alkylamino, N-[di(C i _ 6 )alkylamino(C i _ 6 )alkyl] -N- [hydroxy(Ci_ 6 )alkyl]amino, hydroxy(Ci_ 6 )alkyl(C3_ 7 )cycloalkylamino, (hydroxy) [(C 3 _ 7 )- cycloalkyl(Ci_6)alkyl]amino, (C 3 _
  • R 21 represents hydrogen, halogen, cyano, Ci_ 6 alkyl, trifluoromethyl,
  • R 21 represents (C 3 _ 7 )heterocycloalkyl or (C 4 _ 9 )spiroheterocycloalkyl, either of which groups may be optionally substituted by one or more substituents.
  • R 21 represents an optionally substituted (C 3 _ 7 )cycloalkyl group
  • typical values include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl, any of which groups may be optionally substituted by one or more substituents.
  • R 21 represents an optionally substituted (C 3 _ 7 )cycloalkyl(Ci_ 6 )alkyl group
  • typical values include cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl and cyclohexylmethyl, any of which groups may be optionally substituted by one or more substituents.
  • R 21 represents an optionally substituted (C 4 _ 7 )cycloalkenyl group
  • typical values include cyclobutenyl, cyclopentenyl, cyclohexenyl and cycloheptenyl, any of which groups may be optionally substituted by one or more substituents.
  • R 21 represents an optionally substituted (C 4 _9)bicycloalkyl group
  • a typical value is bicyclo[3.1.0]hexanyl, which group may be optionally substituted by one or more substituents.
  • R 21 represents an optionally substituted (C3_ 7 )heterocycloalkyl group
  • typical values include oxetanyl, azetidinyl, tetrahydrofuranyl, pyrrolidinyl,
  • isothiazolidinyl imidazolidinyl, tetrahydropyranyl, piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl and diazepanyl, any of which groups may be optionally substituted by one or more substituents.
  • R 21 represents an optionally substituted (C 3 - 7 )heterocycloalkyl(Ci_6)alkyl group
  • typical values include azetidinylmethyl, piperazinylmethyl, morpholinylmethyl and thiomorpholinylmethyl, any of which groups may be optionally substituted by one or more substituents.
  • R 21 represents an optionally substituted (C 3 _ 7 )heterocycloalkenyl group
  • a typical value is optionally substituted 1,2,3,6-tetrahydropyridinyl.
  • R 21 represents an optionally substituted (C 4 _9)heterobicycloalkyl group
  • typical values include quinuclidinyl, 5-aza-2-oxabicyclo[2.2.1]heptanyl, 3-azabicyclo- [3.1.0]hexanyl, 3-azabicyclo[4.1.0]heptanyl, 5-aza-2-oxabicyclo[2.2.2]octanyl, 3- azabicyclo[3.2.1]octanyl, 8-azabicyclo[3.2.1]octanyl, 3,8-diazabicyclo[3.2.1]octanyl and 3,9-diazabicyclo[4.2.1]nonanyl, any of which groups may be optionally substituted by one or more substituents.
  • R 21 represents an optionally substituted (C 4 _ 9 )spiroheterocycloalkyl group
  • typical values include 5-azaspiro[2.4]heptanyl, 2-oxa-6-azaspiro[3.3]heptanyl, 2-oxa-6- azaspiro[3.4]octanyl, 2-oxa-6-azaspiro[3.5]nonanyl, 2-oxa-7-azaspiro[3.5]nonanyl and 7- oxa-2-azaspiro[3.5]nonanyl, any of which groups may be optionally substituted by one or more substituents.
  • R 21 examples include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, Ci_ 6 alkyl, trifluoromethyl, trifluoroethyl, C 2 _ 6 alkenyl, hydroxy, Ci_ 6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_ 6 alkylthio, Ci_ 6 alkylsulphonyl, (Ci_ 6 )alkyl- sulphonyl(Ci_ 6 )alkyl, oxo, amino, Ci_ 6 alkylamino, di(Ci_ 6 )alkylamino, C 2 _ 6 alkylcarbonyl- amino, C 2 _ 6 alkoxycarbonylamino, Ci_ 6 alkylsulphonylamino, formyl, C 2 _ 6 alkylcarbonyl, carboxy, carboxy(Ci_6)
  • Additional examples include difluoroethyl, hydroxy(Ci_ 6 )alkyl and Ci_ 6 alkoxy(Ci_ 6 )alkyl.
  • Suitable examples of optional substituents on R 21 include one, two or three substituents independently selected from fluoro, chloro, bromo, cyano, cyanomethyl, methyl, ethyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, ethoxy, difluoro- methoxy, trifluoromethoxy, trifluoro ethoxy, methylthio, methylsulphonyl, methyl- sulphonylmethyl, oxo, amino, methylamino, dimethylamino, acetylamino, methoxy- carbonylamino, ethoxy carbonylamino, tert-butoxycarbonylamino, methylsulphonylamino, formyl, acetyl, carboxy, carboxymethyl, carboxyethyl, methoxycarbonyl, ethoxycarbonyl, tert-butoxycarbonyl, me
  • R 21 Selected examples of optional substituents on R 21 include one, two or three substituents independently selected from cyano(Ci_ 6 )alkyl, trifluoroethyl, hydroxy, Ci_ 6 alkylsulphonyl, (Ci_ 6 )alkylsulphonyl(Ci_ 6 )alkyl, oxo, C 2 _ 6 alkylcarbonyl, carboxy-
  • R 21 examples include cyanoethyl, trifluoroethyl, hydroxy, methylsulphonyl, methylsulphonylethyl, oxo, acetyl, carboxymethyl, carboxyethyl, tert-butoxycarbonyl, ethoxycarbonylmethyl and ethoxy carbonylethyl. Additional examples include fluoro, methyl, difluoroethyl, hydroxymethyl, hydroxyethyl, methoxy, methoxymethyl, amino, dimethylamino, carboxy, methoxycarbonyl and aminocarbonyl.
  • R 21 represents hydrogen, fluoro, cyano, methyl, ethyl, trifluoromethyl, ethenyl, hydroxy, hydroxyethyl, hydroxyisopropyl, methoxy, isopropoxy, trifluoroethoxy, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, carboxy, aminocarbonylmethyl, cyclobutyl, cyclopropylmethyl, pyrrolidinyl, hydroxypyrrolidinyl, tetrahydropyranyl, piperidinyl, acetylpiperidinyl, methylsulphonylpiperidinyl, piperazinyl, cyanoethylpiperazinyl, trifluoroethylpiperazinyl, methylsulphonylpiperazinyl,
  • oxothiomorpholinyl dioxothiomorpholinyl, oxodiazepanyl, 2-oxa-6-azaspiro[3.3]- heptanyl, 2-oxa-6-azaspiro[3.4]octanyl, 2-oxa-6-azaspiro[3.5]nonanyl or 2-oxa-7- azaspiro[3.5]nonanyl.
  • R 21 may represent isopropyl, isobutyl, methoxy- methyl, methoxyethyl, methylsulphonyl, ethylamino, hydroxyethylamino, hydroxypropyl- amino, (hydroxy)(methyl)propylamino, (hydroxy)(methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethylamino, (dimethylamino)(methyl)- propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)amino, hydroxymethyl- cyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)(hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyloxadiazolylammo, methyl- thiadiazolyla
  • R 21 represents hydrogen, fluoro, cyano, methyl, trifluoromethyl, ethenyl, hydroxy, methoxy, isopropoxy, trifluoroethoxy, amino, dimethylamino, methoxyethyl- amino, N-(hydroxyethyl)-N-(methyl)amino, carboxy, pyrrolidinyl, hydroxypyrrolidinyl, piperidinyl, acetylpiperidinyl, piperazinyl, cyanoethylpiperazinyl, trifluoroethyl- piperazinyl, methylsulphonylpiperazinyl, methylsulphonylethylpiperazinyl, oxo- piperazinyl, acetylpiperazinyl, tert-butoxycarbonylpiperazinyl, carboxymethylpiperazinyl, carboxyethylpiperazinyl, ethoxycarbonylmethyl
  • R 21 represents hydroxy(Ci_6)alkyl. In one aspect of that embodiment, R 21 represents hydroxyisopropyl, especially 2-hydroxyprop-2-yl.
  • R 22 represents hydrogen or Ci_ 6 alkyl.
  • R 22 represents hydrogen, chloro or methyl.
  • R 22 represents hydrogen or methyl.
  • R 22 represents hydrogen. In another embodiment, R 22 represents Ci_ 6 alkyl, especially methyl. In a further embodiment, R 22 represents halogen, especially chloro.
  • R 23 represents hydrogen or methyl.
  • R 23 represents hydrogen. In another embodiment, R 23 represents Ci_ 6 alkyl, especially methyl.
  • T represents -CH 2 - or -CH 2 CH 2 -;
  • W represents O, S, S(O), S(0) 2 , N(R 31 ) or C(R 32 )(R 33 );
  • R 31 represents hydrogen, hydroxy(Ci_ 6 )alkyl, cyano(Ci_ 6 )alkyl, Ci_ 6 alkyl, trifluoro- methyl, difluoroethyl, trifluoro ethyl, Ci_ 6 alkylsulphonyl, (Ci_ 6 )alkylsulphonyl(Ci_ 6 )alkyl, formyl, C 2 _ 6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C 2 _ 6 alkoxycarbonyl, C 2 _ 6 alkoxycarbonyl(Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety ⁇ , -(Ci_ 6 )alkyl-Q, aminocarbonyl, Ci_ 6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl or di(Ci_ 6 )alkylaminosulphon
  • R 32 represents halogen, Ci_ 6 alkoxy, carboxy, carboxy(Ci_6)alkyl, C 2 _ 6
  • alkoxycarbonyl C 2 _ 6 alkoxycarbonyl(Ci_6)alkyl, aminocarbonyl, a carboxylic acid isostere or prodrug moiety ⁇ , or -(Ci_ 6 )alkyl-Q;
  • R 33 represents hydrogen, halogen, Ci_ 6 alkyl or amino
  • V, E, Q, Z, R 12 , R 15 , R 16 , R 23 and ⁇ are as defined above.
  • T represents -CH 2 -. In a second embodiment, T represents -CH 2 CH 2 -.
  • W represents O, S, S(O), S(0) 2 , N(R 31 ) or CF 2 ;
  • W represents O, S, S(O), S(0) 2 or N(R 31 ).
  • W represents O.
  • W represents S.
  • W represents S(O).
  • W represents S(0) 2 .
  • W represents N(R 31 ).
  • W represents C(R 32 )(R 33 ).
  • W represents CF 2 .
  • R 31 represents hydrogen, cyano(Ci_ 6 )alkyl, Ci_ 6 alkyl, trifluoromethyl, trifluoro ethyl, Ci_ 6 alkylsulphonyl, (Ci_ 6 )alkylsulphonyl(Ci_ 6 )alkyl, formyl, C 2 _ 6 alkyl- carbonyl, carboxy, carboxy(Ci_ 6 )alkyl, C 2 _ 6 alkoxycarbonyl, C 2 _ 6 alkoxycarbonyl- (Ci_ 6 )alkyl, a carboxylic acid isostere or prodrug moiety ⁇ , -(Ci_6)alkyl-Q, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl or di(Ci_ 6 )alkyl- aminosulphonyl .
  • R 31 represents hydrogen, cyano(Ci_ 6 )alkyl, trifluoroethyl, Ci_ 6
  • R 31 may represent hydroxy(Ci_ 6 )alkyl or difluoroethyl.
  • R 31 includes hydrogen, cyanoethyl, methyl, ethyl, isopropyl, trifluoromethyl, trifluoroethyl, methylsulphonyl, methylsulphonylethyl, formyl, acetyl, carboxy, carboxymethyl, carboxyethyl, methoxycarbonyl, ethoxycarbonyl, tert-butoxy- carbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl, aminocarbonyl, methylamino- carbonyl, dimethylaminocarbonyl, aminosulphonyl, methylaminosulphonyl and dimethylaminosulphonyl. Additional values include hydroxyethyl and difluoroethyl.
  • Selected values of R 31 include hydrogen, cyanoethyl, trifluoroethyl, methylsulphonyl, methylsulphonylethyl, acetyl, carboxymethyl, carboxyethyl, tert-butoxy- carbonyl, ethoxycarbonylmethyl and ethoxycarbonylethyl. Additional values include hydroxyethyl and difluoroethyl.
  • R 32 represents halogen, carboxy, carboxy(Ci_ 6 )alkyl, C 2 _ 6
  • alkoxycarbonyl C 2 _ 6 alkoxycarbonyl(Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety ⁇ , or -(Ci_6)alkyl-Q.
  • R 32 represents carboxy, C 2 _ 6 alkoxycarbonyl or tetrazolyl. Additionally, R 32 may represent Ci_ 6 alkoxy or aminocarbonyl.
  • Typical values of R 32 include fluoro, carboxy, carboxymethyl, carboxyethyl, methoxycarbonyl, ethoxycarbonyl, methoxycarbonylmethyl, methoxycarbonylethyl, ethoxycarbonylmethyl, ethoxycarbonylethyl, tetrazolyl, tetrazolylmethyl and
  • Additional values include methoxy and aminocarbonyl.
  • Particular values of R include carboxy, methoxycarbonyl, ethoxycarbonyl and tetrazolyl. Additional values include methoxy and aminocarbonyl.
  • R 32 represents carboxy
  • R 33 represents hydrogen, halogen or Ci_ 6 alkyl.
  • R 33 represents hydrogen or Ci_ 6 alkyl.
  • R 33 represents hydrogen. In a second embodiment, R 33 represents halogen. In one aspect of that embodiment, R 33 represents fluoro. In a third embodiment, R 33 represents Ci_ 6 alkyl. In one aspect of that embodiment, R 33 represents methyl. In a fourth embodiment, R 33 represents amino.
  • Another sub-group of the compounds of formula (IIB) above is represented by the compounds of formula (IIF) and N-oxides thereof, and pharmaceutically acceptable salts and solvates thereof, and glucuronide derivatives thereof, and co-crystals thereof:
  • R 34 represents hydrogen, halogen, hydroxy, Ci_ 6 alkoxy, Ci_ 6 alkylthio, Ci_ 6 alkylsulphinyl, Ci_ 6 alkylsulphonyl, amino, Ci_ 6 alkylamino or di(Ci_6)alkylamino; and E, Q, Z, V, W, R 12 , R 15 , R 16 and R 23 are as defined above.
  • R 34 represents hydrogen. In a second embodiment, R 34 represents halogen. In one aspect of that embodiment, R 34 represents fluoro. In a third embodiment, R 34 represents hydroxy. In a fourth embodiment, R 34 represents Ci_ 6 alkoxy, especially methoxy. In a fifth embodiment, R 34 represents Ci_ 6 alkylthio, especially methylthio. In a sixth embodiment, R 34 represents Ci_ 6 alkylsulphinyl, especially methylsulphinyl. In a seventh embodiment, R 34 represents Ci_ 6 alkylsulphonyl, especially methylsulphonyl. In an eighth embodiment, R 34 represents amino. In a ninth embodiment, R 34 represents Ci_ 6 alkylamino, especially methylamino.
  • R 34 represents di(Ci_6)alkylamino, especially dimethylamino.
  • Selected values of R include hydrogen, fluoro, hydroxy, methoxy, methylthio, methylsulphinyl, methylsulphonyl, amino, methylamino and dimethylamino.
  • R 34 represents hydrogen or hydroxy.
  • -M- represents -CH 2 - or -CH 2 CH 2 -;
  • E, Q, Z, V, W, R 12 , R 15 , R 16 , R 23 and R 34 are as defined above.
  • -M- represents -CH 2 -. In another embodiment, -M- represents -CH 2 CH 2 -.
  • novel compounds in accordance with the present invention include each of the compounds whose preparation is described in accompanying Examples 2, 3A, 3B, 5- 531, 532-540, and 541-1105, and pharmaceutically acceptable salts and solvates thereof, and co-crystals thereof.
  • the compounds in accordance with the present invention are beneficial in the treatment and/or prevention of various human ailments. These include autoimmune and inflammatory disorders; neurological and neurodegenerative disorders; pain and nociceptive disorders; cardiovascular disorders; metabolic disorders; ocular disorders; and oncological disorders.
  • Inflammatory and autoimmune disorders include systemic autoimmune disorders, autoimmune endocrine disorders and organ-specific autoimmune disorders.
  • Systemic autoimmune disorders include systemic lupus erythematosus (SLE), psoriasis, psoriatic arthropathy, vasculitis, polymyositis, scleroderma, multiple sclerosis, systemic sclerosis, ankylosing spondylitis, rheumatoid arthritis, non-specific inflammatory arthritis, juvenile inflammatory arthritis, juvenile idiopathic arthritis (including oligoarticular and polyarticular forms thereof), anaemia of chronic disease (ACD), Still's disease (juvenile and/or adult onset), Beliefs disease and Sjogren's syndrome.
  • SLE systemic lupus erythematosus
  • psoriasis psoriatic arthropathy
  • vasculitis polymyositis
  • scleroderma multiple sclerosis
  • Autoimmune endocrine disorders include thyroiditis.
  • Organ-specific autoimmune disorders include Addison's disease, haemolytic or pernicious anaemia, acute kidney injury (AKI; including cisplatin- induced AKI), diabetic nephropathy (DN), obstructive uropathy (including cisplatin- induced obstructive uropathy), glomerulonephritis (including Goodpasture's syndrome, immune complex -mediated glomerulonephritis and antineutrophil cytoplasmic antibodies (ANCA)-associated glomerulonephritis), lupus nephritis (LN), minimal change disease, Graves' disease, idiopathic thrombocytopenic purpura, inflammatory bowel disease (including Crohn's disease, ulcerative colitis, indeterminate colitis and pouchitis), pemphigus, atopic dermatitis, autoimmune hepatitis, primary biliary cirrhosis
  • osteoporosis osteopenia, osteopenia, erosive bone disease, chondritis, cartilage degeneration and/or destruction, fibrosing disorders (including various forms of hepatic and pulmonary fibrosis), asthma, rhinitis, chronic obstructive pulmonary disease (COPD), respiratory distress syndrome, sepsis, fever, muscular dystrophy (including Duchenne muscular dystrophy) and organ transplant rejection (including kidney allograft rejection).
  • COPD chronic obstructive pulmonary disease
  • Neurological and neurodegenerative disorders include Alzheimer's disease, Parkinson's disease, Huntington's disease, ischaemia, stroke, amyotrophic lateral sclerosis, spinal cord injury, head trauma, seizures and epilepsy.
  • Cardiovascular disorders include thrombosis, cardiac hypertrophy, hypertension, irregular contractility of the heart (e.g. during heart failure), and sexual disorders
  • Modulators of TNFa function may also be of use in the treatment and/or prevention of myocardial infarction (see J.J. Wu et al., JAMA, 2013, 309, 2043-2044).
  • Metabolic disorders include diabetes (including insulin-dependent diabetes mellitus and juvenile diabetes), dyslipidemia and metabolic syndrome.
  • Ocular disorders include retinopathy (including diabetic retinopathy, proliferative retinopathy, non-proliferative retinopathy and retinopathy of prematurity), macular oedema (including diabetic macular oedema), age-related macular degeneration (ARMD), vascularisation (including corneal vascularisation and neovascularisation), retinal vein occlusion, and various forms of uveitis and keratitis.
  • retinopathy including diabetic retinopathy, proliferative retinopathy, non-proliferative retinopathy and retinopathy of prematurity
  • macular oedema including diabetic macular oedema
  • vascularisation including corneal vascularisation and neovascularisation
  • retinal vein occlusion and various forms of uveitis and keratitis.
  • Oncological disorders which may be acute or chronic, include proliferative disorders, especially cancer, and cancer-associated complications (including skeletal complications, cachexia and anaemia).
  • proliferative disorders especially cancer
  • cancer-associated complications including skeletal complications, cachexia and anaemia.
  • cancer-associated complications including skeletal complications, cachexia and anaemia.
  • haemato logical malignancy including leukaemia and lymphoma
  • non-haemato logical malignancy including solid tumour cancer, sarcoma, meningioma, glioblastoma multiforme, neuroblastoma, melanoma, gastric carcinoma and renal cell carcinoma.
  • Chronic leukaemia may be myeloid or lymphoid. Varieties of leukaemia include lymphoblastic T cell leukaemia, chronic myelogenous leukaemia (CML), chronic lymphocytic/lymphoid leukaemia (CLL), hairy-cell leukaemia, acute lymphoblastic leukaemia (ALL), acute myelogenous leukaemia (AML), myelodysplasia syndrome, chronic neutrophilic leukaemia, acute lymphoblastic T cell leukaemia, plasmacytoma, immunoblastic large cell leukaemia, mantle cell leukaemia, multiple myeloma, acute megakaryoblastic leukaemia, acute megakaryocytic leukaemia, promyelocytic leukaemia and erythroleukaemia.
  • CML chronic myelogenous leukaemia
  • CLL chronic lymphocytic/lymphoid leukaemia
  • ALL acute lymphoblastic
  • lymphoma Varieties of lymphoma include malignant lymphoma, Hodgkin's lymphoma, non-Hodgkin's lymphoma, lymphoblastic T cell lymphoma, Burkitt's lymphoma, follicular lymphoma, MALT1 lymphoma and marginal zone lymphoma.
  • Non-haemato logical malignancy include cancer of the prostate, lung, breast, rectum, colon, lymph node, bladder, kidney, pancreas, liver, ovary, uterus, cervix, brain, skin, bone, stomach and muscle.
  • Modulators of TNFa function may also be used to increase the safety of the potent anticancer effect of TNF (see F.V. Hauwermeiren et al., J. Clin. Invest., 2013, 123, 2590-2603).
  • the present invention also provides a pharmaceutical composition which comprises a compound in accordance with the invention as described above, or a pharmaceutically acceptable salt or solvate thereof, in association with one or more pharmaceutically acceptable carriers.
  • compositions according to the invention may take a form suitable for oral, buccal, parenteral, nasal, topical, ophthalmic or rectal administration, or a form suitable for administration by inhalation or insufflation.
  • compositions may take the form of, for example, tablets, lozenges or capsules prepared by conventional means with
  • binding agents e.g. pregelatinised maize starch, polyvinylpyrrolidone or hydroxypropyl methyl cellulose
  • fillers e.g. lactose, microcrystalline cellulose or calcium hydrogenphosphate
  • lubricants e.g. magnesium stearate, talc or silica
  • disintegrants e.g. potato starch or sodium glycollate
  • wetting agents e.g. sodium lauryl sulphate.
  • the tablets may be coated by methods well known in the art.
  • Liquid preparations for oral administration may take the form of, for example, solutions, syrups or suspensions, or they may be presented as a dry product for constitution with water or other suitable vehicle before use.
  • Such liquid preparations may be prepared by conventional means with pharmaceutically acceptable additives such as suspending agents, emulsifying agents, non-aqueous vehicles or preservatives.
  • the preparations may also contain buffer salts, flavouring agents, colouring agents or sweetening agents, as appropriate.
  • Preparations for oral administration may be suitably formulated to give controlled release of the active compound.
  • compositions may take the form of tablets or lozenges formulated in conventional manner.
  • the compounds of formula (I) may be formulated for parenteral administration by injection, e.g. by bolus injection or infusion.
  • Formulations for injection may be presented in unit dosage form, e.g. in glass ampoules or multi-dose containers, e.g. glass vials.
  • the compositions for injection may take such forms as suspensions, solutions or emulsions in oily or aqueous vehicles, and may contain formulatory agents such as suspending, stabilising, preserving and/or dispersing agents.
  • the active ingredient may be in powder form for constitution with a suitable vehicle, e.g. sterile pyrogen-free water, before use.
  • the compounds of formula (I) may also be formulated as a depot preparation. Such long-acting formulations may be administered by implantation or by intramuscular injection.
  • the compounds according to the present invention may be conveniently delivered in the form of an aerosol spray presentation for pressurised packs or a nebuliser, with the use of a suitable propellant, e.g. dichlorodifluoromethane, fluorotrichloromethane, dichlorotetrafluoroethane, carbon dioxide or other suitable gas or mixture of gases.
  • a suitable propellant e.g. dichlorodifluoromethane, fluorotrichloromethane, dichlorotetrafluoroethane, carbon dioxide or other suitable gas or mixture of gases.
  • compositions may, if desired, be presented in a pack or dispenser device which may contain one or more unit dosage forms containing the active ingredient.
  • the pack or dispensing device may be accompanied by instructions for administration.
  • the compounds of use in the present invention may be conveniently formulated in a suitable ointment containing the active component suspended or dissolved in one or more pharmaceutically acceptable carriers.
  • Particular carriers include, for example, mineral oil, liquid petroleum, propylene glycol, polyoxyethylene, polyoxypropylene, emulsifying wax and water.
  • the compounds of use in the present invention may be formulated in a suitable lotion containing the active component suspended or dissolved in one or more pharmaceutically acceptable carriers.
  • Particular carriers include, for example, mineral oil, sorbitan monostearate, polysorbate 60, cetyl esters wax, cetearyl alcohol, benzyl alcohol, 2-octyldodecanol and water.
  • the compounds of use in the present invention may be conveniently formulated as micronized suspensions in isotonic, pH-adjusted sterile saline, either with or without a preservative such as a bactericidal or fungicidal agent, for example phenylmercuric nitrate, benzylalkonium chloride or chlorhexidine acetate.
  • a bactericidal or fungicidal agent for example phenylmercuric nitrate, benzylalkonium chloride or chlorhexidine acetate.
  • ophthalmic administration compounds may be formulated in an ointment such as petrolatum.
  • the compounds of use in the present invention may be conveniently formulated as suppositories. These can be prepared by mixing the active component with a suitable non-irritating excipient which is solid at room temperature but liquid at rectal temperature and so will melt in the rectum to release the active component.
  • suitable non-irritating excipient include, for example, cocoa butter, beeswax and polyethylene glycols.
  • daily dosages may range from around 10 ng/kg to 1000 mg/kg, typically from 100 ng/kg to 100 mg/kg, e.g. around 0.01 mg/kg to 40 mg/kg body weight, for oral or buccal administration, from around 10 ng/kg to 50 mg/kg body weight for parenteral administration, and from around 0.05 mg to around 1000 mg, e.g. from around 0.5 mg to around 1000 mg, for nasal administration or administration by inhalation or insufflation.
  • a compound in accordance with the present invention may be coadministered with another pharmaceutically active agent, e.g. an anti-inflammatory molecule such as methotrexate or prednisolone.
  • another pharmaceutically active agent e.g. an anti-inflammatory molecule such as methotrexate or prednisolone.
  • the compounds of formula (I) above may be prepared by a process which comprises reacting a compound of formula Z-Q-C0 2 H or a carboxylate salt thereof (e.g. a carboxylate salt with an alkali metal such as lithium, sodium or potassium) with a compound of formula (III):
  • the reaction may advantageously be performed in the presence of a peptide coupling reagent such as 0-(7-azabenzotriazol-l-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate (HATU), optionally in the presence of a suitable base, e.g. an organic base such as N,N-diisopropylethylamine.
  • a suitable base e.g. an organic base such as N,N-diisopropylethylamine.
  • the reaction is conveniently effected at ambient or elevated temperature in a suitable solvent, e.g. N,N-dimethylformamide or a chlorinated solvent such as dichloromethane.
  • the product thereby obtained is suitably treated with an acid, ideally an organic acid such as acetic acid, or a mineral acid such as hydrochloric acid, typically at an elevated temperature.
  • the reaction may conveniently be effected in the presence of a coupling reagent such as l-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC), typically at ambient temperature in a suitable solvent, e.g. a chlorinated solvent such as dichloromethane, in the presence of a suitable base, e.g. an organic base such as triethylamine.
  • a coupling reagent such as l-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC)
  • EDC l-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
  • a suitable solvent e.g. a chlorinated solvent such as dichloromethane
  • a suitable base e.g. an organic base such as triethylamine.
  • reaction may conveniently be effected at an elevated temperature in the presence of a mineral acid, e.g. hydrochloric acid.
  • a mineral acid e.g. hydrochloric acid.
  • reaction may conveniently be effected at an elevated temperature in the presence of a lower alkanol, e.g. a Ci_ 4 alkanol such as methanol.
  • a lower alkanol e.g. a Ci_ 4 alkanol such as methanol.
  • the compounds of formula (I) above wherein E represents a covalent bond or an optionally substituted straight or branched Ci_ 4 alkylene chain may be prepared by a process which comprises reacting a compound of formula L'-E'-Y with a compound of formula (IV):
  • the leaving group L 1 is typically a halogen atom, e.g. chloro or bromo.
  • reaction is conveniently effected at ambient or elevated temperature in a suitable solvent, e.g. N,N-dimethylformamide or a chlorinated solvent such as
  • the reaction may be performed in the presence of a suitable base, e.g. an inorganic base such as potassium carbonate, cesium carbonate or sodium hydride.
  • a suitable base e.g. an inorganic base such as potassium carbonate, cesium carbonate or sodium hydride.
  • the intermediates of formula (IV) above may be prepared by reacting a compound of formula Z-Q-C0 2 H or a carboxylate salt thereof (e.g. a carboxylate salt with an alkali metal such as lithium, sodium or potassium) with a compound of formula (V):
  • a carboxylate salt thereof e.g. a carboxylate salt with an alkali metal such as lithium, sodium or potassium
  • the transformation is conveniently effected by catalytic hydrogenation of compound (VI), which typically comprises treating compound (VI) with gaseous hydrogen in the presence of a hydrogenation catalyst such as palladium on carbon.
  • a hydrogenation catalyst such as palladium on carbon.
  • the reduction of compound (VI) may be effected by treatment with elemental iron or zinc, typically at an elevated temperature in the presence of ammonium chloride.
  • the reduction of compound (VI) may be effected by treatment with tin(II) chloride, typically at an elevated temperature in the presence of a mineral acid such as hydrochloric acid.
  • the intermediates of formula (VI) wherein E represents a covalent bond or an optionally substituted straight or branched Ci_ 4 alkylene chain may be prepared by reacting a compound of formula Y-E 1 -NH 2 with a compound of formula (VIII):
  • reaction is conveniently effected at ambient or elevated temperature in a suitable solvent, e.g. l-methyl-2-pyrrolidinone (NMP), a cyclic ether such as
  • reaction may be performed in the presence of a suitable base, e.g. an inorganic base such as potassium carbonate.
  • a suitable base e.g. an inorganic base such as potassium carbonate.
  • the compounds of formula (I) above, wherein Q corresponds to a group of formula -CH(OH)-Q 1 - may be prepared by a process which comprises reacting an aldehyde of formula OHC-Q'-Z with a compound of formula (IX):
  • the reaction is conveniently effected in the presence of a strong base, e.g. n- butyllithium or lithium diisopropylamide (LDA).
  • a strong base e.g. n- butyllithium or lithium diisopropylamide (LDA).
  • LDA lithium diisopropylamide
  • the reaction is carried out in a suitable solvent, e.g. a cyclic ether such as tetrahydrofuran.
  • the intermediates of formula (IX) above may be prepared by reacting a compound of formula (III) as defined above with formic acid, ideally at ambient temperature.
  • Y, R 1 , R 2 and R 3 are as defined above, and L 2 represents a suitable leaving group; in the presence of a transition metal catalyst.
  • the leaving group L 2 is typically a halogen atom, e.g. bromo.
  • a suitable transition metal catalyst for use in the above reaction is
  • reaction is conveniently performed in the presence of 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl.
  • the reaction is suitably carried out at an elevated temperature in a suitable solvent, e.g. N,N- dimethylformamide, typically in the presence of a base, e.g. an inorganic base such as cesium carbonate.
  • the reaction is conveniently performed in the presence of copper sulfate pentahydrate and sodium ascorbate.
  • the reaction is carried out at ambient temperature in a suitable solvent, e.g. a cyclic ether solvent such as tetrahydrofuran, typically in admixture with water.
  • the leaving group L 3 is typically a halogen atom, e.g. chloro.
  • reaction between compound (XIII) and sodium azide is conveniently effected at ambient temperature in a suitable solvent, e.g. N,N-dimethylformamide.
  • a suitable solvent e.g. N,N-dimethylformamide.
  • the compounds of formula (I) above wherein Q represents -S- may be prepared by a process which comprises reacting a compound of formula Z-S-Z with a compound of formula (IX) as defined above.
  • the reaction is conveniently effected at ambient temperature in a suitable solvent, e.g. N,N-dimethylformamide.
  • a suitable solvent e.g. N,N-dimethylformamide.
  • the reaction may be performed in the presence of a suitable base, e.g. an inorganic base such as potassium carbonate.
  • the compounds of formula (I) above may be prepared by a process which comprises cyclising a compound of formula (XIV):
  • the cyclication reaction is conveniently effected by heating compound (XIV) in acetic acid.
  • the intermediates of formula (XIV) above may be prepared by a process which comprises reacting an aldehyde derivative of formula Y-E 2 -CHO with a compound of formula (XV):
  • the reducing agent for use in the above reaction is suitably sodium triacetoxy- borohydride or sodium borohydride.
  • the compounds of formula (I) above wherein -Q-Z represents dimethylamino may be prepared by a process which comprises reacting a compound of formula (III) as defined above with (dichloromethylene)dimethylammonium chloride.
  • reaction is conveniently effected in a suitable solvent, e.g. a chlorinated solvent such as dichloromethane, typically in the presence of a base, e.g. an organic base such as N,N-diisopropylethylamine.
  • a suitable solvent e.g. a chlorinated solvent such as dichloromethane
  • a base e.g. an organic base such as N,N-diisopropylethylamine.
  • any compound of formula (I) initially obtained from any of the above processes may, where appropriate, subsequently be elaborated into a further compound of formula (I) by techniques known from the art.
  • a compound of formula (I) which contains a hydroxy group may be alkylated by treatment with the appropriate alkyl halide in the presence of a base, e.g. sodium hydride or cesium carbonate, or silver oxide.
  • a compound of formula (I) wherein -Q-Z represents -CH 2 OH may be arylated in a two-step procedure which comprises: (i) treatment with thionyl chloride; and (ii) treatment of the chloro derivative thereby obtained with the appropriate aryl or heteroaryl hydroxide.
  • a compound of formula (I) wherein -Q-Z represents -CH 2 OH may be converted into the corresponding compound of formula (I) wherein Q represents -CH 2 S- via a two-step procedure which comprises: (i) treatment with thionyl chloride; and (ii) treatment of the chloro derivative thereby obtained with a compound of formula Z-SH, typically in the presence of a base, e.g. an inorganic base such as potassium carbonate.
  • a compound of formula (I) which contains hydroxy may be converted into the corresponding fluoro-substituted compound by treatment with diethylaminosulfur trifluoride (DAST).
  • a compound of formula (I) which contains hydroxy may be converted into the corresponding difluoro-substituted compound via a two-step procedure which comprises: (i) treatment with an oxidising agent, e.g. manganese dioxide; and (ii) treatment of the carbonyl-containing compound thereby obtained with DAST.
  • a compound of formula (I) wherein -Q-Z represents -CH 2 OH may be converted into the corresponding compound wherein -Q-Z represents -CH(OH)Z in a two-step procedure which comprises: (i) oxidation with a suitable oxidising agent, e.g.
  • a compound of formula (I) wherein -Q-Z represents -CH 2 OH may be converted into the corresponding compound wherein -Q-Z represents -CH(OH)CF 3 in a two-step procedure which comprises: (i) oxidation with a suitable oxidising agent, e.g. Dess-Martin periodinane or manganese(IV) oxide; and (ii) treatment of the aldehyde derivative thereby obtained with (trifluoromethyl)trimethylsilane and cesium fluoride.
  • a suitable oxidising agent e.g. Dess-Martin periodinane or manganese(IV) oxide
  • a compound of formula (I) which contains an N-H moiety may be alkylated by treatment with the appropriate alkyl halide, typically at an elevated temperature in an organic solvent such as acetonitrile, optionally in the presence of a base, e.g. an inorganic base such as sodium hydride.
  • a compound of formula (I) which contains an N-H moiety may be alkylated by treatment with the appropriate alkyl tosylate, optionally in the presence of a base, e.g. an inorganic base such as sodium hydride, or an organic base such as l ,8-diazabicyclo[5.4.0]undec-7-ene (DBU).
  • a compound of formula (I) which contains an N-H moiety may be converted into the corresponding compound wherein the nitrogen atom is substituted by Ci_ 6 alkyl- sulphonyl, e.g. methylsulphonyl, by treatment with the appropriate Ci_ 6 alkylsulphonyl halide, e.g. a Ci_ 6 alkylsulphonyl chloride such as methanesulphonyl chloride, typically at ambient temperature in the presence of a base, e.g. an organic base such as triethylamine.
  • Ci_ 6 alkyl- sulphonyl e.g. methylsulphonyl
  • Ci_ 6 alkylsulphonyl halide e.g. a Ci_ 6 alkylsulphonyl chloride such as methanesulphonyl chloride
  • a compound of formula (I) which contains an -OH moiety may be converted into the corresponding compound containing an -OS0 2 R a moiety by treatment with the appropriate sulphonyl halide, e.g. a sulphonyl chloride of formula R a S0 2 Cl, typically in the presence of a base, e.g. an organic base such as triethylamine.
  • a base e.g. an organic base such as triethylamine.
  • a compound of formula (I) containing the moiety -S- may be converted into the corresponding compound containing the moiety -S(O)- by treatment with 3-chloroperoxy- benzoic acid.
  • a compound of formula (I) containing the moiety -S(O)- may be converted into the corresponding compound containing the moiety -S(0) 2 - by treatment with 3-chloroperoxybenzoic acid.
  • a compound of formula (I) containing an aromatic nitrogen atom may be converted into the corresponding N-oxide derivative by treatment with 3-chloroperoxy- benzoic acid.
  • a bromophenyl derivative of formula (I) may be converted into the corresponding optionally substituted 2-oxopyrrolidin- 1 -ylphenyl or 2-oxooxazolidin-3-ylphenyl derivative by treatment with pyrrolidin-2-one or oxazolidin-2-one, or an appropriately substituted analogue thereof.
  • the reaction is conveniently effected at an elevated temperature in the presence of copper(I) iodide, trans -N,N'-dimethylcyclohexane- 1,2- diamine and an inorganic base such as potassium carbonate.
  • a compound of formula (I) wherein R 1 represents halogen, e.g. bromo, may be converted into the corresponding compound wherein R 1 represents an optionally substituted aryl or heteroaryl moiety by treatment with the appropriately substituted aryl or heteroaryl boronic acid or a cyclic ester thereof formed with an organic diol, e.g. pinacol, 1,3 -propanediol or neopentyl glycol.
  • the reaction is typically effected in the presence of a transition metal catalyst, e.g.
  • a base e.g. an inorganic base such as sodium carbonate or potassium carbonate.
  • a compound of formula (I) wherein R 1 represents halogen, e.g. bromo, may be converted into the corresponding compound wherein R 1 represents an optionally substituted aryl or heteroaryl moiety via a two-step procedure which comprises: (i) reaction with bis(pinacolato)diboron; and (ii) reaction of the compound thereby obtained with an appropriately substituted bromoaryl or bromoheteroaryl derivative.
  • Step (i) is conveniently effected in the presence of a transition metal catalyst such as [1,1 '-bis- (diphenylphosphino)ferrocene]dichloropalladium(II).
  • Step (ii) is conveniently effected in the presence of a transition metal catalyst such as tetrakis(triphenylphosphine)- palladium(O) and a base, e.g. an inorganic base such as sodium carbonate.
  • a transition metal catalyst such as tetrakis(triphenylphosphine)- palladium(O)
  • a base e.g. an inorganic base such as sodium carbonate.
  • a compound of formula (I) wherein R 1 represents halogen, e.g. bromo, may be converted into the corresponding compound wherein R 1 represents an optionally substituted imidazol-l-yl moiety by treatment with the appropriately substituted imidazole derivative, typically in the presence of copper(II) acetate and an organic base such as N,N,NyV'-tetramethylethy lenediamine (TMED A) .
  • TMED A N,N,NyV'-tetramethylethy lenediamine
  • a compound of formula (I) wherein R 1 represents halogen, e.g. bromo, may be converted into the corresponding compound wherein R 1 represents 2-(methoxycarbonyl)- ethyl via a two-step procedure which comprises: (i) reaction with methyl acrylate; and (ii) catalytic hydrogenation of the alkenyl derivative thereby obtained, typically by treatment with a hydrogenation catalyst, e.g. palladium on charcoal, under an atmosphere of hydrogen gas.
  • Step (i) is typically effected in the presence of a transition metal catalyst, e.g. palladium(II) acetate, and a reagent such as tri(ortAo-tolyl)phosphine.
  • a compound of formula (I) wherein R 1 represents 6-methoxypyridin-3-yl may be converted into the corresponding compound wherein R 1 represents 2-oxo-l,2-dihydro- pyridin-5-yl by treatment with pyridine hydrochloride.
  • a compound of formula (I) wherein R 1 represents 2-oxo-l,2-dihydropyridin-5-yl may be converted into the corresponding compound wherein R 1 represents 2-oxopiperidin- 5-yl by catalytic hydrogenation, typically by treatment with gaseous hydrogen in the presence of a hydrogenation catalyst such as platinum(IV) oxide.
  • a compound of formula (I) containing an ester moiety e.g. a C 2 _ 6 alkoxycarbonyl group such as methoxycarbonyl or ethoxycarbonyl, may be converted into the
  • the transformation may be effected by treatment with a base, typically an inorganic base such as an alkali metal hydroxide, e.g. sodium hydroxide or lithium hydroxide; or an organic base such as sodium methoxide.
  • a base typically an inorganic base such as an alkali metal hydroxide, e.g. sodium hydroxide or lithium hydroxide; or an organic base such as sodium methoxide.
  • a compound of formula (I) containing an N-(tert-butoxycarbonyl) moiety may be converted into the corresponding compound containing an N-H moiety by treatment with an acid, e.g. a mineral acid such as hydrochloric acid, or an organic acid such as trifluoroacetic acid.
  • an acid e.g. a mineral acid such as hydrochloric acid, or an organic acid such as trifluoroacetic acid.
  • a compound of formula (I) wherein R 1 represents a substituent containing at least one nitrogen atom, which substituent is linked to the remainder of the molecule via a nitrogen atom may be prepared by reacting a compound of formula (I) wherein R 1 represents halogen, e.g. bromo, with the appropriate compound of formula R'-H [e.g. 1- (pyridin-3-yl)piperazine].
  • R'-H e.g. 1- (pyridin-3-yl)piperazine
  • a compound of formula (IIA) wherein R 11 represents halogen, e.g. bromo, may be converted into the corresponding compound of formula (IIB) wherein V is N and R 23 represents methyl via a four- step procedure which comprises: (i) reaction with isopropenyl acetate; (ii) treatment with potassium fluoride; (iii) treatment of the 2-oxopropyl derivative thereby obtained with N,N-dimethylformamide dimethyl acetal, ideally at an elevated temperature; and (iv) reaction of the material thereby obtained with the appropriate amidine derivative of formula R 21 -C(NH)NH 2 .
  • Step (i) is conveniently accomplished with the assistance of a transition metal catalyst, e.g.
  • Step (iv) is typically effected at an elevated temperature in a suitable solvent, e.g. a Ci_ 4 alkanol such as methanol or ethanol, in the presence of a base, e.g. an alkali metal alkoxide such as sodium ethoxide or potassium tert-butoxide, or an alkali metal carbonate such as potassium carbonate.
  • a suitable solvent e.g. a Ci_ 4 alkanol such as methanol or ethanol
  • a base e.g. an alkali metal alkoxide such as sodium ethoxide or potassium tert-butoxide, or an alkali metal carbonate such as potassium carbonate.
  • a compound of formula (IIB) wherein R 21 represents ethenyl may be prepared by reacting a compound of formula (IIB) wherein R 21 represents halogen, e.g. chloro, with potassium vinyl trifluoroborate.
  • the reaction is typically effected in the presence of a transition metal catalyst, e.g. [1,1 '-bis(diphenylphosphino)ferrocene]dichloropalladium(II), and a base, e.g. an organic base such as triethylamine.
  • a compound of formula (IIB) wherein R 21 represents a substituent containing at least one nitrogen atom, which substituent is linked to the remainder of the molecule via a nitrogen atom may be prepared by reacting a compound of formula (IIB) wherein R 21 represents halogen, e.g. chloro, with the appropriate compound of formula R 21 -H [e.g. 2- methoxyethylamine, pyrrolidin-3-ol, l-(methylsulfonyl)piperazine, piperazin-2-one, thiomorpholine, l,4-diazepan-5-one or an appropriately substituted azaspiroalkane] in the presence of a base, e.g. an organic base such as triethylamine.
  • a base e.g. an organic base such as triethylamine.
  • a compound of formula (I) containing a halogen atom, e.g. chloro, may be converted into the corresponding compound containing a -N-C(O)- or -N-S(0) 2 - moiety by treatment with the appropriate amide or sulphonamide derivative containing a -NH-C(O)- or -NH-S(0) 2 - functionality at an elevated temperature in the presence of a transition metal salt, e.g. palladium(II) acetate, 2,2'-bis(diphenylphosphino)-l,l '-binaphthalene (BINAP), and a base, typically an inorganic base, e.g. a carbonate salt such as cesium carbonate.
  • a transition metal salt e.g. palladium(II) acetate, 2,2'-bis(diphenylphosphino)-l,l '-binaphthalene (BINAP)
  • a base typically an inorganic base,
  • a compound of formula (I) containing a carboxy (-C0 2 H) moiety may be converted into the corresponding compound containing a -CONR b R c moiety by treatment with the appropriate amine of formula H-NR b R c in the presence of 0-(7-azabenzotriazol- l-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate (HATU), and a base, typically an organic base such as N,N-diisopropylethylamine.
  • HATU 0-(7-azabenzotriazol- l-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate
  • the desired product can be separated therefrom at an appropriate stage by conventional methods such as preparative HPLC; or column chromatography utilising, for example, silica and/or alumina in conjunction with an appropriate solvent system.
  • the diastereomers may then be separated by any convenient means, for example by crystallisation, and the desired enantiomer recovered, e.g. by treatment with an acid in the instance where the diastereomer is a salt.
  • a racemate of formula (I) may be separated using chiral HPLC.
  • a particular enantiomer may be obtained by using an appropriate chiral intermediate in one of the processes described above.
  • a particular enantiomer may be obtained by performing an enantiomer-specific enzymatic biotransformation, e.g. an ester hydrolysis using an esterase, and then purifying only the enantiomerically pure hydrolysed acid from the unreacted ester antipode.
  • the compounds in accordance with this invention potently inhibit T Fa-induced NF-KB activation in the following assay.
  • HEK-293 cells Stimulation of HEK-293 cells by TNFa leads to activation of the NF- ⁇ pathway.
  • the reporter cell line used to determine TNFa activity was purchased from InvivoGen.
  • HEK-BlueTM CD40L is a stable transfectant expressing SEAP (secreted alkaline phosphatase) under the control of the ⁇ minimal promoter fused to five NF-KB binding sites. Secretion of SEAP by these cells is stimulated in a dose-dependent manner by TNFa (0.5 ng/mL).
  • Compounds were diluted from 10 mM DMSO stocks (final assay concentration 0.3%) to generate a 10-point 3-fold serial dilution curve (30,000 nM to 2 nM final concentration).
  • pTSA /?-toluenesulfonic acid
  • TBAF : tetra-n-butylammonium fluoride
  • Si0 2 silica h: hour
  • HATU 0-(7-azabenzotriazol- 1 -yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate
  • TMEDA N,N,N',N'-tetramethylethylenediamine
  • Pd(PPh 3 ) 4 tetrakis(triphenylphosphine)palladium(0)
  • Pd(PPh 3 ) 2 Cl 2 bis(triphenylphosphine)dichloropalladium(II)
  • BINAP 2,2 '-bis(diphenylphosphino)- 1 , 1 '-binaphthalene
  • Analytical LCMS data for Examples 56-403, 410-443, 446-488, 500-507, 512, 519-523 and 525-528 were obtained using Method 6 below.
  • Analytical LCMS data for Examples 404-409, 444, 445, 489-499, 508-511, 513-518 and 524 were obtained using Method 7 below.
  • Method 1 Waters X-Bridge, CI 8, 2.1 x 20 mm, 2.5 ⁇ column.
  • Mobile phase B acetonitrile + 5% mobile phase A + 0.1% formic acid
  • Method 2 Waters XBridge, CI 8, 2.1 x 20 mm, 2.5 ⁇ column.
  • Method 3 Luna C18, 21.2 mm, 5 mm column, pH 2.5.
  • Mobile phase A 99.92%> water and 0.08% formic acid.
  • Mobile phase B 99.92% acetonitrile and 0.08% formic acid.
  • Gradient program (flow rate 25 mL/min, column temperature ambient): variable gradient.
  • Method 4 Waters XBridge Prep MS C18 ODB, 30 x 50 mm, 5 ⁇ column.
  • Mobile phase A water.
  • Eluent A 99% acetonitrile + 1% 10 mM ammonium bicarbonate (pH 9.5) in MilliQ water
  • Eluent B 10 mM ammonium bicarbonate (pH 9.5) in MilliQ water
  • the Waters Acquity SQD system comprises an Acquity PDA, Acquity Column Manager, Acquity Sample Manager and Acquity Sample Organiser, Acquity Binary Solvent
  • MSD ESI pos/neg
  • Triethylamine (20 mL, 141.0 mmol) was added to stirred solution of l-fluoro-2- nitrobenzene (10.0 g, 70 mmol) and a-methylbenzylamine (17.1 g, 141.0 mmol) in ethanol (50 mL) at 0°C.
  • the reaction mixture was heated to 80°C for 6 h and
  • Triethylamine (37.9 mL, 272.0 mmol) was added to a stirred solution of 4-bromo- 2-fluoro-l -nitrobenzene (30.0 g, 136.0 mmol) and -methylbenzylamine (32.9 g, 272.0 mmol) in ethanol (200 mL) at 0°C.
  • the reaction mixture was heated to 80°C for 6 h, then cooled and concentrated in vacuo.
  • the residue was dissolved in EtOAc (90 mL) and washed with saturated brine (2 x 30 mL). The combined organics were extracted and dried over anhydrous sodium sulfate and concentrated in vacuo to give a yellow solid.
  • Benzimidazol-l-ylamine (0.55 g, 4.1 mmol), 2-bromo-l,4-dimethylbenzene (0.84 g, 4.5 mmol), cesium carbonate (2.67 g, 8.3 mmol), tris(dibenzylideneacetone)- dipalladium(O) (0.19 g, 0.21 mmol) and 2-dicyclohexylphosphino-2',4',6'-triisopropyl- biphenyl (0.39 g, 0.83 mmol) were dissolved in anhydrous DMF (40 mL). The reaction mixture was degassed and then heated at 100°C for 4 h.
  • reaction mixture was concentrated in vacuo and partitioned between water (50 mL) and ethyl acetate (50 mL). The organic layer was extracted, dried with sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si0 2 , 5% MeOH/DCM), yielding the title compound (0.54 g, 55%) as a white solid.
  • 6-Methoxypyridin-3-ylboronic acid (40.0 g, 262 mmol), 4-bromo-2-fluoro-l- nitrobenzene (52.3 g, 238 mmol) and Na 2 C0 3 (76 g, 713 mmol) were mixed in 1,2- dimethoxyethane (1200 mL) and water (300 mL).
  • the reaction mixture was purged with argon.
  • Pd(PPh 3 ) 2 Cl 2 (8.34 g, 11.89 mmol) was added and the mixture was heated to 90°C for 1.5 h.
  • EtOAc and water were added.
  • the organic phase was separated and the aqueous phase was extracted twice with EtOAc.
  • the combined organic layers were dried over Na 2 S0 4 , after which the solvent was removed in vacuo. The residue was
  • the title compound can be synthesized from Intermediate 37 ' by the method of Intermediate 35.
  • Step 1 To a solution of 2-(difluoromethoxy)benzylamine (5.00 g, 28.9 mmol) in DMF (50 mL) were added 4-bromo-2-fluoronitrobenzene (6.68 g, 30.3 mmol) and potassium carbonate (4.80 g, 34.68 mmol). The mixture was stirred at 100°C overnight. After this time the mixture was diluted with water (100 mL) and cooled to room temperature. The resultant solid precipitate was filtered off, washed with water and dried under vacuum, to give 5-bromo-N- [2-(difluoromethoxy)benzyl] -2-nitroaniline (10.00 g, 93%) as a yellow solid.
  • Step 2 To a solution of the foregoing material (3.00 g, 8.04 mmol) in ethanol (30 mL) and 10% HC1 (15 mL) was added tin(II) chloride (4.57 g, 24.12 mmol). The mixture was stirred at 80°C overnight. After this time the mixture was basified with 10% aqueous NaOH solution (25 mL) and the mixture was cooled to room temperature. The mixture was then extracted with EtOAc (4 x 100 mL), and the combined organic layers were dried (Na 2 S0 4 ), filtered and concentrated in vacuo.
  • the crude product was purified by chromatography (Si0 2 ; 5-30% EtOAc/hexane) to obtain 5-bromo-N 1 -[2-(difluoro- methoxy) benzyl] 'benzene- 1 ,2 -diamine (1.74 g, 63%) as a yellow oil.
  • Step 3 A solution of the foregoing material (545 mg, 1.59 mmol) in acetic acid (10 mL) was heated at 80°C for 18 h. The reaction mixture was allowed to cool to ambient temperature, the volatiles were removed in vacuo, and the crude product was purified by chromatography (Si0 2 ; 20-60%) EtOAc/hexane), to obtain the title compound (479 mg, 82%) as a brown solid.
  • Example 488 (2.5 g, 7.2 mmol) was treated with thionyl chloride (6 mL) and stirred at room temperature for 30 minutes. After this time, the reaction mixture was concentrated in vacuo and the residue was partitioned between DCM and saturated aqueous Na 2 C0 3 solution. The aqueous phase was extracted with further DCM and the combined organic fractions were dried by passing through a phase separator cartridge, then evaporated in vacuo, to afford the title compound (2.7 g, 98%) as an off white solid.

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Abstract

A series of benzimidazole derivatives, being potent modulators of human TNFα activity, are accordingly of benefit in the treatment and/or prevention of various human ailments, including autoimmune and inflammatory disorders; neurological and neurodegenerative disorders; pain and nociceptive disorders; cardiovascular disorders; metabolic disorders; ocular disorders; and oncological disorders.

Description

TNF -ALPHA MODULATING BENZ IMIDAZOLES
The present invention relates to a class of benzimidazole derivatives, and to their use in therapy. These compounds are modulators of the signalling of TNFa, and are accordingly of benefit as pharmaceutical agents, especially in the treatment of adverse inflammatory and autoimmune disorders, neurological and neurodegenerative disorders, pain and nociceptive disorders, cardiovascular disorders, metabolic disorders, ocular disorders, and oncological disorders.
TNFa is the prototypical member of the Tumour Necrosis Factor (TNF) superfamily of proteins that share a primary function of regulating cell survival and cell death. One structural feature common to all known members of the TNF superfamily is the formation of trimeric complexes that bind to, and activate, specific TNF superfamily receptors. By way of example, TNFa exists in soluble and transmembrane forms and signals through two receptors, known as TNFR1 and TNFR2, with distinct functional endpoints.
Various products capable of modulating TNFa activity are already commercially available. All are approved for the treatment of inflammatory and autoimmune disorders such as rheumatoid arthritis and Crohn's disease. All currently approved products are macromolecular and act by inhibiting the binding of human TNFa to its receptor. Typical macromolecular TNFa inhibitors include anti-TNFa antibodies; and soluble TNFa receptor fusion proteins. Examples of commercially available anti-TNFa antibodies include fully human antibodies such as adalimumab (Humira®) and golimumab
(Simponi®), chimeric antibodies such as infliximab (Remicade®), and pegylated Fab' fragments such as certulizumab pegol (Cimzia®). An example of a commercially available soluble TNFa receptor fusion protein is etanercept (Enbrel®).
TNF superfamily members, including TNFa itself, are implicated in a variety of physiological and pathological functions that are believed to play a part in a range of conditions of significant medical importance (see, for example, M.G. Tansey & D.E. Szymkowski, Drug Discovery Today, 2009, 14, 1082-1088; and F.S. Carneiro et al., J. Sexual Medicine, 2010, 7, 3823-3834).
The compounds in accordance with the present invention, being potent modulators of human TNFa activity, are therefore beneficial in the treatment and/or prevention of various human ailments. These include autoimmune and inflammatory disorders;
neurological and neurodegenerative disorders; pain and nociceptive disorders;
cardiovascular disorders; metabolic disorders; ocular disorders; and oncological disorders.
In addition, the compounds in accordance with the present invention may be beneficial as pharmacological standards for use in the development of new biological tests and in the search for new pharmacological agents. Thus, in one embodiment, the compounds of this invention may be useful as radioligands in assays for detecting pharmacologically active compounds. In an alternative embodiment, certain compounds of this invention may be useful for coupling to a fluorophore to provide fluorescent conjugates that can be utilised in assays (e.g. a fluorescence polarisation assay) for detecting pharmacologically active compounds.
The compounds in accordance with the present invention potently neutralise the activity of T Fa in a commercially available HEK-293 derived reporter cell line known as HEK-Blue™ CD40L. This cell line is a stable trans fectant expressing SEAP (secreted alkaline phosphatase) under the control of the IFNP minimal promoter fused to five NF-KB binding sites. Secretion of SEAP by these cells is stimulated in a concentration-dependent manner by TNFa. When tested in the HEK-293 bioassay, the compounds of the present invention exhibit an IC50 value of 50 μΜ or less, generally of 20 μΜ or less, usually of 5 μΜ or less, typically of 1 μΜ or less, suitably of 500 nM or less, ideally of 100 nM or less, and preferably of 20 nM or less (the skilled person will appreciate that a lower IC50 figure denotes a more active compound).
The present invention provides a compound of formula (I) or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof:
Figure imgf000003_0001
wherein E represents a covalent bond; or E represents -S(0)2- or -N(R4)-; or E represents an optionally substituted straight or branched Ci_4 alkylene chain;
Q represents a covalent bond; or Q represents -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- or -N(R5)S(0)2-; or Q represents an optionally substituted straight or branched Ci_6 alkylene chain optionally comprising one, two or three heteroatom-containing linkages independently selected from -0-, -S-, -S(0)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- and -N(R5)S(0)2-;
Y represents C3-7 cycloalkyl, aryl, C3-7 heterocycloalkyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents;
Z represents hydrogen, halogen or trifluoromethyl; or Z represents Ci_6 alkyl, C3_7 cycloalkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents -Ί}-Ί} or -Z1-C(0)-Z2, either of which moieties may be optionally substituted by one or more substituents;
Z1 represents a divalent radical derived from an aryl, C3_7 heterocycloalkyl or heteroaryl group;
Z2 represents aryl, C3-7 heterocycloalkyl, C3-7 heterocycloalkenyl,
(C4_9)heterobicycloalkyl, (C4_9)spiroheterocycloalkyl or heteroaryl;
R1, R2 and R3 independently represent hydrogen, halogen, cyano, nitro, hydroxy, trifluoromethyl, trifluoromethoxy, -ORa, -SRa, -SORa, -S02Ra, -OS02Ra, -SF5, -NRbRc, -NRcCORd, -NRcC02Rd, -NHCONRbRc, -NRcS02Re, -N(S02Re)2, -NHS02NRbRc, -CORd, -C02Rd, -CONRbRc, -CON(ORa)Rb or -S02NRbRc; or Ci_6 alkyl, C2_6 alkenyl, C2_6 alkynyl, C3_7 cycloalkyl, C4_7 cycloalkenyl, C3_7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, C3_7
heterocycloalkenyl, C4_g heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl,
(C3-7)heterocycloalkyl-aryl-, (C3-7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl- (C3_7)heterocycloalkyl-, (C3-7)cycloalkyl-heteroaryl-, (C3-7)cycloalkyl-(Ci_6)alkyl- heteroaryl-, (C4_7)cycloalkenyl -heteroaryl-, (C4_9)bicycloalkyl-heteroaryl-,
(C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl -heteroaryl-,
(C4_9)spiroheterocycloalkyl-heteroaryl- or (C3_7)heterocycloalkyl-heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents;
R4 and R5 independently represent hydrogen or Ci_6 alkyl; Ra represents trifluoromethyl; or Ci_6 alkyl, C3_7 cycloalkyl, C3_7 cycloalkyl(Ci_6)- alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, heteroaryl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents;
Rb and Rc independently represent hydrogen or trifluoromethyl; or Ci_6 alkyl, C3_7 cycloalkyl, C3_7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, heteroaryl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents; or
Rb and Rc, when taken together with the nitrogen atom to which they are both attached, represent azetidin-l-yl, pyrrolidin-l-yl, oxazolidin-3-yl, isoxazolidin-2-yl, thiazolidin-3-yl, isothiazolidin-2-yl, piperidin-l-yl, morpholin-4-yl, thiomorpholin-4-yl, piperazin-l-yl, homopiperidin-l-yl, homomorpholin-4-yl or homopiperazin-l-yl, any of which groups may be optionally substituted by one or more substituents;
Rd represents hydrogen; or Ci_6 alkyl, C3_7 cycloalkyl, aryl, C3_7 heterocycloalkyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; and
Re represents Ci_6 alkyl, aryl or heteroaryl, any of which groups may be optionally substituted by one or more substituents;
for use in the treatment and/or prevention of disorders for which the administration of a modulator of TNFa function is indicated.
In another aspect, the present invention provides a compound of formula (I) as defined above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, for use in the treatment and/or prevention of an inflammatory or autoimmune disorder, a neurological or neurodegenerative disorder, pain or a nociceptive disorder, a cardiovascular disorder, a metabolic disorder, an ocular disorder, or an oncological disorder.
The present invention also provides a method for the treatment and/or prevention of disorders for which the administration of a modulator of TNFa function is indicated which comprises administering to a patient in need of such treatment an effective amount of a compound of formula (I) as defined above or an N-oxide thereof, or a
pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof. In another aspect, the present invention provides a method for the treatment and/or prevention of an inflammatory or autoimmune disorder, a neurological or neurodegenerative disorder, pain or a nociceptive disorder, a cardiovascular disorder, a metabolic disorder, an ocular disorder, or an oncological disorder, which comprises administering to a patient in need of such treatment an effective amount of a compound of formula (I) as defined above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof.
Where any of the groups in the compounds of formula (I) above is stated to be optionally substituted, this group may be unsubstituted, or substituted by one or more substituents. Typically, such groups will be unsubstituted, or substituted by one or two substituents.
For use in medicine, the salts of the compounds of formula (I) will be
pharmaceutically acceptable salts. Other salts may, however, be useful in the preparation of the compounds of use in the invention or of their pharmaceutically acceptable salts. Suitable pharmaceutically acceptable salts of the compounds of use in this invention include acid addition salts which may, for example, be formed by mixing a solution of the compound of use in the invention with a solution of a pharmaceutically acceptable acid such as hydrochloric acid, sulphuric acid, methanesulphonic acid, fumaric acid, maleic acid, succinic acid, acetic acid, benzoic acid, citric acid, tartaric acid or phosphoric acid. Furthermore, where the compounds of use in the invention carry an acidic moiety, e.g. carboxy, suitable pharmaceutically acceptable salts thereof may include alkali metal salts, e.g. sodium or potassium salts; alkaline earth metal salts, e.g. calcium or magnesium salts; ammonium salts; and salts formed with suitable organic ligands, e.g. quaternary ammonium salts.
The present invention includes within its scope solvates of the compounds of formula (I) above. Such solvates may be formed with common organic solvents, e.g. hydrocarbon solvents such as benzene or toluene; chlorinated solvents such as chloroform or dichloromethane; alcoholic solvents such as methanol, ethanol or isopropanol; ethereal solvents such as diethyl ether or tetrahydrofuran; or ester solvents such as ethyl acetate. Alternatively, the solvates of the compounds of formula (I) may be formed with water, in which case they will be hydrates.
The present invention also includes co-crystals within its scope. The technical term "co-crystal" is used to describe the situation where neutral molecular components are present within a crystalline compound in a definite stoichiometric ratio. The preparation of pharmaceutical co-crystals enables modifications to be made to the crystalline form of an active pharmaceutical ingredient, which in turn can alter its physicochemical properties without compromising its intended biological activity (see Pharmaceutical Salts and Co- crystals, ed. J. Wouters & L. Quere, RSC Publishing, 2012). Typical examples of co- crystal formers, which may be present in the co-crystal alongside the active
pharmaceutical ingredient, include Z-ascorbic acid, citric acid, glutaric acid, urea and nicotinamide.
Suitable alkyl groups which may be present on the compounds of use in the invention include straight-chained and branched Ci_6 alkyl groups, for example Ci_4 alkyl groups. Typical examples include methyl and ethyl groups, and straight-chained or branched propyl, butyl and pentyl groups. Particular alkyl groups include methyl, ethyl, n- propyl, isopropyl, n-butyl, sec -butyl, isobutyl, tert-butyl, 2,2-dimethylpropyl and 3- methylbutyl. Derived expressions such as "Ci_6 alkoxy", "Ci_6 alkylthio", "Ci_6 alkylsulphonyl" and "C1-6 alkylamino" are to be construed accordingly.
The expression "Ci_4 alkylene chain" refers to a divalent straight or branched alkylene chain containing 1 to 4 carbon atoms. Typical examples include methylene, ethylene, methylmethylene, ethylmethylene and dimethylmethylene.
Suitable C2_6 alkenyl groups include vinyl and allyl.
Suitable C2_6 alkynyl groups include ethynyl and propargyl.
Suitable C3-7 cycloalkyl groups, which may comprise benzo-fused analogues thereof, include cyclopropyl, cyclobutyl, benzocyclobutenyl, cyclopentyl, indanyl, cyclohexyl and cycloheptyl.
Suitable C4_7 cycloalkenyl groups include cyclobutenyl, cyclopentenyl,
cyclohexenyl and cycloheptenyl.
Typical bicycloalkyl groups include bicyclo[3.1.0]hexanyl.
Suitable aryl groups include phenyl and naphthyl, preferably phenyl.
Suitable aryl(Ci_6)alkyl groups include benzyl, phenylethyl, phenylpropyl and naphthy lmethy 1.
The term "C3_7 heterocycloalkyl" as used herein refers to saturated monocyclic rings containing 3 to 7 carbon atoms and at least one heteroatom selected from oxygen, sulphur and nitrogen, and may comprise benzo-fused analogues thereof. Suitable heterocycloalkyl groups include oxetanyl, azetidinyl, tetrahydrofuranyl, dihydrobenzo- furanyl, dihydrobenzothienyl, pyrrolidinyl, indolinyl, isoindolinyl, oxazolidinyl, thiazolidinyl, isothiazolidinyl, imidazolidinyl, tetrahydropyranyl, chromanyl,
tetrahydrothiopyranyl, piperidinyl, 1,2,3,4-tetrahydroquinolinyl, 1,2,3,4-tetrahydro- isoquinolinyl, piperazinyl, 1,2,3,4-tetrahydroquinoxalinyl, homopiperazinyl, morpholinyl, benzoxazinyl, thiomorpholinyl, diazepanyl and azocanyl.
The term "C3-7 heterocycloalkenyl" as used herein refers to monounsaturated or polyunsaturated monocyclic rings containing 3 to 7 carbon atoms and at least one heteroatom selected from oxygen, sulphur and nitrogen, and may comprise benzo-fused analogues thereof. Suitable heterocycloalkenyl groups include thiazolinyl, imidazolinyl, dihydropyranyl, dihydrothiopyranyl and 1,2,3,6-tetrahydropyridinyl.
Typical heterobicycloalkyl groups include quinuclidinyl, 3-azabicyclo[3.1.0]- hexanyl, 5-aza-2-oxabicyclo[2.2.1]heptanyl, 6-azabicyclo[3.2.0]heptanyl, 3-azabicyclo- [4.1.0]heptanyl, 5-aza-2-oxabicyclo[2.2.2]octanyl, 3-azabicyclo[3.2.1]octanyl, 8- azabicyclo[3.2.1]octanyl, 3,8-diazabicyclo[3.2.1]octanyl and 3,9-diazabicyclo[4.2.1]- nonanyl.
Suitable spiroheterocycloalkyl groups include 5-azaspiro[2.4]heptanyl, 2-oxa-6- azaspiro[3.3]heptanyl, 2-oxa-6-azaspiro[3.4]octanyl, 2-oxa-6-azaspiro[3.5]nonanyl, 2-oxa- 7-azaspiro[3.5]nonanyl and 7-oxa-2-azaspiro[3.5]nonanyl.
Suitable heteroaryl groups include furyl, benzofuryl, dibenzofuryl, thienyl, thieno[2,3-c]pyrazolyl, thieno[3,4-£][l,4]dioxinyl, benzothienyl, dibenzothienyl, pyrrolyl, indolyl, pyrrolo[2,3-£]pyridinyl, pyrrolo[3,4-£]pyridinyl, pyrrolo[3,2-c]pyridinyl, pyrazolyl, pyrazolo[l,5-a]pyridinyl, pyrazolo[3,4-d]pyrimidinyl, indazolyl, 4,5,6,7- tetrahydroindazolyl, oxazolyl, benzoxazolyl, isoxazolyl, thiazolyl, benzothiazolyl, isothiazolyl, imidazolyl, benzimidazolyl, imidazo[2,l-¾]thiazolyl, imidazo[l,2-a]pyridinyl, imidazo[4,5-£]pyridinyl, purinyl, imidazo[l,2-a]pyrimidinyl, imidazo[l,2-a]pyrazinyl, oxadiazolyl, thiadiazolyl, triazolyl, [l,2,4]triazolo[l,5-a]pyrimidinyl, benzotriazolyl, tetrazolyl, pyridinyl, quinolinyl, isoquinolinyl, naphthyridinyl, pyridazinyl, cinnolinyl, phthalazinyl, pyrimidinyl, quinazolinyl, pyrazinyl, quinoxalinyl, pteridinyl, triazinyl and chromenyl groups.
The term "halogen" as used herein is intended to include fluorine, chlorine, bromine and iodine atoms, typically fluorine, chlorine or bromine.
Where the compounds of formula (I) have one or more asymmetric centres, they may accordingly exist as enantiomers. Where the compounds of use in the invention possess two or more asymmetric centres, they may additionally exist as diastereomers. The invention is to be understood to extend to the use of all such enantiomers and diastereomers, and to mixtures thereof in any proportion, including racemates. Formula (I) and the formulae depicted hereinafter are intended to represent all individual stereoisomers and all possible mixtures thereof, unless stated or shown otherwise. In addition, compounds of formula (I) may exist as tautomers, for example keto (CH2C=0)-i→enol (CH=CHOH) tautomers or amide ( HC=0)^→-hydroxyimine (N=COH) tautomers.
Formula (I) and the formulae depicted hereinafter are intended to represent all individual tautomers and all possible mixtures thereof, unless stated or shown otherwise.
It is to be understood that each individual atom present in formula (I), or in the formulae depicted hereinafter, may in fact be present in the form of any of its naturally occurring isotopes, with the most abundant isotope(s) being preferred. Thus, by way of example, each individual hydrogen atom present in formula (I), or in the formulae depicted hereinafter, may be present as a 1H, 2H (deuterium) or 3H (tritium) atom, preferably 1H. Similarly, by way of example, each individual carbon atom present in formula (I), or in the formulae depicted hereinafter, may be present as a 12C, 13C or 14C atom, preferably 12C.
In one aspect, the present invention provides a compound of formula (I) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, wherein
Q represents -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-,
-S(0)2N(R5)- or -N(R5)S(0)2-; or Q represents an optionally substituted straight or branched Ci_6 alkylene chain optionally comprising one, two or three heteroatom- containing linkages independently selected from -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- and -N(R5)S(0)2-;
Z represents C3_7 cycloalkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents -Zl-Z2 or -Z1-C(0)-Z2, either of which moieties may be optionally substituted by one or more substituents; and
E, Y, R1, R2, R3, R5, Z1 and Z2 are as defined above.
In another aspect, the present invention provides a compound of formula (I) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, wherein R1 represents halogen or cyano; or Ci_6 alkyl, C2_6 alkenyl, C2_6 alkynyl, C3_7 cycloalkyl, C4_7 cycloalkenyl, C3_7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, C3_7 heterocycloalkenyl, C4_9 heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl(C3_7)heterocycloalkyl-,
(C3_7)cycloalkyl-heteroaryl-, (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, (C4_7)cycloalkenyl- heteroaryl-, (C4_9)bicycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl -heteroaryl-,
(C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl-, (C4_9)spiroheterocycloalkyl-heteroaryl- or
(C3_7)heterocycloalkyl-heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents; and
E, Q, Y, Z, R2 and R3 are as defined above.
In another aspect, the present invention provides a compound of formula (I) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a co-crystal thereof, wherein
R1 represents halogen or cyano; or Ci_6 alkyl, C2_6 alkenyl, C2_6 alkynyl, C3_7 cycloalkyl, C4_7 cycloalkenyl, C3_7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, C3_7 heterocycloalkenyl, C4_9 heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl(Ci_6)alkyl- aryl-, heteroaryl(C3_7)heterocycloalkyl-, (C3_7)cycloalkyl-heteroaryl-, (C3_7)cycloalkyl-
(Ci_6)alkyl -heteroaryl-, (C4_7)cycloalkenyl-heteroaryl-, (C3_7)heterocycloalkyl -heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents; and
E, Q, Y, Z, R2 and R3 are as defined above.
In another aspect, the present invention provides a compound of formula (I) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, wherein
R1 represents halogen or cyano; or Ci_6 alkyl, C2_6 alkenyl, C2_6 alkynyl, C3_7 cycloalkyl, C4_7 cycloalkenyl, C3_7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, C3_7 heterocycloalkenyl, C4_9 heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl(Ci_6)alkyl- aryl-, heteroaryl(C3_7)heterocycloalkyl-, (C4_7)cycloalkenyl -heteroaryl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or
(C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents; and
E, Q, Y, Z, R2 and R3 are as defined above.
Where the compounds in accordance with the invention comprise an optionally substituted straight or branched alkylene chain, typical values thereof include methylene (-CH2-), (methyl)methylene, ethylene (-CH2CH2-), (ethyl)methylene, (dimethyl)- methylene, (methyl)ethylene, propylene (-CH2CH2CH2-), (propyl)methylene and (dimethyl)ethylene, any of which chains may be optionally substituted by one or more substituents. Suitably, such chains are unsubstituted, monosubstituted or disubstituted. Typically, such chains are unsubstituted or monosubstituted. In one embodiment, such chains are unsubstituted. In another embodiment, such chains are monosubstituted. In a further embodiment, such chains are disubstituted.
Examples of typical substituents on the alkylene chain which may be present in a compound in accordance with the invention include halogen, trifluoromethyl, oxo, hydroxy, Ci_6 alkoxy, trifluoromethoxy, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, aminocarbonyl, Ci_6 alkylaminocarbonyl and di(Ci_6)alkylaminocarbonyl.
Examples of suitable substituents on the alkylene chain which may be present in a compound in accordance with the invention include halogen, trifluoromethyl, hydroxy, Ci_6 alkoxy and amino.
Specific examples of suitable substituents on the alkylene chain which may be present in a compound in accordance with the invention include fluoro, trifluoromethyl, hydroxy, methoxy and amino.
Generally, E represents a covalent bond; or E represents -N(R4)-; or E represents an optionally substituted straight or branched Ci_4 alkylene chain.
Typically, E represents -N(R4)-; or E represents an optionally substituted straight or branched Ci_4 alkylene chain.
In a selected aspect, E represents an optionally substituted straight or branched Ci_4 alkylene chain.
Suitably, E represents a covalent bond; or E represents -N(R4)-; or E represents methylene (-CH2-), (methyl)methylene or (ethyl)methylene, any of which groups may be optionally substituted by one or more substituents. Suitable values of E include -N(R4)-, -CH2-, -CH(CH3)- and -CH(CH2CH3)-; or E may represent a covalent bond.
In a first embodiment, E represents a covalent bond, whereby the integer Y is attached directly to the benzimidazole nucleus.
In a second embodiment, E represents -S(0)2-.
In a third embodiment, E represents -N(R4)-.
In a fourth embodiment, E represents -CH2-.
In a fifth embodiment, E represents -CH(CH3)-. In a particular aspect of that embodiment, the -CH(CH3)- linkage represented by E is in the (S) stereochemical configuration.
In a sixth embodiment, E represents -CH(CH2CH3)-.
In a first embodiment, Q represents a covalent bond, whereby the integer Z is attached directly to the benzimidazole nucleus.
In a second embodiment, Q represents -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-,
-C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- or -N(R5)S(0)2-. In a first aspect of that embodiment, Q represents -0-. In a second aspect of that embodiment, Q represents -S-. In a third aspect of that embodiment, Q represents -S(O)-. In a fourth aspect of that embodiment, Q represents -S(0)2-. In a fifth aspect of that embodiment, Q represents -N(R5)-. In a sixth aspect of that embodiment, Q represents -C(0)N(R5)-. In a seventh aspect of that embodiment, Q represents -N(R5)C(0)-. In an eighth aspect of that embodiment, Q represents -S(0)2N(R5)-. In a ninth aspect of that embodiment, Q represents -N(R5)S(0)2-.
In a third embodiment, Q represents an optionally substituted straight or branched Ci_6 alkylene chain optionally comprising one, two or three heteroatom-containing linkages independently selected from -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- and -N(R5)S(0)2-. In a first aspect of that embodiment, Q represents an optionally substituted straight or branched Ci_6 alkylene chain. In a second aspect of that embodiment, Q represents an optionally substituted straight or branched Ci_6 alkylene chain comprising one heteroatom-containing linkage independently selected from -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- and -N(R5)S(0)2-. In a third aspect of that embodiment, Q represents an optionally substituted straight or branched Ci_6 alkylene chain comprising two heteroatom- containing linkages independently selected from -0-, -S-, -S(0)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- and -N(R5)S(0)2-. In a fourth aspect of that embodiment, Q represents an optionally substituted straight or branched Ci_6 alkylene chain comprising three heteroatom-containing linkages independently selected from -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- and -N(R5)S(0)2-. In a fifth aspect of that embodiment, Q represents an optionally substituted straight or branched Ci_6 alkylene chain comprising one, two or three heteroatom-containing linkages independently selected from -0-, -S-, -N(R5)-, -C(0)N(R5)- and -N(R5)C(0)-.
Typically, Q represents a covalent bond; or Q represents -S(0)- or -S(0)2-; or Q represents an optionally substituted straight or branched Ci_6 alkylene chain optionally comprising one or two heteroatom-containing linkages selected from -0-, -S-, -N(R5)-, -C(0)N(R5)-, and -N(R5)C(0)-.
Selected examples of typical substituents on the linkage represented by Q include halogen, trifluoromethyl, hydroxy, Ci_6 alkoxy and amino.
Specific examples of typical substituents on the linkage represented by Q include fluoro, trifluoromethyl, hydroxy, methoxy and amino.
Suitably, Q represents a covalent bond; or Q represents -S(0)- or -S(0)2-; or Q represents -CH2-, -CH(F)-, -CF2-, -CH(CH3)-, -CH(OH)-, -CH(OCH3)-, -CH(NH2)-, -CH2CH2-, -CH(OH)CH2-, -CH(OH)CF2-, -CH(OCH3)CH2-, -CH20-, -CH(CH3)0-, -C(CH3)20-, -CH(CH2CH3)0-, -CH(CF3)0-, -CH2S-, -CH2N(R5)-, -CH2CH2CH2-, -CH(OH)CH2CH2-, -CH(OCH3)CH2CH2-, -CH2CH20-, -CH2OCH2-, -CH2OCH(F)-, -CH2OCF2-, -CH2OCH(CH3)-, -CH(CH3)OCH2-, -CH2OC(CH3)2-, -C(CH3)2OCH2-, -CH2SCH2-, -CH2CH2N(R5)-, -CH2N(R5)CH2-, -CH2CH2OCH2-, -CH2CH2N(R5)C(0)-, -CH2OCH2CH2-, -CH2OCH2CF2-, -CH2OCH2CH(CH3)-, -CH2OCH(CH3)CH2-,
-CH2OC(CH3)2CH2-, -CH2OCH2CH(CH3)CH2-, -CH2OCH2CH20-,
-CH2OCH2C(0)N(R5)- or -CH2OCH2CH2OCH2-. Additional values include -N(R5)-, -CH(CH2OH)-, -CH2S(0)-, -CH2S(0)2-, -CH2S(0)CH2-, -CH2S(0)2CH2-, and
-CH2N(R5)C(0)-.
Particular values of Q include -CH2-, -CH20-, -CH2S-, and -CH2OCH2-. In a first embodiment, Q represents -CH2-. In a second embodiment, Q represents -CH20-. In a third embodiment, Q represents -CH2S-. In a fourth embodiment, Q represents
-CH2OCH2-.
Generally, Y represents C3_7 cycloalkyl, aryl or heteroaryl, any of which groups may be optionally substituted by one or more substituents. Additionally, Y may represent C3_7 heterocycloalkyl, which group may be optionally substituted by one or more substituents.
Typically, Y represents aryl or heteroaryl, either of which groups may be optionally substituted by one or more substituents. Additionally, Y may represent C3-7 heterocycloalkyl, which group may be optionally substituted by one or more substituents.
In a first embodiment, Y represents optionally substituted C3_7 cycloalkyl. In one aspect of that embodiment, Y represents unsubstituted C3_7 cycloalkyl. In another aspect of that embodiment, Y represents monosubstituted C3_7 cycloalkyl. In a further aspect of that embodiment, Y represents disubstituted C3_7 cycloalkyl.
In a second embodiment, Y represents optionally substituted aryl. In one aspect of that embodiment, Y represents unsubstituted aryl. In another aspect of that embodiment, Y represents monosubstituted aryl. In a further aspect of that embodiment, Y represents disubstituted aryl.
In a third embodiment, Y represents optionally substituted C3_7 heterocycloalkyl. In one aspect of that embodiment, Y represents unsubstituted C3_7 heterocycloalkyl. In another aspect of that embodiment, Y represents monosubstituted C3_7 heterocycloalkyl. In a further aspect of that embodiment, Y represents disubstituted C3_7 heterocycloalkyl.
In a fourth embodiment, Y represents optionally substituted heteroaryl. In one aspect of that embodiment, Y represents unsubstituted heteroaryl. In another aspect of that embodiment, Y represents monosubstituted heteroaryl. In a further aspect of that embodiment, Y represents disubstituted heteroaryl.
Suitably, Y represents benzocyclobutenyl, phenyl, thiazolyl or pyridinyl, any of which groups may be optionally substituted by one or more substituents. Additionally, Y may represent pyrrolidinyl, thieno[2,3-c]pyrazolyl, indazolyl, isoxazolyl and imidazo[2,l- £]thiazolyl, any of which groups may be optionally substituted by one or more
substituents.
In a selected embodiment, Y represents phenyl, which group may be optionally substituted by one or more substituents.
In a selected embodiment, Y represents thiazolyl, especially thiazol-4-yl, which group may be optionally substituted by one or more substituents.
Examples of optional substituents which may be present on the moiety Y include one, two or three substituents independently selected from halogen, cyano, nitro, Ci_6 alkyl, trifluoromethyl, hydroxy, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_6 alkylthio, Ci_6 alkylsulfmyl, Ci_6 alkylsulfonyl, amino, Ci_6 alkylamino, di(Ci_6)alkyl- amino, arylamino, C2_6 alkylcarbonylamino, Ci_6 alkylsulfonylamino, formyl, C2_6 alkylcarbonyl, C3-6 cycloalkylcarbonyl, C3-6 heterocycloalkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulfonyl, Ci_6 alkylaminosulfonyl and di(Ci_6)alkylaminosulfonyl. Additional examples include benzyl and methylenedioxy.
Typical examples of optional substituents on the moiety Y include halogen, Ci_6 alkyl, trifluoromethyl, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy and amino.
Additional examples include benzyl and methylenedioxy.
Examples of particular substituents on the moiety Y include fluoro, chloro, bromo, cyano, nitro, methyl, isopropyl, trifluoromethyl, hydroxy, methoxy, difluoromethoxy, trifluoromethoxy, methylthio, methylsulfmyl, methylsulfonyl, amino, methylamino, tert- butylamino, dimethylamino, phenylamino, acetylamino, methylsulfonylamino, formyl, acetyl, cyclopropylcarbonyl, azetidinylcarbonyl, pyrrolidinylcarbonyl, piperidinyl- carbonyl, piperazinylcarbonyl, morpholinylcarbonyl, carboxy, methoxycarbonyl, aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminosulfonyl, methylaminosulfonyl and dimethylaminosulfonyl. Additional examples include benzyl, ethoxy and methylenedioxy.
Typical examples of particular substituents on the moiety Y include fluoro, chloro, methyl, trifluoromethyl, methoxy, difluoromethoxy, trifluoromethoxy and amino.
Additional examples include bromo, benzyl, ethoxy and methylenedioxy.
Suitable values of Y include benzocyclobutenyl, phenyl, fluorophenyl (including 2-fluorophenyl, 3 -fluorophenyl and 4-fluorophenyl), chlorophenyl (including 2-chloro- phenyl, 3 -chlorophenyl and 4-chlorophenyl), difluorophenyl (including 2,6-difluoro- phenyl), (chloro)(fluoro)phenyl (including 5-chloro-2-fluorophenyl and 2-chloro-5- fluorophenyl), dichlorophenyl (including 2,5-dichlorophenyl and 2,6-dichlorophenyl), methylphenyl (including 4-methylphenyl), dimethylphenyl (including 2,5-dimethylphenyl and 2,6-dimethylphenyl), (trifluoromethyl)phenyl [including 2-(trifluoromethyl)phenyl], (chloro)(trifluoromethyl)phenyl [including 5-chloro-2-(trifluoromethyl)phenyl], (methyl)- (trifluoromethyl)phenyl [including 2-methyl-5-(trifluoromethyl)phenyl], bis(trifluoro- methyl)phenyl [including 2,5-bis(trifluoromethyl)phenyl], methoxyphenyl (including 2- methoxyphenyl), (difluoromethoxy )phenyl [including 2 -(difluoromethoxy )phenyl and 3- (dif uoromethoxy)phenyl], (difluoromethoxy)(fluoro)phenyl [including 2-(difluoro- methoxy)-5-fluorophenyl and 5-(difluoromethoxy)-2-fluorophenyl], (chloro)- (difluoromethoxy)phenyl [including 5-chloro-2-(difluoromethoxy)phenyl and 6-chloro-2- (difluoromethoxy)phenyl], (trifluoromethoxy)phenyl [including 2-(trifiuoromethoxy)- phenyl], (amino)(chloro)phenyl (including 5-amino-2-chlorophenyl), methylthiazolyl (including 2-methyl-l,3-thiazol-4-yl), (chloro)(methyl)thiazolyl (including 5-chloro-2- methyl-l,3-thiazol-4-yl) and pyridinyl (including pyridin-3-yl and pyridin-4-yl).
Additional values include (fluoro)(methoxy)phenyl, (difluoro)(difluoromethoxy)phenyl, (dichloro)(difluoromethoxy)phenyl, (bromo)(difluoromethoxy)phenyl, (difluoro- methoxy)(methyl)phenyl, (difluoromethoxy)(methoxy)phenyl, bis(difluoromethoxy)- phenyl, (difluoromethoxy)(methylenedioxyoxy)phenyl, (chloro)(trifluoromethoxy)phenyl, benzylpyrrolidinyl, (methyl)(trifluoromethyl)thieno[2,3-c]pyrazolyl, methylindazolyl, methylisoxazolyl, dimethylthiazolyl, (methyl)(trifluoromethyl)thiazolyl, (ethoxy)- (methyl)thiazolyl and chloroimidazo[2,l-¾]thiazolyl.
In a particular embodiment, Y represents 2-(difluoromethoxy)phenyl.
In one embodiment, Z represents hydrogen.
In another embodiment, Z is other than hydrogen.
In a selected embodiment, Z represents hydrogen; or Z represents Ci_6 alkyl, C3-7 cycloalkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents -Ί}-Ί} or -Z1-C(0)-Z2, either of which moieties may be optionally substituted by one or more substituents.
In a further embodiment, Z represents Ci_6 alkyl, C3-7 cycloalkyl, aryl, C3-7 heterocycloalkyl, C3_7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents -Zl-Z2 or -Z1-C(0)-Z2, either of which moieties may be optionally substituted by one or more substituents.
Typically, Z represents hydrogen, fluoro or trifluoromethyl; or Z represents methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-bvXy\, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, phenyl, tetrahydrofuranyl, pyrrolidinyl, indolinyl, tetrahydropyranyl, piperidinyl, 1,2,3,4-tetrahydroquinolinyl, morpholinyl, azocanyl, thiazolinyl, furyl, thienyl, pyrazolyl, 4,5,6,7-tetrahydroindazolyl, benzoxazolyl, isoxazolyl, thiazolyl, benzothiazolyl, imidazolyl, benzimidazolyl, [l,2,4]triazolo[l,5-a]- pyrimidinyl, tetrazolyl, pyridinyl, quinolinyl, isoquinolinyl, phthalazinyl, pyrimidinyl or pyrazinyl, any of which groups may be optionally substituted by one or more substituents; or Z represents -Zl-7? or -Z1-C(0)-Z2, either of which moieties may be optionally substituted by one or more substituents. Additionally, Z may represent dihydro- benzothienyl, dihydroisoindolinyl, 1,2,3,4-tetrahydroisoquinolinyl, pyridazinyl or triazinyl, any of which groups may be optionally substituted by one or more substituents.
The moiety Z1 represents a divalent radical derived from an aryl, C3_7 heterocyclo- alkyl or heteroaryl group, any of which groups may be optionally substituted by one or more substituents. Typically, the moiety Z1 represents a divalent radical derived from a phenyl, pyrrolidinyl, piperazinyl, pyrazolyl, thiazolyl, triazolyl, tetrazolyl or pyridinyl group, any of which groups may be optionally substituted by one or more substituents. Typical values of the moiety Z1 include the groups of formula (Za), (Zb), (Zc), (Zd), (Ze), (Zf), (Zg), (Zh) and (Zj):
Figure imgf000017_0001
(Zb) (Zc)
Figure imgf000017_0002
(Zg) (Zh) (Zj) wherein
the symbols # represent the points of attachment of the moiety Z1 to the remainder of the molecule; and
the asterisks (*) represent the site of attachment of optional substituents.
Additional values of the moiety Z1 include the group of formula (Zk):
Figure imgf000018_0001
* *
(Zk) wherein
# and * are as defined above.
Particular values of the moiety Z1 include the groups of formula (Za), (Zc), (Ze),
(Zf), (Zg), (Zh) and (Zj) as depicted above.
The moiety Z2 may represent aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents. In addition, Z2 may represent (C4_9)heterobicycloalkyl or
(C4_9)spiroheterocycloalkyl, either of which groups may be optionally substituted by one or more substituents.
Typically, Z2 represents phenyl, pyrrolidinyl, oxazolidinyl, imidazolidinyl, morpholinyl, imidazolinyl, thiazolyl, imidazolyl, tetrazolyl or pyridinyl, any of which groups may be optionally substituted by one or more substituents. Additionally, Z2 may represent azetidinyl, isothiazolidinyl, piperidinyl, piperazinyl, 6-azabicyclo[3.2.0]- heptanyl, 2-oxa-6-azaspiro[3.4]octanyl, triazolyl or pyrimidinyl, any of which groups may be optionally substituted by one or more substituents.
Examples of optional substituents which may be present on the moiety Z, Z1 or Z2 include one, two or three substituents independently selected from halogen, cyano, nitro, Ci_6 alkyl, trifluoromethyl, oxo, hydroxy, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, difluoro- methoxy, trifluoromethoxy, Ci_3 alkylenedioxy, Ci_6 alkylthio, Ci_6 alkylsulfmyl, Ci_6 alkylsulfonyl, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, di(Ci_6)alkylamino(Ci_6)alkyl, C2-6 alkylcarbonylamino, Ci_6 alkylsulfonylamino, formyl, C2-6 alkylcarbonyl, carboxy, C2-6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylamino- carbonyl, aminosulfonyl, Ci_6 alkylaminosulfonyl, di(Ci_6)alkylaminosulfonyl, aminocarbonylamino and hydrazinocarbonyl. Additional examples include thioxo, N- [(C 1 _6)-alkyl] -N-[(C 1 _6)alkylcarbonyl] amino, N-[(C 1 _6)alkyl] -N-[(C 1 _6)alkylsulfonyl] amino, cyano(Ci_6)alkylaminocarbonyl and (C3_7)cycloalkylureido.
Typical examples of optional substituents on the moiety Z, Z1 or Z2 include halogen, cyano, nitro, Ci_6 alkyl, trifluoromethyl, oxo, hydroxy, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_3 alkylenedioxy, Ci_6 alkylsulfonyl, amino, di(Ci_6)alkylamino, di(Ci_6)alkylamino(Ci_6)alkyl, C2_6 alkylcarbonylamino, Ci_6 alkyl- sulfonylamino, formyl, carboxy, C2_6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkylamino- carbonyl, di(Ci_6)alkylaminocarbonyl, aminocarbonylamino and hydrazinocarbonyl.
Additional examples include thioxo, Ci_6 alkylthio, N-[(Ci_6)alkyl]-N-[(Ci_6)alkyl- carbonyl] amino, N- [(C i _6)-alkyl] -N-[(C i _6)alkylsulfonyl] amino, cyano(C i _6)alkylamino- carbonyl, aminosulfonyl and (C3_7)cycloalkylureido.
Examples of particular substituents on the moiety Z, Z1 or Z2 include fluoro, chloro, bromo, cyano, nitro, methyl, ethyl, isopropyl, trifluoromethyl, oxo, hydroxy, hydroxymethyl, methoxy, difluoromethoxy, trifluoromethoxy, methylenedioxy, methylthio, methylsulfmyl, methylsulfonyl, amino, methylamino, tert-butylamino, dimethylamino, dimethylaminomethyl, dimethylaminoethyl, acetylamino, methylsulfonyl- amino, formyl, acetyl, carboxy, methoxycarbonyl, tert-butoxycarbonyl, aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminosulfonyl, methylaminosulfonyl, dimethylaminosulfonyl, aminocarbonylamino and hydrazinocarbonyl. Additional examples include thioxo, ethoxy, N-acetyl-N-methylamino, N-methyl-N-(methylsulfonyl)- amino, cyanomethylaminocarbonyl and cyclopropylureido.
Typical examples of particular substituents on the moiety Z, Z1 or Z2 include fluoro, chloro, bromo, cyano, nitro, methyl, ethyl, trifluoromethyl, oxo, hydroxy, hydroxymethyl, methoxy, difluoromethoxy, trifluoromethoxy, methylenedioxy, methylsulfonyl, amino, dimethylamino, dimethylaminomethyl, dimethylaminoethyl, acetylamino, methylsulfonylamino, formyl, carboxy, methoxycarbonyl, tert- butoxycarbonyl, aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminocarbonylamino and hydrazinocarbonyl. Additional examples include thioxo, methylthio, ethoxy, N-acetyl-N-methylamino, N-methyl-N-(methylsulfonyl)amino, cyanomethylaminocarbonyl, aminosulfonyl and cyclopropylureido.
Typical values of Z2 include phenyl, hydroxyphenyl, oxopyrrolidinyl, dioxo- pyrrolidinyl, (hydroxy)(oxo)pyrrolidinyl, (amino)(oxo)pyrrolidinyl, (oxo)oxazolidinyl, oxoimidazolidinyl, morpholinyl, imidazolinyl, methylthiazolyl, formylthiazolyl, imidazolyl, tetrazolyl and pyridinyl. Additionally, Z2 may represent oxoazetidinyl, (methyl)(oxo)pyrrolidinyl, (hydroxymethyl)(oxo)pyrrolidinyl, dioxoisothiazolidinyl, oxopiperidinyl, (methyl)(oxo)piperazinyl, oxomorpholinyl, oxo-6-azabicyclo[3.2.0]- heptanyl, oxo-2-oxa-6-azaspiro[3.4]octanyl, ethoxytriazolyl or pyrimidinyl. Selected values of Z2 include oxopyrrolidinyl and (oxo)oxazolidinyl. In one embodiment, Z2 represents oxopyrrolidinyl. In another embodiment, Z2 represents (oxo)oxazolidinyl.
Typical values of Z include hydrogen, fluoro, trifluoromethyl, methyl, ethyl, n- propyl, isopropyl, isobutyl, tert- vXy\, cyclopropyl, cyclopentyl, cyclohexyl, oxo- cyclohexyl, phenyl, bromophenyl, cyanophenyl, nitrophenyl, methoxyphenyl, difluoro- methoxyphenyl, trifluoromethoxyphenyl, methylenedioxyphenyl, methylsulfonylphenyl, dimethylaminophenyl, acetylaminophenyl, methylsulfonylaminophenyl, carboxyphenyl, aminocarbonylphenyl, methylaminocarbonylphenyl, dimethylaminocarbonylphenyl, aminocarbonylaminophenyl, tetrahydrofuranyl, oxopyrrolidinyl, dimethylamino- pyrrolidinyl, tert-butoxycarbonylpyrrolidinyl, indolinyl, tetrahydropyranyl, piperidinyl, ethylpiperidinyl, tert-butoxycarbonylpiperidinyl, aminocarbonylpiperidinyl, 2-oxo-3,4- dihydroquinolinyl, morpholinyl, azocanyl, oxothiazolinyl, furyl, hydroxymethylfuryl, thienyl, methylpyrazolyl, dimethylpyrazolyl, 4,5,6,7-tetrahydroindazolyl, benzoxazolyl, methylisoxazolyl, dimethylisoxazolyl, methylthiazolyl, aminothiazolyl, benzothiazolyl, methylbenzothiazolyl, aminobenzothiazolyl, imidazolyl, methylimidazolyl, methyl- benzimidazolyl, dimethyl [ 1 ,2,4]triazolo[ 1 ,5-a]pyrimidinyl, dimethylaminoethyltetrazolyl, pyridinyl, fluoropyridinyl, chloropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)- (methyl)pyridinyl, trifluoromethylpyridinyl, oxopyridinyl, methoxypyridinyl, dimethyl- aminomethylpyridinyl, acetylaminopyridinyl, carboxypyridinyl, methoxycarbonyl- pyridinyl, aminocarbonylpyridinyl, (aminocarbonyl)(fluoro)pyridinyl, methylamino- carbonylpyridinyl, dimethylaminocarbonylpyridinyl, hydrazinocarbonylpyridinyl, quinolinyl, isoquinolinyl, (methyl)(oxo)phthalazinyl, pyrimidinyl, pyrazinyl,
oxopyrrolidinylphenyl, dioxopyrrolidinylphenyl, (hydroxy)(oxo)pyrrolidinylphenyl, (amino)(oxo)pyrrolidinylphenyl, (oxo)oxazolidinylphenyl, oxoimidazolidinylphenyl, imidazolinylphenyl, methylthiazolylphenyl, formylthiazolylphenyl, imidazolylphenyl, tetrazolylphenyl, phenylpyrrolidinyl, hydroxyphenylpiperazinyl, (methyl)(phenyl)- pyrazolyl, oxoimidazolidinylthiazolyl, hydroxyphenyltriazolyl, morpholinyltetrazolyl, oxopyrrolidinylpyridinyl, (oxo)oxazolidinylpyridinyl, oxoimidazolidinylpyridinyl, pyridinylthiazolyl, pyridinyltetrazolyl and morpholinylcarbonylphenyl. Additional values include difluoromethyl, aminocarbonylaminomethyl, difluorophenyl, chlorophenyl, methylphenyl, dimethylphenyl, dimethoxyphenyl, (methylthio)phenyl, methylsulfmyl- phenyl, (bromo)(methylsulfonyl)phenyl, (methyl)(methylsulfonyl)phenyl, cyanomethyl- aminocarbonylphenyl, trioxodihydrobenzothienyl, pyrrolidinyl, methylpyrrolidinyl, oxodihydroisoindolinyl, oxopiperidinyl, 1,2,3,4-tetrahydroisoquinolinyl, aminosulfonyl- pyrazolyl, cyclopropylureidothiazolyl, [l,2,4]triazolo[l,5-a]pyrimidinyl,
hydroxypyridinyl, dimethylaminopyridinyl, N-acetyl-N-methylaminopyridinyl, N-methyl- N-(methylsulfonyl)aminopyridinyl, pyridazinyl, oxopyrimidinyl, (amino)(dimethyl)- pyrimidinyl, (oxo)(thioxo)triazinyl, pyridinylpiperazinyl, pyrimidinylpiperazinyl, oxopyrrolidinylthiazolyl, oxoazetidinylpyridinyl, (methyl)(oxo)pyrrolidinylpyridinyl, (hydroxy)(oxo)pyrrolidinylpyridinyl, (hydroxymethyl)(oxo)pyrrolidinylpyridinyl, (amino)(oxo)pyrrolidinylpyridinyl, dioxoisothiazolidinylpyridinyl, oxopiperidinyl- pyridinyl, (methyl)(oxo)piperazinylpyridinyl, oxomorpholinylpyridinyl, oxo-6- azabicyclo[3.2.0]heptanylpyridinyl, oxo-2-oxa-6-azaspiro[3.4]octanylpyridinyl and ethoxytriazolylpyridinyl .
Particular values of Z include hydrogen, methyl, methylsulfonylphenyl, pyridinyl, oxopyrrolidinylphenyl, (hydroxy)(oxo)pyrrolidinylphenyl and (oxo)oxazolidinylphenyl. In a first embodiment, Z represents hydrogen. In a second embodiment, Z represents methyl. In a third embodiment, Z represents methylsulfonylphenyl. In one aspect of that embodiment, Z represents 3-(methylsulfonyl)phenyl. In a fourth embodiment, Z represents pyridinyl. In one aspect of that embodiment, Z represents pyridin-4-yl. In a fifth embodiment, Z represents oxopyrrolidinylphenyl. In one aspect of that embodiment, Z represents 3-(2-oxopyrrolidin-l-yl)phenyl. In a sixth embodiment, Z represents
(hydroxy)(oxo)pyrrolidinylphenyl. In one aspect of that embodiment, Z represents 3-(3- hydroxy-2-oxopyrrolidin-l-yl)phenyl. In another aspect of that embodiment, Z represents 3-(4-hydroxy-2-oxopyrrolidin-l-yl)phenyl. In a seventh embodiment, Z represents (oxo)oxazolidinylphenyl. In one aspect of that embodiment, Z represents 3-(2-oxo- oxazolidinyl-3-yl)phenyl.
In general, R1, R2 and R3 independently represent hydrogen, halogen, cyano, nitro, hydroxy, trifiuoromethyl, trifluoromethoxy, -ORa, -SRa, -SORa, -S02Ra, -NRbRc,
-NRcCORd, -NRcC02Rd, -NHCONRbRc, -NRcS02Re, -N(S02Re)2, -NHS02NRbRc, -CORd, -C02Rd, -CONRbRc, -CON(ORa)Rb or -S02NRbRc; or Ci_6 alkyl, C2_6 alkenyl, C2_6 alkynyl, C3-7 cycloalkyl, C4-7 cycloalkenyl, C3-7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3-7 heterocycloalkyl, C3-7 heterocycloalkyl(Ci_6)alkyl, C3-7
heterocycloalkenyl, C4_g heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl,
(C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl(C3_7)heterocycloalkyl-, (C3_7)cycloalkyl-heteroaryl-, (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, (C4_7)cycloalkenyl- heteroaryl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl- heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
Generally, R1, R2 and R3 independently represent hydrogen, halogen, cyano, nitro, hydroxy, trifluoromethyl, trifluoromethoxy, -ORa, -SRa, -SORa, -S02Ra, -NRbRc, -NRcCORd, -NRcC02Rd, -NHCONRbRc, -NRcS02Re, -N(S02Re)2, -NHS02NRbRc, -CORd, -C02Rd, -CONRbRc, -CON(ORa)Rb or -S02NRbRc; or Ci_6 alkyl, C2_6 alkenyl, C2_6 alkynyl, C3_7 cycloalkyl, C4_7 cycloalkenyl, C3_7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, C3_7
heterocycloalkenyl, C4_9 heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl,
(C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl(C3_7)heterocycloalkyl-,
(C4_7)cycloalkenyl-heteroaryl-, (C3_7)heterocycloalkyl -heteroaryl-, (C3_7)heterocycloalkyl- (Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl- heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
Typically, R1, R2 and R3 independently represent hydrogen, halogen, cyano or -C02Rd; or Ci_6 alkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl(C3_7)heterocycloalkyl-,
(C4_7)cycloalkenyl-heteroaryl-, (C3_7)heterocycloalkyl -heteroaryl-,
(C3-7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents. Additionally, R2 and R3 may independently represent (C3_7)cycloalkyl-heteroaryl- or
(C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R1, R2 and R3 may independently represent trifluoromethyl, -ORa, -S02Ra, -OS02Ra or -CONRbRc; or heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C4_9)bicycloalkyl-heteroaryl- or (C3_7)heterocycloalkyl- heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents.
Suitably, R1, R2 and R3 independently represent hydrogen, halogen, cyano or -C02Rd; or Ci_6 alkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl(C3_7)heterocycloalkyl-,
(C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally
substituted by one or more substituents. Additionally, R1, R2 and R3 may independently represent (C3_7)cycloalkyl-heteroaryl- or (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R1, R2 and R3 may independently represent trifluoromethyl, -ORa, -S02Ra, -OS02Ra or -CONRbRc; or heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C4-7)cycloalkenyl- heteroaryl-, (C4_9)-bicycloalkyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or (C3_7)heterocycloalkyl-heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents.
Examples of optional substituents which may be present on R1, R2 or R3 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)- alkyl, nitro, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_3 alkylenedioxy, Ci_6 alkoxy(Ci_6)- alkyl, Ci_6 alkylthio, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, (Ci_6)alkoxy(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy- (Ci_6)alkyl]amino, C2-6 alkylcarbonylamino, C2-6 alkoxycarbonylamino, Ci_6 alkylamino- carbonylamino, Ci_6 alkylsulphonylamino, formyl, C2_6 alkylcarbonyl, carboxy, carboxy- (Ci_6)alkyl, C2_6 alkoxycarbonyl, C2-6 alkoxycarbonyl(Ci_6)alkyl, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl and di(Ci_6)alkylamino- sulphonyl. Additional examples include hydroxy(Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety Ω, -(Ci_6)alkyl-Q, and aminocarbonyl(Ci_6)alkyl. Additional examples include difluoromethyl, difluoroethyl, Ci_6 alkylsulphinyl, hydroxy(Ci_6)alkylamino,
[(C i _6)alkoxy] (hydroxy)(C i _6)alkylamino, [(C i _6)alkylthio] (hydroxy)(C i _6)alkylamino, di(C i _6)alkylamino(C i _6)alkylamino, N- [di(C i _6)alkylamino(C i _6)alkyl] -N- [hydroxy(C i _6)- alkyl] amino, hydroxy(C i _6)alkyl(C3-7)cycloalkylamino, (hydroxy) [(C3_7)cycloalkyl(C i _6)- alkyljamino, (C3_7)heterocycloalkyl(Ci_6)alkylamino, oxo(C3_7)heterocycloalkyl(Ci_6)alkyl- amino, (Ci_6)alkylheteroarylamino, heteroaryl(Ci_6)alkylamino, (Ci_6)alkylheteroaryl(Ci_6)- alkylamino, N-[(Ci_6)alkyl]-N-[(C2-6)alkylcarbonyl]amino, C3_6 alkenylcarbonylamino, bis[(C3-6)alkenylcarbonyl]amino, N-[(Ci_6)alkyl]-N-[(C3-7)cycloalkylcarbonyl]amino, N- [carboxy(Ci_6)alkyl]-N-[(Ci_6)alkyl]amino, C2_6 alkoxycarbonyl(Ci_6)alkylamino, N-[(Ci_6)- alkyl]-N-[(Ci_6)alkylsulphonyl]amino, (C3_7)cycloalkylcarbonyl, phenylcarbonyl and hydroxy(Ci_6)alkylaminocarbonyl.
By the expression "carboxylic acid isostere or prodrug moiety" is meant any functional group, structurally distinct from a carboxylic acid moiety, that will be recognised by a biological system as being similar to, and thus capable of mimicking, a carboxylic acid moiety, or will be readily convertible by a biological system in vivo into a carboxylic acid moiety. A synopsis of some common carboxylic acid isosteres is presented by N.A. Meanwell in J. Med. Chem., 2011, 54, 2529-2591 (cf. in particular Figures 25 and 26). Typical examples of suitable carboxylic acid isostere or prodrug moieties represented by Ω include the functional groups of formula (i) to (xli):
Figure imgf000024_0001
(i) (iii) (iv)
Figure imgf000024_0002
(v) (vi) (vii) (viii)
Figure imgf000024_0003
(xiv) (xv) (xvi) (xvii)
Figure imgf000025_0001
(xviii) (xix) (xx) (xxi)
Figure imgf000025_0002
(xxii) (xxiii) (xxiv) (xxv)
Figure imgf000025_0003
(xxvi) xxvii) (xxviii) (xxix)
(xxx) (xxxi) (xxxii)
(xxxvi)
Figure imgf000025_0004
(xxxviii) (xl) wherein
the asterisk (*) represents the site of attachment to the remainder of the molecule; n is zero, 1 or 2; X represents oxygen or sulphur;
Rf represents hydrogen, Ci_6 alkyl or -CH2CH(OH)CH2OH;
Rg represents Ci_6 alkyl, trifluoromethyl, -CH2CH2F, -CH2CHF2, -CH2CF3 or -CF2CF3;
Rh represents hydrogen, cyano or -C02Rd, in which Rd is as defined above; and
RJ represents hydrogen or halogen.
In one embodiment, n is zero. In another embodiment, n is 1. In a further embodiment, n is 2.
In one embodiment, X represents oxygen. In another embodiment, X represents sulphur.
In one embodiment, R f represents hydrogen. In another embodiment, R f represents Ci_6 alkyl, especially methyl. In a further embodiment, R is -CH2CH(OH)CH2OH.
In one embodiment, Rg represents Ci_6 alkyl, especially methyl. In another embodiment, Rg represents trifluoromethyl, -CH2CH2F, -CH2CHF2, -CH2CF3 or -CF2CF3. In a first aspect of that embodiment, Rg represents trifluoromethyl. In a second aspect of that embodiment, Rg represents -CH2CH2F. In a third aspect of that embodiment, Rg represents -CH2CHF2. In a fourth aspect of that embodiment, Rg represents -CH2CF3. In a fifth aspect of that embodiment, Rg represents -CF2CF3.
In one embodiment, Rh is hydrogen. In another embodiment, Rh represents cyano. In a further embodiment, Rh represents -C02Rd, especially methoxycarbonyl.
In one embodiment, RJ represents hydrogen. In another embodiment, RJ represents halogen, especially chloro.
In a selected embodiment, Ω represents tetrazolyl, especially a C-linked tetrazolyl moiety of formula (xxiv) or (xxv) as depicted above, in particular a group of formula (xxiv) as depicted above.
In another embodiment, Ω represents Ci_6 alkylsulphonylaminocarbonyl, i.e. a moiety of formula (iii) as depicted above wherein Rg represents Ci_6 alkyl.
In another embodiment, Ω represents Ci_6 alkylaminosulphonyl, i.e. a moiety of formula (x) as depicted above wherein Rg represents Ci_6 alkyl.
In a further embodiment, Ω represents (Ci_6)alkylcarbonylaminosulphonyl, i.e. a moiety of formula (v) as depicted above wherein Rg represents Ci_6 alkyl.
Suitable examples of optional substituents which may be present on R1, R2 or R3 include one, two or three substituents independently selected from halogen, cyano, cyano- (Ci_6)alkyl, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, hydroxy(Ci_6)- alkyl, Ci_6 alkoxy, trifluoroethoxy, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(Ci_6)alkylamino, (Ci_6)alkoxy(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy- (Ci_6)alkyl]amino, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, aminocarbonyl and aminocarbonyl(Ci_6)alkyl. Additional examples include difluoromethyl, difluoroethyl, Ci_6 alkoxy(Ci_6)alkyl, Ci_6 alkylsulphinyl, Ci_6 alkylamino, hydroxy(Ci_6)alkylamino, [(Ci_6)alkoxy](hydroxy)(Ci_6)alkylamino,
[(C i _6)alkylthio] (hy droxy)(C i _6)alkylamino, di(C i _6)alkylamino(C i _6)alkylamino, N- [di(C i _6)alkylamino(C i _6)alkyl] -N- [hydroxy(C i _6)alkyl]amino, hydroxy(C i _6)alkyl(C3_7)- cycloalkylamino, (hydroxy)[(C3_7)cycloalkyl(Ci_6)alkyl]amino, (C3_7)heterocycloalkyl- (Ci_6)alkylamino, oxo(C3_7)heterocycloalkyl(Ci_6)alkylamino, (Ci_6)alkylheteroarylamino, heteroaryl(Ci_6)alkylamino, (Ci_6)alkylheteroaryl(Ci_6)alkylamino, C2_6 alkylcarbonyl- amino, N-[(Ci_6)alkyl]-N-[(C2_6)alkylcarbonyl]amino, C3_6 alkenylcarbonylamino, bis[(C3_6)alkenylcarbonyl]amino, N-[(Ci_6)alkyl]-N-[(C3_7)cycloalkylcarbonyl]amino, N- [carboxy(Ci_6)alkyl]-N-[(Ci_6)alkyl]amino, C2_6 alkoxy carbonylamino, C2_6 alkoxy- carbonyl(C i _6)alkylamino, N-[(C i _6)alkyl] -N- [(C i _6)alkylsulphonyl]amino , formyl,
(C3_7)cycloalkylcarbonyl, phenylcarbonyl, Ci_6 alkylaminocarbonyl, hydroxy(Ci_6)alkyl- aminocarbonyl, di(Ci_6)alkylaminocarbonyl and aminosulphonyl.
Typical examples of optional substituents which may be present on R1, R2 or R3 include one, two or three substituents independently selected from halogen, cyano, cyano- (Ci_6)alkyl, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, Ci_6 alkoxy, trifluoroethoxy, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(Ci_6)- alkylamino, (Ci_6)alkoxy(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy(Ci_6)alkyl]amino, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6
alkoxycarbonyl(Ci_6)alkyl and aminocarbonyl.
Examples of particular substituents on R1, R2 or R3 include fluoro, chloro, bromo, cyano, cyanoethyl, nitro, methyl, ethyl, tert-butyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, methylenedioxy, ethylenedioxy, methoxymethyl, methylthio, methylsulphonyl, methyl- sulphonylethyl, oxo, amino, methylamino, dimethylamino, methoxy ethylamino, N- (hydroxyethyl)-N-(methyl)amino, acetylamino, methoxycarbonylamino, ethoxycarbonyl- amino, ethylaminocarbonylamino, butylaminocarbonylamino, methylsulphonylamino, formyl, acetyl, carboxy, carboxymethyl, carboxyethyl, methoxycarbonyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl, aminocarbonyl, methyl- aminocarbonyl, dimethylaminocarbonyl, aminosulphonyl, methylaminosulphonyl and dimethylaminosulphonyl. Additional examples include hydroxyethyl, hydroxyisopropyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoro- methyl, difluoroethyl, hydroxymethyl, methoxyethyl, methylsulphinyl, ethylamino, hydroxyethylamino, hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)- (methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethyl- amino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)- amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)- (hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyloxadiazolylammo, methylthiadiazolylammo, thiazolylmethylamino, thiazolylethylamino, pyrimidinylmethylamino, methylpyrazolylmethylamino, N-acetyl-N-methylamino, N- isopropylcarbonyl-N-methylamino, ethenylcarbonylamino, bis(ethenylcarbonyl)amino, N- cyclopropylcarbonyl-N-methylamino, N-(carboxymethyl)-N-methylamino, N-(carboxy- ethyl)-N-methylamino, tert-butoxycarbonylamino, methoxycarbonyl ethylamino, N- methyl-N-(methylsulphonyl)amino, isopropylcarbonyl, cyclobutylcarbonyl, phenyl - carbonyl and hydroxyethylaminocarbonyl.
Suitable examples of particular substituents on R1, R2 or R3 include fluoro, chloro, cyano, cyanoethyl, methyl, ethyl, trifluoromethyl, trifiuoroethyl, ethenyl, hydroxy, hydroxyethyl, hydroxyisopropyl, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxyethylamino, N-(hydroxy- ethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl, aminocarbonyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoromethyl, difluoroethyl, hydroxymethyl, methoxymethyl, methoxyethyl, methylsulphinyl, ethylamino, hydroxyethylamino, hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)(methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethyl- aminoethylamino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N- (hydroxyethyl)amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)(hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyloxadiazolylammo, methylthiadiazolylammo, thiazolylmethylamino, thiazolylethylamino, pyrimidinylmethylamino, methylpyrazolylmethylamino, acetylamino, N- acetyl-N-methylamino, N-isopropylcarbonyl-N-methylamino, ethenylcarbonylamino, bis(ethenylcarbonyl)amino, N-cyclopropylcarbonyl-N-methylamino, N-(carboxymethyl)- N-methylamino, N-(carboxyethyl)-N-methylamino, tert-butoxycarbonylamino, methoxy- carbonylethylamino, N-methyl-N-(methylsulphonyl)amino, formyl, isopropylcarbonyl, cyclobutylcarbonyl, phenylcarbonyl, methoxycarbonyl, methylaminocarbonyl, hydroxyethylaminocarbonyl, dimethylaminocarbonyl and aminosulphonyl.
Typical examples of particular substituents on R1, R2 or R3 include fluoro, chloro, cyano, cyanoethyl, methyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonyl- methyl, ethoxycarbonylethyl and aminocarbonyl.
In a particular embodiment, R1 is attached at the 6-position of the benzimidazole nucleus in the compounds of formula (I) above.
Typically, R1 represents hydrogen, halogen, cyano or -C02Rd; or Ci_6 alkyl, aryl, C3-7 heterocycloalkyl, C3-7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl- (Ci_6)alkyl-aryl-, heteroaryl(C3_7)heterocycloalkyl-, (C4-7)cycloalkenyl-heteroaryl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3-7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-,
(C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl -heteroaryl- or
(C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents. Additionally, R1 may represent (C3_7)cycloalkyl- heteroaryl- or (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R1 may represent trifluoromethyl, -ORa, -S02Ra, -OS02Ra or -CONRbRc; or heteroaryl(Ci_6)alkyl,
(C3_7)heterocycloalkyl-aryl-, (C4_9)bicycloalkyl-heteroaryl- or (C3_7)heterocycloalkyl- heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents.
Suitably, R1 represents halogen, cyano or -C02Rd; or Ci_6 alkyl, aryl, C3-7 heterocycloalkyl, C3_7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl- aryl-, heteroaryl(C3_7)heterocycloalkyl-, (C4_7)cycloalkenyl -heteroaryl-,
(C3_7)heterocycloalkyl-heteroaryl-, (C3-7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-,
(C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl -heteroaryl- or
(C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents. Additionally, R1 may represent (C3_7)cycloalkyl- heteroaryl- or (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R1 may represent trifluoromethyl, -ORa, -S02Ra, -OS02Ra or -CONRbRc; or heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C4_9)bicycloalkyl-heteroaryl- or (C3_7)heterocycloalkyl- heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents.
Generally, R1 represents halogen or cyano; or Ci_6 alkyl, aryl, C3-7
heterocycloalkyl, C3_7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl- aryl-, heteroaryl(C3_7)heterocycloalkyl-, (C4_7)cycloalkenyl -heteroaryl-,
(C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-,
(C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl -heteroaryl- or
(C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents. Additionally, R1 may represent (C3_7)cycloalkyl- heteroaryl- or (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R1 may represent trifluoromethyl, -ORa, -S02Ra, -OS02Ra or -CONRbRc; or heteroaryl(Ci_6)alkyl,
(C3_7)heterocycloalkyl-aryl-, (C4_9)bicycloalkyl-heteroaryl- or (C3_7)heterocycloalkyl- heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents.
More generally, R1 represents halogen or cyano; or Ci_6 alkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl- aryl-, heteroaryl(C3_7)heterocycloalkyl-, (C3_7)heterocycloalkyl-heteroaryl-,
(C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
Additionally, R1 may represent (C3_7)cycloalkyl -heteroaryl- or (C3_7)cycloalkyl(Ci_6)alkyl- heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R1 may represent trifluoromethyl, -ORa, -S02Ra, -OS02Ra or -CONRbRc; or heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C4_7)cycloalkenyl- heteroaryl-, (C4_9)-bicycloalkyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or (C3-7)heterocycloalkyl-heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents.
In a first embodiment, R1 represents hydrogen. In a second embodiment, R1 represents halogen. In one aspect of that
embodiment, R1 represents bromo. In another aspect of that embodiment, R1 represents chloro.
In a third embodiment, R1 represents cyano.
In a fourth embodiment, R1 represents -C02Rd.
In a fifth embodiment, R1 represents optionally substituted Ci_6 alkyl. In one aspect of that embodiment, R1 represents optionally substituted methyl. In another aspect of that embodiment, R1 represents optionally substituted ethyl.
In a sixth embodiment, R1 represents optionally substituted aryl. In one aspect of that embodiment, R1 represents optionally substituted phenyl.
In a seventh embodiment, R1 represents optionally substituted C3-7
heterocycloalkyl.
In an eighth embodiment, R1 represents optionally substituted C3_7
heterocycloalkenyl.
In a ninth embodiment, R1 represents optionally substituted heteroaryl. In selected aspects of that embodiment, R1 represents benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl or pyrazinyl, any of which groups may be optionally substituted by one or more substituents. In a further aspect, R1 represents optionally substituted thiazolyl.
In a tenth embodiment, R1 represents optionally substituted (C3-7)- heterocycloalkyl(Ci_6)alkyl-aryl-. In a first aspect of that embodiment, R1 represents optionally substituted pyrrolidinylmethylphenyl-. In a second aspect of that embodiment, R1 represents optionally substituted piperazinylmethylphenyl-. In a third aspect of that embodiment, R1 represents optionally substituted morpholinylmethylphenyl-.
In an eleventh embodiment, R1 represents optionally substituted heteroaryl(C3_7)- heterocycloalkyl-. In one aspect of that embodiment, R1 represents optionally substituted pyridinylpiperazinyl- .
In a twelfth embodiment, R1 represents optionally substituted (C3_7)cycloalkyl- heteroaryl-. In a first aspect of that embodiment, R1 represents optionally substituted cyclopropylpyrimidinyl-. In a second aspect of that embodiment, R1 represents optionally substituted cyclobutylpyrimidinyl-. In a third aspect of that embodiment, R1 represents optionally substituted cyclopentylpyrimidinyl-. In a fourth aspect of that embodiment, R1 represents optionally substituted cyclohexylpyrimidinyl-. In a thirteenth embodiment, R1 represents optionally substituted (C3_7)cycloalkyl- (Ci_6)alkyl-heteroaryl-. In one aspect of that embodiment, R1 represents optionally substituted cyclopropylmethylpyrimidinyl- .
In a fourteenth embodiment, R1 represents optionally substituted (C4-7)- cycloalkenyl-heteroaryl-.
In a fifteenth embodiment, R1 represents optionally substituted (C4_9)bicycloalkyl- heteroaryl-. In one aspect of that embodiment, R1 represents optionally substituted bicyclo[3.1.0]hexanylpyrimidinyl-.
In a sixteenth embodiment, R1 represents optionally substituted (C3-7)- heterocycloalkyl-heteroaryl-. In a first aspect of that embodiment, R1 represents optionally substituted azetidinylpyridinyl-. In a second aspect of that embodiment, R1 represents optionally substituted pyrrolidinylpyridinyl-. In a third aspect of that embodiment, R1 represents optionally substituted isothiazolidinylpyridinyl-. In a fourth aspect of that embodiment, R1 represents optionally substituted imidazolidinylpyridinyl-. In a fifth aspect of that embodiment, R1 represents optionally substituted piperidinyl- pyridinyl-. In a sixth aspect of that embodiment, R1 represents optionally substituted piperazinylpyridinyl-. In a seventh aspect of that embodiment, R1 represents optionally substituted morpholinylpyridinyl-. In an eighth aspect of that embodiment, R1 represents optionally substituted thiomorpholinylpyridinyl-. In a ninth aspect of that embodiment, R1 represents optionally substituted diazepanylpyridinyl-. In a tenth aspect of that embodiment, R1 represents optionally substituted oxetanylpyrimidinyl-. In an eleventh aspect of that embodiment, R1 represents optionally substituted azetidinylpyrimidinyl-. In a twelfth aspect of that embodiment, R1 represents optionally substituted
tetrahydrofuranylpyrimidinyl-. In a thirteenth aspect of that embodiment, R1 represents optionally substituted pyrrolidinylpyrimidinyl-. In a fourteenth aspect of that
embodiment, R1 represents optionally substituted isothiazolidinylpyrimidinyl-. In a fifteenth aspect of that embodiment, R1 represents optionally substituted
tetrahydropyranylpyrimidinyl-. In a sixteenth aspect of that embodiment, R1 represents optionally substituted piperidinylpyrimidinyl-. In a seventeenth aspect of that embodiment, R1 represents optionally substituted piperazinylpyrimidinyl-. In an eighteenth aspect of that embodiment, R1 represents optionally substituted morpholinyl- pyrimidinyl-. In a nineteenth aspect of that embodiment, R1 represents optionally substituted thiomorpholinylpyrimidinyl- . In a seventeenth embodiment, R1 represents optionally substituted (C3-7)- heterocycloalkyl(Ci_6)alkyl-heteroaryl-. In a first aspect of that embodiment, R1 represents optionally substituted morpholinylmethylthienyl-. In a second aspect of that embodiment, R1 represents optionally substituted morpholinylethylpyrazolyl-. In a third aspect of that embodiment, R1 represents optionally substituted azetidinylmethyl- pyridinyl-. In a fourth aspect of that embodiment, R1 represents optionally substituted piperazinylmethylpyridinyl-. In a fifth aspect of that embodiment, R1 represents optionally substituted morpholinylmethylpyridinyl-. In a sixth aspect of that embodiment, R1 represents optionally substituted thiomorpholinylmethylpyridinyl-. In a seventh aspect of that embodiment, R1 represents optionally substituted morpholinylmethylpyrimidinyl-.
In an eighteenth embodiment, R1 represents optionally substituted (C3-7)- heterocycloalkenyl-heteroaryl-.
In a nineteenth embodiment, R1 represents optionally substituted (C4-c>)- heterobicycloalkyl-heteroaryl- .
In a twentieth embodiment, R1 represents optionally substituted (C4-c>)- spiroheterocycloalkyl-heteroaryl-.
In a twenty-first embodiment, R1 represents -ORa.
In a twenty-second embodiment, R1 represents -S02Ra.
In a twenty-third embodiment, R1 represents -OS02Ra.
In a twenty-fourth embodiment, R1 represents -CONRbRc.
In a twenty-fifth embodiment, R1 represents trifluoromethyl.
In a twenty-sixth embodiment, R1 represents optionally substituted heteroaryl- (Ci_6)alkyl. In a first aspect of that embodiment, R1 represents optionally substituted imidazolylmethyl. In a second aspect of that embodiment, R1 represents optionally substituted triazolylmethyl. In a third aspect of that embodiment, R1 represents optionally substituted pyridinylmethyl.
In a twenty-seventh embodiment, R1 represents optionally substituted (C3-7)- heterocycloalkyl-aryl-. In one aspect of that embodiment, R1 represents optionally substituted piperazinylphenyl.
In a twenty-eighth embodiment, R1 represents optionally substituted (C3-7)- heterocycloalkyl-heteroaryl(Ci_6)alkyl-. In one aspect of that embodiment, R1 represents optionally substituted morpholinylpyridinylmethyl. Appropriately, R1 represents hydrogen, bromo, cyano or -C02Rd; or ethyl, phenyl, piperidinyl, piperazinyl, morpholinyl, 1,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl, pyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinyl- piperazinyl, cyclobutylpyrimidinyl, cyclopropylmethylpyrimidinyl, pyrrolidinylpyridinyl, piperidinylpyridinyl, piperazinylpyridinyl, morpholinylpyridinyl, thiomorpholinyl- pyridinyl, diazepanylpyridinyl, pyrrolidinylpyrimidinyl, tetrahydropyranylpyrimidinyl, piperidinylpyrimidinyl, piperazinylpyrimidinyl, morpholinylpyrimidinyl,
thiomorpholinylpyrimidinyl, morpholinylmethylthienyl, morpholinylethylpyrazolyl, 2- oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6-azaspiro[3.4]octanylpyrimidinyl, 2-oxa- 6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7-azaspiro[3.5]nonanylpyrimidinyl, any of which groups may be optionally substituted by one or more substituents. Additionally, R1 may represent chloro, trifluoromethyl, -ORa, -S02Ra, -OS02Ra or -CONRbRc; or methyl, dihydrothieno[3,4-£][l,4]dioxinyl, dihydropyrrolo[3,4-£]pyridinyl, imidazolylmethyl, triazolylmethyl, pyridinylmethyl, piperazinylphenyl, morpholinylmethylphenyl, cyclopropylpyrimidinyl, cyclopentylpyrimidinyl, cyclohexylpyrimidinyl, cyclohexenyl- pyrimidinyl, bicyclo[3.1.0]hexanylpyrimidinyl, azetidinylpyridinyl, isothiazolidinyl- pyridinyl, imidazolidinylpyridinyl, oxetanylpyrimidinyl, azetidinylpyrimidinyl, tetrahydrofuranylpyrimidinyl, isothiazolidinylpyrimidinyl, azetidinylmethylpyridinyl, piperazinylmethylpyridinyl, morpholinylmethylpyridinyl, thiomorpholinylmethyl- pyridinyl, morpholinylmethylpyrimidinyl, 3-azabicyclo[3.1.0]hexanylpyrimidinyl, 3- azabicyclo[4.1.0]heptanylpyrimidinyl, 3-azabicyclo[3.2. ljoctanylpyrimidinyl, 2-oxa-6- azaspiro[3.4]octanylpyridinyl, 5-azaspiro[2.4]heptanylpyrimidinyl, 7-oxa-2-azaspiro[3.5]- nonanylpyrimidinyl or morpholinylpyridinylmethyl, any of which groups may be optionally substituted by one or more substituents.
Appositely, R1 represents hydrogen, bromo, cyano or -C02Rd; or ethyl, phenyl, piperidinyl, piperazinyl, morpholinyl, 1,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl, pyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinyl- piperazinyl, pyrrolidinylpyridinyl, piperidinylpyridinyl, piperazinylpyridinyl,
morpholinylpyridinyl, thiomorpholinylpyridinyl, diazepanylpyridinyl, pyrrolidinylpyrimidinyl, piperazinylpyrimidinyl, morpholinylpyrimidinyl, thiomorpholinylpyrimidinyl, morpholinylmethylthienyl, morpholinylethylpyrazolyl, 2-oxa-6-aza- spiro[3.3]heptanylpyrimidinyl, 2-oxa-6-azaspiro[3.4]octanylpyrimidinyl, 2-oxa-6-aza- spiro[3.5]nonanylpyrimidinyl and 2-oxa-7-azaspiro[3.5]nonanylpyrimidinyl, any of which groups may be optionally substituted by one or more substituents.
Suitable examples of optional substituents on R1 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, trifluoroethoxy, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(C i _6)alkylamino, (C i _6)alkoxy(C i _6)alkylamino, N-[(C i _6)alkyl] -N- [hydro xy(C i _6)alkyl] - amino, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, aminocarbonyl and aminocarbonyl(Ci_6)alkyl. Additional examples include difluoromethyl, difluoroethyl, Ci_6 alkoxy(Ci_6)alkyl, Ci_6 alkylsulphinyl, Ci_6 alkylamino, hydroxy(Ci_6)alkylamino, [(Ci_6)alkoxy](hydroxy)(Ci_6)alkylamino,
[(C i _6)alkylthio] (hydroxy)(C i _6)alkylamino, di(C i _6)alkylamino(C i _6)alkylamino, N- [di(C i _6)alkylamino(C i _6)alkyl] -N- [hydroxy(C i _6)alkyl] amino, hydroxy(C i _6)alkyl(C3_7)- cycloalkylamino, (hydroxy)[(C3-7)cycloalkyl(Ci_6)alkyl]amino, (C3-7)heterocycloalkyl- (Ci_6)alkylamino, oxo(C3_7)heterocycloalkyl(Ci_6)alkylamino, (Ci_6)alkylheteroarylamino, heteroaryl(Ci_6)alkylamino, (Ci_6)alkylheteroaryl(Ci_6)alkylamino, C2_6 alkylcarbonyl- amino, N-[(Ci_6)alkyl]-N-[(C2_6)alkylcarbonyl]amino, C3_6 alkenylcarbonylamino, bis[(C3_6)alkenylcarbonyl]amino, N-[(Ci_6)alkyl]-N-[(C3_7)cycloalkylcarbonyl]amino, N- [carboxy(Ci_6)alkyl]-N-[(Ci_6)alkyl]amino, C2_6 alkoxy carbonylamino, C2_6 alkoxy- carbonyl(C i _6)alkylamino, N-[(C i _6)alkyl] -N- [(C i _6)alkylsulphonyl]amino , formyl,
(C3-7)cycloalkylcarbonyl, phenylcarbonyl, Ci_6 alkylaminocarbonyl, hydroxy(Ci_6)alkyl- aminocarbonyl, di(Ci_6)alkylaminocarbonyl and aminosulphonyl.
Typical examples of optional substituents on R1 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, Ci_6 alkoxy, trifluoroethoxy, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(Ci_6)alkylamino,
(C i _6)alkoxy(C i _6)alkylamino, N- [(C i _6)alkyl] -N-[hydroxy(C i _6)alkyl]amino, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl- (Ci_6)alkyl and aminocarbonyl.
Suitable examples of particular substituents on R1 include one, two or three substituents independently selected from fluoro, chloro, cyano, cyanoethyl, methyl, ethyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, hydroxyethyl, hydroxyisopropyl, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl,
ethoxycarbonylmethyl, ethoxycarbonylethyl, aminocarbonyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoromethyl, difluoroethyl, hydroxymethyl, methoxymethyl, methoxyethyl, methylsulphinyl, ethylamino,
hydroxy ethylamino, hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)- (methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethyl- amino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)- amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)- (hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyl- oxadiazolylamino, methylthiadiazolylamino, thiazolylmethylamino, thiazolylethylamino, pyrimidinylmethylamino, methylpyrazolylmethylammo, acetylamino, N-acetyl-N-methyl- amino, N-isopropylcarbonyl-N-methylamino, ethenylcarbonylamino, bis(ethenylcarbonyl)- amino, N-cyclopropylcarbonyl-N-methylamino, N-(carboxymethyl)-N-methylamino, N- (carboxyethyl)-N-methylamino, tert-butoxycarbonylamino, methoxy carbonylethylamino, N-methyl-N-(methylsulphonyl)amino, formyl, isopropylcarbonyl, cyclobutylcarbonyl, phenylcarbonyl, methoxycarbonyl, methylaminocarbonyl, hydroxyethylaminocarbonyl, dimethylaminocarbonyl and aminosulphonyl.
Typical examples of particular substituents on R1 include one, two or three substituents independently selected from fluoro, chloro, cyano, cyanoethyl, methyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl and aminocarbonyl.
Particular values of R1 include hydrogen, bromo, cyano, -C02Rd, ethoxycarbonylethyl, chlorophenyl, hydroxyphenyl, acetylphenyl, aminocarbonylphenyl, oxopiperidinyl, methylsulphonylpiperazinyl, morpholinyl, tert-butoxycarbonyl-1 ,2,3,6-tetrahydro- pyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, methylpyrazolyl, dimethylpyrazolyl, methylindazolyl, dimethylisoxazolyl, methylimidazolyl, pyridinyl, fluoropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)(methyl)pyridinyl, dimethylpyridinyl, trifluoro- methylpyridinyl, ethenylpyridinyl, methoxypyridinyl, (methoxy)(methyl)pyridinyl, isopropoxypyridinyl, trifluoroethoxypyridinyl, (methyl)(trifluoroethoxy)pyridinyl, oxopyridinyl, (methyl)(oxo)pyridinyl, (dimethyl)(oxo)pyridinyl, aminopyridinyl, dimethylaminopyridinyl, methoxyethylaminopyridinyl, N-(hydroxyethyl)-N-(methyl)- aminopyridinyl, carboxypyridinyl, quinolinyl, hydroxypyridazinyl, pyrimidinyl,
(ethyl)(methyl)pyrimidinyl, (hydroxy ethyl)(methyl)pyrimidinyl, (hydroxyisopropyl)- (methyl)pyrimidinyl, methoxypyrimidinyl, oxopyrimidinyl, aminopyrimidinyl, dimethylaminopyrimidinyl, methoxyethylaminopyrimidinyl, (aminocarbonylmethyl)- (methyl)pyrimidinyl, hydroxypyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethyl- phenyl, pyridinylpiperazinyl, (cyclobutyl)(methyl)pyrimidinyl, (cyclopropylmethyl)- (methyl)pyrimidinyl, pyrrolidinylpyridinyl, hydroxypyrrolidinylpyridinyl, piperidinyl- pyridinyl, acetylpiperidinylpyridinyl, piperazinylpyridinyl, (methyl)(piperazinyl)- pyridinyl, cyanoethylpiperazinylpyridinyl, trifluoroethylpiperazinylpyridinyl,
methylsulphonylpiperazinylpyridinyl, methylsulphonylethylpiperazinylpyridinyl, oxopiperazinylpyridinyl, acetylpiperazinylpyridinyl, (tert-butoxycarbonylpiperazinyl)- (methyl)pyridinyl, carboxymethylpiperazinylpyridinyl, carboxyethylpiperazinylpyridinyl, ethoxycarbonylmethylpiperazinylpyridinyl, ethoxycarbonylethylpiperazinylpyridinyl, morpholinylpyridinyl, thiomorpholinylpyridinyl, oxothiomorpholinylpyridinyl, dioxothiomorpholinylpyridinyl, oxodiazepanylpyridinyl, hydroxypyrrolidinylpyrimidinyl, (methyl)(tetrahydropyranyl)pyrimidinyl, (methyl)(piperidinyl)pyrimidinyl, (methyl)- (methylsulphonylpiperidinyl)pyrimidinyl, piperazinylpyrimidinyl, methylsulphonyl- piperazinylpyrimidinyl, oxopiperazinylpyrimidinyl, tert-butoxycarbonylpiperazinyl- pyrimidinyl, morpholinylpyrimidinyl, thiomorpholinylpyrimidinyl, morpholinylmethyl- thienyl, morpholinylethylpyrazolyl, 2-oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6- azaspiro[3.4]octanylpyrimidinyl, 2-oxa-6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7- azaspiro[3.5]nonanylpyrimidinyl. Additional values include chloro, trifluoromethyl, -ORa, -S02Ra, -OS02Ra, -CONRbRc, N-isopropylcarbonyl-N-methylaminomethyl, N- cyclopropylcarbonyl-N-methylaminomethyl, methylsulphinylphenyl, methylsulphonyl- phenyl, (methyl)(methylsulphonyl)phenyl, ethenylcarbonylaminophenyl, tert-butoxy- carbonylaminophenyl, phenylcarbonylphenyl, aminosulphonylphenyl, isopropylcarbonyl- piperidinyl, cyclobutylcarbonylpiperidinyl, methoxycarbonylpiperidinyl, methylthienyl, dihydrothieno[3,4-¾][l,4]dioxinyl, oxodihydropyrrolo[3,4-¾]pyridinyl, hydroxyisopropyl- pyridinyl, methylsulphonylpyridinyl, (difluoromethyl)(oxo)pyridinyl, (oxo)(trifluoro- methyl)pyridinyl, (methoxy)(oxo)pyridinyl, acetylaminopyridinyl, bis(ethenylcarbonyl)- aminopyridinyl, N-methyl-N-(methylsulphonyl)aminopyridinyl, formylpyridinyl, aminocarbonylpyridinyl, (aminocarbonyl)(methyl)pyridinyl, methylaminocarbonyl- pyridinyl, hydroxyethylaminocarbonylpyridinyl, dimethylaminocarbonylpyridinyl, (isopropyl)(methyl)pyrimidinyl, (isobutyl)(methyl)pyrimidinyl, hydroxyisopropyl- pyrimidinyl, (methoxymethyl)(methyl)pyrimidinyl, (methoxyethyl)(methyl)pyrimidinyl, methylsulphonylpyrimidinyl, dioxopyrimidinyl, ethylaminopyrimidinyl, hydroxyethyl- aminopyrimidinyl, hydroxypropylaminopyrimidinyl, (hydroxy)(methyl)propylamino- pyrimidinyl, (hydroxy)(methoxy)(methyl)propylaminopyrimidinyl, (hydroxy)- (methylthio)butylaminopyrimidinyl, dimethylaminoethylaminopyrimidinyl,
(dimethylamino)(methyl)propylaminopyrimidinyl, N-(dimethylaminoethyl)-N- (hydroxyethyl)aminopyrimidinyl, hydroxymethylcyclopentylaminopyrimidinyl, hydroxycyclobutylmethylaminopyrimidinyl, (cyclopropyl)(hydroxy)propylamino- pyrimidinyl, morpholinylethylaminopyrimidinyl, oxopyrrolidinylmethylamino- pyrimidinyl, ethyloxadiazolylaminopyrimidinyl, methylthiadiazolylaminopyrimidinyl, thiazolylmethylaminopyrimidinyl, thiazolylethylaminopyrimidinyl, pyrimidinylmethyl- aminopyrimidinyl, methylpyrazolylmethylaminopyrimidinyl, acetylaminopyrimidinyl, N- acetyl-N-methylaminopyrimidinyl, N-(carboxymethyl)-N-methylaminopyrimidinyl, N- (carboxyethyl)-N-methylaminopyrimidinyl, methoxycarbonylethylaminopyrimidinyl, N- methyl-N-(methylsulphonyl)aminopyrimidinyl, pyrazinyl, methylimidazolylmethyl, triazolylmethyl, methylpyridinylmethyl, methoxypyridinylmethyl, piperazinylphenyl, morpholinylmethylphenyl, (cyclopropyl)(methyl)pyrimidinyl, hydroxycyclobutyl- pyrimidinyl, (cyclopentyl)(methyl)pyrimidinyl, carboxycyclohexylpyrimidinyl, carboxy- cyclohexenylpyrimidinyl, carboxybicyclo[3.1.0]hexanylpyrimidinyl, oxopyrrolidinyl- pyridinyl, dioxoisothiazolidinylpyridinyl, oxoimidazolidinylpyridinyl, (hydroxy)(methyl)- piperidinylpyridinyl, (chloro)(piperazinyl)pyridinyl, difluoroethylpiperazinylpyridinyl, (methyl)(oxopiperazinyl)pyridinyl, (methyl)(morpholinyl)pyridinyl, oxomorpholinyl- pyridinyl, (methyl)(thiomorpholinyl)pyridinyl, (methyl)(oxothiomorpholinyl)pyridinyl, hydroxyoxetanylpyrimidinyl, hydroxyazetidinylpyrimidinyl, hydroxymethylazetidinyl- pyrimidinyl, (tert-butoxycarbonyl)(hydroxy)azetidinylpyrimidinyl, (methyl)- (tetrahydrofuranyl)pyrimidinyl, hydroxymethylpyrrolidinylpyrimidinyl, methoxymethyl- pyrrolidinylpyrimidinyl, oxopyrrolidinylpyrimidinyl, (methyl)(oxo)pyrrolidinyl- pyrimidinyl, dimethylaminopyrrolidinylpyrimidinyl, dioxoisothiazolidinylpyrimidinyl, hydroxytetrahydropyranylpyrimidinyl, hydroxypiperidinylpyrimidinyl, hydroxymethyl- piperidinylpyrimidinyl, methoxypiperidinylpyrimidinyl, oxopiperidinylpyrimidinyl, carboxypiperidinylpyrimidinyl, (carboxy)(methyl)piperidinylpyrimidinyl,
(amino)(carboxy)piperidinylpyrimidinyl, (ethoxycarbonyl)(methyl)piperidinyl- pyrimidinyl, aminocarbonylpiperidinylpyrimidinyl, hydroxyethylpiperazinylpyrimidinyl, (methyl)(oxopiperazinyl)pyrimidinyl, methylmorpholinylpyrimidinyl, oxomorpholinyl- pyrimidinyl, dioxothiomorpholinylpyrimidinyl, hydroxymethylazetidinylcarbonyl- pyridinyl, piperazinylcarbonylpyridinyl, methylpiperazinylcarbonylpyridinyl, morpholinylcarbonylpyridinyl, thiomorpholinylcarbonylpyridinyl, dioxothiomorpholinyl- carbonylpyridinyl, (methyl)(morpholinylmethyl)pyrimidinyl, carboxy-3 -azabicyclo- [3.1.0]hexanylpyrimidinyl, carboxy-3 -azabicyclo [4.1.0]heptanylpyrimidinyl, carboxy-3- azabicyclo[3.2.1 Joctanylpyrimidinyl, methoxycarbonyl-3 -azabicyclo [3.2.1 Joctanyl- pyrimidinyl, oxo-2-oxa-6-azaspiro[3.4]octanylpyridinyl, difluoro-5-azaspiro[2.4]- heptanylpyrimidinyl, 7-oxa-2-azaspiro[3.5]nonanylpyrimidinyl and morpholinyl- pyridiny lmethyl .
Selected values of R1 include hydrogen, bromo, cyano, -C02Rd, ethoxycarbonyl- ethyl, chlorophenyl, hydroxyphenyl, acetylphenyl, aminocarbonylphenyl, oxopiperidinyl, methylsulphonylpiperazinyl, morpholinyl, tert-butoxycarbonyl-1 ,2,3,6-tetrahydro- pyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, methylpyrazolyl, dimethylpyrazolyl, methylindazolyl, dimethylisoxazolyl, methylimidazolyl, pyridinyl, fluoropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)(methyl)pyridinyl, dimethylpyridinyl, trifluoro- methylpyridinyl, ethenylpyridinyl, methoxypyridinyl, (methoxy)(methyl)pyridinyl, isopropoxypyridinyl, trifluoroethoxypyridinyl, (methyl)(trifluoroethoxy)pyridinyl, oxopyridinyl, (methyl)(oxo)pyridinyl, (dimethyl)(oxo)pyridinyl, aminopyridinyl, dimethylaminopyridinyl, methoxyethylaminopyridinyl, N-(hydroxyethyl)-N-(methyl)- aminopyridinyl, carboxypyridinyl, quinolinyl, hydroxypyridazinyl, pyrimidinyl, methoxypyrimidinyl, oxopyrimidinyl, aminopyrimidinyl, dimethylaminopyrimidinyl, methoxyethylaminopyrimidinyl, hydroxypyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinylpiperazinyl, pyrrolidinylpyridinyl, hydroxy- pyrrolidinylpyridinyl, piperidinylpyridinyl, acetylpiperidinylpyridinyl, piperazinyl- pyridinyl, (methyl)(piperazinyl)pyridinyl, cyanoethylpiperazinylpyridinyl, trifluoroethyl- piperazinylpyridinyl, methylsulphonylpiperazinylpyridinyl, methylsulphonylethyl- piperazinylpyridinyl, oxopiperazinylpyridinyl, acetylpiperazinylpyridinyl, (tert-butoxy- carbonylpiperazinyl)(methyl)pyridinyl, carboxymethylpiperazinylpyridinyl, carboxy- ethylpiperazinylpyridinyl, ethoxycarbonylmethylpiperazinylpyridinyl, ethoxycarbonyl- ethylpiperazinylpyridinyl, morpholinylpyridinyl, thiomorpholinylpyridinyl,
oxothiomorpholinylpyridinyl, dioxothiomorpholinylpyridinyl, oxodiazepanylpyridmyl, hydroxypyrrolidinylpyrimidinyl, piperazinylpyrimidinyl, methylsulphonylpiperazinyl- pyrimidinyl, oxopiperazinylpyrimidinyl, tert-butoxycarbonylpiperazinylpyrimidinyl, morpholinylpyrimidinyl, thiomorpholinylpyrimidinyl, morpholmylmethylthienyl, morpholinylethylpyrazolyl, 2-oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6-aza- spiro[3.4]octanylpyrimidinyl, 2-oxa-6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7- azaspiro[3.5]nonanylpyrimidinyl.
Typically, R2 represents hydrogen, halogen or optionally substituted Ci_6 alkyl.
Typical examples of optional substituents on R2 include C2_6 alkoxycarbonyl.
Typical examples of particular substituents on R2 include ethoxycarbonyl.
In a first embodiment, R2 represents hydrogen. In a second embodiment, R2 represents halogen. In one aspect of that embodiment, R2 represents fluoro. In another aspect of that embodiment, R2 represents chloro. In a third embodiment, R2 represents optionally substituted Ci_6 alkyl. In one aspect of that embodiment, R2 represents monosubstituted methyl or monosubstituted ethyl.
Selected values of R2 include hydrogen, fluoro and ethoxycarbonylethyl.
Additionally, R2 may represent chloro.
In a particular embodiment, R3 represents hydrogen.
Suitably, R4 represents hydrogen or methyl.
In a first embodiment, R4 represents hydrogen. In a second embodiment, R4 represents Ci_6 alkyl, especially methyl.
Suitably, R5 represents hydrogen, methyl or ethyl.
In a first embodiment, R5 represents hydrogen. In a second embodiment, R5 represents Ci_6 alkyl, especially methyl or ethyl. In one aspect of that embodiment, R5 represents methyl. In another aspect of that embodiment, R5 represents ethyl.
Typical examples of suitable substituents on Ra, Rb, Rc, Rd or Re, or on the heterocyclic moiety -NRbRc, include halogen, Ci_6 alkyl, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_6 alkoxy(Ci_6)alkyl, Ci_6 alkylthio, Ci_6 alkylsulphinyl, Ci_6 alkylsulphonyl, hydroxy, hydroxy(Ci_6)alkyl, amino(Ci_6)alkyl, cyano, trifluoromethyl, oxo, C2_6 alkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, C2_6 alkylcarbonyloxy, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, phenylamino, pyridinylamino, C2_6 alkylcarbonylamino, C2-6 alkylcarbonylamino(Ci_6)alkyl, C2_6 alkoxycarbonylamino, Ci_6 alkylsulphonylamino, aminocarbonyl, Ci_6 alkylaminocarbonyl and di(Ci_6)alkylaminocarbonyl.
Typical examples of specific substituents on Ra, Rb, Rc, Rd or Re, or on the heterocyclic moiety -NRbRc, include fluoro, chloro, bromo, methyl, ethyl, isopropyl, methoxy, isopropoxy, difluoromethoxy, trifluoromethoxy, methoxymethyl, methylthio, ethylthio, methylsulphinyl, methylsulphonyl, hydroxy, hydroxymethyl, hydroxyethyl, aminomethyl, cyano, trifluoromethyl, oxo, acetyl, carboxy, methoxycarbonyl,
ethoxycarbonyl, tert-butoxycarbonyl, acetoxy, amino, methylamino, ethylamino, dimethylamino, phenylamino, pyridinylamino, acetylamino, tert-butoxycarbonylamino, acetylaminomethyl, methylsulphonylamino, aminocarbonyl, methylaminocarbonyl and dimethylaminocarbonyl.
Generally, Ra represents Ci_6 alkyl, aryl, aryl(Ci_6)alkyl, heteroaryl or
heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents. Additionally, Ra may represent trifluoromethyl; or C3_7 heterocycloalkyl or C3-7 heterocycloalkyl(Ci_6)alkyl, either of which groups may be optionally substituted by one or more substituents.
Suitably, Ra represents Ci_6 alkyl, aryl(Ci_6)alkyl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents. Additionally, Ra may represent trifluoromethyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl- (Ci_6)alkyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents.
Selected values of Ra include methyl, ethyl, benzyl and isoindolylpropyl, any of which groups may be optionally substituted by one or more substituents. Additional values include trifluoromethyl, propyl, isobutyl, phenyl, oxetanyl, azetidinyl, pyrrolidinyl and pyridinyl, any of which groups may be optionally substituted by one or more substituents
Selected examples of suitable substituents on Ra include Ci_6 alkoxy and oxo. Additional examples include halogen, Ci_6 alkyl, di(Ci_6)alkylamino, C2_6 alkylcarbonyl and C2-6 alkoxycarbonyl.
Selected examples of specific substituents on Ra include methoxy and oxo.
Additional examples include fluoro, methyl, dimethylamino, acetyl and tert- butoxycarbony 1. In one embodiment, Ra represents optionally substituted Ci_6 alkyl. In one aspect of that embodiment, Ra ideally represents unsubstituted Ci_6 alkyl, especially methyl, ethyl, propyl or isobutyl. In another aspect of that embodiment, Ra ideally represents substituted Ci_6 alkyl, e.g. methoxyethyl, dimethylaminoethyl or trifluoropropyl. In another embodiment, Ra represents optionally substituted aryl. In one aspect of that embodiment, Ra represents unsubstituted aryl, especially phenyl. In another aspect of that embodiment, Ra represents monosubstituted aryl, especially methylphenyl. In another embodiment, Ra represents optionally substituted aryl(Ci_6)alkyl, ideally unsubstituted aryl(Ci_6)alkyl, especially benzyl. In a further embodiment, Ra represents optionally substituted heteroaryl. In various aspects of that embodiment, Ra represents methoxy- pyridinyl, oxopyridinyl and (methyl)(oxo)pyridinyl. In a further embodiment, Ra represents optionally substituted heteroaryl(Ci_6)alkyl, e.g. dioxoisoindolylpropyl. In a further embodiment, Ra represents optionally substituted C3_7 heterocycloalkyl, e.g.
oxetanyl, azetidinyl or acetylazetidinyl. In a further embodiment, Ra represents optionally substituted C3_7 heterocycloalkyl(Ci_6)alkyl, e.g. acetylpyrrolidinylmethyl or tert- butoxycarbonylpyrrolidinylmethyl. In a further embodiment, Ra represents
trifluoromethyl.
Specific values of Ra include methyl, methoxyethyl, benzyl and dioxoisoindolylpropyl. Additional values include trifluoromethyl, ethyl, dimethylaminoethyl, propyl, trifluoropropyl, isobutyl, methylphenyl, oxetanyl, azetidinyl, acetylazetidinyl,
acetylpyrrolidinylmethyl, tert-butoxycarbonylpyrrolidinylmethyl, methoxypyridinyl, oxopyridinyl and (methyl)(oxo)pyridinyl.
In a particular aspect, Rb represents hydrogen or trifluoromethyl; or Ci_6 alkyl, C3_7 cycloalkyl, C3_7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, heteroaryl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents.
Selected values of Rb include hydrogen; or Ci_6 alkyl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl or C3_7 heterocycloalkyl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents. Additional values include C3_7 cycloalkyl and heteroaryl, either of which groups may be optionally substituted by one or more substituents. Typical values of Rb include hydrogen and Ci_6 alkyl. Additional values include C3_7 cycloalkyl and heteroaryl, either of which groups may be optionally substituted by one or more substituents.
Illustratively, Rb represents hydrogen or trifluoromethyl; or methyl, ethyl, n-propyl, isopropyl, n-butyl, 2-methylpropyl, tert-butyl, pentyl, hexyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, phenyl, benzyl, phenylethyl, azetidinyl, tetrahydrofuryl,
tetrahydrothienyl, pyrrolidinyl, piperidinyl, homopiperidinyl, morpholinyl,
azetidinylmethyl, tetrahydrofurylmethyl, pyrrolidinylmethyl, pyrrolidinylethyl,
pyrrolidinylpropyl, thiazolidinylmethyl, imidazolidinylethyl, piperidinylmethyl, piperidinylethyl, tetrahydroquinolinylmethyl, piperazinylpropyl, morpholinylmethyl, morpholinylethyl, morpholinylpropyl, pyridinyl, indolylmethyl, pyrazolylmethyl, pyrazolylethyl, imidazolylmethyl, imidazolylethyl, benzimidazolylmethyl, triazolylmethyl, pyridinylmethyl or pyridinylethyl, any of which groups may be optionally substituted by one or more substituents. Additionally, Rb may represent indanyl, which group may be optionally substituted by one or more substituents.
Representative values of Rb include hydrogen; or methyl, ethyl, n-propyl, benzyl, pyrrolidinyl or morpholinylpropyl, any of which groups may be optionally substituted by one or more substituents. Additionally, Rb may represent indanyl or pyridinyl, either of which groups may be optionally substituted by one or more substituents.
Selected examples of suitable substituents on Rb include Ci_6 alkoxy, Ci_6 alkylthio, Ci_6 alkylsulphinyl, Ci_6 alkylsulphonyl, hydroxy, cyano, C2_6 alkoxycarbonyl, di- (Ci_6)alkylamino and C2_6 alkoxy carbonylamino.
Selected examples of specific substituents on Rb include methoxy, methylthio, methylsulphinyl, methylsulphonyl, hydroxy, cyano, tert-butoxycarbonyl, dimethylamino and tert-butoxy carbonylamino.
Specific values of Rb include hydrogen, methyl, methoxyethyl, methylthioethyl, methylsulphinylethyl, methylsulphonylethyl, hydroxyethyl, cyanoethyl, dimethylamino- ethyl, tert-butoxycarbonylaminoethyl, dihydroxypropyl, benzyl, pyrrolidinyl, tert- butoxycarbonylpyrrolidinyl and morpholinylpropyl. Additionally, Rb may represent indanyl or pyridinyl.
In one embodiment, Rb represents hydrogen. In another embodiment, Rb represents Ci_6 alkyl, especially methyl. Selected values of Rc include hydrogen; or Ci_6 alkyl, C3_7 cycloalkyl or C3_7 heterocycloalkyl, any of which groups may be optionally substituted by one or more substituents.
In a particular aspect, Rc represents hydrogen, Ci_6 alkyl or C3_7 cycloalkyl.
Representative values of Rc include hydrogen; or methyl, cyclobutyl, cyclopentyl, cyclohexyl, tetrahydropyranyl and piperidinyl, any of which groups may be optionally substituted by one or more substituents.
Selected examples of suitable substituents on Rc include C2_6 alkylcarbonyl and C2_6 alkoxycarbonyl.
Selected examples of specific substituents on Rc include acetyl and tert- butoxycarbony 1.
Specific values of Rc include hydrogen, methyl, cyclobutyl, cyclopentyl, cyclohexyl, tetrahydropyranyl, acetylpiperidinyl and tert-butoxycarbonylpiperidinyl,
Suitably, Rc represents hydrogen or Ci_6 alkyl. In one embodiment, Rc is hydrogen. In another embodiment, Rc represents Ci_6 alkyl, especially methyl or ethyl, particularly methyl. In a further embodiment, Rc represents C3_7 cycloalkyl, e.g. cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl.
Alternatively, the moiety -NRbRc may suitably represent azetidin-l-yl, pyrrolidin- 1-yl, oxazolidin-3-yl, isoxazolidin-2-yl, thiazolidin-3-yl, isothiazolidin-2-yl, piperidin-1- yl, morpholin-4-yl, thiomorpholin-4-yl, piperazin-l-yl, homopiperidin-l-yl,
homomorpholin-4-yl or homopiperazin-l-yl, any of which groups may be optionally substituted by one or more substituents.
Selected examples of suitable substituents on the heterocyclic moiety -NRbRc include Ci_6 alkyl, Ci_6 alkylsulphonyl, hydroxy, hydroxy(Ci_6)alkyl, amino(Ci_6)alkyl, cyano, oxo, C2_6 alkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, amino, C2_6 alkylcarbonyl- amino, C2_6 alkylcarbonylamino(Ci_6)alkyl, C2_6 alkoxycarbonylamino, Ci_6 alkyl- sulphonylamino and aminocarbonyl.
Selected examples of specific substituents on the heterocyclic moiety -NRbRc include methyl, methylsulphonyl, hydroxy, hydroxymethyl, aminomethyl, cyano, oxo, acetyl, carboxy, ethoxycarbonyl, amino, acetylamino, acetylaminomethyl, tert-butoxy- carbonylamino, methylsulphonylamino and aminocarbonyl.
Specific values of the moiety -NRbRc include azetidin-l-yl, hydroxyazetidin-l-yl, hydroxymethylazetidin- 1 -yl, (hydroxy)(hydroxymethyl)azetidin- 1 -yl, aminomethyl- azetidin-l-yl, cyanoazetidin-l-yl, carboxyazetidin-l-yl, aminoazetidin-l-yl,
aminocarbonylazetidin-l-yl, pyrrolidin-l-yl, aminomethylpyrrolidin-l-yl, oxopyrrolidin-1- yl, acetylaminomethylpyrrolidin-l-yl, tert-butoxycarbonylaminopyrrolidin-l-yl, oxo- oxazolidin-3-yl, hydroxyisoxazolidin-2-yl, thiazolidin-3-yl, oxothiazolidin-3-yl, dioxo- isothiazolidin-2-yl, piperidin- 1 -yl, hydroxypiperidin- 1 -yl, hydroxymethylpiperidin- 1 -yl, aminopiperidin- 1 -yl, acetylaminopiperidin- 1 -yl, tert-butoxycarbonylaminopiperidin- 1 -yl, methylsulphonylaminopiperidin-l-yl, morpholin-4-yl, piperazin-l-yl, methylpiperazin-1- yl, methylsulphonylpiperazin-l-yl, oxopiperazin-l-yl, acetylpiperazin-l-yl,
ethoxycarbonylpiperazin-l-yl and oxohomopiperazin-l-yl.
Suitably, Rd represents hydrogen; or Ci_6 alkyl, aryl or heteroaryl, any of which groups may be optionally substituted by one or more substituents.
Selected examples of suitable values for Rd include hydrogen, methyl, ethyl, isopropyl, 2-methylpropyl, tert-butyl, cyclopropyl, cyclobutyl, phenyl, thiazolidinyl, thienyl, imidazolyl and thiazolyl, any of which groups may be optionally substituted by one or more substituents.
Selected examples of suitable substituents on Rd include halogen, Ci_6 alkyl, Ci_6 alkoxy, oxo, C2_6 alkylcarbonyloxy and di(Ci_6)alkylamino.
Selected examples of particular substituents on Rd include fluoro, methyl, methoxy, oxo, acetoxy and dimethylamino.
In one embodiment, Rd represents hydrogen. In another embodiment, Rd represents optionally substituted Ci_6 alkyl. In one aspect of that embodiment, Rd ideally represents unsubstituted Ci_6 alkyl, e.g. methyl, ethyl, isopropyl, 2-methylpropyl or tert- butyl, especially methyl. In another aspect of that embodiment, Rd ideally represents substituted Ci_6 alkyl, e.g. substituted methyl or substituted ethyl, including
acetoxymethyl, dimethylaminomethyl and trifluoroethyl. In another embodiment, Rd represents optionally substituted aryl. In one aspect of that embodiment, Rd represents unsubstituted aryl, especially phenyl. In another aspect of that embodiment, Rd represents monosubstituted aryl, especially methylphenyl. In a further aspect of that embodiment, Rd represents disubstituted aryl, e.g. dimethoxyphenyl. In a further embodiment, Rd represents optionally substituted heteroaryl, e.g. thienyl, chlorothienyl, methylthienyl, methylimidazolyl or thiazolyl. In another embodiment, Rd represents optionally substituted C3_7 cycloalkyl, e.g. cyclopropyl or cyclobutyl. In a further embodiment, Rd represents optionally substituted C3_7 heterocycloalkyl, e.g. thiazolidinyl or oxo- thiazolidinyl.
Selected examples of specific values for Rd include hydrogen, methyl, acetoxy- methyl, dimethylaminomethyl, ethyl, trifluoroethyl, isopropyl, 2-methylpropyl, tert-butyl, cyclopropyl, cyclobutyl, phenyl, dimethoxyphenyl, thiazolidinyl, oxothiazolidinyl, thienyl, chlorothienyl, methylthienyl, methylimidazolyl and thiazolyl.
Suitably, Re represents Ci_6 alkyl or aryl, either of which groups may be optionally substituted by one or more substituents.
Selected examples of suitable substituents on Re include Ci_6 alkyl, especially methyl.
In one embodiment, Re represents optionally substituted Ci_6 alkyl, ideally unsubstituted Ci_6 alkyl, e.g. methyl or propyl, especially methyl. In another embodiment, Re represents optionally substituted aryl. In one aspect of that embodiment, Re represents unsubstituted aryl, especially phenyl. In another aspect of that embodiment, Re represents monosubstituted aryl, especially methylphenyl. In a further embodiment, Re represents optionally substituted heteroaryl.
Selected values of Re include methyl, propyl and methylphenyl.
One sub-class of compounds according to the invention is represented by the compounds of formula (IIA) and N-oxides thereof, and pharmaceutically acceptable salts and solvates thereof, and glucuronide derivatives thereof, and co-crystals thereof:
Figure imgf000046_0001
(IIA) wherein
R11 represents halogen or cyano; or Ci_6 alkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl, heteroaryl, heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C3-7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl-(C3_7)heterocycloalkyl-, (C3-7)- cycloalkyl-heteroaryl-, (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, (C4_7)cycloalkenyl- heteroaryl-, (C4_9)bicycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3-7)- heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl -heteroaryl-, (C4-c>)- heterobicycloalkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents;
R12 represents represents hydrogen, halogen, trifluoromethyl or optionally substituted Ci_6 alkyl;
R15 and R16 independently represent hydrogen, halogen, cyano, nitro, Ci_6 alkyl, trifluoromethyl, hydroxy, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_6 alkylthio, Ci_6 alkylsulfinyl, Ci_6 alkylsulfonyl, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, arylamino, C2_6 alkylcarbonylamino, Ci_6 alkylsulfonylamino, formyl, C2_6 alkylcarbonyl, C3-6 cycloalkylcarbonyl, C3-6 heterocycloalkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulfonyl, Ci_6 alkylaminosulfonyl or di(Ci_6)alkylaminosulfonyl; and
E, Q and Z are as defined above.
The present invention also provides a compound of formula (IIA) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a co-crystal thereof, wherein
R11 represents halogen or cyano; or Ci_6 alkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl - (C3_7)heterocycloalkyl-, (C3_7)cycloalkyl-heteroaryl-, (C3_7)cycloalkyl(Ci_6)alkyl- heteroaryl-, (C4_7)cycloalkenyl -heteroaryl-, (C3_7)heterocycloalkyl-heteroaryl-,
(C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents;
R12 represents hydrogen; and
E, O, Z, R15 and R16 are as defined above.
The present invention also provides a compound of formula (IIA) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, wherein
R11 represents halogen or cyano; or Ci_6 alkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl - (C3_7)heterocycloalkyl-, (C4_7)cycloalkenyl-heteroaryl-, (C3_7)heterocycloalkyl -heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl -heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents;
R12 represents hydrogen; and
E, Q, Z, R15 and R16 are as defined above.
Aptly, R1 1 represents halogen or cyano; or Ci_6 alkyl, aryl, C3_7 heterocycloalkyl,
C3_7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl- (C3_7)heterocycloalkyl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl- (Ci_6)alkyl-heteroaryl- or (C4-9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents. Additionally, R1 1 may represent (C3_7)cycloalkyl-heteroaryl- or (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents. Additionally, R11 may represent heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C4-7)cycloalkenyl- heteroaryl-, (C4_9)-bicycloalkyl-heteroaryl- or (C4_9)heterobicycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
Examples of optional substituents which may be present on R1 1 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, nitro, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_3 alkylenedioxy, Ci_6 alkoxy(Ci_6)alkyl, Ci_6 alkyl- thio, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, (Ci_6)alkoxy(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy(Ci_6)alkyl]- amino, C2_6 alkylcarbonylamino, C2_6 alkoxycarbonylamino, Ci_6 alkylaminocarbonyl- amino, Ci_6 alkylsulphonylamino, formyl, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, aminocarbonyl, Ci_6 alkylamino- carbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl and di(Ci_6)alkylaminosulphonyl. Additional examples include hydroxy(Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety Ω as defined herein, -(Ci_6)alkyl-Q, and aminocarbonyl(Ci_6)alkyl. Additional examples include difluoromethyl, difluoroethyl, Ci_6 alkylsulphinyl, hydroxy(C ^alkylamino, [(C i _6)alkoxy] (hydroxy)(C i _6)alkylamino, [(C i _6)alkylthio] (hydroxy)(C i _6)alkyl- amino, di(C i _6)alkylamino(C i _6)alkylamino, N-[di(C i _6)alkylamino(C i _6)alkyl] -N- [hydroxy(Ci_6)alkyl]amino, hydroxy(Ci_6)alkyl(C3_7)cycloalkylamino, (hydroxy)[(C3_7)- cycloalkyl(Ci_6)alkyl]amino, (C3-7)heterocycloalkyl(Ci_6)alkylamino, oxo(C3_7)- heterocycloalkyl(Ci_6)alkylamino, (Ci_6)alkylheteroarylamino, heteroaryl(Ci_6)alkylamino, (C i _6)alkylheteroaryl(C i _6)alkylamino, N- [(C i _6)alkyl] -N-[(C2_6)alkylcarbonyl] amino , C3_6 alkenylcarbonylamino, bis[(C3_6)alkenylcarbonyl] amino, N-[carboxy(C i _6)alkyl] -N- [(C i _6)- alkyljamino, C2_6 alkoxycarbonyl(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[(Ci_6)alkyl- sulphonyl] amino, (C3_7)cycloalkylcarbonyl, phenylcarbonyl and hydroxy(Ci_6)alkylamino- carbonyl.
Examples of particular substituents on R11 include fluoro, chloro, bromo, cyano, cyanoethyl, nitro, methyl, ethyl, tert-butyl, trifluoromethyl, trifiuoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, difluoromethoxy, trifiuoromethoxy, trifluoroethoxy, methylenedioxy, ethylenedioxy, methoxymethyl, methylthio, methylsulphonyl, methyl- sulphonylethyl, oxo, amino, methylamino, dimethylamino, methoxy ethylamino, N- (hydroxyethyl)-N-(methyl)amino, acetylamino, methoxycarbonylamino, ethoxycarbonyl- amino, ethylaminocarbonylamino, butylaminocarbonylamino, methylsulphonylamino, formyl, acetyl, carboxy, carboxymethyl, carboxyethyl, methoxycarbonyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl, aminocarbonyl, methyl- aminocarbonyl, dimethylaminocarbonyl, aminosulphonyl, methylaminosulphonyl and dimethylaminosulphonyl. Additional examples include hydroxyethyl, hydroxyisopropyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoro- methyl, difluoroethyl, hydroxymethyl, methoxyethyl, methylsulphinyl, ethylamino, hydroxyethylamino, hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)- (methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethyl- amino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)- amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)- (hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyl- oxadiazolylamino, methylthiadiazolylamino, thiazolylmethylamino, thiazolylethylamino, pyrimidinylmethylamino, methylpyrazolylmethylamino, N-acetyl-N-methylamino, N- isopropylcarbonyl-N-methylamino, ethenylcarbonylamino, bis(ethenylcarbonyl)amino, N- (carboxymethyl)-N-methylamino, N-(carboxyethyl)-N-methylamino, tert-butoxycarbonyl- amino, methoxycarbonylethylamino, N-methyl-N-(methylsulphonyl)amino, isopropyl- carbonyl, cyclobutylcarbonyl, phenylcarbonyl and hydroxyethylaminocarbonyl.
Typically, R11 represents Ci_6 alkyl, aryl, C3_7 heterocycloalkyl, C3_7
heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl-
(C3_7)heterocycloalkyl-, (C4_7)cycloalkenyl-heteroaryl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents. Additionally, R11 may represent (C3_7)cycloalkyl-heteroaryl- or (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents.
Additionally, R11 may represent heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl- or (C4_9)bicycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
Generally, R11 represents Ci_6 alkyl, aryl, C3-7 heterocycloalkyl, C3-7
heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl - (C3_7)heterocycloalkyl-, (C3_7)cycloalkyl-heteroaryl-, (C3_7)cycloalkyl(Ci_6)alkyl- heteroaryl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl- heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents. Additionally, R11 may represent heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C4_7)cycloalkenyl-heteroaryl-, (C4_9)bicycloalkyl-heteroaryl- or (C4_9)heterobicycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
More typically, R11 represents Ci_6 alkyl, aryl, C3-7 heterocycloalkyl, C3-7 heterocycloalkenyl, heteroaryl, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl - (C3_7)heterocycloalkyl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl- (Ci_6)alkyl -heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents. Additionally, R11 may represent heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C3_7)cycloalkyl-heteroaryl-, (C4_7)cycloalkenyl-heteroaryl-, (C4_9)bicycloalkyl-heteroaryl- or (C4_9)heterobicycloalkyl- heteroaryl-, any of which groups may be optionally substituted by one or more substituents.
In a first embodiment, R11 represents halogen. In one aspect of that embodiment,
R11 represents bromo.
In a second embodiment, R11 represents cyano.
In a third embodiment, R11 represents optionally substituted Ci_6 alkyl. In one aspect of that embodiment, R11 represents optionally substituted methyl. In another aspect of that embodiment, R11 represents optionally substituted ethyl.
In a fourth embodiment, R11 represents optionally substituted aryl. In one aspect of that embodiment, R11 represents optionally substituted phenyl.
In a fifth embodiment, R11 represents optionally substituted C3_7 heterocycloalkyl. In a sixth embodiment, R11 represents optionally substituted C3_7
heterocycloalkenyl.
In a seventh embodiment, R11 represents optionally substituted heteroaryl. In selected aspects of that embodiment, R11 represents benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl or pyrazinyl, any of which groups may be optionally substituted by one or more substituents. In a further aspect, R11 represents optionally substituted thiazolyl.
In an eighth embodiment, R11 represents optionally substituted (C3-7)- heterocycloalkyl(Ci_6)alkyl-aryl-. In a first aspect of that embodiment, R11 represents optionally substituted pyrrolidinylmethylphenyl-. In a second aspect of that embodiment, R11 represents optionally substituted piperazinylmethylphenyl-. In a third aspect of that embodiment, R11 represents optionally substituted morpholinylmethylphenyl-.
In a ninth embodiment, R11 represents optionally substituted heteroaryl-(C3_7)- heterocycloalkyl-. In one aspect of that embodiment, R11 represents optionally substituted pyridinylpiperazinyl- .
In a tenth embodiment, R11 represents optionally substituted (C3_7)cycloalkyl- heteroaryl-. In a first aspect of that embodiment, R11 represents optionally substituted cyclopropylpyrimidinyl-. In a second aspect of that embodiment, R11 represents optionally substituted cyclobutylpyrimidinyl-. In a third aspect of that embodiment, R11 represents optionally substituted cyclopentylpyrimidinyl-. In a fourth aspect of that embodiment, R11 represents optionally substituted cyclohexylpyrimidinyl-.
In an eleventh embodiment, R11 represents optionally substituted (C3_7)cycloalkyl- (Ci_6)alkyl -heteroaryl-. In one aspect of that embodiment, R11 represents optionally substituted cyclopropylmethylpyrimidinyl- .
In a twelfth embodiment, R11 represents optionally substituted (C4_7)cycloalkenyl- heteroaryl-.
In a thirteenth embodiment, R11 represents optionally substituted (C4-c>)- bicycloalkyl-heteroaryl-. In one aspect of that embodiment, R11 represents optionally substituted bicyclo[3.1.0]hexanylpyrimidinyl-.
In a fourteenth embodiment, R11 represents optionally substituted (C3-7)- heterocycloalkyl-heteroaryl-. In a first aspect of that embodiment, R11 represents optionally substituted azetidinylpyridinyl-. In a second aspect of that embodiment, R11 represents optionally substituted pyrrolidinylpyridinyl-. In a third aspect of that embodiment, R11 represents optionally substituted isothiazolidinylpyridinyl-. In a fourth aspect of that embodiment, R11 represents optionally substituted imidazolidinylpyridinyl-. In a fifth aspect of that embodiment, R11 represents optionally substituted piperidinyl- pyridinyl-. In a sixth aspect of that embodiment, R11 represents optionally substituted piperazinylpyridinyl-. In a seventh aspect of that embodiment, R11 represents optionally substituted morpholinylpyridinyl-. In an eighth aspect of that embodiment, R11 represents optionally substituted thiomorpholinylpyridinyl-. In a ninth aspect of that embodiment, R11 represents optionally substituted diazepanylpyridinyl-. In a tenth aspect of that embodiment, R11 represents optionally substituted oxetanylpyrimidinyl-. In an eleventh aspect of that embodiment, R11 represents optionally substituted azetidinylpyrimidinyl-. In a twelfth aspect of that embodiment, R11 represents optionally substituted
tetrahydrofuranylpyrimidinyl-. In a thirteenth aspect of that embodiment, R11 represents optionally substituted pyrrolidinylpyrimidinyl-. In a fourteenth aspect of that
embodiment, R11 represents optionally substituted isothiazolidinylpyrimidinyl-. In a fifteenth aspect of that embodiment, R11 represents optionally substituted
tetrahydropyranylpyrimidinyl-. In a sixteenth aspect of that embodiment, R11 represents optionally substituted piperidinylpyrimidinyl-. In a seventeenth aspect of that
embodiment, R11 represents optionally substituted piperazinylpyrimidinyl-. In an eighteenth aspect of that embodiment, R11 represents optionally substituted morpholinyl- pyrimidinyl-. In a nineteenth aspect of that embodiment, R11 represents optionally substituted thiomorpholinylpyrimidinyl- .
In a fifteenth embodiment, R11 represents optionally substituted (C3-7)- heterocycloalkyl(Ci_6)alkyl-heteroaryl-. In a first aspect of that embodiment, R11 represents optionally substituted morpholinylmethylthienyl-. In a second aspect of that embodiment, R11 represents optionally substituted morpholinylethylpyrazolyl-. In a third aspect of that embodiment, R11 represents optionally substituted azetidinylmethyl- pyridinyl-. In a fourth aspect of that embodiment, R11 represents optionally substituted piperazinylmethylpyridinyl-. In a fifth aspect of that embodiment, R11 represents optionally substituted morpholinylmethylpyridinyl-. In a sixth aspect of that embodiment, R11 represents optionally substituted thiomorpholinylmethylpyridinyl-. In a seventh aspect of that embodiment, R11 represents optionally substituted morpholinylmethyl- pyrimidinyl-. In a sixteenth embodiment, R11 represents optionally substituted (C3-7)- heterocycloalkenyl-heteroaryl-.
In a seventeenth embodiment, R11 represents optionally substituted (C4-9)- heterobicycloalkyl-heteroaryl- .
In an eighteenth embodiment, R11 represents optionally substituted (C4-c>)- spiroheterocycloalkyl-heteroaryl-.
In a nineteenth embodiment, R11 represents optionally substituted (C3-7)- heterocycloalkyl-aryl-. In one aspect of that embodiment, R11 represents optionally substituted piperazinylphenyl.
In a twentieth embodiment, R11 represents optionally substituted heteroaryl-
(Ci_6)alkyl. In a first aspect of that embodiment, R11 represents optionally substituted triazolylmethyl. In a second aspect of that embodiment, R11 represents optionally substituted pyridinylmethyl.
Appropriately, R11 represents bromo or cyano; or ethyl, phenyl, piperidinyl, piperazinyl, morpholinyl, 1,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl, pyrimidinyl, pyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinyl- piperazinyl, cyclobutylpyrimidinyl, cyclopropylmethylpyrimidinyl, pyrrolidinylpyridinyl, piperidinylpyridinyl, piperazinylpyridinyl, morpholinylpyridinyl, thiomorpholinyl- pyridinyl, diazepanylpyridinyl, pyrrolidinylpyrimidinyl, tetrahydropyranylpyrimidinyl, piperidinylpyrimidinyl, piperazinylpyrimidinyl, morpholinylpyrimidinyl,
thiomorpholinylpyrimidinyl, morpholinylmethylthienyl, morpholinylethylpyrazolyl, 2- oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6-azaspiro[3.4]octanylpyrimidinyl, 2-oxa- 6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7-azaspiro[3.5]nonanylpyrimidinyl, any of which groups may be optionally substituted by one or more substituents. Additionally, R11 may represent methyl, dihydrothieno[3,4-£][l,4]dioxinyl, dihydropyrrolo[3,4-¾]- pyridinyl, triazolylmethyl, pyridinylmethyl, piperazinylphenyl, morpholinylmethylphenyl, cyclopropylpyrimidinyl, cyclopentylpyrimidmyl, cyclohexylpyrimidinyl, cyclohexenyl- pyrimidinyl, bicyclo[3.1.0]hexanylpyrimidinyl, azetidinylpyridinyl, isothiazolidinyl- pyridinyl, imidazolidinylpyridinyl, oxetanylpyrimidinyl, azetidinylpyrimidinyl, tetrahydrofuranylpyrimidinyl, isothiazolidinylpyrimidinyl, azetidinylmethylpyridinyl, piperazinylmethylpyridinyl, morpholinylmethylpyridinyl, thiomorpholinylmethyl- pyridinyl, morpholinylmethylpyrimidinyl, 3-azabicyclo[3.1.0]hexanylpyrimidinyl, 3- azabicyclo[4.1.0]heptanylpyrimidinyl, 3-azabicyclo[3.2. ljoctanylpyrimidinyl, 2-oxa-6- azaspiro[3.4]octanylpyridinyl, 5-azaspiro[2.4]heptanylpyrimidinyl or 7-oxa-2-azaspiro- [3.5]nonanylpyrimidinyl, any of which groups may be optionally substituted by one or more substituents.
Appositely, R1 1 represents bromo or cyano; or ethyl, phenyl, piperidinyl, piperazinyl, morpholinyl, 1 ,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, indazolyl, isoxazolyl, imidazolyl, pyridinyl, quinolinyl, pyridazinyl,
pyrimidinyl, pyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinyl- piperazinyl, pyrrolidinylpyridinyl, piperidinylpyridinyl, piperazinylpyridinyl,
morpholinylpyridinyl, thiomorpholinylpyridinyl, diazepanylpyridinyl, pyrrolidinyl- pyrimidinyl, piperazinylpyrimidinyl, morpholinylpyrimidinyl, thiomorpholinyl- pyrimidinyl, morpholinylmethylthienyl, morpholinylethylpyrazolyl, 2-oxa-6-azaspiro- [3.3]heptanylpyrimidinyl, 2-oxa-6-azaspiro[3.4]octanylpyrimidinyl, 2-oxa-6-azaspiro- [3.5]nonanylpyrimidinyl and 2-oxa-7-azaspiro[3.5]nonanylpyrimidinyl, any of which groups may be optionally substituted by one or more substituents.
Suitable examples of optional substituents on R11 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, trifluoroethoxy, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(Ci_6)alkylamino, (Ci_6)alkoxy(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy(Ci_6)alkyl]- amino, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, aminocarbonyl and aminocarbonyl(Ci_6)alkyl. Additional examples include difluoromethyl, difluoroethyl, Ci_6 alkoxy(Ci_6)alkyl, Ci_6 alkylsulphinyl, Ci_6 alkylamino, hydroxy(Ci_6)alkylamino, [(Ci_6)alkoxy](hydroxy)(Ci_6)alkylamino,
[(Ci_6)alkylthio](hydroxy)(Ci_6)alkylamino, di(Ci_6)alkylamino(Ci_6)alkylamino, N-
[di(C i _6)alkylamino(C i _6)alkyl] -N- [hydroxy(C i _6)alkyl] amino, hydroxy(C i _6)alkyl(C3_7)- cycloalkylamino, (hydroxy)[(C3-7)cycloalkyl(Ci_6)alkyl]amino, (C3_7)heterocycloalkyl- (Ci_6)alkylamino, oxo(C3_7)heterocycloalkyl(Ci_6)alkylamino, (Ci_6)alkylheteroarylamino, heteroaryl(Ci_6)alkylamino, (Ci_6)alkylheteroaryl(Ci_6)alkylamino, C2_6 alkylcarbonyl- amino, N-[(Ci_6)alkyl]-N-[(C2_6)alkylcarbonyl]amino, C3_6 alkenylcarbonylamino, bis[(C3_6)alkenylcarbonyl] amino, N-[carboxy(C i _6)alkyl] -N- [(C i _6)alkyl] amino, C2_6 alkoxy carbonylamino, C2_6 alkoxycarbonyl(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[(Ci_6)- alkylsulphonyl] amino, formyl, (C3_7)cycloalkylcarbonyl, phenylcarbonyl, Ci_6 alkylamino- carbonyl, hydroxy(Ci_6)alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl and amino- sulphonyl.
Typical examples of optional substituents on R1 1 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, Ci_6 alkoxy, trifluoroethoxy, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, amino, di(Ci_6)alkylamino,
(C i _6)alkoxy(C i _6)alkylamino, N- [(C i _6)alkyl] -N-[hydroxy(C i _6)alkyl]amino, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl- (Ci_6)alkyl and aminocarbonyl.
Suitable examples of particular substituents on R11 include one, two or three substituents independently selected from fluoro, chloro, cyano, cyanoethyl, methyl, ethyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, hydroxyethyl, hydroxyisopropyl, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl,
ethoxycarbonylmethyl, ethoxycarbonylethyl, aminocarbonyl and aminocarbonylmethyl. Additional examples include isopropyl, isobutyl, difluoromethyl, dif uoroethyl, hydroxymethyl, methoxymethyl, methoxyethyl, methylsulphinyl, ethylamino,
hydroxy ethylamino, hydroxypropylamino, (hydroxy)(methyl)propylamino, (hydroxy)- (methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethyl- amino, (dimethylamino)(methyl)propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)- amino, hydroxymethylcyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)- (hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyl- oxadiazolylamino, methylthiadiazolylamino, thiazolylmethylamino, thiazolylethylamino, pyrimidinylmethylamino, methylpyrazolylmethylamino, acetylamino, N-acetyl-N-methyl- amino, N-isopropylcarbonyl-N-methylamino, ethenylcarbonylamino, bis(ethenylcarbonyl)- amino, N-(carboxymethyl)-N-methylamino, N-(carboxyethyl)-N-methylamino, tert- butoxycarbonylamino, methoxy carbonylethylamino, N-methyl-N-(methylsulphonyl)- amino, formyl, isopropylcarbonyl, cyclobutylcarbonyl, phenylcarbonyl, methoxycarbonyl, methylaminocarbonyl, hydroxyethylaminocarbonyl, dimethylaminocarbonyl and amino- sulphonyl.
Typical examples of particular substituents on R11 include one, two or three substituents independently selected from fluoro, chloro, cyano, cyanoethyl, methyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, isopropoxy, trifluoroethoxy, methylsulphonyl, methylsulphonylethyl, oxo, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, acetyl, carboxy, carboxymethyl, carboxyethyl, ethoxycarbonyl, tert-butoxycarbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl and aminocarbonyl.
Particular values of R1 1 include bromo, cyano, ethoxycarbonylethyl, chlorophenyl, hydroxyphenyl, acetylphenyl, aminocarbonylphenyl, oxopiperidinyl, methylsulphonyl- piperazinyl, morpholinyl, tert-butoxycarbonyl-l ,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, methylpyrazolyl, dimethylpyrazolyl, methylindazolyl, dimethylisoxazolyl, methylimidazolyl, pyridinyl, fluoropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)(methyl)pyridinyl, dimethylpyridinyl, trifluoromethylpyridinyl, ethenylpyridinyl, methoxypyridinyl, (methoxy)(methyl)pyridinyl, isopropoxypyridinyl, trifluoroethoxypyridinyl, (methyl)(trifluoroethoxy)pyridinyl, oxopyridinyl, (methyl)- (oxo)pyridinyl, (dimethyl)(oxo)pyridinyl, aminopyridinyl, dimethylaminopyridinyl, methoxyethylaminopyridinyl, N-(hydroxyethyl)-N-(methyl)aminopyridinyl, carboxy- pyridinyl, quinolinyl, hydroxypyridazinyl, pyrimidinyl, (ethyl)(methyl)pyrimidinyl, (hydroxyethyl)(methyl)pyrimidinyl, (hydroxyisopropyl)(methyl)pyrimidinyl, methoxy- pyrimidinyl, oxopyrimidinyl, aminopyrimidinyl, dimethylaminopyrimidinyl, methoxy- ethylaminopyrimidinyl, (aminocarbonylmethyl)(methyl)pyrimidinyl, hydroxypyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinylpiperazinyl, (cyclobutyl)- (methyl)pyrimidinyl, (cyclopropylmethyl)(methyl)pyrimidinyl, pyrrolidinylpyridinyl, hydroxypyrrolidinylpyridinyl, piperidinylpyridinyl, acetylpiperidinylpyridinyl, piperazinylpyridinyl, (methyl)(piperazinyl)pyridinyl, cyanoethylpiperazinylpyridinyl, trifluoroethylpiperazinylpyridinyl, methylsulphonylpiperazinylpyridinyl,
methylsulphonylethylpiperazinylpyridinyl, oxopiperazinylpyridinyl, acetylpiperazinyl- pyridinyl, (tert-butoxycarbonylpiperazinyl)(methyl)pyridinyl, carboxymethylpiperazinyl- pyridinyl, carboxyethylpiperazinylpyridinyl, ethoxycarbonylmethylpiperazinylpyridinyl, ethoxycarbonylethylpiperazinylpyridinyl, morpholinylpyridinyl, thiomorpholinyl- pyridinyl, oxothiomorpholinylpyridinyl, dioxothiomorpholinylpyridinyl, oxodiazepanyl- pyridinyl, hydroxypyrrolidinylpyrimidinyl, (methyl)(tetrahydropyranyl)pyrimidinyl, (methyl)(piperidinyl)pyrimidinyl, (methyl)(methylsulphonylpiperidinyl)pyrimidinyl, piperazinylpyrimidinyl, methylsulphonylpiperazinylpyrimidinyl, oxopiperazinyl- pyrimidinyl, tert-butoxycarbonylpiperazinylpyrimidinyl, morpholinylpyrimidinyl, thiomorpholinylpyrimidinyl, morpholinylmethylthienyl, morpholinylethylpyrazolyl, 2- oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6-azaspiro[3.4]octanylpyrimidinyl, 2-oxa- 6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7-azaspiro[3.5]nonanylpyrimidinyl.
Additional values include N-isopropylcarbonyl-N-methylaminomethyl, methylsulphinyl- phenyl, methylsulphonylphenyl, (methyl)(methylsulphonyl)phenyl, ethenylcarbonyl- aminophenyl, tert-butoxycarbonylaminophenyl, phenylcarbonylphenyl, aminosulphonyl- phenyl, isopropylcarbonylpiperidinyl, cyclobutylcarbonylpiperidinyl, methoxycarbonyl- piperidinyl, methylthienyl, dihydrothieno[3,4-£][l,4]dioxinyl, oxodihydropyrrolo[3,4-¾]- pyridinyl, hydroxyisopropylpyridinyl, methylsulphonylpyridinyl, (difluoromethyl)(oxo)- pyridinyl, (oxo)(trifluoromethyl)pyridinyl, (methoxy)(oxo)pyridinyl, acetylamino- pyridinyl, bis(ethenylcarbonyl)aminopyridinyl, N-methyl-N-(methylsulphonyl)amino- pyridinyl, formylpyridinyl, aminocarbonylpyridinyl, (aminocarbonyl)(methyl)pyridinyl, methylaminocarbonylpyridinyl, hydroxyethylaminocarbonylpyridinyl, dimethylamino- carbonylpyridinyl, (isopropyl)(methyl)pyrimidinyl, (isobutyl)(methyl)pyrimidinyl, hydroxyisopropylpyrimidinyl, (methoxymethyl)(methyl)pyrimidinyl, (methoxyethyl)- (methyl)pyrimidinyl, methylsulphonylpyrimidinyl, dioxopyrimidinyl, ethylamino- pyrimidinyl, hydroxyethylaminopyrimidinyl, hydroxypropylaminopyrimidinyl,
(hydroxy)(methyl)propylaminopyrimidinyl, (hydroxy)(methoxy)(methyl)propylamino- pyrimidinyl, (hydroxy)(methylthio)butylaminopyrimidinyl, dimethylaminoethylamino- pyrimidinyl, (dimethylamino)(methyl)propylaminopyrimidinyl, N-(dimethylaminoethyl)- N-(hydroxyethyl)aminopyrimidinyl, hydroxymethylcyclopentylaminopyrimidinyl, hydroxycyclobutylmethylaminopyrimidinyl, (cyclopropyl)(hydroxy)propylamino- pyrimidinyl, morpholinylethylaminopyrimidinyl, oxopyrrolidinylmethylamino- pyrimidinyl, ethyloxadiazolylaminopyrimidinyl, methylthiadiazolylaminopyrimidinyl, thiazolylmethylaminopyrimidinyl, thiazolylethylaminopyrimidinyl, pyrimidinylmethyl- aminopyrimidinyl, methylpyrazolylmethylaminopyrimidinyl, acetylaminopyrimidinyl, N- acetyl-N-methylaminopyrimidinyl, N-(carboxymethyl)-N-methylaminopyrimidinyl, N- (carboxyethyl)-N-methylaminopyrimidinyl, methoxycarbonylethylaminopyrimidinyl, N- methyl-N-(methylsulphonyl)aminopyrimidinyl, pyrazinyl, triazolylmethyl, methyl- pyridinylmethyl, methoxypyridinylmethyl, piperazinylphenyl, morpholinylmethylphenyl, (cyclopropyl)(methyl)pyrimidinyl, hydroxycyclobutylpyrimidinyl, (cyclopentyl)(methyl)- pyrimidinyl, carboxycyclohexylpyrimidinyl, carboxycyclohexenylpyrimidinyl, carboxy- bicyclo[3.1.0]hexanylpyrimidinyl, oxopyrrolidinylpyridinyl, dioxoisothiazolidinyl- pyridinyl, oxoimidazolidinylpyridinyl, (hydroxy)(methyl)piperidinylpyridinyl, (chloro)- (piperazinyl)pyridinyl, difluoroethylpiperazinylpyridinyl, (methyl)(oxopiperazinyl)- pyridinyl, (methyl)(morpholinyl)pyridinyl, oxomorpholinylpyridinyl, (methyl)- (thiomorpholinyl)pyridinyl, (methyl)(oxothiomorpholinyl)pyridinyl, hydroxyoxetanyl- pyrimidinyl, hydroxyazetidinylpyrimidinyl, hydroxymethylazetidinylpyrimidinyl, (tert- butoxycarbonyl)(hydroxy)azetidinylpyrimidinyl, (methyl)(tetrahydrofuranyl)pyrimidinyl, hydroxymethylpyrrolidinylpyrimidinyl, methoxymethylpyrrolidinylpyrimidinyl, oxo- pyrrolidinylpyrimidinyl, (methyl)(oxo)pyrrolidinylpyrimidinyl, dimethylamino- pyrrolidinylpyrimidinyl, dioxoisothiazolidinylpyrimidinyl, hydroxytetrahydropyranyl- pyrimidinyl, hydroxypiperidinylpyrimidinyl, hydroxymethylpiperidinylpyrimidinyl, methoxypiperidinylpyrimidinyl, oxopiperidinylpyrimidinyl, carboxypiperidinyl- pyrimidinyl, (carboxy)(methyl)piperidinylpyrimidinyl, (amino)(carboxy)piperidinyl- pyrimidinyl, (ethoxycarbonyl)(methyl)piperidinylpyrimidinyl, aminocarbonylpiperidinyl- pyrimidinyl, hydroxyethylpiperazinylpyrimidinyl, (methyl)(oxopiperazinyl)pyrimidinyl, methylmorpholinylpyrimidinyl, oxomorpholinylpyrimidinyl, dioxothiomorpholinyl- pyrimidinyl, hydroxymethylazetidinylcarbonylpyridinyl, piperazinylcarbonylpyridinyl, methylpiperazinylcarbonylpyridinyl, morpholinylcarbonylpyridinyl, thiomorpholinyl- carbonylpyridinyl, dioxothiomorpholinylcarbonylpyridinyl, (methyl)(morpholinyl- methyl)pyrimidinyl, carboxy-3-azabicyclo[3.1.0]hexanylpyrimidinyl, carboxy-3- azabicyclo[4.1.0]heptanylpyrimidinyl, carboxy-3-azabicyclo[3.2.1 Joctanylpyrimidinyl, methoxycarbonyl-3-azabicyclo[3.2.1]octanylpyrimidinyl, oxo-2-oxa-6-azaspiro[3.4]- octanylpyridinyl, difluoro-5-azaspiro[2.4]heptanylpyrimidinyl and 7-oxa-2-azaspiro- [3.5]nonanylpyrimidinyl.
Selected values of R11 include bromo, cyano, ethoxycarbonylethyl, chlorophenyl, hydroxyphenyl, acetylphenyl, aminocarbonylphenyl, oxopiperidinyl, methylsulphonyl- piperazinyl, morpholinyl, tert-butoxycarbonyl-l,2,3,6-tetrahydropyridinyl, benzofuryl, thienyl, indolyl, pyrazolyl, methylpyrazolyl, dimethylpyrazolyl, methylindazolyl, dimethylisoxazolyl, methylimidazolyl, pyridinyl, fluoropyridinyl, cyanopyridinyl, methylpyridinyl, (cyano)(methyl)pyridinyl, dimethylpyridinyl, trifluoromethylpyridinyl, ethenylpyridinyl, methoxypyridinyl, (methoxy)(methyl)pyridinyl, isopropoxypyridinyl, trifluoroethoxypyridinyl, (methyl)(trifluoroethoxy)pyridinyl, oxopyridinyl, (methyl)- (oxo)pyridinyl, (dimethyl)(oxo)pyridinyl, aminopyridinyl, dimethylaminopyridinyl, methoxyethylaminopyridinyl, N-(hydroxyethyl)-N-(methyl)aminopyridinyl, carboxy- pyridinyl, quinolinyl, hydroxypyridazinyl, pyrimidinyl, methoxypyrimidinyl, oxo- pyrimidinyl, aminopyrimidinyl, dimethylaminopyrimidinyl, methoxyethylamino- pyrimidinyl, hydroxypyrazinyl, pyrrolidinylmethylphenyl, piperazinylmethylphenyl, pyridinylpiperazinyl, pyrrolidinylpyridinyl, hydroxypyrrolidinylpyridinyl, piperidinyl- pyridinyl, acetylpiperidinylpyridinyl, piperazinylpyridinyl, (methyl)(piperazinyl)- pyridinyl, cyanoethylpiperazinylpyridinyl, trifluoroethylpiperazinylpyridinyl,
methylsulphonylpiperazinylpyridinyl, methylsulphonylethylpiperazinylpyridinyl, oxopiperazinylpyridinyl, acetylpiperazinylpyridinyl, (tert-butoxycarbonylpiperazinyl)- (methyl)pyridinyl, carboxymethylpiperazinylpyridinyl, carboxyethylpiperazinylpyridinyl, ethoxycarbonylmethylpiperazinylpyridinyl, ethoxycarbonylethylpiperazinylpyridinyl, morpholinylpyridinyl, thiomorpholinylpyridinyl, oxothiomorpholinylpyridinyl, dioxo- thiomorpholinylpyridinyl, oxodiazepanylpyridinyl, hydroxypyrrolidinylpyrimidinyl, piperazinylpyrimidinyl, methylsulphonylpiperazinylpyrimidinyl, oxopiperazinyl- pyrimidinyl, tert-butoxycarbonylpiperazinylpyrimidinyl, morpholinylpyrimidinyl, thiomorpholinylpyrimidinyl, morpholinylmethylthienyl, morpholinylethylpyrazolyl, 2- oxa-6-azaspiro[3.3]heptanylpyrimidinyl, 2-oxa-6-azaspiro[3.4]octanylpyrimidinyl, 2-oxa- 6-azaspiro[3.5]nonanylpyrimidinyl and 2-oxa-7-azaspiro[3.5]nonanylpyrimidinyl.
Typical examples of optional substituents on R12 include C2_6 alkoxycarbonyl. Typical examples of particular substituents on R12 include ethoxycarbonyl.
In a first embodiment, R12 represents hydrogen. In a second embodiment, R12 represents halogen. In one aspect of that embodiment, R12 represents fluoro. In another aspect of that embodiment, R12 represents chloro. In a third embodiment, R12 represents trifluoromethyl. In a fourth embodiment, R12 represents optionally substituted Ci_6 alkyl. In one aspect of that embodiment, R12 represents unsubstituted methyl. In another aspect of that embodiment, R12 represents unsubstituted ethyl. In a further aspect of that embodiment, R12 represents monosubstituted methyl or monosubstituted ethyl.
Typical values of R12 include hydrogen, fluoro, chloro, trifluoromethyl, methyl and ethoxycarbonylethyl.
Suitable values of R12 include hydrogen, fluoro, chloro, trifluoromethyl and methyl.
Typically, R15 and R16 may independently represent hydrogen, fluoro, chloro, bromo, cyano, nitro, methyl, isopropyl, trifluoromethyl, hydroxy, methoxy, difluoro- methoxy, trifluoromethoxy, methylthio, methylsulfmyl, methylsulfonyl, amino, methyl- amino, tert-butylamino, dimethylamino, phenylamino, acetylamino, methylsulfonylamino, formyl, acetyl, cyclopropylcarbonyl, azetidinylcarbonyl, pyrrolidinylcarbonyl, piperidinyl- carbonyl, piperazinylcarbonyl, morpholinylcarbonyl, carboxy, methoxycarbonyl, amino- carbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminosulfonyl, methylamino- sulfonyl and dimethylaminosulfonyl.
Typical values of R15 include hydrogen, halogen, Ci_6 alkyl, trifluoromethyl, Ci_6 alkoxy, difluoromethoxy and trifluoromethoxy.
In a first embodiment, R15 represents hydrogen. In a second embodiment, R15 represents halogen. In a first aspect of that embodiment, R15 represents fluoro. In a second aspect of that embodiment, R15 represents chloro. In a third embodiment, R15 represents Ci_6 alkyl. In one aspect of that embodiment, R15 represents methyl. In a fourth embodiment, R15 represents trifluoromethyl. In a fifth embodiment, R15 represents Ci_6 alkoxy. In one aspect of that embodiment, R15 represents methoxy. In a sixth embodiment, R15 represents difluoromethoxy. In a seventh embodiment, R15 represents trifluoromethoxy.
Selected values of R15 include hydrogen, fluoro, chloro, methyl, trifluoromethyl, methoxy, difluoromethoxy and trifluoromethoxy.
Typical values of R16 include hydrogen, halogen, Ci_6 alkyl, trifluoromethyl, difluoromethoxy and amino.
In a first embodiment, R16 represents hydrogen. In a second embodiment, R16 represents halogen. In a first aspect of that embodiment, R16 represents fluoro. In a second aspect of that embodiment, R16 represents chloro. In a third embodiment, R16 represents Ci_6 alkyl. In one aspect of that embodiment, R16 represents methyl. In a fourth embodiment, R16 represents trifluoromethyl. In a fifth embodiment, R16 represents difluoromethoxy. In a seventh embodiment, R16 represents amino.
Selected values of R16 include hydrogen, fluoro, chloro, methyl, trifluoromethyl, difluoromethoxy and amino.
In a particular embodiment, R16 is attached at the /?ara-position of the phenyl ring relative to the integer R15.
A particular sub-group of the compounds of formula (IIA) above is represented by the compounds of formula (IIB) and N-oxides thereof, and pharmaceutically acceptable salts and solvates thereof, and glucuronide derivatives thereof, and co-crystals thereof:
Figure imgf000061_0001
(IIB) wherein
V represents C-R22 or N;
R21 represents hydrogen, halogen, cyano, Ci_6 alkyl, trifluoromethyl, C2_6 alkenyl,
C2_6 alkynyl, hydroxy, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, difluoromethoxy, trifluoro- methoxy, trifluoroethoxy, Ci_6 alkoxy(Ci_6)alkyl, Ci_6 alkylthio, Ci_6 alkylsulphonyl, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, hydroxy(Ci_6)alkylamino, (Ci_6)alkoxy(Ci_6)- alkylamino, [(C i _6)alkoxy] (hydroxy)(C i _6)alkylamino, N-[(C i _6)alkyl] -N- [hydroxy(C i_6)- alkyljamino, [(Ci_6)alkylthio](hydroxy)(Ci_6)alkylamino, di(Ci_6)alkylamino(Ci_6)alkyl- amino, N-[di(Ci_6)alkylamino(Ci_6)alkyl]-N-[hydroxy(Ci_6)alkyl]amino, hydroxy(Ci_6)- alkyl(C3-7)cycloalkylamino, (hydroxy)[(C3-7)cycloalkyl(Ci_6)alkyl]amino, (C3-7)- heterocycloalkyl(Ci_6)alkylamino, oxo(C3_7)heterocycloalkyl(Ci_6)alkylamino, (Ci_6)alkyl- heteroarylamino, heteroaryl(Ci_6)alkylamino, (Ci_6)alkylheteroaryl(Ci_6)alkylamino, C2_6 alkylcarbonylamino, N-[(Ci_6)alkyl]-N-[(C2_6)alkylcarbonyl]amino, bis[(C3_6)alkenyl- carbonyljamino, N-[carboxy(Ci_6)alkyl]-N-[(Ci_6)alkyl]amino, C2_6 alkoxy carbonylamino, C2_6 alkoxycarbonyl(Ci_6)alkylamino, Ci_6 alkylsulphonylamino, N-[(Ci_6)alkyl]-N-[(Ci_6)- alkylsulphonyl] amino, formyl, C2_6 alkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkylaminocarbonyl, hydroxy(Ci_6)alkylaminocarbonyl, di(Ci_6)alkyl- aminocarbonyl, aminocarbonyl(Ci_6)alkyl, aminosulphonyl, Ci_6 alkylaminosulphonyl or di(Ci_6)alkylaminosulphonyl; or R21 represents (C3_7)cycloalkyl, (C3_7)cycloalkyl(Ci_6)- alkyl, (C4_7)cycloalkenyl, (C4_9)bicycloalkyl, (C3_7)heterocycloalkyl, (C3_7)- heterocycloalkyl(Ci_6)alkyl, (C3_7)heterocycloalkenyl, (C4_9)heterobicycloalkyl or
(C4_9)spiroheterocycloalkyl, any of which groups may be optionally substituted by one or more substituents;
R22 represents hydrogen, halogen or Ci_6 alkyl;
R23 represents hydrogen or Ci_6 alkyl; and
E, Q, Z, R12, R15 and R16 are as defined above. The present invention also provides a compound of formula (IIB) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a co-crystal thereof, wherein
R21 represents hydrogen, halogen, cyano, Ci_6 alkyl, trifluoromethyl, C2_6 alkenyl, C2_6 alkynyl, hydroxy, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, difluoromethoxy, trifluoro- methoxy, trifluoroethoxy, Ci_6 alkylthio, Ci_6 alkylsulphonyl, amino, Ci_6 alkylamino, di(C i _6)alkylamino, (C i _6)alkoxy(C i _6)alkylamino, N-[(C i _6)alkyl] -N- [hydro xy(C i _6)alkyl] - amino, C2_6 alkylcarbonylamino, C2_6 alkoxycarbonylamino, Ci_6 alkylsulphonylamino, formyl, C2_6 alkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkyl- aminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminocarbonyl(Ci_6)alkyl, aminosulphonyl, Ci_6 alkylaminosulphonyl or di(Ci_6)alkylaminosulphonyl; or R21 represents
(C3_7)cycloalkyl, (C3_7)cycloalkyl(Ci_6)alkyl, (C4-7)cycloalkenyl, (C3_7)heterocycloalkyl, (C3_7)heterocycloalkenyl, (C4_9)heterobicycloalkyl or (C4_9)spiroheterocycloalkyl, any of which groups may be optionally substituted by one or more substituents;
R12 represents hydrogen; and
E, Q, Z, V, R15, R16 and R23 are as defined above.
The present invention also provides a compound of formula (IIB) as depicted above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, wherein
V represents CH or N;
R21 represents hydrogen, halogen, cyano, Ci_6 alkyl, trifluoromethyl, C2_6 alkenyl, C2_6 alkynyl, hydroxy, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_6 alkylthio, Ci_6 alkylsulphonyl, amino, Ci_6 alkylamino, di(Ci_6)alkylamino,
(C i _6)alkoxy(C i _6)alkylamino, N- [(C i _6)alkyl] -N-[hydroxy(C i _6)alkyl]amino, C2_6 alkylcarbonylamino, C2_6 alkoxycarbonylamino, Ci_6 alkylsulphonylamino, formyl, C2_6 alkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkyl aminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl, Ci_6 alkylaminosulphonyl or di(Ci_6)alkyl- aminosulphonyl; or R21 represents (C4_7)cycloalkenyl, (C3_7)heterocycloalkyl,
(C3_7)heterocycloalkenyl, (C4_9)heterobicycloalkyl or (C4_9)spiroheterocycloalkyl, any of which groups may be optionally substituted by one or more substituents;
R12 and R23 each represents hydrogen; and
E, O, Z, R15 and R16 are as defined above.
In one embodiment, V represents C-R22. In another embodiment, V represents N. Suitably, R21 represents hydrogen, halogen, cyano, Ci_6 alkyl, trifluoromethyl, C2-6 alkenyl, hydroxy, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, trifluoroethoxy, amino,
di(C i _6)alkylamino, (C i _6)alkoxy(C i _6)alkylamino, N-[(C i _6)alkyl] -N- [hydro xy(C i _6)alkyl] - amino, carboxy or aminocarbonyl(Ci_6)alkyl; or R21 represents (C3_7)cycloalkyl, (C3_7)cycloalkyl(Ci_6)alkyl, (C3_7)heterocycloalkyl or (C4_9)spiroheterocycloalkyl, any of which groups may be optionally substituted by one or more substituents. Additionally, R21 may represent Ci_6 alkoxy(Ci_6)alkyl, Ci_6 alkylsulphonyl, Ci_6 alkylamino, hydroxy(Ci_6)- alkylamino, [(Ci_6)alkoxy](hydroxy)(Ci_6)alkylamino, [(Ci_6)alkylthio](hydroxy)(Ci_6)- alkylamino, di(C i _6)alkylamino(C i _6)alkylamino, N-[di(C i _6)alkylamino(C i _6)alkyl] -N- [hydroxy(Ci_6)alkyl]amino, hydroxy(Ci_6)alkyl(C3_7)cycloalkylamino, (hydroxy) [(C3_7)- cycloalkyl(Ci_6)alkyl]amino, (C3-7)heterocycloalkyl(Ci_6)alkylamino, oxo(C3_7)- heterocycloalkyl(Ci_6)alkylamino, (Ci_6)alkylheteroarylamino, heteroaryl(Ci_6)alkylamino, (Ci_6)alkylheteroaryl(Ci_6)alkylamino, C2_6 alkylcarbonylamino, N-[(Ci_6)alkyl]-N-[(C2_6)- alkylcarbonyl] amino, bis[(C3_6)alkenylcarbonyl] amino, N- [carboxy(C i _6)alkyl] -N-[(C i _6)- alkyljamino, C2_6 alkoxycarbonyl(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[(Ci_6)alkyl- sulphonyl] amino, aminocarbonyl, Ci_6 alkylaminocarbonyl, hydroxy(Ci_6)alkylamino- carbonyl or di(Ci_6)alkylaminocarbonyl; or R21 may represent (C4_7)cycloalkenyl,
(C4_9)bicycloalkyl, (C4_9)heterobicycloalkyl or (C3-7)heterocycloalkyl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents.
Typically, R21 represents hydrogen, halogen, cyano, Ci_6 alkyl, trifluoromethyl,
C2_6 alkenyl, hydroxy, Ci_6 alkoxy, trifluoroethoxy, amino, di(Ci_6)alkylamino, (Ci_6)- alkoxy(Ci_6)alkylamino, N-[(Ci_6)alkyl]-N-[hydroxy(Ci_6)alkyl]amino or carboxy; or R21 represents (C3_7)heterocycloalkyl or (C4_9)spiroheterocycloalkyl, either of which groups may be optionally substituted by one or more substituents.
Where R21 represents an optionally substituted (C3_7)cycloalkyl group, typical values include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl, any of which groups may be optionally substituted by one or more substituents.
Where R21 represents an optionally substituted (C3_7)cycloalkyl(Ci_6)alkyl group, typical values include cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl and cyclohexylmethyl, any of which groups may be optionally substituted by one or more substituents. Where R21 represents an optionally substituted (C4_7)cycloalkenyl group, typical values include cyclobutenyl, cyclopentenyl, cyclohexenyl and cycloheptenyl, any of which groups may be optionally substituted by one or more substituents.
Where R21 represents an optionally substituted (C4_9)bicycloalkyl group, a typical value is bicyclo[3.1.0]hexanyl, which group may be optionally substituted by one or more substituents.
Where R21 represents an optionally substituted (C3_7)heterocycloalkyl group, typical values include oxetanyl, azetidinyl, tetrahydrofuranyl, pyrrolidinyl,
isothiazolidinyl, imidazolidinyl, tetrahydropyranyl, piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl and diazepanyl, any of which groups may be optionally substituted by one or more substituents.
Where R21 represents an optionally substituted (C3-7)heterocycloalkyl(Ci_6)alkyl group, typical values include azetidinylmethyl, piperazinylmethyl, morpholinylmethyl and thiomorpholinylmethyl, any of which groups may be optionally substituted by one or more substituents.
Where R21 represents an optionally substituted (C3_7)heterocycloalkenyl group, a typical value is optionally substituted 1,2,3,6-tetrahydropyridinyl.
Where R21 represents an optionally substituted (C4_9)heterobicycloalkyl group, typical values include quinuclidinyl, 5-aza-2-oxabicyclo[2.2.1]heptanyl, 3-azabicyclo- [3.1.0]hexanyl, 3-azabicyclo[4.1.0]heptanyl, 5-aza-2-oxabicyclo[2.2.2]octanyl, 3- azabicyclo[3.2.1]octanyl, 8-azabicyclo[3.2.1]octanyl, 3,8-diazabicyclo[3.2.1]octanyl and 3,9-diazabicyclo[4.2.1]nonanyl, any of which groups may be optionally substituted by one or more substituents.
Where R21 represents an optionally substituted (C4_9)spiroheterocycloalkyl group, typical values include 5-azaspiro[2.4]heptanyl, 2-oxa-6-azaspiro[3.3]heptanyl, 2-oxa-6- azaspiro[3.4]octanyl, 2-oxa-6-azaspiro[3.5]nonanyl, 2-oxa-7-azaspiro[3.5]nonanyl and 7- oxa-2-azaspiro[3.5]nonanyl, any of which groups may be optionally substituted by one or more substituents.
Examples of optional substituents which may be present on R21 include one, two or three substituents independently selected from halogen, cyano, cyano(Ci_6)alkyl, Ci_6 alkyl, trifluoromethyl, trifluoroethyl, C2_6 alkenyl, hydroxy, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_6 alkylthio, Ci_6 alkylsulphonyl, (Ci_6)alkyl- sulphonyl(Ci_6)alkyl, oxo, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, C2_6 alkylcarbonyl- amino, C2_6 alkoxycarbonylamino, Ci_6 alkylsulphonylamino, formyl, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety Ω as defined herein, aminocarbonyl, Ci_6 alkyl- aminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl and di(Ci_6)alkylamino- sulphonyl. An additional example is -(Ci_6)alkyl-Q, in which Ω is as defined herein.
Additional examples include difluoroethyl, hydroxy(Ci_6)alkyl and Ci_6 alkoxy(Ci_6)alkyl.
Suitable examples of optional substituents on R21 include one, two or three substituents independently selected from fluoro, chloro, bromo, cyano, cyanomethyl, methyl, ethyl, trifluoromethyl, trifluoroethyl, ethenyl, hydroxy, methoxy, ethoxy, difluoro- methoxy, trifluoromethoxy, trifluoro ethoxy, methylthio, methylsulphonyl, methyl- sulphonylmethyl, oxo, amino, methylamino, dimethylamino, acetylamino, methoxy- carbonylamino, ethoxy carbonylamino, tert-butoxycarbonylamino, methylsulphonylamino, formyl, acetyl, carboxy, carboxymethyl, carboxyethyl, methoxycarbonyl, ethoxycarbonyl, tert-butoxycarbonyl, methoxycarbonylmethyl, ethoxycarbonylmethyl, aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, aminosulphonyl, methylaminosulphonyl and dimethylaminosulphonyl. Additional examples include difluoroethyl, hydroxymethyl, hydroxyethyl and methoxymethyl.
Selected examples of optional substituents on R21 include one, two or three substituents independently selected from cyano(Ci_6)alkyl, trifluoroethyl, hydroxy, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, oxo, C2_6 alkylcarbonyl, carboxy-
(Ci_6)alkyl, C2_6 alkoxycarbonyl and C2_6 alkoxycarbonyl(Ci_6)alkyl. Additional examples include halogen, Ci_6 alkyl, difluoroethyl, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, Ci_6 alkoxy- (Ci_6)alkyl, amino, di(Ci_6)alkylamino, carboxy and aminocarbonyl.
Examples of particular substituents on R21 include cyanoethyl, trifluoroethyl, hydroxy, methylsulphonyl, methylsulphonylethyl, oxo, acetyl, carboxymethyl, carboxyethyl, tert-butoxycarbonyl, ethoxycarbonylmethyl and ethoxy carbonylethyl. Additional examples include fluoro, methyl, difluoroethyl, hydroxymethyl, hydroxyethyl, methoxy, methoxymethyl, amino, dimethylamino, carboxy, methoxycarbonyl and aminocarbonyl.
Suitably, R21 represents hydrogen, fluoro, cyano, methyl, ethyl, trifluoromethyl, ethenyl, hydroxy, hydroxyethyl, hydroxyisopropyl, methoxy, isopropoxy, trifluoroethoxy, amino, dimethylamino, methoxy ethylamino, N-(hydroxyethyl)-N-(methyl)amino, carboxy, aminocarbonylmethyl, cyclobutyl, cyclopropylmethyl, pyrrolidinyl, hydroxypyrrolidinyl, tetrahydropyranyl, piperidinyl, acetylpiperidinyl, methylsulphonylpiperidinyl, piperazinyl, cyanoethylpiperazinyl, trifluoroethylpiperazinyl, methylsulphonylpiperazinyl,
methylsulphonylethylpiperazinyl, oxopiperazinyl, acetylpiperazinyl, tert-butoxycarbonyl- piperazinyl, carboxymethylpiperazinyl, carboxyethylpiperazinyl, ethoxycarbonylmethyl- piperazinyl, ethoxycarbonylethylpiperazinyl, morpholinyl, thiomorpholinyl,
oxothiomorpholinyl, dioxothiomorpholinyl, oxodiazepanyl, 2-oxa-6-azaspiro[3.3]- heptanyl, 2-oxa-6-azaspiro[3.4]octanyl, 2-oxa-6-azaspiro[3.5]nonanyl or 2-oxa-7- azaspiro[3.5]nonanyl. Additionally, R21 may represent isopropyl, isobutyl, methoxy- methyl, methoxyethyl, methylsulphonyl, ethylamino, hydroxyethylamino, hydroxypropyl- amino, (hydroxy)(methyl)propylamino, (hydroxy)(methoxy)(methyl)propylamino, (hydroxy)(methylthio)butylamino, dimethylaminoethylamino, (dimethylamino)(methyl)- propylamino, N-(dimethylaminoethyl)-N-(hydroxyethyl)amino, hydroxymethyl- cyclopentylamino, hydroxycyclobutylmethylamino, (cyclopropyl)(hydroxy)propylamino, morpholinylethylamino, oxopyrrolidinylmethylamino, ethyloxadiazolylammo, methyl- thiadiazolylamino, thiazolylmethylamino, thiazolylethylamino, pyrimidinylmethylamino, methylpyrazolylmethylamino, acetylamino, N-acetyl-N-methylamino, bis(ethenyl- carbonyl)amino, N-(carboxymethyl)-N-methylamino, N-(carboxyethyl)-N-methylamino, methoxycarbonylethylamino, N-methyl-N-(methylsulphonyl)amino, aminocarbonyl, methylaminocarbonyl, hydroxyethylammocarbonyl, dimethylammocarbonyl, cyclopropyl, hydroxycyclobutyl, cyclopentyl, carboxycyclohexyl, carboxycyclohexenyl, carboxy- bicyclo[3.1.0]hexanyl, hydroxyoxetanyl, hydroxyazetidinyl, hydroxymethylazetidinyl, (tert-butoxycarbonyl)(hydroxy)azetidinyl, tetrahydrofuranyl, hydroxymethylpyrrolidinyl, methoxymethylpyrrolidinyl, oxopyrrolidinyl, (methyl)(oxo)pyrrolidinyl, dimethylamino- pyrrolidinyl, dioxoisothiazolidinyl, oxoimidazolidinyl, hydroxytetrahydropyranyl, hydroxypiperidinyl, hydroxymethylpiperidinyl, methoxypiperidinyl, oxopiperidinyl, carboxypiperidinyl, (carboxy)(methyl)piperidinyl, (amino)(carboxy)piperidinyl,
(ethoxycarbonyl)(methyl)piperidinyl, aminocarbonylpiperidinyl, difluoroethylpiperazinyl, hydroxyethylpiperazinyl, (methyl)(oxo)piperazinyl, methylmorpholinyl, oxomorpholinyl, hydroxymethylazetidinylcarbonyl, piperazinylcarbonyl, methylpiperazinylcarbonyl, morpholinylmethyl, morpholinylcarbonyl, thiomorpholinylcarbonyl, dioxo- thiomorpholinylcarbonyl, carboxy-3-azabicyclo[3.1.0]hexanyl, methoxycarbonyl-3- azabicyclo[3.1.0]hexanyl, carboxy-3-azabicyclo[4.1.0]heptanyl, carboxy-3-azabicyclo- [3.2.1]octanyl, difluoro-5-azaspiro[2.4]heptanyl, 2-oxa-6-azaspiro[3.4]octanyl or 7-oxa-2- azaspiro[3.5]nonanyl. Typically, R21 represents hydrogen, fluoro, cyano, methyl, trifluoromethyl, ethenyl, hydroxy, methoxy, isopropoxy, trifluoroethoxy, amino, dimethylamino, methoxyethyl- amino, N-(hydroxyethyl)-N-(methyl)amino, carboxy, pyrrolidinyl, hydroxypyrrolidinyl, piperidinyl, acetylpiperidinyl, piperazinyl, cyanoethylpiperazinyl, trifluoroethyl- piperazinyl, methylsulphonylpiperazinyl, methylsulphonylethylpiperazinyl, oxo- piperazinyl, acetylpiperazinyl, tert-butoxycarbonylpiperazinyl, carboxymethylpiperazinyl, carboxyethylpiperazinyl, ethoxycarbonylmethylpiperazinyl, ethoxycarbonylethyl- piperazinyl, morpholinyl, thiomorpholinyl, oxothiomorpholinyl, dioxothiomorpholinyl, oxodiazepanyl, 2-oxa-6-azaspiro[3.3]heptanyl, 2-oxa-6-azaspiro[3.4]octanyl, 2-oxa-6-aza- spiro[3.5]nonanyl or 2-oxa-7-azaspiro[3.5]nonanyl.
In a particular embodiment, R21 represents hydroxy(Ci_6)alkyl. In one aspect of that embodiment, R21 represents hydroxyisopropyl, especially 2-hydroxyprop-2-yl.
Generally, R22 represents hydrogen or Ci_6 alkyl.
Suitably, R22 represents hydrogen, chloro or methyl.
Typically, R22 represents hydrogen or methyl.
In one embodiment, R22 represents hydrogen. In another embodiment, R22 represents Ci_6 alkyl, especially methyl. In a further embodiment, R22 represents halogen, especially chloro.
Typically, R23 represents hydrogen or methyl.
In one embodiment, R23 represents hydrogen. In another embodiment, R23 represents Ci_6 alkyl, especially methyl.
Particular sub-groups of the compounds of formula (IIB) above are represented by the compounds of formula (IIC), (IID) and (HE) and N-oxides thereof, and
pharmaceutically acceptable salts and solvates thereof, and glucuronide derivatives thereof, and co-crystals thereof:
(IIC)
Figure imgf000067_0001
Figure imgf000068_0001
Figure imgf000068_0002
T represents -CH2- or -CH2CH2-;
W represents O, S, S(O), S(0)2, N(R31) or C(R32)(R33);
R31 represents hydrogen, hydroxy(Ci_6)alkyl, cyano(Ci_6)alkyl, Ci_6 alkyl, trifluoro- methyl, difluoroethyl, trifluoro ethyl, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, formyl, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety Ω, -(Ci_6)alkyl-Q, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl or di(Ci_6)alkylaminosulphonyl;
R32 represents halogen, Ci_6 alkoxy, carboxy, carboxy(Ci_6)alkyl, C2_6
alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, aminocarbonyl, a carboxylic acid isostere or prodrug moiety Ω, or -(Ci_6)alkyl-Q;
R33 represents hydrogen, halogen, Ci_6 alkyl or amino; and
V, E, Q, Z, R12, R15, R16, R23 and Ω are as defined above.
In a first embodiment, T represents -CH2-. In a second embodiment, T represents -CH2CH2-.
Typically, W represents O, S, S(O), S(0)2, N(R31) or CF2;
Suitably, W represents O, S, S(O), S(0)2 or N(R31). In a first embodiment, W represents O. In a second embodiment, W represents S. In a third embodiment, W represents S(O). In a fourth embodiment, W represents S(0)2. In a fifth embodiment, W represents N(R31). In a sixth embodiment, W represents C(R32)(R33). In one aspect of the sixth embodiment, W represents CF2.
Typically, R31 represents hydrogen, cyano(Ci_6)alkyl, Ci_6 alkyl, trifluoromethyl, trifluoro ethyl, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, formyl, C2_6 alkyl- carbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl- (Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety Ω, -(Ci_6)alkyl-Q, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl or di(Ci_6)alkyl- aminosulphonyl .
Suitably, R31 represents hydrogen, cyano(Ci_6)alkyl, trifluoroethyl, Ci_6
alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, C2_6 alkylcarbonyl, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl or C2_6 alkoxycarbonyl(Ci_6)alkyl. Additionally, R31 may represent hydroxy(Ci_6)alkyl or difluoroethyl.
Particular values of R31 include hydrogen, cyanoethyl, methyl, ethyl, isopropyl, trifluoromethyl, trifluoroethyl, methylsulphonyl, methylsulphonylethyl, formyl, acetyl, carboxy, carboxymethyl, carboxyethyl, methoxycarbonyl, ethoxycarbonyl, tert-butoxy- carbonyl, ethoxycarbonylmethyl, ethoxycarbonylethyl, aminocarbonyl, methylamino- carbonyl, dimethylaminocarbonyl, aminosulphonyl, methylaminosulphonyl and dimethylaminosulphonyl. Additional values include hydroxyethyl and difluoroethyl.
Selected values of R31 include hydrogen, cyanoethyl, trifluoroethyl, methylsulphonyl, methylsulphonylethyl, acetyl, carboxymethyl, carboxyethyl, tert-butoxy- carbonyl, ethoxycarbonylmethyl and ethoxycarbonylethyl. Additional values include hydroxyethyl and difluoroethyl.
Generally, R32 represents halogen, carboxy, carboxy(Ci_6)alkyl, C2_6
alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety Ω, or -(Ci_6)alkyl-Q.
Typically, R32 represents carboxy, C2_6 alkoxycarbonyl or tetrazolyl. Additionally, R32 may represent Ci_6 alkoxy or aminocarbonyl.
Typical values of R32 include fluoro, carboxy, carboxymethyl, carboxyethyl, methoxycarbonyl, ethoxycarbonyl, methoxycarbonylmethyl, methoxycarbonylethyl, ethoxycarbonylmethyl, ethoxycarbonylethyl, tetrazolyl, tetrazolylmethyl and
tetrazolylethyl. Additional values include methoxy and aminocarbonyl. Particular values of R include carboxy, methoxycarbonyl, ethoxycarbonyl and tetrazolyl. Additional values include methoxy and aminocarbonyl.
In a selected embodiment, R32 represents carboxy.
Generally, R33 represents hydrogen, halogen or Ci_6 alkyl.
Suitably, R33 represents hydrogen or Ci_6 alkyl.
In a first embodiment, R33 represents hydrogen. In a second embodiment, R33 represents halogen. In one aspect of that embodiment, R33 represents fluoro. In a third embodiment, R33 represents Ci_6 alkyl. In one aspect of that embodiment, R33 represents methyl. In a fourth embodiment, R33 represents amino.
Another sub-group of the compounds of formula (IIB) above is represented by the compounds of formula (IIF) and N-oxides thereof, and pharmaceutically acceptable salts and solvates thereof, and glucuronide derivatives thereof, and co-crystals thereof:
Figure imgf000070_0001
(IIF) wherein
R34 represents hydrogen, halogen, hydroxy, Ci_6 alkoxy, Ci_6 alkylthio, Ci_6 alkylsulphinyl, Ci_6 alkylsulphonyl, amino, Ci_6 alkylamino or di(Ci_6)alkylamino; and E, Q, Z, V, W, R12, R15, R16 and R23 are as defined above.
In a first embodiment, R34 represents hydrogen. In a second embodiment, R34 represents halogen. In one aspect of that embodiment, R34 represents fluoro. In a third embodiment, R34 represents hydroxy. In a fourth embodiment, R34 represents Ci_6 alkoxy, especially methoxy. In a fifth embodiment, R34 represents Ci_6 alkylthio, especially methylthio. In a sixth embodiment, R34 represents Ci_6 alkylsulphinyl, especially methylsulphinyl. In a seventh embodiment, R34 represents Ci_6 alkylsulphonyl, especially methylsulphonyl. In an eighth embodiment, R34 represents amino. In a ninth embodiment, R34 represents Ci_6 alkylamino, especially methylamino. In a tenth embodiment, R34 represents di(Ci_6)alkylamino, especially dimethylamino. Selected values of R include hydrogen, fluoro, hydroxy, methoxy, methylthio, methylsulphinyl, methylsulphonyl, amino, methylamino and dimethylamino.
Suitably, R34 represents hydrogen or hydroxy.
Further sub-groups of the compounds of formula (IIB) above are represented by the compounds of formula (IIG), (IIH), (IIJ), (IIK) and (IIL) and N-oxides thereof, and pharmaceutically acceptable salts and solvates thereof, and glucuronide derivatives thereof, and co-crystals thereof:
Figure imgf000071_0001
Figure imgf000072_0001
wherein
-M- represents -CH2- or -CH2CH2-; and
E, Q, Z, V, W, R12, R15, R16, R23 and R34 are as defined above.
In one embodiment, -M- represents -CH2-. In another embodiment, -M- represents -CH2CH2-.
Specific novel compounds in accordance with the present invention include each of the compounds whose preparation is described in accompanying Examples 2, 3A, 3B, 5- 531, 532-540, and 541-1105, and pharmaceutically acceptable salts and solvates thereof, and co-crystals thereof.
The compounds in accordance with the present invention are beneficial in the treatment and/or prevention of various human ailments. These include autoimmune and inflammatory disorders; neurological and neurodegenerative disorders; pain and nociceptive disorders; cardiovascular disorders; metabolic disorders; ocular disorders; and oncological disorders.
Inflammatory and autoimmune disorders include systemic autoimmune disorders, autoimmune endocrine disorders and organ-specific autoimmune disorders. Systemic autoimmune disorders include systemic lupus erythematosus (SLE), psoriasis, psoriatic arthropathy, vasculitis, polymyositis, scleroderma, multiple sclerosis, systemic sclerosis, ankylosing spondylitis, rheumatoid arthritis, non-specific inflammatory arthritis, juvenile inflammatory arthritis, juvenile idiopathic arthritis (including oligoarticular and polyarticular forms thereof), anaemia of chronic disease (ACD), Still's disease (juvenile and/or adult onset), Beliefs disease and Sjogren's syndrome. Autoimmune endocrine disorders include thyroiditis. Organ-specific autoimmune disorders include Addison's disease, haemolytic or pernicious anaemia, acute kidney injury (AKI; including cisplatin- induced AKI), diabetic nephropathy (DN), obstructive uropathy (including cisplatin- induced obstructive uropathy), glomerulonephritis (including Goodpasture's syndrome, immune complex -mediated glomerulonephritis and antineutrophil cytoplasmic antibodies (ANCA)-associated glomerulonephritis), lupus nephritis (LN), minimal change disease, Graves' disease, idiopathic thrombocytopenic purpura, inflammatory bowel disease (including Crohn's disease, ulcerative colitis, indeterminate colitis and pouchitis), pemphigus, atopic dermatitis, autoimmune hepatitis, primary biliary cirrhosis, autoimmune pneumonitis, autoimmune carditis, myasthenia gravis, spontaneous infertility,
osteoporosis, osteopenia, erosive bone disease, chondritis, cartilage degeneration and/or destruction, fibrosing disorders (including various forms of hepatic and pulmonary fibrosis), asthma, rhinitis, chronic obstructive pulmonary disease (COPD), respiratory distress syndrome, sepsis, fever, muscular dystrophy (including Duchenne muscular dystrophy) and organ transplant rejection (including kidney allograft rejection).
Neurological and neurodegenerative disorders include Alzheimer's disease, Parkinson's disease, Huntington's disease, ischaemia, stroke, amyotrophic lateral sclerosis, spinal cord injury, head trauma, seizures and epilepsy.
Cardiovascular disorders include thrombosis, cardiac hypertrophy, hypertension, irregular contractility of the heart (e.g. during heart failure), and sexual disorders
(including erectile dysfunction and female sexual dysfunction). Modulators of TNFa function may also be of use in the treatment and/or prevention of myocardial infarction (see J.J. Wu et al., JAMA, 2013, 309, 2043-2044).
Metabolic disorders include diabetes (including insulin-dependent diabetes mellitus and juvenile diabetes), dyslipidemia and metabolic syndrome.
Ocular disorders include retinopathy (including diabetic retinopathy, proliferative retinopathy, non-proliferative retinopathy and retinopathy of prematurity), macular oedema (including diabetic macular oedema), age-related macular degeneration (ARMD), vascularisation (including corneal vascularisation and neovascularisation), retinal vein occlusion, and various forms of uveitis and keratitis.
Oncological disorders, which may be acute or chronic, include proliferative disorders, especially cancer, and cancer-associated complications (including skeletal complications, cachexia and anaemia). Particular categories of cancer include
haemato logical malignancy (including leukaemia and lymphoma) and non-haemato logical malignancy (including solid tumour cancer, sarcoma, meningioma, glioblastoma multiforme, neuroblastoma, melanoma, gastric carcinoma and renal cell carcinoma).
Chronic leukaemia may be myeloid or lymphoid. Varieties of leukaemia include lymphoblastic T cell leukaemia, chronic myelogenous leukaemia (CML), chronic lymphocytic/lymphoid leukaemia (CLL), hairy-cell leukaemia, acute lymphoblastic leukaemia (ALL), acute myelogenous leukaemia (AML), myelodysplasia syndrome, chronic neutrophilic leukaemia, acute lymphoblastic T cell leukaemia, plasmacytoma, immunoblastic large cell leukaemia, mantle cell leukaemia, multiple myeloma, acute megakaryoblastic leukaemia, acute megakaryocytic leukaemia, promyelocytic leukaemia and erythroleukaemia. Varieties of lymphoma include malignant lymphoma, Hodgkin's lymphoma, non-Hodgkin's lymphoma, lymphoblastic T cell lymphoma, Burkitt's lymphoma, follicular lymphoma, MALT1 lymphoma and marginal zone lymphoma.
Varieties of non-haemato logical malignancy include cancer of the prostate, lung, breast, rectum, colon, lymph node, bladder, kidney, pancreas, liver, ovary, uterus, cervix, brain, skin, bone, stomach and muscle. Modulators of TNFa function may also be used to increase the safety of the potent anticancer effect of TNF (see F.V. Hauwermeiren et al., J. Clin. Invest., 2013, 123, 2590-2603).
The present invention also provides a pharmaceutical composition which comprises a compound in accordance with the invention as described above, or a pharmaceutically acceptable salt or solvate thereof, in association with one or more pharmaceutically acceptable carriers.
Pharmaceutical compositions according to the invention may take a form suitable for oral, buccal, parenteral, nasal, topical, ophthalmic or rectal administration, or a form suitable for administration by inhalation or insufflation.
For oral administration, the pharmaceutical compositions may take the form of, for example, tablets, lozenges or capsules prepared by conventional means with
pharmaceutically acceptable excipients such as binding agents (e.g. pregelatinised maize starch, polyvinylpyrrolidone or hydroxypropyl methyl cellulose); fillers (e.g. lactose, microcrystalline cellulose or calcium hydrogenphosphate); lubricants (e.g. magnesium stearate, talc or silica); disintegrants (e.g. potato starch or sodium glycollate); or wetting agents (e.g. sodium lauryl sulphate). The tablets may be coated by methods well known in the art. Liquid preparations for oral administration may take the form of, for example, solutions, syrups or suspensions, or they may be presented as a dry product for constitution with water or other suitable vehicle before use. Such liquid preparations may be prepared by conventional means with pharmaceutically acceptable additives such as suspending agents, emulsifying agents, non-aqueous vehicles or preservatives. The preparations may also contain buffer salts, flavouring agents, colouring agents or sweetening agents, as appropriate.
Preparations for oral administration may be suitably formulated to give controlled release of the active compound.
For buccal administration, the compositions may take the form of tablets or lozenges formulated in conventional manner.
The compounds of formula (I) may be formulated for parenteral administration by injection, e.g. by bolus injection or infusion. Formulations for injection may be presented in unit dosage form, e.g. in glass ampoules or multi-dose containers, e.g. glass vials. The compositions for injection may take such forms as suspensions, solutions or emulsions in oily or aqueous vehicles, and may contain formulatory agents such as suspending, stabilising, preserving and/or dispersing agents. Alternatively, the active ingredient may be in powder form for constitution with a suitable vehicle, e.g. sterile pyrogen-free water, before use.
In addition to the formulations described above, the compounds of formula (I) may also be formulated as a depot preparation. Such long-acting formulations may be administered by implantation or by intramuscular injection.
For nasal administration or administration by inhalation, the compounds according to the present invention may be conveniently delivered in the form of an aerosol spray presentation for pressurised packs or a nebuliser, with the use of a suitable propellant, e.g. dichlorodifluoromethane, fluorotrichloromethane, dichlorotetrafluoroethane, carbon dioxide or other suitable gas or mixture of gases.
The compositions may, if desired, be presented in a pack or dispenser device which may contain one or more unit dosage forms containing the active ingredient. The pack or dispensing device may be accompanied by instructions for administration.
For topical administration the compounds of use in the present invention may be conveniently formulated in a suitable ointment containing the active component suspended or dissolved in one or more pharmaceutically acceptable carriers. Particular carriers include, for example, mineral oil, liquid petroleum, propylene glycol, polyoxyethylene, polyoxypropylene, emulsifying wax and water. Alternatively, the compounds of use in the present invention may be formulated in a suitable lotion containing the active component suspended or dissolved in one or more pharmaceutically acceptable carriers. Particular carriers include, for example, mineral oil, sorbitan monostearate, polysorbate 60, cetyl esters wax, cetearyl alcohol, benzyl alcohol, 2-octyldodecanol and water.
For ophthalmic administration the compounds of use in the present invention may be conveniently formulated as micronized suspensions in isotonic, pH-adjusted sterile saline, either with or without a preservative such as a bactericidal or fungicidal agent, for example phenylmercuric nitrate, benzylalkonium chloride or chlorhexidine acetate.
Alternatively, for ophthalmic administration compounds may be formulated in an ointment such as petrolatum.
For rectal administration the compounds of use in the present invention may be conveniently formulated as suppositories. These can be prepared by mixing the active component with a suitable non-irritating excipient which is solid at room temperature but liquid at rectal temperature and so will melt in the rectum to release the active component. Such materials include, for example, cocoa butter, beeswax and polyethylene glycols.
The quantity of a compound of use in the invention required for the prophylaxis or treatment of a particular condition will vary depending on the compound chosen and the condition of the patient to be treated. In general, however, daily dosages may range from around 10 ng/kg to 1000 mg/kg, typically from 100 ng/kg to 100 mg/kg, e.g. around 0.01 mg/kg to 40 mg/kg body weight, for oral or buccal administration, from around 10 ng/kg to 50 mg/kg body weight for parenteral administration, and from around 0.05 mg to around 1000 mg, e.g. from around 0.5 mg to around 1000 mg, for nasal administration or administration by inhalation or insufflation.
If desired, a compound in accordance with the present invention may be coadministered with another pharmaceutically active agent, e.g. an anti-inflammatory molecule such as methotrexate or prednisolone.
The compounds of formula (I) above may be prepared by a process which comprises reacting a compound of formula Z-Q-C02H or a carboxylate salt thereof (e.g. a carboxylate salt with an alkali metal such as lithium, sodium or potassium) with a compound of formula (III):
Figure imgf000077_0001
(III) wherein E, Q, Y, Z, R1, R2 and R3 are as defined above.
The reaction may advantageously be performed in the presence of a peptide coupling reagent such as 0-(7-azabenzotriazol-l-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate (HATU), optionally in the presence of a suitable base, e.g. an organic base such as N,N-diisopropylethylamine. The reaction is conveniently effected at ambient or elevated temperature in a suitable solvent, e.g. N,N-dimethylformamide or a chlorinated solvent such as dichloromethane. The product thereby obtained is suitably treated with an acid, ideally an organic acid such as acetic acid, or a mineral acid such as hydrochloric acid, typically at an elevated temperature.
Alternatively, the reaction may conveniently be effected in the presence of a coupling reagent such as l-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC), typically at ambient temperature in a suitable solvent, e.g. a chlorinated solvent such as dichloromethane, in the presence of a suitable base, e.g. an organic base such as triethylamine.
Alternatively, the reaction may conveniently be effected at an elevated temperature in the presence of a mineral acid, e.g. hydrochloric acid.
Alternatively, the reaction may conveniently be effected at an elevated temperature in the presence of a lower alkanol, e.g. a Ci_4 alkanol such as methanol.
In an alternative procedure, the compounds of formula (I) above wherein E represents a covalent bond or an optionally substituted straight or branched Ci_4 alkylene chain may be prepared by a process which comprises reacting a compound of formula L'-E'-Y with a compound of formula (IV):
Figure imgf000078_0001
(IV) wherein Q, Y, Z, R1, R2 and R3 are as defined above, E1 represents a covalent bond or an optionally substituted straight or branched Ci_4 alkylene chain, and L1 represents a suitable leaving group.
The leaving group L1 is typically a halogen atom, e.g. chloro or bromo.
The reaction is conveniently effected at ambient or elevated temperature in a suitable solvent, e.g. N,N-dimethylformamide or a chlorinated solvent such as
dichloromethane. The reaction may be performed in the presence of a suitable base, e.g. an inorganic base such as potassium carbonate, cesium carbonate or sodium hydride.
The intermediates of formula (IV) above may be prepared by reacting a compound of formula Z-Q-C02H or a carboxylate salt thereof (e.g. a carboxylate salt with an alkali metal such as lithium, sodium or potassium) with a compound of formula (V):
Figure imgf000078_0002
wherein Q, Z, R1, R2 and R3 are as defined above; under conditions analogous to those described above for the reaction between compound (III) and a compound of formula Z-Q-C02H or a carboxylate salt thereof.
The intermediates of formula (III) above may be prepared by reducing a compound of formula (VI):
Figure imgf000079_0001
wherein E, Y, R1 , R2 and R3 are as defined above.
The transformation is conveniently effected by catalytic hydrogenation of compound (VI), which typically comprises treating compound (VI) with gaseous hydrogen in the presence of a hydrogenation catalyst such as palladium on carbon.
Alternatively, the reduction of compound (VI) may be effected by treatment with elemental iron or zinc, typically at an elevated temperature in the presence of ammonium chloride.
Alternatively, the reduction of compound (VI) may be effected by treatment with tin(II) chloride, typically at an elevated temperature in the presence of a mineral acid such as hydrochloric acid.
The intermediates of formula (VI) wherein E represents a covalent bond or an optionally substituted straight or branched Ci_4 alkylene chain may be prepared by reacting a compound of formula L'-E'-Y with a compound of formula (VII):
Figure imgf000079_0002
wherein E1, Y, R1 , R2, R3 and L1 are as defined above; under conditions analogous to those described above for the reaction between compound (IV) and a compound of formula
Ι Ε^Υ.
Alternatively, the intermediates of formula (VI) wherein E represents a covalent bond or an optionally substituted straight or branched Ci_4 alkylene chain may be prepared by reacting a compound of formula Y-E1-NH2 with a compound of formula (VIII):
Figure imgf000080_0001
wherein E1 , Y, R1, R2 and R3 are as defined above.
The reaction is conveniently effected at ambient or elevated temperature in a suitable solvent, e.g. l-methyl-2-pyrrolidinone (NMP), a cyclic ether such as
tetrahydrofuran, or a dipolar aprotic solvent such as N,N-dimethylformamide. The reaction may be performed in the presence of a suitable base, e.g. an inorganic base such as potassium carbonate.
In another procedure, the compounds of formula (I) above, wherein Q corresponds to a group of formula -CH(OH)-Q1-, may be prepared by a process which comprises reacting an aldehyde of formula OHC-Q'-Z with a compound of formula (IX):
Figure imgf000080_0002
wherein E, Y, Z, R1, R2 and R3 are as defined above.
The reaction is conveniently effected in the presence of a strong base, e.g. n- butyllithium or lithium diisopropylamide (LDA). The reaction is carried out in a suitable solvent, e.g. a cyclic ether such as tetrahydrofuran.
The intermediates of formula (IX) above wherein E represents a covalent bond or an optionally substituted straight or branched Ci_4 alkylene chain may be prepared by reacting a compound of formula L'-E'-Y with a compound of formula (X):
Figure imgf000081_0001
wherein E1, Y, R1, R2, R3 and L1 are as defined above; under conditions analogous to those described above for the reaction between compound (IV) and a compound of formula L'-E'-Y.
Alternatively, the intermediates of formula (IX) above may be prepared by reacting a compound of formula (III) as defined above with formic acid, ideally at ambient temperature.
The intermediates of formula (IX) above wherein E represents -N(H)- may be prepared by reacting a compound of formula L2-Y with a compound of formula (XI):
Figure imgf000081_0002
wherein Y, R1, R2 and R3 are as defined above, and L2 represents a suitable leaving group; in the presence of a transition metal catalyst.
The leaving group L2 is typically a halogen atom, e.g. bromo.
A suitable transition metal catalyst for use in the above reaction is
tris(dibenzylideneacetone)dipalladium(0), in which case the reaction is conveniently performed in the presence of 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl. The reaction is suitably carried out at an elevated temperature in a suitable solvent, e.g. N,N- dimethylformamide, typically in the presence of a base, e.g. an inorganic base such as cesium carbonate.
In a further procedure, the compounds of formula (I) above wherein Z represents a lH-[l,2,3]triazol-l-yl moiety, optionally substituted in the 4-position, may be prepared by a process which comprises reacting a compound of formula H-C=C-RZ with a compound of formula (XII):
Figure imgf000082_0001
(XII) wherein E, Q, Y, R1, R2 and R3 are as defined above, and Rz represents an optional substituent on Z.
The reaction is conveniently performed in the presence of copper sulfate pentahydrate and sodium ascorbate. Suitably, the reaction is carried out at ambient temperature in a suitable solvent, e.g. a cyclic ether solvent such as tetrahydrofuran, typically in admixture with water.
The intermediates of formula (XII) above wherein E represents a covalent bond or an optionally substituted straight or branched Ci_4 alkylene chain may be prepared by reacting a compound of formula (XIII):
Figure imgf000082_0002
wherein Q, R1, R2 and R3 are as defined above, and L3 represents a suitable leaving group; with sodium azide; followed by reaction of the resulting compound with a compound of formula L^E^Y under conditions analogous to those described above for the reaction between compound (IV) and a compound of formula L'-E'-Y.
The leaving group L3 is typically a halogen atom, e.g. chloro.
The reaction between compound (XIII) and sodium azide is conveniently effected at ambient temperature in a suitable solvent, e.g. N,N-dimethylformamide. The compounds of formula (I) above wherein Q represents -S- may be prepared by a process which comprises reacting a compound of formula Z-S-Z with a compound of formula (IX) as defined above.
The reaction is conveniently effected at ambient temperature in a suitable solvent, e.g. N,N-dimethylformamide. The reaction may be performed in the presence of a suitable base, e.g. an inorganic base such as potassium carbonate.
In a further procedure, the compounds of formula (I) above may be prepared by a process which comprises cyclising a compound of formula (XIV):
Figure imgf000083_0001
wherein E, Q, Y, Z, R1, R2 and R3 are as defined above.
The cyclication reaction is conveniently effected by heating compound (XIV) in acetic acid.
The intermediates of formula (XIV) above may be prepared by a process which comprises reacting an aldehyde derivative of formula Y-E2-CHO with a compound of formula (XV):
Figure imgf000083_0002
(XV) wherein Q, Y, Z, R1, R2 and R3 are as defined above, and -E2-CH2- corresponds to a group E as defined above; in the presence of a reducing agent.
The reducing agent for use in the above reaction is suitably sodium triacetoxy- borohydride or sodium borohydride. In a further procedure, the compounds of formula (I) above wherein -Q-Z represents dimethylamino may be prepared by a process which comprises reacting a compound of formula (III) as defined above with (dichloromethylene)dimethylammonium chloride.
The reaction is conveniently effected in a suitable solvent, e.g. a chlorinated solvent such as dichloromethane, typically in the presence of a base, e.g. an organic base such as N,N-diisopropylethylamine.
As will be appreciated, the compounds of formula (IX) above correspond to compounds of formula (I) wherein Q represents a covalent bond and Z is hydrogen.
Where they are not commercially available, the starting materials of formula (V),
(VII), (VIII), (X), (XI), (XIII) and (XV) may be prepared by methods analogous to those described in the accompanying Examples, or by standard methods well known from the art.
It will be understood that any compound of formula (I) initially obtained from any of the above processes may, where appropriate, subsequently be elaborated into a further compound of formula (I) by techniques known from the art. By way of example, a compound of formula (I) which contains a hydroxy group may be alkylated by treatment with the appropriate alkyl halide in the presence of a base, e.g. sodium hydride or cesium carbonate, or silver oxide. A compound of formula (I) wherein -Q-Z represents -CH2OH may be arylated in a two-step procedure which comprises: (i) treatment with thionyl chloride; and (ii) treatment of the chloro derivative thereby obtained with the appropriate aryl or heteroaryl hydroxide. A compound of formula (I) wherein -Q-Z represents -CH2OH may be converted into the corresponding compound of formula (I) wherein Q represents -CH2S- via a two-step procedure which comprises: (i) treatment with thionyl chloride; and (ii) treatment of the chloro derivative thereby obtained with a compound of formula Z-SH, typically in the presence of a base, e.g. an inorganic base such as potassium carbonate. A compound of formula (I) which contains hydroxy may be converted into the corresponding fluoro-substituted compound by treatment with diethylaminosulfur trifluoride (DAST). A compound of formula (I) which contains hydroxy may be converted into the corresponding difluoro-substituted compound via a two-step procedure which comprises: (i) treatment with an oxidising agent, e.g. manganese dioxide; and (ii) treatment of the carbonyl-containing compound thereby obtained with DAST. A compound of formula (I) wherein -Q-Z represents -CH2OH may be converted into the corresponding compound wherein -Q-Z represents -CH(OH)Z in a two-step procedure which comprises: (i) oxidation with a suitable oxidising agent, e.g. Dess-Martin periodinane or manganese(IV) oxide; and (ii) treatment of the aldehyde derivative thereby obtained with a Grignard reagent, e.g. a compound of formula Z-MgBr or Z-MgCl.
A compound of formula (I) wherein -Q-Z represents -CH2OH may be converted into the corresponding compound wherein -Q-Z represents -CH(OH)CF3 in a two-step procedure which comprises: (i) oxidation with a suitable oxidising agent, e.g. Dess-Martin periodinane or manganese(IV) oxide; and (ii) treatment of the aldehyde derivative thereby obtained with (trifluoromethyl)trimethylsilane and cesium fluoride.
A compound of formula (I) which contains an N-H moiety may be alkylated by treatment with the appropriate alkyl halide, typically at an elevated temperature in an organic solvent such as acetonitrile, optionally in the presence of a base, e.g. an inorganic base such as sodium hydride. Alternatively, a compound of formula (I) which contains an N-H moiety may be alkylated by treatment with the appropriate alkyl tosylate, optionally in the presence of a base, e.g. an inorganic base such as sodium hydride, or an organic base such as l ,8-diazabicyclo[5.4.0]undec-7-ene (DBU).
A compound of formula (I) which contains an N-H moiety may be converted into the corresponding compound wherein the nitrogen atom is substituted by Ci_6 alkyl- sulphonyl, e.g. methylsulphonyl, by treatment with the appropriate Ci_6 alkylsulphonyl halide, e.g. a Ci_6 alkylsulphonyl chloride such as methanesulphonyl chloride, typically at ambient temperature in the presence of a base, e.g. an organic base such as triethylamine.
A compound of formula (I) which contains an -OH moiety may be converted into the corresponding compound containing an -OS02Ra moiety by treatment with the appropriate sulphonyl halide, e.g. a sulphonyl chloride of formula RaS02Cl, typically in the presence of a base, e.g. an organic base such as triethylamine.
A compound of formula (I) containing the moiety -S- may be converted into the corresponding compound containing the moiety -S(O)- by treatment with 3-chloroperoxy- benzoic acid. Likewise, a compound of formula (I) containing the moiety -S(O)- may be converted into the corresponding compound containing the moiety -S(0)2- by treatment with 3-chloroperoxybenzoic acid. A compound of formula (I) containing an aromatic nitrogen atom may be converted into the corresponding N-oxide derivative by treatment with 3-chloroperoxy- benzoic acid.
A bromophenyl derivative of formula (I) may be converted into the corresponding optionally substituted 2-oxopyrrolidin- 1 -ylphenyl or 2-oxooxazolidin-3-ylphenyl derivative by treatment with pyrrolidin-2-one or oxazolidin-2-one, or an appropriately substituted analogue thereof. The reaction is conveniently effected at an elevated temperature in the presence of copper(I) iodide, trans -N,N'-dimethylcyclohexane- 1,2- diamine and an inorganic base such as potassium carbonate.
A compound of formula (I) wherein R1 represents halogen, e.g. bromo, may be converted into the corresponding compound wherein R1 represents an optionally substituted aryl or heteroaryl moiety by treatment with the appropriately substituted aryl or heteroaryl boronic acid or a cyclic ester thereof formed with an organic diol, e.g. pinacol, 1,3 -propanediol or neopentyl glycol. The reaction is typically effected in the presence of a transition metal catalyst, e.g. [1,1 '-bis(diphenylphosphino)ferrocene]dichloropalladium(II) or tetrakis(triphenylphosphine)palladium(0), and a base, e.g. an inorganic base such as sodium carbonate or potassium carbonate.
A compound of formula (I) wherein R1 represents halogen, e.g. bromo, may be converted into the corresponding compound wherein R1 represents an optionally substituted aryl or heteroaryl moiety via a two-step procedure which comprises: (i) reaction with bis(pinacolato)diboron; and (ii) reaction of the compound thereby obtained with an appropriately substituted bromoaryl or bromoheteroaryl derivative. Step (i) is conveniently effected in the presence of a transition metal catalyst such as [1,1 '-bis- (diphenylphosphino)ferrocene]dichloropalladium(II). Step (ii) is conveniently effected in the presence of a transition metal catalyst such as tetrakis(triphenylphosphine)- palladium(O) and a base, e.g. an inorganic base such as sodium carbonate.
A compound of formula (I) wherein R1 represents halogen, e.g. bromo, may be converted into the corresponding compound wherein R1 represents an optionally substituted imidazol-l-yl moiety by treatment with the appropriately substituted imidazole derivative, typically in the presence of copper(II) acetate and an organic base such as N,N,NyV'-tetramethylethy lenediamine (TMED A) .
A compound of formula (I) wherein R1 represents halogen, e.g. bromo, may be converted into the corresponding compound wherein R1 represents 2-(methoxycarbonyl)- ethyl via a two-step procedure which comprises: (i) reaction with methyl acrylate; and (ii) catalytic hydrogenation of the alkenyl derivative thereby obtained, typically by treatment with a hydrogenation catalyst, e.g. palladium on charcoal, under an atmosphere of hydrogen gas. Step (i) is typically effected in the presence of a transition metal catalyst, e.g. palladium(II) acetate, and a reagent such as tri(ortAo-tolyl)phosphine.
A compound of formula (I) wherein R1 represents 6-methoxypyridin-3-yl may be converted into the corresponding compound wherein R1 represents 2-oxo-l,2-dihydro- pyridin-5-yl by treatment with pyridine hydrochloride.
A compound of formula (I) wherein R1 represents 2-oxo-l,2-dihydropyridin-5-yl may be converted into the corresponding compound wherein R1 represents 2-oxopiperidin- 5-yl by catalytic hydrogenation, typically by treatment with gaseous hydrogen in the presence of a hydrogenation catalyst such as platinum(IV) oxide.
A compound of formula (I) containing an ester moiety, e.g. a C2_6 alkoxycarbonyl group such as methoxycarbonyl or ethoxycarbonyl, may be converted into the
corresponding compound containing a carboxy (-C02H) moiety by treatment with an acid, e.g. a mineral acid such as hydrochloric acid. Alternatively, the transformation may be effected by treatment with a base, typically an inorganic base such as an alkali metal hydroxide, e.g. sodium hydroxide or lithium hydroxide; or an organic base such as sodium methoxide.
A compound of formula (I) containing an N-(tert-butoxycarbonyl) moiety may be converted into the corresponding compound containing an N-H moiety by treatment with an acid, e.g. a mineral acid such as hydrochloric acid, or an organic acid such as trifluoroacetic acid.
A compound of formula (I) wherein R1 represents a substituent containing at least one nitrogen atom, which substituent is linked to the remainder of the molecule via a nitrogen atom, may be prepared by reacting a compound of formula (I) wherein R1 represents halogen, e.g. bromo, with the appropriate compound of formula R'-H [e.g. 1- (pyridin-3-yl)piperazine]. The reaction is conveniently effected with the assistance of a transition metal catalyst, e.g. tris(dibenzylideneacetone)dipalladium(0), in the presence of an amination ligand such as 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (XPhos) and a base, e.g. an inorganic base such as sodium tert-butoxide.
A compound of formula (IIA) wherein R11 represents halogen, e.g. bromo, may be converted into the corresponding compound of formula (IIB) wherein V is N and R23 represents methyl via a four- step procedure which comprises: (i) reaction with isopropenyl acetate; (ii) treatment with potassium fluoride; (iii) treatment of the 2-oxopropyl derivative thereby obtained with N,N-dimethylformamide dimethyl acetal, ideally at an elevated temperature; and (iv) reaction of the material thereby obtained with the appropriate amidine derivative of formula R21-C(NH)NH2. Step (i) is conveniently accomplished with the assistance of a transition metal catalyst, e.g. palladium(II) acetate, typically in the presence of tri-n-butyltin methoxide and a reagent such as tri(ortAo-tolyl)phosphine. Step (iv) is typically effected at an elevated temperature in a suitable solvent, e.g. a Ci_4 alkanol such as methanol or ethanol, in the presence of a base, e.g. an alkali metal alkoxide such as sodium ethoxide or potassium tert-butoxide, or an alkali metal carbonate such as potassium carbonate.
A compound of formula (IIB) wherein R21 represents ethenyl may be prepared by reacting a compound of formula (IIB) wherein R21 represents halogen, e.g. chloro, with potassium vinyl trifluoroborate. The reaction is typically effected in the presence of a transition metal catalyst, e.g. [1,1 '-bis(diphenylphosphino)ferrocene]dichloropalladium(II), and a base, e.g. an organic base such as triethylamine.
A compound of formula (IIB) wherein R21 represents a substituent containing at least one nitrogen atom, which substituent is linked to the remainder of the molecule via a nitrogen atom, may be prepared by reacting a compound of formula (IIB) wherein R21 represents halogen, e.g. chloro, with the appropriate compound of formula R21-H [e.g. 2- methoxyethylamine, pyrrolidin-3-ol, l-(methylsulfonyl)piperazine, piperazin-2-one, thiomorpholine, l,4-diazepan-5-one or an appropriately substituted azaspiroalkane] in the presence of a base, e.g. an organic base such as triethylamine.
A compound of formula (I) containing a halogen atom, e.g. chloro, may be converted into the corresponding compound containing a -N-C(O)- or -N-S(0)2- moiety by treatment with the appropriate amide or sulphonamide derivative containing a -NH-C(O)- or -NH-S(0)2- functionality at an elevated temperature in the presence of a transition metal salt, e.g. palladium(II) acetate, 2,2'-bis(diphenylphosphino)-l,l '-binaphthalene (BINAP), and a base, typically an inorganic base, e.g. a carbonate salt such as cesium carbonate.
A compound of formula (I) containing a carboxy (-C02H) moiety may be converted into the corresponding compound containing a -CONRbRc moiety by treatment with the appropriate amine of formula H-NRbRc in the presence of 0-(7-azabenzotriazol- l-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate (HATU), and a base, typically an organic base such as N,N-diisopropylethylamine.
Where a mixture of products is obtained from any of the processes described above for the preparation of compounds according to the invention, the desired product can be separated therefrom at an appropriate stage by conventional methods such as preparative HPLC; or column chromatography utilising, for example, silica and/or alumina in conjunction with an appropriate solvent system.
Where the above-described processes for the preparation of the compounds according to the invention give rise to mixtures of stereoisomers, these isomers may be separated by conventional techniques. In particular, where it is desired to obtain a particular enantiomer of a compound of formula (I) this may be produced from a corresponding mixture of enantiomers using any suitable conventional procedure for resolving enantiomers. Thus, for example, diastereomeric derivatives, e.g. salts, may be produced by reaction of a mixture of enantiomers of formula (I), e.g. a racemate, and an appropriate chiral compound, e.g. a chiral base. The diastereomers may then be separated by any convenient means, for example by crystallisation, and the desired enantiomer recovered, e.g. by treatment with an acid in the instance where the diastereomer is a salt. In another resolution process a racemate of formula (I) may be separated using chiral HPLC. Moreover, if desired, a particular enantiomer may be obtained by using an appropriate chiral intermediate in one of the processes described above. Alternatively, a particular enantiomer may be obtained by performing an enantiomer-specific enzymatic biotransformation, e.g. an ester hydrolysis using an esterase, and then purifying only the enantiomerically pure hydrolysed acid from the unreacted ester antipode.
Chromatography, recrystallisation and other conventional separation procedures may also be used with intermediates or final products where it is desired to obtain a particular geometric isomer of the invention.
During any of the above synthetic sequences it may be necessary and/or desirable to protect sensitive or reactive groups on any of the molecules concerned. This may be achieved by means of conventional protecting groups, such as those described in
Protective Groups in Organic Chemistry, ed. J.F.W. McOmie, Plenum Press, 1973; and T.W. Greene & P.G.M. Wuts, Protective Groups in Organic Synthesis, John Wiley & Sons, 3rd edition, 1999. The protecting groups may be removed at any convenient subsequent stage utilising methods known from the art. The following Examples illustrate the preparation of compounds according to the invention.
The compounds in accordance with this invention potently inhibit T Fa-induced NF-KB activation in the following assay.
Inhibition of TNFa-induced NF-κΒ activation
Stimulation of HEK-293 cells by TNFa leads to activation of the NF-κΒ pathway. The reporter cell line used to determine TNFa activity was purchased from InvivoGen. HEK-Blue™ CD40L is a stable transfectant expressing SEAP (secreted alkaline phosphatase) under the control of the ΠΤΝΓβ minimal promoter fused to five NF-KB binding sites. Secretion of SEAP by these cells is stimulated in a dose-dependent manner by TNFa (0.5 ng/mL). Compounds were diluted from 10 mM DMSO stocks (final assay concentration 0.3%) to generate a 10-point 3-fold serial dilution curve (30,000 nM to 2 nM final concentration). They were mixed with cells and stimulating ligand in a 384-well microtitre plate and incubated for 18 h. SEAP activity was determined in the supernatant using the colorimetric substrate QUANTI-Blue™ (InvivoGen). Percentage inhibitions for compound dilutions were calculated between a DMSO control and maximum inhibition (by excess control compound) and an IC50 calculated using XLfit™ (4 parameter logistic model) in ActivityBase.
When tested in the above assay, the compounds of the accompanying Examples were all found to exhibit IC50 values of 50 μΜ or better.
EXAMPLES
Abbreviations
DCM: dichloromethane EtOAc: ethyl acetate
DMF: N,N-dimethylformamide MeOH: methanol
DMSO: dimethylsulfoxide EtOH: ethanol
Et20: diethyl ether MeCN: acetonitrile
THF: tetrahydrofuran DIPEA: N,N-diisopropylethylamine
DAST: diethylaminosulfur trifluoride LDA: lithium diisopropylamide
mCPBA: 3-chloroperoxybenzoic acid Pd(OAc)2: palladium(II) acetate NMP: l-methyl-2-pyrrolidinone DBU: l,8-diazabicyclo[5.4.0]undec-7-ene
TFA: trifluoroacetic acid DME: 1 ,2-dimethoxyethane
pTSA: /?-toluenesulfonic acid TBAF: : tetra-n-butylammonium fluoride
Si02: silica h: hour
r.t.: room temperature RT: retention time
br: broad M: mass
HPLC: High Performance Liquid Chromatography
LCMS: Liquid Chromatography Mass Spectrometry
ES+: Electrospray Positive Ionisation
brine: aqueous sodium chloride solution
EDC: l-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
HATU: 0-(7-azabenzotriazol- 1 -yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate
TMEDA: N,N,N',N'-tetramethylethylenediamine
Pd(PPh3)4 : tetrakis(triphenylphosphine)palladium(0)
Pd(PPh3)2Cl2: bis(triphenylphosphine)dichloropalladium(II)
PdCl2(dppf): [1,1 '-bis(diphenylphosphino)ferrocene]dichloropalladium(II)
Pd2(dba)3 : tris(dibenzylideneacetone)dipalladium(0)
XPhos : 2-dicyclohexylphosphino-2 ',4 ', 6 '-triisopropylbiphenyl
BINAP : 2,2 '-bis(diphenylphosphino)- 1 , 1 '-binaphthalene
Nomenclature
Compounds were named with the aid of ACD/Name Batch (Network) version 11.01 and/or Accelrys Draw 4.0. Analytical Conditions
All NMRs were obtained either at 300 MHz or at 400 MHz.
All reactions involving air- or moisture-sensitive reagents were performed under a nitrogen atmosphere using dried solvents and glassware.
Except where otherwise stated, analytical LCMS data were obtained by using Method 1 ox 2 below.
Preparative HPLC for all compounds of Intermediates 1-31 and Examples 1-55 that required it was performed using Method 3 below. Preparative HPLC for all library compounds was performed using Method 4 below. Preparative LCMS for compounds synthesized in accordance with Method J was performed using Method 5 below.
Analytical LCMS data for Examples 56-403, 410-443, 446-488, 500-507, 512, 519-523 and 525-528 were obtained using Method 6 below. Analytical LCMS data for Examples 404-409, 444, 445, 489-499, 508-511, 513-518 and 524 were obtained using Method 7 below.
All quoted LCMS RT and QC RT values are in minutes.
Method 1: Waters X-Bridge, CI 8, 2.1 x 20 mm, 2.5 μιη column.
Mobile phase A: 10 mM ammonium formate in water + 0.1% formic acid
Mobile phase B: acetonitrile + 5% mobile phase A + 0.1% formic acid
Gradient program (flow rate 1.0 mL/min, column temperature 40°C):
Time A% B%
0.00 95.0 5.0
4.00 5.0 95.0
5.00 5.0 95.0
5.10 95.0 5.0
Method 2: Waters XBridge, CI 8, 2.1 x 20 mm, 2.5 μιη column.
Mobile phase A: 10 mM ammonium formate in water + 0.1% ammonia solution
Mobile phase B: acetonitrile + 5% solvent A2 + 0.1% ammonia solution
Gradient program (flow rate 1.0 mL/min, column temperature 40°C):
Time A% B%
0.00 95.0 5.0
4.00 5.0 95.0
5.00 5.0 95.0
5.10 95.0 5.0
Method 3: Luna C18, 21.2 mm, 5 mm column, pH 2.5.
Mobile phase A: 99.92%> water and 0.08% formic acid.
Mobile phase B: 99.92% acetonitrile and 0.08% formic acid.
Gradient program (flow rate 25 mL/min, column temperature ambient): variable gradient. Method 4: Waters XBridge Prep MS C18 ODB, 30 x 50 mm, 5 μιη column.
Mobile phase A: water.
Mobile phase B: acetonitrile.
Mobile Phase C: NH4HC02 in water (40 g/5 L).
Gradient program (flow rate 35 mL/min to 60 mL/min):
Time A% B% C% flow rate
0.00 85.0 5.0 10.0 35
1.00 85.0 5.0 10.0 35
7.00 80.0 20.0 0.0 35
7.50 5.0 95.0 0.0 35
9.00 5.0 95.0 0.0 35
9.10 5.0 95.0 0.0 60
12.00 5.0 95.0 0.0 60
12.50 90.0 10.0 0.0 35
13.00 85.0 5.0 10.0 35
16.00 85.0 5.0 10.0 35
Method 5:
Column: Waters X-Select C-18, 150 x 19 mm, 5 μιη ODB in combination with Waters X-Select guard C-18, 10 x 19 mm, 5 μιη
Eluent A: 99% acetonitrile + 1% 10 mM ammonium bicarbonate (pH 9.5) in MilliQ water
Eluent B: 10 mM ammonium bicarbonate (pH 9.5) in MilliQ water
Flow: 25 mL/min
Collection: Mass and UV
Gradient: 0 min 70% B, 3.0 min 70% B, 10.0 min 30% B, 10.01 min 0% B, 17.5 min 0%
B, 17.51 min 70% B, 19.5 min 70% B
Method 6: Waters Acquity SQD (QC LCMS)
The Waters Acquity SQD system comprises an Acquity PDA, Acquity Column Manager, Acquity Sample Manager and Acquity Sample Organiser, Acquity Binary Solvent
Manager and a Waters SQD mass spectromter. The system is controlled via MassLynx 4.1. PDA C11UPD846A
Column Manager C11UPM180G
Sample Manager M10UPA441M
Sample Organiser F11UP0132M
Binary Solvent Manager E11UPB007A
SQD Mass Spectrometer LBA746
SQD Mass Spectrometer - ESI Source
Capillary Voltage 0.56 kV
Cone Voltage 55 V
Extractor Voltage 6 V
RF Lens 0.2 V
Source Temperature 150°C
Desolvation Temperature 350°C
Desolvation Gas 700 L/hour
Cone Gas 0 L/hour
Mass Range 150-650 amu
Scan Time 0.1 seconds Chromatography
Column Waters Acquity UPLC BEH C 18, 2.1 x 50 mm, 1.7 μιη
Injection Volume 1-5 xL
UV data 210 to 400 nm
Sample Temperature Ambient
Column Temperature 40°C
Flow Rate 1 mL/min
Solvent A2 10 mM ammonium formate + 0.1 % ammonia
Solvent B2 95% MeCN + 5% FLO + 0.1% ammonia
Gradient:
Time A% B%
0.00 95.0 5.0 0.50 95.0 5.0
1.75 5.0 95.0
2.00 5.0 95.0
2.25 95.0 5.0
Method 7:
Column: X-Select (50 x 2.1 mm, 3.5 μιη)
Flow: 0.8 mL/min
Column temp: 25 °C
Eluent A: 95% acetonitrile + 5% 10 mM ammonium bicarbonate
Eluent B: 10 mM ammonium bicarbonate in water
Lin. Gradient: 0 min 5% A, 3.5 min 98% A, 6 min 98% A
Detection: DAD (220-320 nm)
Detection: MSD (ESI pos/neg) mass range 100-800
INTERMEDIATE 1
( 1 H-Benzimidazol-2-yl)methanol
To a mixture of benzene- 1,2-diamine (5.0 g, 46.3 mmol) and glycolic acid (10.5 g, 138.0 mmol) was added 4N HC1 (30 mL). The reaction mixture was heated under reflux at 95°C for 2 h, then cooled to 0°C and neutralized with saturated aqueous NaOH. The precipitated solid was isolated by filtration and dried in vacuo to afford the title compound (5 g, 73%) as an off-white solid. δΗ (d6-DMSO) 12.20 (br s, 1H), 7.49-7.47 (dd, J5.8, 3.2 Hz, 2H), 7.13-7.11 (dd, J5.8, 3.2 Hz, 2H), 4.68 (s, 2H). LCMS (ES+) 149 (M+H)+.
INTERMEDIATE 2
1 -(2,5-DimethylbenzvD- lH-benzimidazole
Cesium carbonate (22.0 g, 100.0 mmol) and n-butylammonium iodide (12.5 g,
34.0 mmol) were added to a solution of benzimidazole (4.0 g, 34.0 mmol) in DMF (60 mL) at 0°C. The reaction mixture was stirred for 10 minutes at 0°C and then 2,5- dimethylbenzyl bromide (6.7 g, 34.0 mmol) was added. The reaction mixture was allowed to warm to r.t. and stirred for 3 h. The mixture was quenched with ice-cold water (50 mL) and extracted with ethyl acetate (3 x 40 mL). The organic layers were dried over anhydrous sodium sulphate and the solvent was removed in vacuo to afford the title compound (8.0 g, 75%) as an off-white solid. δΗ (d6-DMSO) 8.23 (s, 1H), 7.68-7.66 (m, 1H), 7.43-7.41 (m, 1H), 7.21-7.19 (m, 2H), 7.10 (d, J 7.6 Hz, 1H), 7.01 (d, J7.6 Hz, 1H), 6.67 (s, 1H), 5.45 (s, 2H), 2.25 (s, 3H), 2.14 (s, 3H). LCMS (ES+) 237 (M+H)+.
INTERMEDIATE 3 2-(Azidomethyl)-l-(2,5-dimethylbenzyl)-lH-benzimidazole
Sodium azide (0.22 g, 3.30 mmol) was added to a solution of 2-(chloromethyl)- lH-benzimidazole (0.50 g, 3.00 mmol) in DMF (3 mL) and stirred at r.t. for 3 h. 2,5- Dimethylbenzyl bromide (0.72 g, 3.60 mmol) was added to the reaction mixture, followed by potassium carbonate (1.04 g, 7.50 mmol), and the reaction mixture was stirred at r.t. for 18 h. Water (10 mL) was added and the mixture was poured into ethyl acetate/water. The organic layer was separated, dried (MgSC^) and concentrated in vacuo to afford the title compound (824 mg, 94%) as a yellow solid. δΗ (d6-DMSO) 7.73 (m, 1H), 7.37 (m, 1H), 7.24 (m, 2H), 7.13 (d, J7.6 Hz, 1H), 6.98 (m, 1H), 6.15 (s, 1H), 5.50 (s, 2H), 4.70 (s, 2H), 2.32 (s, 3H), 2.06 (s, 3H). LCMS (ES+) 292 (M+H)+.
INTERMEDIATE 4
2-(Pyridin-4-ylmethyl)-lH-benzimidazole
Benzene- 1,2-diamine (0.67 g, 6.18 mmol) and pyridin-4-ylacetic acid
hydrochloride (1.61 g, 9.25 mmol) were stirred at 110°C in 5M HC1 (5 mL) for 18 h. The reaction mixture was neutralised with saturated aqueous sodium carbonate solution and partitioned with ethyl acetate. The organic layer was separated, dried (MgSC^) and concentrated in vacuo to give a brown oil. The oil was redissolved in the minimum quantity of hot ethyl acetate and the solution left to cool to provide the desired product as pale crystals. The precipitate was filtered off and dried in vacuo to afford the title compound (285 mg, 22%) as pale yellow crystals. 5H (d6-DMSO) 12.34 (s, 1H), 8.51 (m, 2H), 7.48 (m, 2H), 7.34 (d, J5.8 Hz, 2H), 7.15 (dd, J 6.0, 2.5 Hz, 2H), 4.22 (s, 2H). LCMS (ES+) 210 (M+H)+. INTERMEDIATE 5
N-(2,5-Dimethylbenzyl)-2-nitroaniline
Sodium hydride (60% dispersion in mineral oil, 7.81 g, 195.0 mmol) was added to a stirred solution of 2-nitroaniline (30.0 g, 217.0 mmol) in DMF (20 mL) at 0°C. After 10 minutes, 2,5-dimethylbenzyl bromide (43.28 g, 217.0 mmol) was added and the reaction mixture was stirred at r.t. for 18 h, quenched with water and extracted with ethyl acetate (3 x 50 mL). The organic layer was separated, dried (MgS04) and concentrated in vacuo and the residue was purified by column chromatography (Si02, 5% EtOAc/hexane), yielding the title compound (30.0 g, 54%) as a yellow solid. δΗ (d6-DMSO) 8.40 (t, J5.2 Hz, IH), 8.09 (dd, J 8.4, 1.2 Hz, IH), 7.48 (t, J7.6 Hz, IH), 7.09 (d, J 8.4 Hz, IH), 7.03 (s, IH), 6.99 (d, J 7.6 Hz, IH), 6.89 (d, J 8.4 Hz, IH), 6.69 (td, J 7.6, 1.2 Hz, IH), 4.53 (d, J 5.6 Hz, 2H), 2.28 (s, 3H), 2.20 (s, 3H).
INTERMEDIATE 6
Nj-(2,5-Dimethylbenzyl)benzene- 1 ,2-diamine
Pd-C (20%) w/w, 0.176 g) was added to a stirred solution of Intermediate 5 (8.8 g, 34.0 mmol) in ethyl acetate (100 mL) and the mixture was stirred at r.t. for 18 h under an atmosphere of H2. The reaction mixture was filtered through a celite pad and
concentrated in vacuo to give a residue which was purified by column chromatography (Si02, 15%o EtOAc/hexane), yielding the title compound (10.8 g, 90%>) as a brown solid. δΗ (d6-DMSO) 7.10 (s, IH), 7.05 (d, J 7.6 Hz, IH), 6.95 (d, J7.6 Hz, IH), 6.55 (dd, J7.2, 1.6 Hz, IH), 6.46-6.38 (m, 2H), 6.32 (dd, J 7.2, 1.6 Hz, IH), 4.77 (d, J 5.2 Hz, IH), 4.56 (s, 2H), 4.16 (d, J 5.6 Hz, IH), 2.28 (s, 3H), 2.21 (s, 3H). LCMS (ES+) 357 (M+H)+.
INTERMEDIATE 7 1 -[ 1 -(2,5-Dimethylbenzyl)-lH-benzimidazol-2-yllethanol
To Intermediate 6 (0.25 g, 1.11 mol), dissolved in 5M HC1 (5 mL), was added sodium lactate (1.24 g, 11.1 mmol) and the reaction mixture was heated at 110°C for 4.5 h. The reaction mixture was neutralised with saturated aqueous sodium carbonate solution (10 mL) and partitioned with ethyl acetate (20 mL). The organic layer was separated, dried (MgS04) and concentrated in vacuo. The residue was purified by column chromatography (Si02, 1 : 1 EtOAc/hexane), yielding the title compound (0.17 g, 55%) as a brown solid. δΗ (d6-DMSO) 7.66 (d, J 7.1 Hz, 1H), 7.24 (m, 1H), 7.15 (m, 3H), 6.95 (d, J 7.6 Hz, 1H), 6.15 (s, 1H), 5.60 (d, J 6.3 Hz, 1H), 5.55 (s, 2H), 4.91 (quint, J 6.5 Hz, 1H), 2.35 (s, 3H), 2.03 (s, 3H), 1.53 (d, J 6.5 Hz, 3H). LCMS (ES+) 281 (M+H)+.
INTERMEDIATE 8 2-Nitro-N-( 1 -phenylethvDaniline
Triethylamine (20 mL, 141.0 mmol) was added to stirred solution of l-fluoro-2- nitrobenzene (10.0 g, 70 mmol) and a-methylbenzylamine (17.1 g, 141.0 mmol) in ethanol (50 mL) at 0°C. The reaction mixture was heated to 80°C for 6 h and
concentrated in vacuo, and the residue was extracted with ethyl acetate (3 x 50 mL). The organic layer was washed with saturated brine (2 x 20 mL), extracted, dried (MgS04) and concentrated in vacuo to give the title compound (12.0 g, 70%>) as a yellow solid. 5H (CDC13) 8.42 (br s, 1H), 8.17 (dd, J 8.4, 0.8 Hz, 1H), 7.34-7.23 (m, 6H), 6.64-6.58 (m, 2H), 4.72-4.65 (m, 1H), 1.64 (d, J 6.8 Hz, 3H). INTERMEDIATE 9
N]-(l -PhenylethyDbenzene- 1 ,2-diamine
Zinc (61.56 g, 941.0 mmol) and ammonium formate (49.2 g, 780.0 mol) were added to a stirred solution of Intermediate 8 (38.0 g, 156.0 mmol) in methanol (300 mL) at 0°C. The reaction mixture was warmed to r.t and stirred for 5 h. The reaction mixture was filtered through a celite pad and concentrated in vacuo to give a residue which was purified by column chromatography (Si02, 10% EtOAc/hexane), yielding the title compound (25 g, 75%) as a brown solid. δΗ (d6-DMSO) 7.35 (d, J 8.4 Hz, 1H), 7.27 (t, J 7.6 Hz, 2H), 7.16 (t, J7.6 Hz, 2H), 6.50 (d, J 7.2 Hz, 1H), 6.33-6.26 (m, 2H), 6.15 (d, J 8.4 Hz, 1H), 4.83 (d, J6.4 Hz, 1H), 4.63 (s, 2H), 4.46 (t, J 6.8 Hz, 1H), 1.44 (d, J7.2 Hz, 3H). LCMS (ES+) 213 (M+H)+. INTERMEDIATE 10 (METHOD A)
[ 1 -(1 -PhenylethyD- lH-benzimidazol-2-yllmethanol
A mixture of Intermediate 9 (20.0 g, 94.0 mmol) and glycolic acid (21.5 g, 282.0 mol) in methanol (20 mL) was heated to 80°C for 18 h. The reaction mixture was concentrated in vacuo and the residue triturated with diethyl ether to afford the title compound (15.0 g, 63%) as an off-white solid. δΗ (d6-DMSO) 7.58 (d, J 7.6 Hz, 1H), 7.36-7.28 (m, 4H), 7.11-6.97 (m, 4H), 6.14-6.08 (m, 1H), 5.76 (t, J5.6 Hz, 1H), 4.82 (d, J 5.6 Hz, 2H), 1.93 (d, J6.8 Hz, 3H). LCMS (ES+) 253 (M+H)+.
INTERMEDIATE 11
1 -(1 -PhenylethyD- lH-benzimidazole
Sodium hydride (4.40 g, 110.0 mmol) was added to a solution of benzimidazole (11.8 g, 100.0 mmol) in DMF (20 mL) at 0°C. The reaction mixture was stirred for 10 minutes at 0°C, then a-methylbenzyl bromide (100.0 mmol, 18.5 g) was added and the reaction mixture was allowed to warm to r.t. and heated to 60°C for 1 h. The reaction mixture was quenched with saturated aqueous sodium bicarbonate solution (50 mL) and extracted with ethyl acetate (3 x 40 mL). The organic layers were dried over anhydrous sodium sulphate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 20-100%) EtOAc/isohexane), yielding the title compound (0.85 g, 7%) as a white solid. δΗ (d6-DMSO) 8.54 (s, 1H), 7.67-7.63 (m, 1H), 7.43-7.40 (m, 1H), 7.33-7.25 (m, 5H), 7.17-7.12 (m, 2H), 5.48 (q, J 7.1 Hz, 1H), 1.96 (d, J7.1 Hz, 3H). INTERMEDIATE 12
5 -Bromo-2-nitro-N-( 1 -phenylethyDaniline
Triethylamine (37.9 mL, 272.0 mmol) was added to a stirred solution of 4-bromo- 2-fluoro-l -nitrobenzene (30.0 g, 136.0 mmol) and -methylbenzylamine (32.9 g, 272.0 mmol) in ethanol (200 mL) at 0°C. The reaction mixture was heated to 80°C for 6 h, then cooled and concentrated in vacuo. The residue was dissolved in EtOAc (90 mL) and washed with saturated brine (2 x 30 mL). The combined organics were extracted and dried over anhydrous sodium sulfate and concentrated in vacuo to give a yellow solid. The residue was triturated with isohexane, yielding the title compound (32.0 g, 74%) as a yellow solid. δΗ (CDC13) 8.43 (br s, 1H), 8.01 (d, J 8.0 Hz, 1H), 7.48-7.26 (m, 5H), 6.83 (s, 1H), 6.70 (d, J 8.8 Hz, 1H), 4.68-4.61 (m, 1H), 1.64 (d, J 6.8 Hz, 3H). INTERMEDIATE 13
5-Bromo-Nj-(l-phenylethyl)benzene-l,2-diamine
Zinc (13.4 g, 205.0 mmol) and ammonium formate (10.79 g, 171.0 mmol) were added to a stirred solution of Intermediate 12 (11.0 g, 34.2 mol) in MeOH (150 mL) at 0°C. The reaction mixture was stirred at r.t. for 5 h. The reaction mixture was filtered through a celite pad and concentrated in vacuo to give a residue which was purified by column chromatography (Si02, 10%> EtOAc/isohexane), yielding the title compound (9.0 g, 90%) as a yellow solid. δΗ (d6-DMSO) 7.35-7.16 (m, 5H), 6.42 (s, 2H), 6.20 (s, 1H), 5.13 (d, J6.4 Hz, 1H), 4.86 (br s, 2H), 4.46-4.43 (m, 1H), 1.43 (d, J6.4 Hz, 3H). LCMS (ES+) 291 (M+H)+.
INTERMEDIATE 14 r6-Bromo- 1 -(1 -phenylethyl)- lH-benzimidazol-2-vHmethanol
The title compound was prepared from Intermediate 13 and gly colic acid in accordance with Method A. δΗ (d6-DMSO) 7.69 (m, 1H), 7.53 (dd, J 8.6, 1.7 Hz, 1H), 7.41 (m, 6H), 6.18 (q, J7.1 Hz, 1H), 4.96 (m, 2H), 1.97 (d, J7.1 Hz, 3H). LCMS (ES+) 333 (M+H)+. INTERMEDIATE 15
5 -Bromo-2-nitroaniline
2-Fluoro-4-bromo-l -nitrobenzene (0.5 g, 2.2 mmol) was added to methanolic ammonia (10 mL) and stirred at r.t. for 18 h. The reaction mixture was then concentrated in vacuo and the residue was triturated with isohexane, yielding the title compound (0.48 g, 97%) as a yellow solid. δΗ (d6-DMSO) 7.88 (d, J 8.8 Hz, 1H), 7.53 (br s, 2H), 7.25 (d, J 3.0 Hz, 1H), 6.75 (dd, J 9.2, 2.0 Hz, 1H). INTERMEDIATE 16
5-Bromo-N-(2,5-dimethylbenzyl)-2-nitroaniline
Sodium hydride (60% dispersion in oil, 0.82 g, 20.7 mmol) was added to a stirred solution of Intermediate 15 (5.0 g, 23.0 mmol) in DMF (50 mL) at 0°C. 2,5-Dimethyl- benzyl bromide (4.56 g, 23.0 mmol) was added and the reaction mixture was warmed to r.t. and stirred for 5 h. The reaction mixture was quenched with saturated aqueous ammonium chloride solution, extracted with ethyl acetate (3 x 50 mL), washed with water (2 x 30 mL), dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 5% EtOAc/isohexane), yielding the title compound (4.89 g, 63%) as a yellow solid. δΗ (d6-DMSO) 8.42 (br s, 1H), 8.01 (d, J 8.8 Hz, 1H), 7.12-6.86 (m, 4H), 6.85 (d, J 7.2, 1.6 Hz, 1H), 4.54 (d, J 5.6 Hz, 2H), 2.28 (s, 3H), 2.21 (s, 3H). INTERMEDIATE 17
5-Bromo-Nj-(2,5-dimethylbenzyl)benzene- 1 ,2-diamine
SnCl2 (20.2 g, 89.4 mmol) was added to a stirred solution of Intermediate 16 (10.0 g, 29.8 mmol) in EtOH (200 mL) and the reaction mixture was heated to 80°C for 5 h. The reaction mixture was then concentrated in vacuo and the residue neutralized with saturated aqueous sodium bicarbonate solution and extracted with DCM (3 x 100 mL). The combined organics were washed with water (2 x 50 mL), extracted, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 5% MeOH/DCM), yielding the title compound (5.4 g, 69%) as a dark brown oil. δΗ (d6-DMSO) 7.08 (s, 1H), 7.06 (d, J 7.6 Hz, 2H), 6.97 (d, J 7.6 Hz, 1H), 6.53 (dd, J 8.4, 2.0 Hz, 1H), 6.47 (d, J 8.0 Hz, 1H), 6.45 (d, J2.0 Hz, 1H), 5.06 (t, J5.4 Hz, 1H), 4.77 (br s, 2H), 4.15 (d, J 5.2 Hz, 1H), 2.27 (s, 3H), 2.22 (s, 3H). LCMS (ES+) 305 (M+H)+. INTERMEDIATE 18
[6-Bromo- 1 -(2,5 -dimethylbenzyl)- lH-benzimidazol-2-yllmethanol
The title compound was prepared from Intermediate I 7 and glycolic acid in accordance wit MethodA. δΗ (d6-DMSO) 7.60 (m, 2H), 7.33 (dd, J7.2, 1.2 Hz, IH), 7.12 (d, J7.6 Hz, IH), 6.97 (d, J 7.6 Hz, IH), 6.09 (s, IH), 5.66 (t, J 5.6 Hz, IH), 5.52 (s, 2H), 4.60 (d, J 6.0 Hz, 2H), 2.32 (s, 3H), 2.04 (s, 3H). LCMS (ES+) 347 (M+H)+.
INTERMEDIATE 19
2-(Chloromethyl)-l-(2,5-dimethylbenzyl)-lH-benzimidazole
Thionyl chloride (33.3 g, 281.0 mmol) was added to a stirred solution of Example 1 (25.0 g, 93.0 mmol) in DCM (500 mL) at 0°C. The reaction mixture was warmed to r.t. and stirred for 2 h. The reaction mixture was concentrated in vacuo and the residue triturated with ether, yielding the title compound (16.0 g, 71%) as an off-white solid. 5H (dg-DMSO) 7.79 (d, J 7.6 Hz, IH), 7.42-7.35 (m, 3H), 7.14 (d, J 8.0 Hz, IH), 7.00 (d, J 7.2 Hz, IH), 6.30 (s, IH), 5.64 (s, 2H), 5.15 (s, 2H), 2.33 (s, 3H), 2.06 (s, 3H). LCMS (ES+) 285 (M+H)+. INTERMEDIATE 20 (METHOD G)
N- (4-Bromo-2- [(2,5 -dimethylbenzyl)amino"|phenyl I -2-(pyridin-4-ylmethyl)acetamide
4-Pyridylacetic acid hydrochloride (14.8 g, 108.0 mol) was added to a stirred solution of Intermediate 17 (22.0 g, 72.0 mmol) in DCM (400 mL) at 0°C, followed by the addition of HATU (41.1 g, 108.0 mmol) and DIPEA (24.8 mL, 144.0 mmol). The reaction mixture was stirred at r.t. for 18 h. Water (100 mL) was added and the organic layer was washed with saturated aqueous sodium bicarbonate solution. The organics were extracted, dried over sodium sulphate, and concentrated in vacuo. The residue was purified by column chromatography (Si02, 7% MeOH/DCM), yielding the title compound (31.0 g, 85%) as a yellow solid. δΗ (d6-DMSO) 9.56 (br s, IH), 8.67 (d, J 6.0 Hz, 2H), 7.68 (d, J6.0 Hz, 2H), 7.09-7.07 (m, 3H), 6.98 (d, J7.6 Hz, IH), 6.71 (dd, J7.2, 2.0 Hz, IH), 6.64 (d, J2.0 Hz, IH), 5.68 (br s, IH), 4.22 (s, 2H), 3.90 (s, 2H), 2.26 (s, 3H), 2.20 (s, 3H). LCMS (ES+) 424 (M+H)+. INTERMEDIATE 21 (METHOD H)
6-Bromo- 1 -(2,5-dimethylbenzyl)-2-(pyridin-4-ylmethyl)- lH-benzimidazole
4N HC1 (45 mL) was added to Intermediate 20 (30.0 g, 70.0 mmol) and the mixture was heated to 80°C for 5 h, then cooled to 0°C and neutralized with saturated aqueous sodium bicarbonate solution. The mixture was extracted with ethyl acetate (2 x 200 mL), dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 4% MeOH/DCM), yielding the title compound (22.0 g, 89%) as a white solid. δΗ (d6-DMSO) 8.38 (dd, J 6.4, 1.2 Hz, 2H),
7.65 (d, J 1.2 Hz, IH), 7.64 (dd, J 13.6, 3.6 Hz, IH), 7.34-7.31 (m, 2H), 7.18 (d, J 4.8 Hz, IH), 7.07 (d, J 7.6 Hz, IH), 6.90 (d, J7.6 Hz, IH), 5.78 (s, IH), 5.47 (s, 2H), 4.23 (s, 2H), 2.29 (s, 3H), 1.92 (s, 3H). LCMS (ES+) 408 (M+H)+.
INTERMEDIATE 22
N- {4-Bromo-2-|Yl -phenylethyl)amino]phenyl| -2-(pyridin-4-yl)acetamide
The title compound was prepared from Intermediate 13 and 4-pyridylacetic acid hydrochloride in accordance with Method G. δΗ (d6-DMSO) 9.60 (br s, IH), 8.53 (d, J 4.8 Hz, 2H), 7.40-7.19 (m, 7H), 7.07 (d, J 8.8 Hz, IH), 6.65 (dd, J 8.4, 1.6 Hz, IH), 6.47 (d, J 1.6 Hz, IH), 5.38 (d, J 6.4 Hz, IH), 4.55-4.52 (m, IH), 3.77 (s, 2H), 1.39 (d, J6.8 Hz, 3H). LCMS (ES+) 410 (M+H)+.
INTERMEDIATE 23
6-Bromo- 1 -(1 -phenylethyl)-2-(pyridin-4-ylmethyl)- lH-benzimidazole
The title compound was prepared from Intermediate 22 in accordance with Method H. δΗ (d6-DMSO) 8.47 (d, J 5.2 Hz, 2H), 7.55 (d, J 8.4 Hz, 2H), 7.34-7.14 (m, 8H), 6.01-5.96 (m, IH), 4.41 (s, 2H), 1.76 (d, J 6.8 Hz, 3H). LCMS (ES+) 394 (M+H)+. INTERMEDIATE 24
(Benzimidazol-l-yl)(2,5-dimethylphenyl)amine
Benzimidazol-l-ylamine (0.55 g, 4.1 mmol), 2-bromo-l,4-dimethylbenzene (0.84 g, 4.5 mmol), cesium carbonate (2.67 g, 8.3 mmol), tris(dibenzylideneacetone)- dipalladium(O) (0.19 g, 0.21 mmol) and 2-dicyclohexylphosphino-2',4',6'-triisopropyl- biphenyl (0.39 g, 0.83 mmol) were dissolved in anhydrous DMF (40 mL). The reaction mixture was degassed and then heated at 100°C for 4 h. The reaction mixture was concentrated in vacuo and partitioned between water (50 mL) and ethyl acetate (50 mL). The organic layer was extracted, dried with sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 5% MeOH/DCM), yielding the title compound (0.54 g, 55%) as a white solid. δΗ (d6-DMSO) 8.95 (s, 1H), 8.34 (s, 1H), 7.77-7.70 (m, 1H), 7.29-7.22 (m, 3H), 7.03 (d, J 7.5 Hz, 1H), 6.62-6.58 (m, 1H), 5.67 (s, 1H), 2.28 (s, 3H), 1.99 (s, 3H). LCMS (ES+) 238 (M+H)+.
INTERMEDIATE 25
2-(Pyridin-4-yl)propionic acid ethyl ester
Iodomethane (0.39 mL, 6.4 mmol) and sodium hydride (60% dispersion in mineral oil, 0.23 g, 6.4 mmol) were added to a solution of ethyl 4-pyridylacetate (1.0 g, 6.1 mmol) in anhydrous THF (60 mL). The reaction mixture was stirred at room temperature for 48 h and then concentrated in vacuo. The remaining oil was partitioned between DCM (100 mL) and aqueous NaHCOs solution (100 mL). The organic layer was separated, dried with sodium sulphate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 5% MeOH/DCM), yielding the title compound (0.34 g, 31%) as a clear oil. δΗ (d6-DMSO) 8.54-8.50 (m, 2H), 7.32-7.29 (m, 2H), 4.08 (qd, J 7.1, 1.2 Hz, 2H), 3.84 (q, J 7.1 Hz, 1H), 1.40 (d, J7.1 Hz, 3H), 1.14 (t, J 7.1 Hz, 3H). LCMS (ES+) 180 (M+H)+. INTERMEDIATE 26
{ 1 - [2-Methyl-5 -(trifluoromethyl)benzyl] - lH-benzimidazol-2-yl| methanol
The title compound was prepared from Intermediate I and 2-methyl-5- (trifluoromethyl)benzyl chloride in DCM, in accordance with Method B. LCMS (ES ) 321 (M+H)+.
INTERMEDIATE 27 ri-(2-Chloro-5-nitrobenzyl)-lH-benzimidazol-2-yl1methanol
The title compound was prepared from Intermediate 1 and 2-chloro-5-nitrobenzyl chloride in DCM, in accordance with Method B : LCMS (ES+) 318 (M+H)+.
INTERMEDIATE 28
[l-(5-Amino-2-chlorobenzyl)-lH-benzimidazol-2-yllmethanol
To Intermediate 27 (0.10 g, 0.32 mmol) dissolved in ethanol (10 mL) under an atmosphere of hydrogen gas was added Pd/C (0.01 g) and the reaction mixture was stirred at r.t. for 18 h. The catalyst was filtered off, and the reaction mixture was concentrated in vacuo. The residue was purified by reverse phase preparative HPLC, yielding the title compound (0.04 g, 49%) as a white solid. δΗ (d6-DMSO) 7.65 (m, 1H), 7.31 (m, 1H), 7.20 (m, 2H), 7.11 (d, J 8.5 Hz, 1H), 6.46 (dd, J 8.5, 2.3 Hz, 1H), 5.80 (d, J2.0 Hz, 1H), 5.64 (t, J4.8 Hz, 1H), 5.50 (s, 2H), 5.13 (s, 2H), 4.68 (d, J4.6 Hz, 2H). LCMS (ES+) 288 (M+H)+.
INTERMEDIATE 29
6-Bromo- 1 -(2,5-dimethylbenzyl)- lH-benzimidazole
A mixture of Intermediate 17 (0.40 g, 1.31 mmol) and formic acid (10 mL) was stirred at r.t. for 18 h. The reaction mixture was concentrated in vacuo and the residue partitioned between ethyl acetate and saturated aqueous sodium bicarbonate solution. The organic layer was dried over anhydrous sodium sulphate and concentrated in vacuo. The crude residue was purified by column chromatography (Si02, 20-75% EtOAc/ isohexane), yielding the title compound (0.20 g, 48%) as a white solid. δΗ (d6-DMSO) 8.24 (s, IH), 7.74 (d, J 1.7 Hz, IH), 7.64 (d, J 8.6 Hz, IH), 7.34 (dd, J 8.6, 1.9 Hz, IH), 7.12 (d, J7.7 Hz, IH), 7.02 (d, J 7.8 Hz, IH), 6.61 (s, IH), 5.47 (s, 2H), 2.24 (s, 3H), 2.15 (s, 3H). LCMS (ES+) 316 (M+H)+.
INTERMEDIATE 30
[6-Bromo-l-(2,5-dimethylbenzyl)-lH-benzimidazol-2-yll(pyridin-4-yl)methanol
To diisopropylamine (2.8 mL) in THF (10 mL), cooled to 0°C, was added n-BuLi (12.5 mL, 1.6M in hexanes) and the resulting mixture was stirred at 0°C for 10 minutes. An aliquot of this freshly prepared LDA (1.8 mL, 1.62 mmol) was added to a solution of Intermediate 29 (0.25 g, 0.81 mmol) in THF (5 mL) at -78°C. The reaction mixture was stirred for 2 h at -78°C, then pyridine-4-carboxaldehyde (0.15 mL, 1.62 mmol) was added and the reaction mixture was stirred at -78°C for 10 minutes. The mixture was quenched with saturated aqueous sodium chloride solution and allowed to warm to r.t. The mixture was extracted with ethyl acetate (3 x 40 mL). The organic layers were dried over anhydrous sodium sulphate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-10% MeOH/DCM), yielding the title compound (0.18 g, 51%) as a white solid. LCMS (ES+) 423 (M+H)+.
INTERMEDIATE 31
1 -(2,5-Dimethylbenzyl)-2-(phenylsulfanyl)- lH-benzimidazole
The title compound was prepared from Intermediate 2 and diphenyl disulfide in THF, in accordance with Method B. δΗ (d6-DMSO) 7.69-7.65 (m, IH), 7.46-7.44 (m,
2H), 7.39-7.31 (m, 4H), 7.26-7.20 (m, 2H), 7.10 (d, J 7.6 Hz, IH), 6.94 (d, J7.6 Hz, IH), 6.10 (s, IH), 5.50 (s, 2H), 2.33 (s, 3H), 1.99 (s, 3H). LCMS (ES+) 345 (M+H)+.
INTERMEDIATE 32
5 -(3 -Fluoro-4-nitrophenyl)-2-methoxypyridine
6-Methoxypyridin-3-ylboronic acid (40.0 g, 262 mmol), 4-bromo-2-fluoro-l- nitrobenzene (52.3 g, 238 mmol) and Na2C03 (76 g, 713 mmol) were mixed in 1,2- dimethoxyethane (1200 mL) and water (300 mL). The reaction mixture was purged with argon. Pd(PPh3)2Cl2 (8.34 g, 11.89 mmol) was added and the mixture was heated to 90°C for 1.5 h. EtOAc and water were added. The organic phase was separated and the aqueous phase was extracted twice with EtOAc. The combined organic layers were dried over Na2S04, after which the solvent was removed in vacuo. The residue was
recrystallised from toluene, affording the title compound (42.00 g, 169.2 mmol, 71%). MS [ESI+] m/z: 249 [M+H]+.
INTERMEDIATE 33
N-[2-(Difluoromethoxy)benzyll-5-(6-methoxypyridin-3-yl)-2-nitroaniline
2-(Difluoromethoxy)benzylamine (2.093 g, 12.09 mmol) was dissolved in NMP (20 mL). Intermediate 32 (2 g, 8.06 mmol) and K2C03 (1.336 g, 9.67 mmol) were added. This mixture was heated under microwave irradiation at 150°C for 30 minutes. EtOAc and water were added. The organic phase was separated and the aqueous phase was extracted twice with EtOAc. The combined organic layers were washed three times with water and twice with brine. After drying over Na2S04, the solvent was removed in vacuo. The residue was recrystallised from heptane/EtOAc (100/25 mL), to afford the title compound (2.513 g, 6.26 mmol, 78%). MS [ESI+] m/z: 402 [M+H]+.
INTERMEDIATE 34
N -r2-(Difluoromethoxy)benzyl1-5-(6-methoxypyridin-3-yl)benzene-l,2-diamine
Palladium on carbon (1.10 g, 10 wt %) was added to a solution of Intermediate 33 (2.512 g, 6.26 mmol) in EtOAc (150 mL), flushed with argon. The atmosphere was replaced with a H2 atmosphere and the reaction mixture was stirred under 1 bar of H2 for 1 h. The mixture was filtered through a layer of Kieselguhr. The filtrate was
concentrated in vacuo. Purification using flash column chromatography with 7-60% EtOAc in heptane afforded the title compound (2.07 g, 5.57 mmol, 89%). MS [ESI+] m/z: 372 [M+H]+. INTERMEDIATE 35
5-(4-Amino-3-[2-(difluoromethoxy)benzylaminolphenyl|pyridin-2(lH)-one
Pyridine hydrochloride (10.64 g, 92 mmol) was added to Intermediate 34 (6.84 g, 18.42 mmol). The reaction mixture was heated to 165°C in an open vessel for 3 minutes. Water was added and the mixture was sonicated. The precipitate was filtered off and then triturated in boiling acetonitrile. Filtration of the precipitate afforded the title compound (3.822 g, 9.95 mmol, 54%). MS [ESI+] m/z: 358 [M+H]+. INTERMEDIATE 36
N-[(5-Chloro-2-methylthiazol-4-yl)methyll-5-(6-methoxypyridin-3-yl)-2-nitroaniline
To a stirred mixture of (5-chloro-2-methylthiazol-4-yl)methanamine (14.2 g, 77 mmol) and K2C03 (15.93 g, 115 mmol) in NMP (250 mL) was added Intermediate 32 (19.07 g, 77 mmol). The resulting mixture was stirred at 60°C for 16 h. The reaction mixture was poured into water (1.5 L) under stirring, then isopropyl ether (200 mL) and EtOAc (20 mL) were added and stirring was continued. After 2 h the resulting precipitate was collected by filtration. Trituration with isopropyl ether (200 mL) afforded the title compound (31.07 g, 71.5 mmol, 93%). δΗ (DMSO-d6, 300 MHz) 2.62 (s, 3H); 3.92 (s, 3H); 4.71 (d, 2H, J5.4 Hz); 6.97 (d, 1H, J 8.7 Hz); 7.05 (dd, 1H, J 1.8, 9.0 Hz); 7.32 (d, 1H, J 1.8 Hz); 8.18 (m, 2H); 8.58 (d, 1H, J2.4 Hz); 8.68 (m, 1H). MS [ESI+] m/z: 392 [M+H]+.
INTERMEDIATE 37
N -[(5-Chloro-2-methylthiazol-4-yl)methyll-5-(6-methoxypyridin-3-yl)benzene-l,2- diamine hydrochloride
To a stirred solution of NH4C1 (16.97 g, 317 mmol) in water (400 mL) was added iron powder (17.72 g, 317 mmol). A solution of Intermediate 36 (31.0 g, 79 mmol) in methanol/THF (1 : 1, 400 mL) was added. The resulting mixture was stirred at 70°C. Water (1 L), methanol (1 L) and EtOAc (1 L) were added under stirring. The mixture was subsequently filtered over Kieselguhr. The layers were separated and the water layer was extracted with EtOAc. The combined organic layers were washed with brine, dried with Na2S04 and concentrated in vacuo. The residue was stirred in DCM (100 mL) and then filtered to remove salts. Hydrochloric acid (80 mL, 1M in Et20) was added with stirring. The precipitate was filtered off and then triturated overnight with water (150 mL). Filtration of the precipitate afforded the title compound (9.85 g, 23.55 mmol, 30%). δΗ (DMSO-d6, 300 MHz) 2.62 (s, 3H); 4.40 (s, 2H); 6.92 (d, IH, J 8.7 Hz); 6.98 (d, IH, J 1.8 Hz); 7.14 (d, 1H, J 1.8 Hz); 7.30 (d, 1H, J 8.1 Hz); 7.97 (dd, 1H, J2.4, 8.7 Hz); 8.45 (d, IH, J2.3 Hz); 9.71 (br s, 2H). 3H OMe signal obscured by DMSO. MS [ESI+] m/z: 362 [M+H]+.
INTERMEDIATE 38
5-(4-Amino-3-[(5-chloro-2-methylthiazol-4-ylmethyl)aminolphenyl|-lH-pyridin-2-one
The title compound can be synthesized from Intermediate 37 ' by the method of Intermediate 35.
INTERMEDIATE 39
3 - [2-(Difluoromethoxy)benzylaminol -4-nitrobenzonitrile
3-Fluoro-4-nitrobenzonitrile (19.19 g, 116 mmol) was added to a mixture of [2- (difluoromethoxy)phenyl]methanamine (20 g, 116 mmol) and K2CO3 (19.16 g, 139 mmol) in THF (200 mL). After 16 h the reaction mixture was diluted with DCM to a total volume of 1 L and then filtered over Kieselguhr. The filtrate was concentrated in vacuo and stripped with isopropyl ether to yield the title compound (36.8 g, 115 mmol, 100%). MS [ESI+] m/z: 320 [M+H]+.
INTERMEDIATE 40
4- Amino-3 - r2-(difluoromethoxy)benzylamino1benzonitrile
Palladium on carbon (1 g, 10 wt %) was added to a solution of Intermediate 39 (36.8 g, 115 mmol) in EtOAc (800 mL), flushed with argon. The argon atmosphere was replaced with a H2 atmosphere and the reaction mixture was stirred under 1 bar of H2 for 16 h. The mixture was filtered over Kieselguhr and the filtrate was concentrated in vacuo. The residue was subsequently triturated with isopropyl ether (200 mL). Filtration of the precipitate afforded the title compound (25.4 g, 88 mmol, 76%). δΗ (DMSO-d6, 300 MHz) 4.33 (d, 2H, J 5.7 Hz); 5.44 (t, 1H, J 5.7 Hz); 5.64 (s, 2H); 6.49 (d, 1H, J 1.5 Hz); 6.60 (d, 1H, J 8.3 Hz); 6.86 (dd, 1H, J 1.8, 8.1 Hz); 7.23 (m, 2H); 7.26 (t, 1H, J74.3 Hz); 7.35 (m, 2H). MS [ESI+] m/z: 290 [M+H]+.
INTERMEDIATE 41
3-(2,5-Dichlorobenzylamino)-4-nitrobenzonitrile
K2C03 (9.42 g, 68.2 mmol) was added to a mixture of (2,5-dichlorophenyl)- methanamine (10.00 g, 56.8 mmol) and 3-fluoro-4-nitrobenzonitrile (9.44 g, 56.8 mmol) in THF (200 mL). After 16 h Et20 and water were added. The organic phase was separated and the aqueous phase was extracted twice with Et20. The combined organic layers were dried over Na2S04, after which the solvent was removed in vacuo. The aqueous layer was extracted twice with EtO Ac and the combined organic extracts were dried over Na2S04, after which the solvent was added to the residue of the first evaporation. The solvent was then removed in vacuo, yielding the title compound (17.94 g, 52.3 mmol, 92%). δΗ (DMSO-d6, 300 MHz) 4.72 (d, 2H, J 6.6 Hz); 7.09 (dd, 1H, J 1.8, 8.7 Hz); 7.41 (m, 3H); 7.54 (dd, 1H, J4.2, 5.1 Hz); 8.24 (d, 1H, J 8.7 Hz); 8.64 (t, 1H, J 6.3 Hz). MS [ESI+] m/z: 323 [M+H]+.
INTERMEDIATE 42
4-Amino-3-(2,5-dichlorobenzylamino)benzonitrile
Palladium on carbon (0.2 g, 10 wt %) was added to a solution of Intermediate 41 (10 g, 31.0 mmol) and zinc bromide (6.88 g, 31.0 mmol) in EtO Ac (200 mL), flushed with argon. The argon atmosphere was replaced with a H2 atmosphere and the reaction mixture was stirred under 1 bar of H2 for for 5 h. The H2 atmosphere was then replaced with an argon atmosphere, palladium on carbon (0.4 g, 10 wt %) was added, and the reaction was continued under a H2 atmosphere for 5 h. The reaction mixture was filtered over Kieselguhr and the filtrate was subsequently washed with water and brine. After drying over Na2S04, the solvent was concentrated in vacuo. The residue was triturated with isopropyl ether (150 mL). The precipitate was collected by filtration, to afford the title compound (6.98 g, 23.9 mmol, 77%). δΗ (DMSO-d6, 300 MHz) 4.38 (d, 2H, J5.7 Hz); 5.56 (t, 1H, J 5.7 Hz); 6.49 (d, 1H, J 1.5 Hz); 6.63 (d, 1H, J 8.1 Hz); 6.89 (dd, 1H, J 1.5, 8.1 Hz); 7.39 (m, 2H); 7.53 (m, 1H). MS [ESI+] m/z: 293 [M+H]+.
INTERMEDIATE 43
(i?)-4-Nitro-3-(l-phenylethylamino)benzonitrile
3-Fluoro-4-nitrobenzonitrile (15.00 g, 90 mmol) was added to a solution of (R)-l- phenylethanamine (10.94 g, 90 mmol) in THF (300 mL). K2C03 (14.98 g, 108 mmol) was added. After 16 h, (i?)-l-phenylethanamine (2.189 g, 18.06 mmol) was added. After 1 h, EtOAc and water were added. The organic phase was separated and the aqueous phase was extracted twice with EtOAc. The combined organic layers were dried over Na2S04, after which the solvent was removed in vacuo. The residue was triturated with Et20. The precipitate was filtered off, affording the title compound (14.86 g, 55.6 mmol, 62%).
INTERMEDIATE 44
(R)-4- Amino-3 -( 1 -phenylethylamino)benzonitrile
Palladium on carbon (8.23 g, 10 wt %) was added to a solution of Intermediate 43 (13.78 g, 51.6 mmol) in EtOAc (1000 mL), flushed with argon. The argon atmosphere was replaced with a H2 atmosphere and the reaction mixture was stirred under 1 bar of H2 for 3 h. The mixture was filtered over Kieselguhr and the filtrate was concentrated in vacuo, affording the title compound (11.98 g, 50.5 mmol, 98%). δΗ (CDC13, 300 MHz) 1.55 (d, 3H, J6.9 Hz); 3.63 (s, 1H); 3.83 (s, 2H); 4.45 (m, 1H); 6.62 (d, 1H, J 1.5 Hz); 6.66 (d, 1H, J 7.8 Hz); 6.94 (dd, 1H, J 1.8, 7.8 Hz); 7.28 (m, 5H). MS [ESI+] m/z: 238 [M+H]+.
INTERMEDIATE 45 (6 -4-Nitro-3-(l-phenylethylamino)benzonitrile
3-Fluoro-4-nitrobenzonitrile (15 g, 90 mmol) was added to a solution of (S)-l- phenylethanamine (11.49 ml, 90 mmol) in THF (150 mL). K2C03 (18.72 g, 135 mmol) was added. After 2 h, (5)-l-phenylethanamine (3 ml, 23.57 mmol) was added. After 16 h - I l l - the reaction mixture was diluted with DCM to a total volume of 1 L under stirring. After 15 minutes the precipitated salts were removed by filtration over Kieselguhr. The filtrate was concentrated in vacuo to afford the title compound (24.14 g, 90 mmol, 100%). INTERMEDIATE 46
(5V4-Amino-3 -( 1 -phenylethylamino)benzonitrile
Palladium on carbon (1 g, 10 wt %) was added to a solution of Intermediate 45
(24.06 g, 90 mmol) in EtOAc (500 mL), flushed with argon. The argon atmosphere was replaced with a H2 atmosphere and the reaction mixture was stirred under 1 bar of H2 for
5 h. The mixture was filtered over Kieselguhr and the filtrate was concentrated in vacuo.
The residue was triturated with isopropyl ether (100 mL). Filtration of the precipitate afforded the title compound (19.2 g, 81 mmol, 90%). δΗ (DMSO-d6, 300 MHz) 1.46 (d,
3H, J 6.6 Hz); 4.54 (q, 1H, J 6.6 Hz); 5.32 (d, 1H, J 6.3 Hz); 5.74 (s, 2H); 6.34 (d, 1H, J 1.5 Hz); 6.55 (d, 1H, J 7.8 Hz); 6.76 (dd, 1H, J 1.7, 8.0 Hz); 7.19 (m, 1H); 7.32 (m, 4H).
MS [ESI+] m/z: 238 [M+H]+.
INTERMEDIATE 47 (METHOD K) 6-Bromo- 1 -(2-difluoromethoxybenzyl)-2 -methyl- lH-benzimidazole
Step 1 : To a solution of 2-(difluoromethoxy)benzylamine (5.00 g, 28.9 mmol) in DMF (50 mL) were added 4-bromo-2-fluoronitrobenzene (6.68 g, 30.3 mmol) and potassium carbonate (4.80 g, 34.68 mmol). The mixture was stirred at 100°C overnight. After this time the mixture was diluted with water (100 mL) and cooled to room temperature. The resultant solid precipitate was filtered off, washed with water and dried under vacuum, to give 5-bromo-N- [2-(difluoromethoxy)benzyl] -2-nitroaniline (10.00 g, 93%) as a yellow solid. δΗ (DMSO-d6, 400 MHz) 8.64 (t, J 6.1 Hz, 1H), 8.02 (d, J 9.1 Hz, 1H), 7.35-7.41 (m, 2H), 7.32 (t, J 74.0 Hz, 1H), 7.21-7.28 (m, 2H), 7.09 (d, J 1.8 Hz, 1H), 6.86 (dd, J 9.1, 1.9 Hz, 1H), 4.66 (d, J 6.2 Hz, 2H).
Step 2: To a solution of the foregoing material (3.00 g, 8.04 mmol) in ethanol (30 mL) and 10% HC1 (15 mL) was added tin(II) chloride (4.57 g, 24.12 mmol). The mixture was stirred at 80°C overnight. After this time the mixture was basified with 10% aqueous NaOH solution (25 mL) and the mixture was cooled to room temperature. The mixture was then extracted with EtOAc (4 x 100 mL), and the combined organic layers were dried (Na2S04), filtered and concentrated in vacuo. The crude product was purified by chromatography (Si02; 5-30% EtOAc/hexane) to obtain 5-bromo-N1 -[2-(difluoro- methoxy) benzyl] 'benzene- 1 ,2 -diamine (1.74 g, 63%) as a yellow oil. 5H (DMSO-d6, 400 MHz) 7.32-7.39 (m, 2H), 7.27 (t, J 74.2 Hz, IH), 7.20-7.25 (m, 2H), 6.48-6.56 (m, 2H), 6.34 (d, J2.0 Hz, IH), 5.33 (t, J 5.8 Hz, IH), 4.76 (s, 2H), 4.30 (d, J 5.8 Hz, 2H). LCMS (ES+) 344 (M+H)+, RT 2.44 minutes.
Step 3: A solution of the foregoing material (545 mg, 1.59 mmol) in acetic acid (10 mL) was heated at 80°C for 18 h. The reaction mixture was allowed to cool to ambient temperature, the volatiles were removed in vacuo, and the crude product was purified by chromatography (Si02; 20-60%) EtOAc/hexane), to obtain the title compound (479 mg, 82%) as a brown solid. δΗ (DMSO-d6, 400 MHz) 7.68 (d, J 1.8 Hz, IH), 7.52 (d, J 8.7 Hz, IH), 7.37-7.47 (m, IH), 7.32 (t, J 74.2 Hz, IH), 7.25-7.33 (m, 2H), 7.17 (td, J 7.68, 0.9 Hz, IH), 6.75 (dd, J 7.6, 1.2 Hz, IH), 5.49 (s, 2H), 2.48 (s, 3H). LCMS (ES+) 368 (M+H)+, RT 2.67 minutes.
INTERMEDIATE 48
6-Bromo- 1 -(2,5 -dichlorobenzvD-2-methyl- lH-benzimidazole
From 2,5-dichlorobenzylamine in accordance with Method K.
INTERMEDIATE 49
6-Bromo- l-r5-chloro-2-(difluoromethoxy)benzyll-2-methyl-lH-benzimidazole
From 5-chloro-2-(difluoromethoxy)-benzylamine in accordance with Method K.
INTERMEDIATE 50
6-Bromo- 1 -r2-(difluoromethoxy)benzyll-5-fluoro-2-methyl- lH-benzimidazole
From 4-bromo-2,5-difluoronitrobenzene and 2-(difluoromethoxy)benzylamine in accordance with Method K. INTERMEDIATE 51
6-Bromo-l-(2,5-dichlorobenzyl)-5-fluoro-2-methyl-lH-benzimidazole
From 4-bromo-2,5-difluoronitrobenzene and 2,5-dichlorobenzylamine in accordance with Method K.
INTERMEDIATE 52
2-(Chloromethyl)-l-r2-(difluoromethoxy)benzyl1-lH-benzimidazole-6-carbonitrile
Example 488 (2.5 g, 7.2 mmol) was treated with thionyl chloride (6 mL) and stirred at room temperature for 30 minutes. After this time, the reaction mixture was concentrated in vacuo and the residue was partitioned between DCM and saturated aqueous Na2C03 solution. The aqueous phase was extracted with further DCM and the combined organic fractions were dried by passing through a phase separator cartridge, then evaporated in vacuo, to afford the title compound (2.7 g, 98%) as an off white solid. δΗ (300 MHz, DMSO) 8.08 (d, IH, J 0.9 Hz), 7.88 (d, IH, J 8.4 Hz), 7.65 (dd, IH, J 8.4, 1.5 Hz), 7.41 (m, IH), 7.10 (t, 1H, J 73.8 Hz), 7.25 (m, IH), 7.17 (m, IH,), 6.84 (m, IH), 5.70 (s, 2H), 5.08 (s, 2H). LCMS (ES+) 348 (M+H)+, RT 3.5 minutes.
INTERMEDIATE 53
2- {[(3-Bromophenyl)sulfanyl]methyl| - 1 -[2-(difluoromefhoxy)benzyl"|- \H- benzimidazole-6-carbonitrile
A solution of Intermediate 52 (500 mg, 1.44 mmol) in DMF (10 mL) was treated with K2CO3 (397 mg, 2.88 mmol) and 3-bromobenzenethiol (550 mg, 2.88 mmol) and stirred at room temperature for 24 h. After this time, the reaction mixture was
concentrated in vacuo and the residue was partitioned between EtOAc and water. The aqueous phase was extracted with further EtOAc and the combined organic fractions were washed with brine. After drying by passing through a phase separator cartridge, the organic layer was evaporated in vacuo and the residue was purified by column
chromatography (Si02, 0-50% EtOAc in DCM) to give the title compound (256 mg, 36%) as a waxy solid. δΗ (300 MHz, DMSO) 8.00 (d, IH, J 0.9 Hz), 7.75 (d, IH, J 8.4 Hz), 7.60 (m, 2H), 7.30 (m, 6H), 7.12 (m, 1H), 6.70 (dd, 1H, J7.6, 1.2 Hz), 5.67 (s, 2H), 4.62 (s, 2H). LCMS (ES+) 501 (M+H)+, RT 2.80 minutes.
INTERMEDIATE 54
5-Bromo-N-(2,5-dichlorobenzyl)-2-nitroaniline
From 4-bromo-2-fluoronitrobenzene and 2,5-dichlorobenzylamine in accordance with the procedure described for Intermediate 47, Step 1.
INTERMEDIATE 55
N-(2,5-Dichlorobenzyl)-2-nitro-5-(pyridin-4-yl)aniline
Intermediate 54 (12.5 g, 33.6 mmol), pyridin-4-ylboronic acid (5.0 g, 40.3 mmol) and tetrakis(triphenylphosphine)palladium(0) (1.95 g, 1.3 mmol) were dissolved in a mixture of saturated aqueous Na2CC"3 solution (50 mL) and 1,4-dioxane (250 mL). The solution was degassed with nitrogen and then heated at 120°C for 5 h. The 1,4-dioxane was removed under vacuum and then the resultant oil was partitioned between EtOAc (200 mL) and water (200 mL). The organic layer was separated, dried and concentrated in vacuo to afford the title compound (9.95 g) as a crude oil which was used without chromatography.
INTERMEDIATE 56
N -(2,5-Dichlorobenzyl)-4-(pyridin-4-yl)benzene- 1 ,2-diamine
Intermediate 55 (9.95 g, 26.6 mmol) was dissolved in ethanol (100 mL). Tin(II) chloride (15.1 g, 80 mmol) and HC1 (10% solution, 49 mL) were added sequentially to the reaction mixture, which was then heated to 100°C. After 5 hours, 2M aqueous NaOH solution (50 mL) was added and the reaction mixture was allowed to cool to room temperature. This solution was extracted with EtOAc (3 x 200 mL), the organic layers were combined and dried, and the solvent was removed under reduced pressure. The resulting oil was triturated with MeCN to afford the title compound (5.1 g, 55%) as a pale solid. δΗ (DMSO-d6, 300 MHz) 8.44 (m, 2H), 7.52 (m, 2H), 7.43 (m, 2H), 7.36 (dd, 1H, J 8.5, 2.7 Hz), 6.98 (dd, 1H, J 8.0, 2.0 Hz), 6.68 (m, 2H), 5.44 (m, 1H), 5.09 (s, 2H), 4.48 (d, 2H, J 5.9 Hz). LCMS (ES+) 346.2 (M+H)+, RT 1.39 minutes (pH 10).
INTERMEDIATE 57
1- r2-(Difluoromethoxy)benzyl1-2-methyl-6-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2- yl)- lH-benzimidazole
Intermediate 47 (4.00 g, 10.9 mmol), bis(pinacolato)diboron (3.87 g, 15.3 mmol), potassium acetate (3.23 g, 32.8 mmol) and PdCl2(dppf) (400 mg, 5 mol %) were dissolved in DMSO (25 mL) and heated to 100°C for 30 minutes. The mixture was diluted with water (200 mL) and extracted with ethyl acetate (250 mL). The organic layer was washed with saturated brine (100 mL), dried (Na2S04) and concentrated in vacuo. The residue was purified by chromatography (silica, 50% EtOAc, 50%> isohexane gradient to 100%) EtOAc) to afford the title compound (2.50 g, 55%) as an off-white solid. δΗ (d6- DMSO) 7.69 (s, 1H), 7.57 (d, 1H, J 8.0 Hz), 7.51 (m, 1H), 7.37 (m, 1H), 7.34 (t, 1H, JH-F 73.9 Hz), 7.28 (d, 1H, J 7.6 Hz), 7.13 (dt, 1H, J 7.6, 1.0 Hz), 6.53 (dd, 1H, J 7.7, 1.1 Hz), 5.53 (s, 2H), 2.49 (s, 3H under d6-DMSO signal), 1.28 (s, 12H). LCMS (ES+) 415 (M+H)+. INTERMEDIATE 58 tert-Butyl 4-(5-(l-[2-(difluoromethoxy)benzyll-2-methyl-lH-benzimidazol-6-yl|pyridin-
2- yl)piperazine- 1 -carboxylate
The following experiment was performed three times in parallel and the crude reaction mixtures combined for work-up and purification.
A mixture of tert-butyl 4-[5-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)pyridin- 2-yl]piperazin-l-ylcarboxylate (20 g, 54.5 mmol), Intermediate 47 (24.5 g, 63.14 mmol), PdCl2(dppf) (0.8 g, 1.1 mmol) and 2M aqueous sodium carbonate solution (25 mL) in 1,4-dioxane (200 mL) was degassed and heated under reflux in a nitrogen atmosphere overnight. The cooled reaction mixtures were combined, diluted with EtOAc and washed twice with brine. The organic layer was dried (MgS04) and the solvent was removed by rotary evaporation. The crude residue was purified by column chromatography using a VersaFlash column eluting with EtOAc-hexane (3:2, then 1 : 1, then 2: 1), then 100% EtOAc. The resulting material was triturated from ether, filtered, washed with more ether and dried to give the title compound (50.5 g, 56%) as a cream solid. δΗ (DMSO-d6) 8.44 (d, J2.3 Hz, IH), 7.85 (dd, J 8.9 Hz, J2 2.6 Hz, IH), 7.66 (d, J 1.3 Hz, IH), 7.60 (d, J 8.4 Hz, IH), 7.41 (m, 2H), 7.35 (t, JH,F 76 Hz, IH), 7.27 (m, IH), 7.16 (m, IH), 6.92 (m, IH), 6.79 (m, IH), 5.54 (s, 2H), 3.52 (m, 4H), 3.44 (m, 4H), 2.50 (s, 3H), 1.43 (s, 9H). LCMS (ES+) 550 (M+H)+, RT 1.61 minutes.
INTERMEDIATE 59 6-(6-Chloropyridin-3-yl)-l-r2-(difluoromethoxy)benzyl1-2-(methoxymethyl)-lH- benzimidazole
A suspension of 6-chloropyridin-3-ylboronic acid (2.3 g, 18 mmol), Example 444 (3.5 g, 8.8 mmol) and a 2N aqueous solution of K3P04 (25 mL) in DMF (5 0 mL) was treated with tetrakis(triphenylphosphine)palladium(0) (61 mg, 0.53 mmol) and heated to 65°C under N2. Further DMF (20 mL) was added, giving an orange/yellow solution. The mixture was heated for 2 h at 65 °C. The reaction mixture was treated with further tetrakis(triphenylphosphine)palladium(0) (200 mg, 1.72 mmol). The reaction mixture was heated to 71°C for 1 h, then allowed to cool to ambient temperature. The mixture was diluted with ethyl acetate (100 mL) and water (200 mL) and the layers were separated. The aqueous phase was extracted with further ethyl acetate (100 mL) and the combined organic layers were washed with water (100 mL) and brine (100 mL) and dried over MgS04. Removal of solvent in vacuo gave a crude yellow solid which was purified by column chromatography on Si02, eluting with dichloromethane: ethyl acetate (1 : 1 by volume), to give a yellow solid (1 g). Further purification by column chromatography on Si02, eluting with dichloromethane: ethyl acetate (1 : 1 by volume), gave the title compound (0.65 g, 17%) as a yellow solid. δΗ (300 MHz, DMSO-d6) 8.71 (d, IH), 8.14 (dd, IH), 7.86 (s, IH), 7.78 (d, IH), 7.56-7.65 (m, 3H), 7.33-7.38 (m, IH), 7.25 (d, IH), 7.12 (t, IH), 6.74 (d, IH), 5.64 (s, 2H), 4.66 (s, 2H), 3.25 (s, 3H). LCMS (6120B, 3 minutes method, pH 10) mlz 430.2, RT 1.15 minutes. INTERMEDIATE 60
5-Bromo-N-(2,5-dimethylbenzyl)-2-nitroaniline
From 4-bromo-2-fluoronitrobenzene and 2,5-dimethylbenzylamine in accordance with the procedure described for Intermediate 47, Step 1.
INTERMEDIATE 61
4-Bromo-N -(2,5-dimethylbenzyl)benzene- 1 ,2-diamine
Zinc powder (5.8 g, 89.2 mmol) was added to a stirred suspension of Intermediate
60 (10 g, 29.9 mmol) and a saturated solution of ammonium chloride (60 mL) in ethanol (180 mL) and the mixture was stirred at 50°C. After 1.5 h, LCMS showed 50% conversion. Consequently, additional zinc dust (5 g) was added and stirring was continued at the same temperature until LCMS indicated completion of the reaction (a further 1 h). The reaction mixture was filtered through celite and the solid was thoroughly washed with DCM. The combined filtrate was then washed with 2M aqueous sodium hydroxide solution and dried (MgS04). The solvent was removed by rotary evaporation to give the title compound (5.2 g, 100%) as a brown syrup which was used without further purification. δΗ (CDC13) 7.15 (m, 2H), 7.13 (m, 1H), 7.07 (m, 1H), 6.84 (m, 1H), 6.81 (m, 1H), 6.62 (d, J 8.0 Hz, 1H), 4.19 (s, 2H), 3.53 (br s, 1H), 3.28 (br s, 1H), 2.36 (s, 3H), 2.34 (s, 3H). LCMS (ES+) 306 and 307 (M+H)+, RT 162 minutes.
INTERMEDIATE 62 N-{4-Bromo-2-r(2,5-dimethylbenzyl)aminolphenyl|-2-(pyridin-4-yl)acetamide
A mixture of 2-(pyridin-4-yl)acetic acid hydrochloride salt (4.0 g, 23.1 mmol) and HATU (11.6 g, 30.5 mmol) in DCM (75 mL) was stirred in ice bath. DIPEA (15.5 mL, 89.9 mmol) was added and the mixture was stirred for 10 minutes, then a solution of Intermediate 61 (6.2 g, 20.3 mmol) in DCM (40 mL) was gradually added and stirred overnight. The reaction mixture was diluted with DCM and washed with a saturated solution of sodium bicarbonate, then dried (MgS04) and concentrated by rotary evaporation. The crude residue was purified by column chromatography on silica gel, eluting with EtOAc-hexane (1 : 1 then 2: 1), followed by crystallization from diethylether to give the title compound (2.64 g, 31%) as off-white solid. δΗ (DMSO-d6) 9.51 (s, IH), 8.48 (m, 2H), 7.33 (d, J5.9 Hz, 2H), 7.10 (m, 3H), 7.00 (m, IH), 6.72 (dd, J 8.3 Hz, J2 2.1 Hz, IH), 6.69 (m, IH), 5.56 (t, J5.4 Hz, IH), 4.22 (d, J 5.4 Hz, 2H), 3.72 (s, 2H), 2.27 (s, 3H), 2.23 (s, 3H). LCMS (ES+) 424 and 426 (M+H)+, RT 1.51 minutes.
INTERMEDIATE 63
6-Bromo-l-(2,5-dimethylbenzyl)-2-(pyridin-4-ylmethyl)benzimidazole
A suspension of Intermediate 62 (2.64 g, 6.23 mmol) in glacial acetic acid (50 mL) was stirred at 100°C for 1 h until LCMS analysis showed completion of reaction. The reaction mixture was concentrated and the residue was dissolved in DCM, then washed twice with a saturated solution of sodium bicarbonate. The organic phase was dried (MgS04) and concentrated. Diethyl ether was added and the resultant crystalline product was filtered, washed with more diethyl ether and dried, to give the title compound (2.3 g, 91%) as off-white solid. δΗ (DMSO-d6) 8.39 (m, 2H), 7.64 (m, 2H), 7.34 (dd, J 8.5 Hz, J2 1.9 Hz, IH), 7.20 (m, 2H), 7.08 (d, J7.6 Hz, IH), 6.92 (d, J 7.6 Hz, IH), 5.81 (s, IH), 5.48 (s, 2H), 4.24 (s, 2H), 2.31 (s, 3H), 1.95 (s, 3H). LCMS (ES+) 407 and 408 (M+H)+, RT 1.49 minutes. INTERMEDIATE 64 tert-Butyl 4-({4-[l-(2,5-dimethylbenzyl)-2-(pyridin-4-ylmethyl)-lH-benzimidazol-6- vHphenyl|methvDpiperazine-l-carboxylate
A mixture of Intermediate 63 (230 mg, 0.57 mmol), tert-butyl 4-{[4-(4,4,5,5- tetramethyl-l,3,2-dioxaborolan-2-yl)phenyl]methyl}piperazine-l-carboxylate (320 mg, 0.79 mmol), tetrakis(triphenylphosphine)palladium(0) (33 mg, 0.028 mmol) and 2M aqueous sodium carbonate solution (1 mL) in 1,4-dioxane (4 mL) was degassed and heated at reflux temperature under nitrogen overnight. LCMS showed completion of reaction. The cooled reaction mixture was diluted with EtOAc and washed with brine. The organic extract was dried (MgS04) and concentrated. The crude residue was purified by column chromatography on silica gel, eluting with EtOAc-MeOH (30: 1, then 20: 1), to give the title compound (300 mg, 88%>) as a pale yellow syrup. δΗ (DMSO-d6) 8.39 (m, 2H), 7.72 (d, J 8.4 Hz, IH), 7.66 (d, J 1.2 Hz, IH), 7.60 (d, J 8.2 Hz, 2H), 7.52 (dd, J 8.4 Hz, J2 1.6 Hz, 1H), 7.35 (d, J 8.1 Hz, 2H), 7.22 (d, J 5.9 Hz, 2H), 7.08 (m, 1H), 6.90 (dd, Ji 7.4 Hz, J2 0.2 Hz, 1H), 5.92 (s, 1H), 5.53 (m, 2H), 4.26 (s, 2H), 3.50 (m, 2H), 3.32 (m, 4H), 2.33 (m, 7H), 1.94 (s, 3H), 1.39 (s, 9H). LCMS (ES+) 602 (M+H)+, RT 1.61 minutes.
INTERMEDIATE 65
6-(2-Chloropyrimidin-5-yl)-l-[2-(difluoromethoxy)benzyll-2-methyl-lH-benzimidazole To Intermediate 47 (1.0 g, 2.72 mmol) under a nitrogen atmosphere were added 2- chloropyrimidin-5-ylboronic acid (533 mg, 3.27 mmol), Pd(PPh3)4 (158 mg, 0.136 mmol), 2M aqueous sodium carbonate solution (13 mL) and 1,4-dioxan (60 mL). The reaction was stirred at 105°C under nitrogen for 18 h. After this time, PdCl2(dppf) (100 mg, 5 mol %) and a further quantity of 2-chloropyrimidin-5-ylboronic acid (266 mg, 0.5 equiv.) were added. Heating was continued at 105°C for 5 h. The reaction was worked up by the addition of water (50 mL). The aqueous phase was extracted with ethyl acetate (2 x 100 mL) and the combined organic layers were concentrated in vacuo to a black oil. The crude residue was purified by silica flash column chromatography (10-50% ethyl acetate/DCM) to give the title compound (460 mg, 42%) as a pink solid. 5H (d6-DMSO, 400 MHz) 9.12 (2H, s), 8.01 (1H, d, J 1.3 Hz), 7.72 (1H, d, J 8.4 Hz), 7.66-7.53 (2H, m), 7.40-7.35 (1H, m), 7.27 (1H, d, J 7.5 Hz), 7.19-7.13 (1H, m), 6.73-6.71 (1H, m), 5.58
(2H, s), 3H not observed (CH3) under d6-DMSO peak at 2.50 ppm. LCMS (pH 3) 401.6, MH+, RT 1.67 minutes, 100% UV. LCMS (pH 10) 401.6, MH+, RT 2.09 minutes, 94.9% UV. INTERMEDIATE 66
[ 1 -(Bicyclo[4.2.0"|octa- 1 (6),2,4-trien-7-yl)- lH-benzimidazol-2-yllmethanol
From Intermediate 1 and 1-bromobenzocyclobutene in accordance with Method B to give the title compound. δΗ (300 MHz, DMSO-d6) 7.60 (d, 1H, J 8.0 Hz), 7.47 (m, 1H), 7.35 (m, 2H), 7.19 (d, 1H, J7.2 Hz), 7.12 (m, 1H), 6.98 (m, 1H), 6.58 (d, 1H, J 8.2 Hz), 6.38 (dd, 1H, J4.8, 2.4 Hz), 5.67 (t, 1H, J5.8 Hz), 4.82 (m, 2H), 3.89 (dd, 1H, J 14.4, 5.2 Hz), 3.59 (m, 1H). LCMS (ES+) 251 (M+H)+, RT 1.87 minutes (Method 2). INTERMEDIATE 67 l-(Bicyclo[4.2.01octa-l(6),2,4-trien-7-yl)-lH-benzimidazole
From benzimidazole and 1-bromobenzocyclobutene in accordance with Method B to give the title compound which was subsequently utilised without further purification.
INTERMEDIATE 68 l-(l-(r2-(Difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)propan-2-one Intermediate 47 (1.1 g, 3.0 mmol), tri-n-butyltin methoxide (2.8 g, 8.6 mmol), isopropenyl acetate (0.86 g, 8.6 mmol), palladium(II) acetate (0.065 g, 0.29 mmol) and tri-o-tolylphosphine (0.91 g, 3.0 mmol) in toluene (7.5 mL) were heated under microwave irradiation at 100°C for 2 h. The reaction mixture was then diluted with EtOAc (10 mL) and 4M aqueous potassium fluoride solution (5 mL) was added. The reaction mixture was stirred for 10 minutes. The reaction mixture was filtered through celite, then washed three times with EtOAc. The combined organic layers were separated and dried
(Na2S04), then filtered and concentrated in vacuo. The resulting dark oil was purified by chromatography (Si02; 50-100% EtOAc/hexane gradient elution) to give the title compound (0.60 g, 58%) as a brown oil. δΗ (DMSO-d6, 300 MHz) 7.49 (d, 1H, J 8.2 Hz), 7.34-7.41 (m, 1H), 7.34 (t, 1H, J 73.8 Hz), 7.23-7.29 (m, 1H), 7.21 (d, 1H, J 0.8 Hz), 7.14 (td, 1H, J7.6, 1.0 Hz), 6.97 (dd, 1H, J 8.2, 1.5 Hz), 6.65 (dd, 1H, J7.6, 1.2 Hz), 5.44 (s, 2H), 3.76 (s, 2H), 2.47 (s, 3H), 2.06 (s, 3H). LCMS (ES+) 345 (M+H)+, RT 1.68 minutes (pH 10); and (ES+) 345 (M+H)+, RT 1.32 minutes (pH 3). INTERMEDIATE 69
( r)-3-(l-([2-(Difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)-4-(dimethyl- amino)but-3-en-2-one
Intermediate 68 (0.56 g, 1.7 mmol) and N,N-dimethylformamide dimethyl acetal (3 mL) were heated at 60°C for 4 h. The reaction mixture was allowed to cool to room temperature, then concentrated in vacuo. The resulting material was purified by triturating with Et20 (5 mL), then filtered and dried under vacuum, to give the title compound (0.426 g, 62%) as a pale yellow solid. δΗ (DMSO-d6, 300 MHz) 7.45 (d, 1H, J 10.3 Hz), 7.45 (s, 1H), 7.33-7.40 (m, 1H), 7.31 (t, 1H, J 98.4 Hz), 7.22-7.27 (m, 1H), 7.13 (td, 1H, J 10.2, 1.4 Hz), 7.05 (d, 1H, J 1.2 Hz), 6.89 (dd, 1H, J 10.7, 2.0 Hz), 6.72 (dd, 1H, J 10.2, 1.7 Hz), 5.44 (s, 2H), 2.47-2.54 (m, 9H), 1.84 (s, 3H). LCMS (ES+) 400 (M+H)+, RT 1.75 minutes (pH 10); and (ES+) 400 (M+H)+, RT 1.29 minutes (pH 3).
INTERMEDIATE 70 tert-Butyl 4-carbamimidoylpiperidine- 1 -carboxylate
To a solution of tert-butyl 4-carbamoylpiperidine-l -carboxylate (1.0 g, 4.4 mmol) in anhydrous DCM (10 mL) cooled to 0°C was added trimethyloxonium tetrafluoroborate (0.65 g, 4.4 mmol) and the reaction mixture was stirred for 3 h. Ammonia in methanol (7M; 11 mL) was then added, and the reaction mixture was stirred at room temperature for 18 h. The reaction mixture was then concentrated in vacuo to give the title compound (1.4 g, quantitative yield) as a yellow foam. δΗ (DMSO-d6, 400 MHz) 8.25-8.56 (m, 3H), 4.02-4.14 (m, 2H), 2.63-2.79 (m, 2H), 2.58 (tt, J 12.4, 3.4 Hz, 1H), 1.73-1.80 (m, 2H), 1.52-1.64 (m, 2H), 1.41 (s, 9H). LCMS (ES+) 228 (M+H)+, RT 1.06 minutes (pH 10); and (ES+) 228 (M+H)+, RT 0.87 minutes (pH 3).
INTERMEDIATE 71 tert-Butyl 4-[5-(l-([2-(difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)-4- methylpyrimidin-2-yllpiperidine- 1 -carboxylate
Intermediate 70 (0.22 g, 0.56 mmol), Intermediate 69 (0.27 g, 1.2 mmol) and sodium ethoxide (0.058 g, 0.84 mmol) in ethanol (4 mL) were heated under microwave irradiation at 80°C for 6 h, then for 2 h at 100°C, then for 11 h at 130°C. The reaction mixture was concentrated in vacuo. The residue was then dissolved in DCM (20 mL) and washed with water (20 mL). The layers were separated and the aqueous layer was then back-extracted with DCM (3 x 20 mL). The organic layers were combined, passed through a phase separator and concentrated in vacuo. The resulting brown oil was then purified by chromatography (Si02; 50- 100% EtOAc/hexane, then 0-20% MeOH/EtOAc gradient elution) to give the title compound (0.13 g, 43%) as an off-white solid. 5H (DMSO-d6, 300 MHz) 8.51 (s, 1H), 7.66 (d, 1H, J 8.2 Hz), 7.52 (d 1H, J 1.2 Hz), 7.35- 7.41 (m, 1H), 7.31 (t, 1H, J 73.7 Hz), 7.21-7.27 (m, 2H), 7.14-7.19 (m, 1H), 6.82-6.89 (m, 1H), 5.51 (s, 2H), 2.64-3.06 (m, 4H), 2.53 (s, 3H), 2.37 (s, 3H), 2.18-2.30 (m, 1H), 1.89- 1.98 (m, 2H), 1.60-1.73 (m, 2H), 1.42 (s, 9H). LCMS (ES+) 564 (M+H)+, RT 2.68 minutes (pH 10); and (ES+) 508 (M+H-tBu)+, RT 2.43 minutes (pH 3). INTERMEDIATE 72
6-(2-Chloropyrimidin-5 -yl)- 1-1 [2-(difluoromethoxy)phenyllmethyl| -5 -fluoro-2-methyl- benzimidazole
A mixture of Intermediate 50 (0.5 g, 1 mmol), (2-chloropyrimidin-5-yl)boronic acid (0.3 g, 2 mmol), Pd(dppf)Cl2 (0.03 g, 0.04 mmol) and 2M aqueous sodium carbonate solution (2 mL) in 1,4-dioxane (8 mL) was degassed and stirred at 110°C. After 6 h, further (2-chloropyrimidin-5-yl)boronic acid (60 mg) and Pd(dppf)Cl2 (10 mg) were added, and the reaction mixture was degassed and stirred at the same temperature for 4 h. The cooled reaction mixture was partitioned between EtOAc and brine, then the organic layer was dried (MgS04) and concentrated. The crude residue was purified by column chromatography (hexanes:EtOAc, 3:2 to 1 : 1) to afford the title compound (200 mg, 40%) as a white crystalline solid. δΗ (400 MHz, DMSO-d6) 8.98 (d, J 1.5 Hz, 2H), 7.86 (d, J 6.8 Hz, 1H), 7.61 (m, 1H), 7.39 (m, 1H), 7.34 (t, J 72, 76 Hz, 1H), 7.26 (d, J7.7 Hz, 1H), 7.16 (m, 1H), 6.76 (dd, J 7.7, 1.3 Hz, 1H), 5.56 (s, 1H), 2.50 (s, 3H). LCMS (pH 10) MH+ 419, RT 1.53 minutes.
INTERMEDIATE 73
Ethyl 3-r5-(l- (r2-(difluoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol-6- yl)pyrimidin-2-vHbicyclor3.1.01hex-2-ene-6-carboxylate
A mixture of Intermediate 72 (0.2 g, 0.5 mmol), Intermediate 172 (0.2 g, 0.7 mmol), Pd(dppf)Cl2 (20 mg, 24.5 μΜ) and 2M aqueous sodium carbonate solution (2 mL) in 1,4-dioxane (8 mL) was degassed and stirred at 110°C for 1.5 h. The cooled reaction mixture was diluted with EtOAc and washed with brine, then the organic layer was dried (MgS04) and concentrated. The crude residue was purified using column
chromatography (EtOAc:hexanes, 2: 1) to give the title compound (150 mg, 60%) as a colourless gum. δΗ (400 MHz, DMSO-d6) 8.96 (d, J 1.6 Hz, 2H), 7.83 (d, J 6.8 Hz, 1H), 7.63 (m, 1H), 7.38 (t, J72, 76 Hz, 1H), 7.44 (m, 1H), 7.32 (m, 1H), 7.23 (m, 1H), 7.17 (d, J 1.8 Hz, IH), 6.89 (dd, J 7.5, 0.9 Hz, IH), 5.60 (s, 2H), 4.12 (m, 2H), 3.19 (m, IH), 3.05 (m, IH), 2.62 (m, IH), 2.50 (s, 3H), 2.39 (m, IH), 1.33 (m, IH), 1.26 (m, 4H). LCMS (pH 10) MH+ 535, RT 1.61 minutes. INTERMEDIATE 74
Ethyl 3-[5-(l-([2-(difluoromethoxy)phenyllmethyl|-5-fluoro-2-methylbenzimidazol-6- yl)pyrimidin-2-yl"|bicyclo[3.1.0]hexane-6-carboxylate
10% Palladium on charcoal (20 mg) was added to a solution/suspension of Intermediate 73 (150 mg, 0.28 mmol) and triethylamine (40
Figure imgf000124_0001
0.287 mmol) in ethanol (4 mL). The reaction mixture was flushed with hydrogen and hydrogenated at normal pressure overnight. The reaction mixture was filtered through celite, concentrated and purified by column chromatography (EtOAc:hexanes, 3:2) to give the title compound (0.14 g, 93%) as a clear gum. δΗ (400 MHz, DMSO-d6) 8.94 (m, 2H), 7.83 (m, IH), 7.58 (m, IH), 7.38 (m, IH), 7.33 (t, J 72, 76 Hz, IH), 7.27 (m, IH), 7.16 (m, IH), 6.79 (m, IH), 5.56 (s, 2H), 4.01 (m, 2H), 3.74 (m, IH), 2.50 (s, 3H), 2.42 (m, 3H), 1.88 (m, 2H), 1.42 (m, IH), 1.14 (m, 4H). LCMS (pH 10) MH+ 537, RT 1.61 minutes.
INTERMEDIATE 75
6-Bromo- 1 - { [5-chloro-2-(difluoromethoxy)phenyllmethyl| -5 -fluoro-2-methyl- benzimidazole
Step 1: To a stirred solution of l-bromo-2,5-difluoro-4-nitrobenzene (9.8 g, 0.04 mol) and [5-chloro-2-(difluoromethoxy) phenyljmethanamine hydrochloride (10 g, 0.04 mol) in ethanol (100 mL) was added triethylamine (12.47 g, 0.123 mol) at 0°C. The reaction mass was heated at 80°C for 16 h. The reaction mixture was concentrated under vacuum. The crude mass was purified by hexane wash (2 x 100 mL) to obtain 5-bromo- N-[5-chloro-2-(dtfluoromethoxy)benzyl]-4-fluoro-2-nitroaniline (15 g, 88%) as a yellow solid. δΗ (400 MHz, CDC13) 8.22 (br s, IH), 7.99 (d, J 6.4 Hz, IH), 7.33-7.31 (m, 2H), 7.15 (d, J7.6 Hz, IH), 6.99 (d, J 6.0 Hz, IH), 6.60 (t, J 72.8 Hz, IH), 4.54 (d, J 6.4 Hz, 2H).
Step 2: To a stirred solution of the foregoing material (15 g, 0.035 mol) in MeOH (100 mL) at 0°C were added zinc (13.76 g, 0.211 mol) and ammonium formate (13.34 g, 0.211 mol). The reaction mixture was stirred at 25-28°C for 1 h. The reaction mixture was filtered through a celite bed and washed with methanol (200 mL). The filtrate was concentrated under vacuum. The residue was purified by column chromatography, using 100-200 mesh silica gel and 10% ethyl acetate in hexane as an eluent, to afford 5-bromo- N1 -[5-chloro-2-(difluoromethoxy)benzyl] -4-fluorobenzene-l ,2-diamine (12.1 g) as a brown gum. δΗ (400 MHz,CDCl3) 7.39 (d, J2.4 Hz, 1H), 7.29-7.27 (m, 1H), 7.11 (d, J 8.4 Hz, 1H), 6.69 (d, J6.4 Hz, 2H), 6.56 (t, J 73.2 Hz, 1H), 4.25 (s, 2H), 3.55 (br s, 3H). LCMS M+ 397, RT 3.24 minutes.
Step 3: A solution of the foregoing material (12.10 g, 0.0306 mol) in acetic acid (150 mL) was heated under reflux at 100°C for 16 h. The reaction mixture was concentrated under vacuum. The residue was basified with aqueous sodium bicarbonate solution (50 mL) and extracted with ethyl acetate (2 x 500 mL). The organic layer was dried over anhydrous Na2S04, filtered and concentrated under vacuum. The residue thus obtained was purified by column chromatography, using 100-200 mesh silica gel and 60% ethyl acetate in hexane as an eluent, to afford the title compound (6 g, 50%) as a brown solid. δΗ (400 MHz,CDCl3) 7.48 (d, J 8.4 Hz, 1H), 7.33-7.29 (m, 2H), 7.16 (d, J 8.4 Hz, 1H), 6.63 (t, J72.8 Hz, -OCHF2, 1H), 6.53 (d, J2.8 Hz, 1H), 2.54 (s, 3H), 2.04 (s, 2H). LCMS M+ 421.0, RT 2.73 minutes. INTERMEDIATE 76
Ethyl 4-[5-(l-([5-chloro-2-(difluoromethoxy)phenyllmethyl|-5-fluoro-2-methyl- benzimidazol-6-yl)pyrimidin-2-yl1cvclohex-3-ene-l-carboxylate
A mixture of Intermediate 75 (1 g, 2.383 mmol), Intermediate 178 (1.195 g, 3.336 mmol), Pd(dppf)Cl2 (0.0496 g, 0.0595 mmol) and 2M aqueous sodium carbonate solution (2.5 mL) in 1,4-dioxane (15 mL) was degassed and stirred at 110°C for 2 h. The reaction mixture was partitioned between EtO Ac/brine, then the aqueous layer was extracted using EtOAc. The combined organic extracts were washed with brine, dried (MgS04) and concentrated. The crude material was purified by column chromatography (EtO Ac:
hexanes, 1 : 1 to 3 :2) giving a crystalline residue which was triturated in diethyl ether, filtered, washed with diethyl ether/hexanes and dried, to give the title compound (1.1 g, 81%) as a pale yellow solid. δΗ (400 MHz, DMSO-d6) 8.95 (d, J 1.6 Hz, 2H), 7.83 (d, J 6.8 Hz, 1H), 7.58 (m, 1H), 7.49 (m, 1H), 7.33 (t, J 72, 76 Hz, 1H), 7.31 (m, 2H), 6.87 (d, J2.6 Hz, 1H), 5.55 (s, 2H), 4.12 (m, 2H), 2.79 (m, 1H), 2.65 (m, 1H), 2.50 (s, 3H), 2.55 (m, 3H), 2.12 (m, 1H), 1.73 (m, 1H), 1.21 (m, 3H). LCMS (pH 10) MH+ 571, RT 1.68 minutes. INTERMEDIATE 77
Ethyl 4-[5-(l-([5-chloro-2-(difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6- yl)pyrimidin-2-yllcyclohex-3-ene-l-carboxylate
A mixture of Intermediate 49 (1 g, 2.490 mmol), Intermediate 178 (1.249 g, 3.487 mmol), Pd(dppf)Cl2 (0.0519 g, 0.0623 mmol) and 2M aqueous sodium carbonate solution in 1,4-dioxane (15 mL) was degassed and stirred at 110°C for 5 h. The reaction mixture was partitioned between EtO Ac/brine, then the aqueous layer was extracted using EtOAc. The combined organic extracts were washed with brine, dried (MgS04), concentrated and columned (EtO Ac: hexanes, 2: 1 to 3:1). The resulting material was crystallised from diethyl ether, stored in a refrigerator overnight, filtered, then washed with diethyl ether/ hexanes and dried, to give the title compound (1.16 g, 84%) as an off- white solid. 5H (400 MHz, DMSO-dg) 9.09 (s, 2H), 7.96 (d, J 1.1 Hz, 1H), 7.70 (m, 1H), 7.63 (m, 1H), 7.48 (dd, J 8.8, 2.6 Hz, 1H), 7.36 (t, J72, 76 Hz, 1H), 7.33 (m, 1H), 7.27 (m, 1H), 6.83 (d, J 2.5 Hz, 1H), 5.57 (s, 2H), 4.12 (m, 2H), 2.78 (m, 1H), 2.67 (m, 1H), 2.50 (s, 3H), 2.49 (m, 3H), 2.12 (m, 1H), 1.74 (m, 1H), 1.22 (t, J7.1 Hz, 3H). LCMS (pH 10) MH+ 553, RT 1.63 minutes.
INTERMEDIATE 78 Ethyl 4-r5-(l- (r2-(difluoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol-6- yl)pyrimidin-2-yl"|cyclohex-3-ene-l-carboxylate
A mixture of Intermediate 50 (0.35 g, 0.91 mmol), Intermediate 178 (0.46 g, 1.3 mmol), Pd(dppf)Cl2 (19 mg, 0.023 mmol) and 2M aqueous sodium carbonate solution (4 mL) in 1,4-dioxane (10 mL) was degassed and stirred at 110°C for 1.5 h. The cooled reaction mixture was diluted with EtO Ac and washed with brine, then the organic layer was dried (MgS04) and concentrated. The crude material was purified by column chromatography (EtOAc:hexanes, 1 :1 to 3:2). The resulting material was crystallised from diethyl ether, filtered, washed with diethyl ether/hexanes and dried, to give the title compound (0.245 g, 50%) as a cream solid. δΗ (400 MHz, DMSO-d6) 8.93 (d, J 1.5 Hz, 2H), 7.79 (d, J 6.8 Hz, 1H), 7.57 (m, 1H), 7.40 (m, 1H), 7.33 (t, J 72, 76 Hz, 1H), 7.27 (m, 2H), 7.17 (m, 1H), 6.82 (m, 1H), 5.56 (s, 2H), 4.11 (m, 2H), 2.76 (m, 1H), 2.66 (m, 1H), 2.50 (m, 3H), 2.49 (m, 3H), 2.12 (m, 1H), 1.74 (m, 1H), 1.21 (t, J 7.1 Hz, 3H).
LCMS (pH 10) MH+ 537, RT 1.62 minutes.
INTERMEDIATE 79
Ethyl 4-r5-(l- (r2-(dinuoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol-6- yl)pyrimidin-2-vHcvclohexanecarboxylate
Intermediate 78 (245 mg, 0.47 mmol) and 10% palladium on charcoal (50 mg) in MeOH (12 mL) was degassed and hydrogenated at normal pressure for 40 h. The reaction mixture was filtered through celite and was washed with MeOH. The combined filtrate and washings were concentrated and purified by column chromatography (EtOAc: hexanes, 1 : 1 to 3:2), to give the title compound (0.24 g, 98%) as a colourless gum. 1H NMR showed two isomers in a ratio of 2.5: 1. δΗ (400 MHz, DMSO-d6) 8.90 (m, 2H), 7.79 (m, 1H), 7.57 (m, 1H), 7.39 (m, 1H), 7.32 (t, J 72, 76 Hz, 1H), 7.26 (m, 1H), 7.18 (m, 1H), 6.79 (m, 1H), 5.55 (s, 2H), 4.09 (m, 2H), 2.99 (m, 1H), 2.66 (m, 1H), 2.50 (s, 3H), 1.99 (m, 4H), 1.84 (m, 2H), 1.69 (m, 2H), 1.20 (m, 3H). LCMS (pH 10) MH+ 539, RT 1.62 minutes.
INTERMEDIATE 80
Methyl 4-r5-(l- (r2-(difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-yl1cvclohex-3-ene-l-carboxylate
A mixture of Intermediate 65 (0.15 g, 0.37 mmol), Intermediate 177 (0.15 g, 0.56 mmol), Pd(dppf)Cl2 (8 mg, 0.001 mmol) and 2M aqueous sodium carbonate solution (2 mL) in 1,4-dioxane (8 mL) was degassed and stirred at 110°C for 1.5 h. The reaction mixture was partitioned between EtO Ac/brine, then the organic extract was dried
(MgS04). The material crystallised out on evaporation of the solvent and was triturated in diethyl ether, filtered, washed with diethyl ether and dried to give the title compound (0.164 g, 87%) as an off-white solid. δΗ (400 MHz, DMSO-d6) 9.08 (s, 2H), 7.93 (d, J 1.2 Hz, 1H), 7.70 (m, 1H), 7.62 (m, 1H), 7.38 (m, 1H), 7.27 (d, J 7.6 Hz, 2H), 7.16 (m, 1H), 7.35 (t, J 72, 76 Hz, 1H), 6.80 (m, 1H), 5.57 (s, 2H), 3.65 (s, 3H), 2.70 (m, 2H), 2.59 (s, 3H), 2.49 (m, 3H), 2.11 (m, 1H), 1.73 (m, 1H). LCMS (pH 10) MH+ 505, RT 1.50 minutes. INTERMEDIATE 81
Methyl 4-[5-(l-([2-(difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-yl"|cyclohexanecarboxylate
Intermediate 80 (0.164 g, 0.325 mmol) and 10% palladium on charcoal (20 mg) in MeOH (8 mL) was degassed and hydrogenated at normal pressure overnight. Further 10%) palladium on charcoal (30 mg) was added, and the reaction mixture was degassed and hydrogenated at 50°C for 6 h. The reaction mixture was filtered through celite, concentrated and columned, using first 4: 1 EtOAc-hexane, then EtOAc, to give the title compound (130 mg, 79%) as a colourless gum. δΗ (400 MHz, DMSO-d6) 9.03 (m, 2H), 7.90 (d, J 1.2 Hz, 1H), 7.69 (m, 1H), 7.58 (m, 1H), 7.39 (m, 1H), 7.35 (t, J 72, 76 Hz, 1H), 7.26 (m, 1H), 7.16 (m, 1H), 6.78 (d, J7.6 Hz, 1H), 5.56 (s, 2H), 3.61 (s, 3H), 2.98 (m, 1H), 2.68 (m, 1H), 2.50 (s, 3H), 1.98 (m, 4H), 1.82 (m, 2H), 1.68 (m, 2H). LCMS (pH 10) MH+ 507, RT 1.48 minutes. INTERMEDIATE 82
Ethyl 3-[5-(l-([2-(difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-vH-3-azabicvclor4.1.Olheptane-l-carboxylate
A mixture of Intermediate 47 (0.16 g, 0.44 mmol), [2-(l-ethoxycarbonyl-3- azabicyclo[4.1.0]heptan-3-yl)pyrimidin-5-yl]boronic acid (0.19 g, 0.65 mmol),
Pd(dppf)Cl2 (0.0091 g, 0.011 mmol) and 2M aqueous sodium carbonate solution (2 mL) in 1,4-dioxane (8 mL) was degassed and stirred at 110°C for 1.5 h. The reaction mixture was partitioned between EtO Ac/brine. The organic layer was dried (MgS04) and concentrated. The crude residue was purified by column chromatography (EtOAc:
hexanes, 2: 1 to 4:1) and the material was crystallised from diethyl ether, filtered, washed with diethyl ether/hexanes and dried, to give the title compound (0.14 g, 60%>) as a white crystalline solid. δΗ (400 MHz, DMSO-d6) 8.68 (m, 2H), 7.69 (d, J 1.2 Hz, 1H), 7.61 (m, 1H), 7.43 (dd, J 8.3, 1.6 Hz, 1H), 7.39 (m, 1H), 7.35 (t, J 72, 76 Hz, 1H), 7.27 (m, 1H), 7.17 (m, 1H), 6.79 (m, 1H), 5.54 (m, 2H), 4.35 (m, 1H), 4.27 (m, 1H), 4.09 (m, 2H), 3.70 (m, 1H), 3.41 (m, 1H), 2.50 (s, 3H), 2.11 (m, 1H), 1.81 (m, 1H), 1.72 (m, 1H), 1.27 (m, 1H), 1.19 (t, J 7.1 Hz, 3H), 0.83 (dd, J 6.4, 4.5 Hz, 1H). LCMS (pH 10) MH+ 534, RT 1.58 and 1.55 minutes.
INTERMEDIATE 83
Methyl (li?)-3-[5-(l-([2-(difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-vH-3-azabicyclor3.1.Olhexane- 1 -carboxylate
A mixture of Intermediate 65 (0.2 g, 0.5 mmol), methyl (li?)-3-azabicyclo[3.1.0]- hexane-1 -carboxylate hydrochloride (0.1 g, 0.6 mmol) and triethylamine (0.1 g, 1 mmol) in ethanol (6 mL) was stirred at 80°C for 5 h. Further triethylamine (0.1 mL) was added and the reaction mixture was stirred at the same temperature for a further 8 h. The reaction mixture was concentrated and the residue was partitioned between EtO Ac/brine. The organic layer was washed once more with brine, then dried (MgSC^), to give the title compound (0.23 g, 90%) as a white foam. δΗ (400 MHz, DMSO-d6) 8.66 (s, 2H), 7.68 (s, 1H), 7.61 (d, J 8.3 Hz, 1H), 7.39 (m, 2H), 7.35 (t, J 78 Hz, 1H), 7.27 (d, J 8.1 Hz, 1H), 7.16 (m, 1H), 6.80 (d, J7.6 Hz, 1H), 5.53 (s, 2H), 3.96 (m, 1H), 3.86 (m, 2H), 3.67 (s, 3H), 3.59 (m, 1H), 2.50 (s, 3H), 2.25 (m, 1H), 1.55 (dd, J 8.3, 4.5 Hz, 1H), 0.96 (t, J5.0 Hz, 1H). LCMS (pH 10) MH+ 506, RT 1.51 minutes.
INTERMEDIATE 84 iremovedl INTERMEDIATE 85
(2-[(li?,56',8r)-8-Methoxycarbonyl-3-azabicyclo[3.2.11octan-3-yllpyrimidin-5-yl|boronic acid
Methyl (li?,55',8r)-3-(tert-butoxycarbonyl)-3-azabicyclo[3.2.1]octane-8- carboxylate (9.0 g, 35.3 mmol) was suspended in HC1 solution (2.25M in MeOH) and the reaction mixture was heated to reflux for 4 h. The reaction mixture was allowed to cool to r.t. and then concentrated in vacuo to give a white solid. (2-Chloropyrimidin-5- yl)boronic acid (5.58 g, 35.2 mmol) was added and the mixture was suspended in EtOH (130 mL). Triethylamine (9.90 mL, 70.5 mmol) was added and the reaction mixture was heated at 80°C for 5 h. The reaction mixture was allowed to cool to r.t. and then water was added (30 mL). The reaction mixture was concentrated to around one third volume, then more water (100 mL) was added. An off-white solid precipitated out, which was filtered and washed with water (2 x 30 mL), to afford the title compound (8.9 g, 86%) as an off-white powder. δΗ (300 MHz, d6-DMSO) 8.59 (2H, s), 8.02 (2H, s), 4.45 (2H, dd, J 13.1, 3.4 Hz), 3.62 (3H, s), 2.98 (2H, br d, J 12.4 Hz), 2.77 (IH, s), 2.59 (2H, br s), 1.66- 1.63 (2H, m), 1.38-1.33 (2H, m). HPLC-MS (pHIO): MH+ mlz 292, RT 0.97 minutes.
INTERMEDIATE 86
MethvUli?,56'.8r -3-r5-(l-(r2-(difiuoromethoxy phenyl1methyl|-5-fiuoro-2-methyl- benzimidazol-6-yl)pyrimidin-2-yll-3-azabicyclo[3.2.1 ]octane-8-carboxylate
Intermediate 50 (500 mg, 1.17 mmol), Intermediate 85 (510 mg, 1.75 mmol) and 2M aqueous K3P04 solution (2.0 mL) were suspended in 1,4-dioxane (12 mL). The mixture was degassed (evacuated and re-filled with nitrogen 3 times). Bis[3-(diphenyl- phosphanyl)cyclopenta-2,4-dien-l-yl]iron dichloropalladium dichloromethane complex (48 mg, 0.06 mmol) was added and the mixture was again degassed, then heated at 90°C for 36 h. The mixture was cooled to r.t., diluted with water (50 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with water (20 mL), dried over Na2S04 and purified by silica gel chromatography, eluting with 35-100%) ethyl acetate in isohexane, to afford the title compound (325 mg, 50%>) as an off-white solid. 5H (400 MHz, dg-DMSO) 8.50 (2H, d, J 1.7 Hz), 7.60 (IH, d, J 7.0 Hz), 7.48 (IH, d, J 11.4 Hz), 7.40-7.34 (IH, m), 7.32 (IH, t, J 73.8 Hz), 7.25 (IH, dd, J 8.2, 0.7 Hz), 7.16 (IH, td, J 7.6, 1.1 Hz), 6.80 (IH, dd, J 8.0, 1.9 Hz), 5.51 (2H, s), 4.46-4.40 (2H, m), 3.63 (3H, s), 3.28 (3H, s), 3.03 (2H, br d, J 12.7 Hz), 2.79 (IH, br s), 2.62 (2H, br s), 1.70-1.65 (2H, m), 1.43-1.38 (2H, m). LCMS (pH 10): MH+ mlz 552, RT 2.35 minutes.
INTERMEDIATE 87 tert-Butyl 4-ethyl 4-methylpiperidine-l,4-dicarboxylate
To tert-butyl -4-ethyl piperidine-l,4-dicarboxylate (10.03 g, 39.0 mmol), dissolved in THF (50 mL) and cooled to 0°C in an ice bath under nitrogen, was added dropwise LDA (2M solution in THF; 25.0 mL, 50 mmol). The mixture was stirred at 0°C for 40 minutes. lodomethane (3.2 mL, 51 mmol) was then added, and the mixture was stirred at 0°C for 3 h before warming to r.t. The reaction mixture was left to stand at r.t. for 2 h. EtOAc (150 mL) was added and the mixture was washed with brine (2 x 100 mL). The organic layer was separated, dried (Na2S04), and filtered under reduced pressure. The solvent was removed in vacuo to yield a brown oil which was purified by flash column chromatography on silica, using 100% isohexane to 100% EtOAc, followed by concentration in vacuo, to afford the title compound (7.92 g, 75%) as an orange oil. 5H (300 MHz, DMSO-dg) 4.10 (q, J 7.1 Hz, 2H), 3.60 (dt, J 13.6, 4.4 Hz, 2H), 2.94 (br t, J 11.7 Hz, 2H), 1.95-1.84 (m, 2H), 1.39 (s, 9H), 1.30 (ddd, J 14.0, 10.2, 4.1 Hz, 2H), 1.18 (t, J7.1 Hz, 3H), 1.14 (s, 3H).
INTERMEDIATE 88
Ethyl 4-methylpiperidine-4-carboxylate
To Intermediate 87 (7.92 g, 29.2 mmol) dissolved in DCM (50 mL) was added
2M HCl in diethyl ether (31.0 mL). The mixture was stirred at r.t. overnight. The solvent was removed in vacuo to afford the title compound (6.16 g, 102%) as an orange/brown solid. δΗ (300 MHz, DMSO-d6) 8.70 (br s, 2H), 4.13 (t, J7.1 Hz, 2H), 3.24-3.11 (m, 2H), 2.93-2.75 (m, 2H), 2.13-2.02 (m, 2H), 1.61 (ddd, J 14.5, 10.6, 4.1 , 2H), 1.20 (t, J 7.1 Hz, 3H), 1.19 (s, 3H).
INTERMEDIATE 89 r2-(4-Ethoxycarbonyl-4-methylpiperidin-l-yl)pyrimidin-5-yl1boronic acid
To (2-chloropyrimidin-5-yl)boronic acid (4.00 g, 25.3 mmol) were added
Intermediate 88 (4.09 g, 23.9 mmol) and ethanol (40 mL). Triethylamine (9.0 mL, 64 mmol) was added and the mixture was heated at 80°C for 3 h before concentrating in vacuo. The mixture was partitioned between water (100 mL) and EtOAc (100 mL). The aqueous layer was separated and re-extracted with EtOAc (2 x 100 mL). The organic layers were combined and washed with brine (100 mL) before separating, drying
(Na2S04), filtering under reduced pressure and removing the solvent in vacuo. The resulting brown foam was purified by column chromatography on silica, using 100%) DCM to 30% MeOH/DCM, to afford the title compound (4.00 g, 74% purity) as a brown oil. LCMS (pH 10): MH+ mlz 294, RT 0.65 minutes (74%).
INTERMEDIATE 90
6-Bromo- 1 - { r2-chloro-6-(difluoromethoxy)phenyl1methyl| -2-methylbenzimidazole
The title compound was synthesized according to the procedure described for Intermediate 47 commencing with 6-chloro-2-(difluoromethoxy)benzylamine. LCMS (pH 10): (M+H)+ mlz 403 and 401, RT 3.58 minutes.
INTERMEDIATE 91
4- r(6-Bromo-2-methylbenzimidazol- 1 -vDmethyll -2-methyl-5 -(trifluoromethyl)thiazole The title compound was synthesized according to the procedure described for Intermediate 47 commencing with [2-methyl-5-(trifluoromethyl)thiazol-4-yl]- methanamine. LCMS (pH 10): (M+H)+ mlz 390 and 391, RT 2.65 minutes.
INTERMEDIATE 92 Methyl ( 16'.5i?.8r -3-r5-(l-(r5-chloro-2-(difluoromethoxy phenyl1methyl|-5-fiuoro-2- methylbenzimidazol-6-yllpyrimidin-2-yll-3-azabicyclo[3.2.1 ]octane-8-carboxylate
Intermediate 75 (501 mg, 1.19 mmol), Intermediate 85 (523 mg, 1.80 mmol) and l,l '-bis(diphenylphosphino)ferrocene palladium(II) dichloride dichloromethane complex (50 mg, 0.061 mmol) were suspended in 1,4-dioxane (10 mL) and 2M aqueous potassium phosphate tribasic solution (2 mL). The reaction mixture was degassed (vacuum/ nitrogen) and then heated under nitrogen at 100°C for 3 h. The reaction mixture was cooled to r.t. overnight. The reaction mixture was then diluted with EtOAc (50 mL) and washed with water (2 x 50 mL). The aqueous layer was back-extracted with EtOAc (2 x 50 mL). The combined organic layer was washed with brine (50 mL), dried (Na2S04), filtered and concentrated in vacuo to a brown foam. The crude material was purified by column chromatography (Si02, 25-75% EtOAc in hexanes) and the resulting material was freeze-dried from acetonitrile/water to give the title compound (488 mg, 69%) as an off- white solid. δΗ (DMSO-d6) 8.52 (d, 2H, J 1.7 Hz), 7.64 (d, 1H, J 7.0 Hz), 7.44-7.53 (m, 2H), 7.32 (t, 1H, J 73.4 Hz), 7.27-7.32 (m, 1H), 6.83 (d, 1H, J2.5 Hz), 5.51 (s, 2H), 4.44 (dd, 2H, J 13.0, 3.5 Hz), 3.63 (s, 3H), 3.27-3.33 (m, 3H) (CH3 group under water peak, confirmed by D20 shake), 3.00-3.07 (m, 2H), 2.79-2.81 (s, 1H), 2.59-2.66 (m, 2H), 1.63- 1.72 (m, 2H),1.36-1.46 (m, 2H). LCMS (ES+) 587 (M+H)+, RT 2.81 minutes.
INTERMEDIATE 93
6-(6-Chloro-4-methylpyridin-3-yl)- 1 - ( [2-(difluoromethoxy)phenyllmethyl| -2-methyl- benzimidazole
Intermediate 47 (2.01 g, 5.47 mmol) and (6-chloro-4-methylpyridin-3-yl)boronic acid (1.12 g, 6.53 mmol) were dissolved in 1,4-dioxane (20 mL). Tripotassium phosphate (1 mL, 2.0 mmol) was added and the mixture was degassed with three cycles of vacuum and nitrogen. After addition of tetrakis(triphenylphosphine)palladium(0) (3 mol %), the reaction mixture was heated to 80°C for 3 h. Further (6-chloro-4-methylpyridin-3-yl)- boronic acid (935 mg, 5.45 mmol) was added and the reaction mixture was heated for 2 h. After cooling to room temperature the reaction mixture was filtered through celite, washing with ethyl acetate. Water was added and the aqueous layer was extracted with ethyl acetate. The combined organic phase was dried over sodium sulphate, filtered and concentrated in vacuo. Purification by flash column chromatography (Biotage SNAP lOOg, Isolera), eluting with 5-10% EtOH/DCM, yielded the title compound (1.57 g, 69%). δΗ (300 MHz, dg-DMSO) 8.19 (s, 1H), 7.64 (d, J 8.3 Hz, 1H), 7.49 (s, 1H), 7.45 (d, J 1.1 Hz, 1H), 7.37 (m, 1H), 7.32 (t, J 73.8 Hz, 1H), 7.24 (dd, J 8.1, 0.6 Hz, 1H), 7.17 (dd, J 8.3, 1.6 Hz, 2H), 6.83 (dd, J 7.6, 1.4 Hz, 1H), 5.51 (s, 2H), 2.52 (s, 3H), 2.21 (s, 3H). LC-MS (pH 3) MH+ mlz 414.2, RT 1.40 minutes. LC-MS (pHIO) MH+ mlz 414.2, RT 1.52 minutes.
INTERMEDIATE 94 l-(5-Boronopyrimidin-2-yl)-4-(tert-butoxycarbonylamino)piperidine-4-carboxylic acid
The title compound can be prepared by reaction of 4-(tert-butoxycarbonylamino)- piperidine-4-carboxylic acid with (2-chloropyrimidin-5-yl)boronic acid in accordance with the procedure described for Intermediate 89. INTERMEDIATE 95 l-[(2,5-Dimethylphenyl)methyllbenzimidazole-6-carbonitrile
The title compound can be synthesised from 4-cyano-2-fluoronitrobenzene and 2,5-dimethylbenzylamine according to the procedure described for Intermediates 41 and 42, followed by cyclisation with formic acid according to Method J.
INTERMEDIATE 96 Methyl 3-(2,5-dimethylbenzylamino)-4-nitrobenzoate
Prepared from methyl 3-fluoro-4-nitrobenzoate and 2,5-dimethylbenzylamine by the method described for Intermediate 16. The title compound (2 g, 63%) was obtained as a yellow solid. δΗ (300 MHz, DMSO-d6) 8.45 (br s, 1H), 8.19 (d, J 8.8 Hz, 1H), 7.44 (d, J 1.6 Hz, 1H), 7.15 (dd, J 8.8, 1.6 Hz, 1H), 7.11 (s, 1H), 7.09 (d, J6.0 Hz, 1H), 6.99 (d, J7.2 Hz, 1H), 4.57 (d, J 6.0 Hz, 2H), 3.83 (s, 3H), 2.32 (s, 3H), 2.21 (s, 3H).
INTERMEDIATE 97
Methyl 4-amino-3-(2,5-dimethylbenzylamino)benzoate
Prepared from Intermediate 96 by the method described for Intermediate 17, giving the title compound (1 g, 56%>) as an off white solid. 5H (300 MHz, DMSO-d6) 7.14 (d, J 8.0 Hz, 1H), 7.11 (s, 1H), 7.07 (d, J 7.6 Hz, 1H), 6.97 (d, J7.6 Hz, 1H), 6.94 (s, 1H), 6.55 (d, J7.6 Hz, 1H), 5.51 (br s, 2H), 5.00 (t, J 5.2 Hz, 1H), 4.19 (d, J4.8 Hz, 2H), 3.69 (s, 3H), 2.29 (s, 3H), 2.22 (s, 3H). LCMS [M+H]+ mlz 285, RT 3.45 minutes.
INTERMEDIATE 98
Methyl 1 -(2,5-dimethylbenzyl)-2-(hvdroxymethyl)- lH )enzor limidazole-6-carboxylate Prepared by cyclisation of Intermediate 97 with gly colic acid in accordance with Method J, giving the title compound (0.7 g, 70%>) as a brown solid. 5H (300 MHz,
DMSO-dg) 7.95 (s, 1H), 7.84 (dd, J 8.6, 1.2 Hz, 1H), 7.75 (d, J 8.4 Hz, 1H), 7.13 (d, J7.2 Hz, 1H), 6.97 (d, J6.8 Hz, 1H), 6.12 (s, 1H), 5.68 (br s, 1H), 5.61 (s, 2H), 4.66 (d, J 6.0 Hz, 2H), 3.81 (s, 3H), 2.34 (s, 3H), 2.63 (s, 3H). LCMS mlz 325, RT 2.95 minutes. INTERMEDIATE 99 l-[(2,5-Dimethylphenyl)methyll-2-(hydroxymethyl)benzimidazole-6-carboxyli acid
To a stirred solution of Intermediate 98 (0.72 g, 0.002 mmol) in THF (10 mL) was added LiOH (0.281 g, 0.007 mmol) in water (5mL), followed by stirring at 25-31°C for 18 h. The reaction mixture was concentrated in vacuo. The residue was taken up in water (15 mL) and washed with ethyl acetate (three portions of 20 mL). The aqueous layer was acidified by the addition of aqueous HC1 solution. The resulting solid precipitate was collected by filtration and dried in vacuo, to afford the title compound (0.51 g, 73%) as a pink solid. δΗ (300 MHz, DMSO-d6) 7.92 (s, 1H), 7.82 (d, J 8.8 Hz, 1H), 7.71 (d, J 8.0 Hz, 1H), 7.13 (d, J7.2 Hz, 1H), 6.96 (d, J 7.6 Hz, 1H), 6.11 (s, 1H), 5.59 (s, 2H), 4.68 (s, 2H), 2.35 (s, 3H), 2.02 (s, 3H). LCMS mlz 311, RT 2.39 minutes.
INTERMEDIATE 100 l-[(2,5-Dichlorophenyl)methyll-2-methylbenzimidazole-6-carboxylic acid
The title compound can be synthesized by analogous procedures to those described for the synthesis of Intermediate 99, starting from 2,5-dichlorobenzylamine.
INTERMEDIATE 101 l-r(2,5-Dichlorophenyl)methyl1-2-methylbenzimidazol-6-ol
To a stirred solution of Example 1013 (3 g, 0.009 mol) in DCM (20 mL) cooled to -78°C was added BBr3 (2.65 mL, 0.028 mol) and the reaction mixture was stirred at -78°C for 10 minutes, then 25-28°C for 3 h. The reaction mixture was quenched with saturated sodium bicarbonate solution and extracted with DCM (3 x 30 mL). The combined organic layer was dried over Na2S04 and concentrated. The crude residue was purified by column chromatography, using 100-200 mesh silica gel and 3% methanol in DCM as an eluent, to obtain the title compound (2.5 g, 87%) as a pink solid. 5H (DMSO-d6) 10.05 (br s, 1H), 7.66-7.63 (m, 2H), 7.52 (dd, J 6.4, 2.0 Hz, 1H), 7.29 (s, 1H), 7.04 (dd, J 6.8, 2.0 Hz, 1H), 6.82 (d, J2.0 Hz, 1H), 5.69 (s, 2H), 2.82 (s, 3H). LCMS mlz 307, RT 2.43 minutes. INTERMEDIATE 102 fert-Butyl 3-(l-[(2,5-dichlorophenyl)methyl]-2-m
carboxylate
To a solution of Intermediate 101 (0.2 g, 0.65 mmol) in DMF (4 mL) was added CS2CO3 (0.635 g, 1.95 mmol) and the resulting mixture was stirred for 10 minutes followed by addition of tert-butyl 3-iodoazetidine-l-carboxylate (0.174 g, 0.781 mmol). The reaction mixture was heated at 100°C for 16 h. The reaction mixture was diluted with water (5 mL) and extracted with ethyl acetate (3 x 10 mL). The combined organic layer was washed with brine (2 x 20 mL), dried over Na2S04, filtered and concentrated. The crude residue was purified by column chromatography, using 100-200 mesh size silica gel and 5% MeOH in DCM as eluent. INTERMEDIATE 103
1 - [(2,5 -DichlorophenyDmethyl] -2-methylbenzimidazol-5 -ol
The title compound was prepared from l-fluoro-4-methoxy-2 -nitrobenzene following the method described for Intermediate 101. LCMS [M+H]+ mlz 307, RT 1.92 minutes.
INTERMEDIATE 104 fert-Butyl 2-(2-chloropyridin-4-yloxy)acetate
2-Chloropyridin-4-ol (12 g, 93 mmol) was dissolved in DMF (450 mL) and cooled to 0°C. NaH (4.45 g, 111 mmol) was added and the mixture was stirred for 30 minutes. tert-QvXyl 2-bromoacetate (19.51 g, 100 mmol) was added dropwise and the resulting solution was stirred at 0°C for 2 h. The reaction mixture was diluted with water and extracted with 3 portions of EtOAc. The combined organic layers were washed with brine (3 times), dried over sodium sulfate and concentrated in vacuo. The crude material was purified over silica gel (0-10% MeOH in DCM) to obtain the title compound (17.1 g, 70% yield, 92% purity) as a yellowish oil. LCMS (acid): [M+H]+ 244, RT 1.97 minutes. INTERMEDIATE 105
2-|Y2-Chloropyridin-4-yl)oxy]acetic acid trifluoroacetic acid salt
Intermediate 104 (9.6 g, 39.4 mmol) was dissolved in DCM (100 mL). TFA (65.1 g, 571 mmol, 44 mL) was added and the solution was stirred for 48 h. The mixture was concentrated in vacuo and co-evaporated with toluene to obtain the title compound (19.0 g, 61%) as a yellow oil. LCMS (base): [M+H]+ 188, RT 0.49 minutes. δΗ (400 MHz, DMSO-dg) 15.00-12.00 (br s, 4H), 8.22 (d, J5.8 Hz, 1H), 7.13 (d, J2.2 Hz, 1H), 7.01 (dd, J2.2, 5.8 Hz, 1H), 3.88 (s, 2H).
INTERMEDIATE 106
Methyl 2-r(2-chloropyridin-4-yl)oxy1acetate
Intermediate 105 (6.84 g, 22.68 mmol) was dissolved in anhydrous toluene (200 mL), anhydrous MeCN (200 mL) and DMF (0.094 mg, 1.286 μπιοΐ, 0.1 mL). Thionyl chloride (113 g, 950 mmol) was added and the solution was heated at 80°C for 18 h. After concentration in vacuo and co-evaporation with toluene the resulting material was dissolved in dry MeCN (150 mL). This solution was added to an ice-cold solution of methanol (158 g, 4931 mmol) and triethylamine (48.0 g, 474 mmol). After stirring for 20 minutes the mixture was concentrated in vacuo. EtOAc (250 mL) was added and the solution was washed with saturated aqueous NaHC03 (100 mL) and brine (100 mL). The organic layer was separated, coated on hydromatrix and purified over silica gel (80 g, 5- 35% EtOAc in heptane) to obtain the title compound (3.4 g, 74% yield, >95% purity) as an orange solid. LCMS (base): [M+H]+ 202, RT 1.84 minutes.
INTERMEDIATE 107
Lithium 2-r(2-chloropyridin-4-yl)oxy1 acetate
Intermediate 106 (3.40 g, 16.86 mmol) was dissolved in THF (40 mL), water (20 mL) and methanol (20 mL). Lithium hydroxide monohydrate (0.849 g, 20.24 mmol) was added and the solution was stirred at r.t. for 36 h. The mixture was concentrated in vacuo and co-evaporated with toluene to obtain the title compound (3.3 g) as a yellow solid. LCMS (base): [M+H]+ 188, RT 0.3 minutes. INTERMEDIATE 108
4 (([(2-Chloropyridin-4-yl)oxy]methyl|carbonyl)am
benzylaminolbenzonitrile
Intermediate 40 (4.60 g, 15.9 mmol) was dissolved in dry DMF (100 mL) and Intermediate 107 (3.30 g, 17.05 mmol) was added. After addition of HATU (13.30 g, 35.0 mmol) the mixture was stirred at r.t. under a nitrogen atmosphere for 18 h. The mixture was concentrated, dissolved in EtOAc (250 mL) and washed with water (100 mL). The layers were separated and the aqueous layer was extracted with EtOAc (100 mL). The organic layers were combined, washed with water (100 mL) and brine (100 mL), dried over sodium sulfate and coated onto hydromatrix. The coated material was purified over silica gel (80 g, 10-60% EtOAc in heptane) to afford the title compound (6.2 g, 85% yield, >95% purity) as a brownish foam. LCMS (base): [M+H]+ 459, RT 2.27 minutes.
INTERMEDIATE 109
2- { r(2-Chloropyridin-4-yl)oxy1methyl| - 1 2-(difluoromethoxy)benzyl1 - \H- benzo Γ 1imidazole-6-carbonitrile
Intermediate 108 (0.7 g, 1.21 mmol) was dissolved in acetic acid (20 mL) and stirred under a nitrogen atmosphere at 80°C for 2 h. The mixture was concentrated and the residue was dissolved in EtOAc (100 mL). The solution was washed with saturated aqueous NaHC03 solution (50 mL), diluted aqueous NaHC03 solution (1 : 1 saturated aqueous NaHC03 solution/water, 50 mL) and brine (100 mL). The organic phase was separated, dried over sodium sulfate and evaporated to dryness. The crude material was purified over silica gel (12 g, 10-70%) EtOAc in heptane) to afford the title compound (100 mg, 19% yield, >95% purity) as a beige solid. LCMS (base): [M-H]~ 439, RT 2.24 minutes. INTERMEDIATE 110
6-(6-Chloropyridin-3-yl)- 1 2-(difluoromethoxy)benzyl]-2-methyl- lH-benzo[ imidazole Intermediate 47 (400 mg, 1.089 mmol) and (6-chloropyridin-3-yl)boronic acid (171 mg, 1.089 mmol) were dissolved DME (15 mL). A solution of cesium carbonate (1065 mg, 3.27 mmol) in water (5 mL) was added, and the mixture was degassed with argon before [l, -bis(diphenylphosphino)ferrocene]palladium(II) dichloride (89 mg, 0.109 mmol) was added. The reaction mixture was heated at 100°C for 0.5 h under microwave irradiation. After cooling, the reaction mixture was diluted with water (20 mL) and extracted with EtOAc (2 x 50 mL). The combined organic layers were dried over sodium sulfate, evaporated in vacuo and purified over silica gel (100 g, 0-10% MeOH in DCM) to obtain the title compound as an off-white solid. 5H (400 MHz, DMSO-d6) 8.56 (d, J2.5 Hz, IH), 7.82 (d, J 8.3 Hz, IH), 7.81 (d, J 8.3 Hz, IH), 7.43 (dd, J 1.6, 8.3 Hz), 7.36 (d, J 8.4 Hz), 7.37-7.29 (m, 2H), 7.19 (d, J 7.9 Hz, IH), 7.09 (t, J 7.7 Hz), 6.84-6.48 (t, J73.2 Hz, IH), 6.67 (d, J -6.3 Hz, IH), 5.44 (s, 2H), 2.61 (s, 3H). LCMS (acid): [M+H]+ 400, RT 1.85 minutes.
INTERMEDIATE 111 5-(2,5-Difluoro-4-nitrophenyl)-2-methoxypyridine
A suspension of l-bromo-2,5-difluoro-4-nitrobenzene (25 g, 105 mmol), (6- methoxypyridin-3-yl)boronic acid (19.28 g, 126 mmol) and sodium carbonate (33.4 g, 315 mmol) in DME (800 mL) and water (200 mL) was degassed with argon.
Bis(triphenylphosphine)palladium(II) chloride (3.69 g, 5.25 mmol) was added and the mixture was heated at 80°C for 1 h. After cooling, EtOAc and water were added, the layers were separated and the aqueous phase was extracted twice with EtOAc. The combined organic layers were washed with brine, dried over sodium sulfate and evaporated in vacuo, to obtain the title compound (29.3 g, 92% yield, 88% purity).
LCMS (acid): [M+H]+ 267, RT 2.19 minutes. INTERMEDIATE 112
(6 -4-Fluoro-N-[l-(4-fluorophenyl)ethyll-5-(6-methoxypyridin-3-yl)-2-nitroam
Intermediate 111 (5 g, 18.78 mmol) and (5)-l-(4-fluorophenyl)ethylamine (4.44 g, 31.9 mmol, 4.3 mL) were dissolved in dry THF (80 mL). Potassium carbonate (3.12 g, 22.54 mmol) was added and the reaction mixture was heated under reflux for 8 days. The reaction mixture was diluted with water (100 mL) and extracted with EtOAc (3 x 100 mL). The combined organic layers were dried over sodium sulfate and evaporated in vacuo, to obtain the title compound (7.8 g, 89% yield, 82% purity) as an orange solid. LCMS (base): [M+H]+ 386, RT 2.59 minutes.
INTERMEDIATE 113
(6 -4-Fluoro-N -Γ 1 -(4-fluorophenyl)ethyl1-5-(6-methoxypyridin-3-yl)benzene- 1 ,2- diamine
Intermediate 112 (5 g, 12.97 mmol) was suspended in methanol (50 mL).
Ammonium chloride (3.47 g, 64.9 mmol) in water (150 mL) was added, followed by the addition of iron powder (3.62 g, 64.9 mmol). The reaction mixture was vigorously stirred at 80°C for 16 h, then filtered over kieselguhr. The filtrate was concentrated in vacuo. The residue was dissolved in water (20 mL) and washed with EtOAc (3 x 50 mL). The organic layers were combined, dried over sodium sulfate and evaporated in vacuo. The crude material was purified over silica gel (120 g, 0-50% EtOAc in heptane) to afford the title compound (3.15 g, 68% yield, 98% purity) as a brown oil. LCMS (base): [M+H]+ 356, RT 2.38 minutes.
INTERMEDIATE 114
2-(6-Chloropyridin-3-yl)-N- {5-fluoro-2-r 1 -(4-fluorophenyl)ethylamino1-4-(6-methoxy- pyridin-3-yl)phenyl| acetamide
Intermediate 113 (5 g, 14.07 mmol), 6-chloro-3-pyridineacetic acid (4.83 g, 28.1 mmol) and DIPEA (5.46 g, 42.2 mmol, 7.23 mL) were dissolved in DME (100 mL). Bis(2-oxo-3-oxazolidinyl)phosphinic chloride (3.58 g, 14.07 mmol) was added and the reaction mixture was stirred at 60°C for 2 h. The mixture was cooled, diluted with EtOAc (50 mL) and washed with saturated aqueous NaHC03 solution (50 mL). The layers were separated and the aqueous phase was washed with EtOAc (2 x 100 mL). The combined organic layers were evaporated in vacuo to afford the title compound (8.7 g) as a brown oil. LCMS (base): [M+H]+ 509, RT 2.40 minutes.
INTERMEDIATE 115
(6 -2-[(6-Chloropyridin-3-yl)methyll-5-fluoro-l-[l-(4-fluorophenyl)ethyll-6-(6- methoxypyridin-3-yl)-lH-benzor 1imidazole
Intermediate 114 (8.7 g, 17.09 mmol) was dissolved in acetic acid (200 mL) and heated at 110°C for 3 h. The acetic acid was evaporated and the crude material was coated onto hydromatrix, then purified over silica gel (40 g, 0-100% EtOAc in heptane), to afford the title compound (4.36 g, 52% yield, 98%> purity) as a white solid. δΗ (400 MHz, DMSO-d6) 8.31 (d, J2.3 Hz, IH), 8.11 (d, J 1.7 Hz, IH), 7.66-7.63 (dt, J2.2, 8.6 Hz, IH), 7.60-7.57 (dd, J2.5, 5.8 Hz, IH), 7.53 (d, J 10.7 Hz, IH), 7.27 (d, J 8.0 Hz, IH), 7.08-6.96 (m, 4H), 6.89 (d, J 6.6 Hz, IH), 6.78 (d, J 8.6 Hz, IH), 5.68 (d, J 7.0 Hz, IH), 4.35-4.25 (dd, J 16.2, 5.2 Hz, 2H), 3.96 (s, 3H), 1.81 (d, J7.1 Hz, 3H). LCMS (base): [M+H]+ 491, RT 2.40 minutes.
INTERMEDIATE 116 l-( [2-(Difluoromethoxy)phenyllmethyl| -6-(6-methoxypyridin-3 -yl)benzimidazole-2- carbaldehyde
The title compound can be synthesized from Example 238 by treatment with Dess- Martin periodinane in dichloromethane.
INTERMEDIATE 117
(2-r4-(Methylsulfonyl)piperazin-l-yl1pyrimidin-5-yl|boronic acid
The title compound was synthesized from (2-chloropyrimidin-5-yl)boronic acid and 1 -(methylsulfonyl)piperazine by the method described for Intermediate 89. INTERMEDIATE 118
6-Bromo- 1 -[(2,5-dimethylphenyl)methyllbenzimidazole
The title compound can be synthesized from Intermediate 17 and formic acid accordance with Method J.
INTERMEDIATE 119
( 1 -i(lR)- 1 -PhenylethvHbenzimidazol-2-yl|methanol
The title compound was synthesised in accordance with the procedure described for Intermediate 10 starting from (i?)-l-phenylethylamine.
INTERMEDIATE 120
4-[(6-Bromo-lH-benzimidazol-2-yl)methoxy]benzamide
Prepared from 4-bromo-l,2-phenylenediamine and 2-(4-carbamoylphenoxy)acetic acid in accordance with Method J to give the title compound (2.80 g, 72%) as a pale brown solid. δΗ (dg-DMSO) 7.87-7.76 (m, 4H), 7.53 (d, IH, J 8.5 Hz), 7.34 (dd, IH, J 8.5, 1.7 Hz), 7.22-7.13 (m, 3H), 5.39 (s, 2H).
INTERMEDIATE 121 fert-Butyl 4-(l-{r2-(difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-5-yl)- piperidine- 1 -carboxylate
The title compound was prepared from Intermediate 47 and tert-bv y\ 4-(4,4,5,5- tetramethyl- 1 ,3 ,2-dioxaborolan-2-yl)-3 ,6-dihydro-2H-pyridine- 1 -carboxylate by Method L, followed by catalytic hydrogenation with 5 mol % palladium on carbon in ethanol.
INTERMEDIATE 122 l-( [2-(Difluoromethoxy)phenyllmethyl| -2-methyl-6-(piperidin-4-yl)benzimidazole
Can be prepared from Intermediate 121 by dissolving the compound in a mixture of dichloromethane and trifluoroacetic acid (5:1 v:v) and stirring at ambient temperature for 16 h. The volatiles can be removed in vacuo to yield the title compound as the trifluoroacetate salt.
INTERMEDIATE 123
Methyl (2tS,3tS,4tS,5i?,6^-3,4,5-triacetoxy-6-ir5-(l-ir2-(difluoromethoxy phenyll- methyl|-2-methylbenzimidazol-6-yl)pyridin-2-ylloxy|tetrahydropyran-2-carboxylate Example 405 (100 mg, 0.26 mmol) and silver carbonate (290 mg, 1.04 mmol) were suspended in toluene (10 mL) and stirred at room temperature for 15 minutes, after which time acetobromo-a-D-glucuronic acid methyl ester (110 mg, 0.28 mmol) in toluene (5 mL) was added portionwise. The reaction mixture was heated under reflux for 4 h. The reaction mixture was then cooled to room temperature. The suspension was vacuum filtered to remove solids, and the filter cake was washed with EtOAc (3 x 25 mL). The filtrate was concentrated in vacuo, then the residue was purified by preparative HPLC and freeze-dried from acetonitrile/water, to give the title compound (49 mg, 26%) as a white solid. 5H (DMSO-d6) 8.48-8.51 (m, 1H), 8.07 (dd, 1H, J 8.6, 2.5 Hz), 7.77 (d, 1H, J 1.3 Hz), 7.64 (d, 1H, J 8.4 Hz), 7.48 (dd, 1H, J 8.4, 1.6 Hz), 7.33-7.40 (m, 1H), 7.35 (t, 1H, J 73.8 Hz), 7.23-7.29 (m, 1H), 7.14 (td, 1H, J7.6, 1.1 Hz), 6.96 (d, 1H, J 8.6 Hz), 6.75 (dd, 1H, J 7.7, 1.3 Hz), 6.47 (d, 1H, J 8.2 Hz), 5.61 (t, 1H, J9.5 Hz), 5.54 (s, 2H), 5.14 (dd, 1H, J 9.5, 8.1 Hz), 5.06 (t, 1H, J 9.7 Hz), 4.71 (d, 1H, J9.8 Hz), 3.61 (s, 3H), 2.48-2.52 (m, 3H), 2.01 (s, 3H), 1.99 (s, 3H), 1.96 (s, 3H). LCMS (ES+) 698 (M+H)+, RT 2.33 minutes.
INTERMEDIATE 124
[(Amino)(3 -oxopiperazin- 1 -yDmethylene] ammonium chloride
Piperazin-2-one (200 mg, 2.00 mmol) and lH-pyrazole-l-carboxamidine hydrochloride (293 mg, 2.00 mmol) were dissolved in ethanol (5 mL) and heated at 80°C for 4.5 h. The reaction mixture was cooled to 40°C and filtered to give the title compound (213 mg, 60%) as a pale yellow solid. δΗ (DMSO-d6) 8.31 (s, 1H), 7.56 (s, 4H), 3.94 (s, 2H), 3.53-3.59 (m, 2H), 3.25-3.32 (m, 2H). INTERMEDIATE 125 fert-Butyl-{(i?,E)-[2-(difluoromethoxy^
(i?)-2-Methylpropane-2-sulfinamide (40.6 g, 335 mmol) and 2-(difluoromethoxy)- benzaldehyde (160 g, 279 mmol) were dissolved in tetrahydrofuran (300 mL) under nitrogen. Titanium ethoxide (126 mL, 613 mmol) was added and the mixture was stirred overnight. The mixture was quenched with water and filtered over kieselguhr. The filtrate was diluted with EtOAc and water and the layers were separated. The water layer was extracted thrice with EtOAc. The organic layers were combined and washed with water and brine, dried with Na2S04, concentrated in vacuo and co-evaporated with dichloromethane, to give the title compound (74.7 g) as a yellow oil. LCMS (pH 3): (M+H)+ m/z 276, RT 2.09 minutes.
INTERMEDIATE 126
(R)-N- R or S)- 1 -[2-(Difluoromethoxy)phenyllethyl| -2-methylpropane-2-sulfinamide (Isomer A)
To a solution of methylmagnesium bromide in Et20 (127 mL, 381 mmol) in anhydrous tetrahydrofuran (300 mL), under argon at -30°C, was added Intermediate 125 (35 g, 127 mmol) in anhydrous tetrahydrofuran (100 mL) dropwise (temperature maintained below -20°C). The mixture was stirred at -30°C for 30 minutes. The mixture was poured onto saturated aqueous NH4C1 solution. The mixture was diluted with EtOAc and water, and the layers were separated. The aqueous layer was extracted 3 times with EtOAc. The organic layers were combined and washed with water and brine, dried with Na2S04 and concentrated, to give a yellow oil (40.13 g). The batch was purified by sequential column chromatography (50-80% EtOAc in heptane, followed by 30-70% EtOAc in heptane) to give the major diastereomer (Isomer A) as a yellow oil (29 g).
INTERMEDIATE 127
(R or 6 -l-[2-(Difluoromethoxy)phenyllethanamine hydrochloride (Isomer A)
4N HC1 in methanol was prepared by dropwise addition of SOCl2 (17.60 mL, 241 mmol) into methanol (118 mL) at 0°C. The solution was added to Intermediate 126 (17.5 g, 60.3 mmol) in methanol (100 mL) and the mixture was stirred for 1 h. The mixture was concentrated, then co-evaporated 3 times with ethanol and DCM, to give a yellow oil The batch was crystallized using diisopropyl ether and the batch was triturated overnight. The mixture was filtered off and rinsed with diisopropyl ether. The residue was air-dried and the title compound (11.8 g) was isolated as a white solid. LCMS: m/z 188 (M+H)+.
INTERMEDIATE 128 tert-Butyl-{(6',E)-r2-(difluoromethoxy)phenyl1methyleneamino|-oxido-sulfonium
The title compound was prepared from (S)-2-methylpropane-2-sulfmamide in accordance with the method described for Intermediate 125. LCMS (pH 3) m/z 276 (M+H)+, RT 2.09 minutes.
INTERMEDIATE 129
(S)-N- R or S)- 1 -[2-(Difluoromethoxy)phenyllethyl| -2-methylpropane-2-sulfinamide (Isomer B)
Prepared from Intermediate 128 in accordance with the method described for Intermediate 126, to give the title compound as a yellow oil.
INTERMEDIATE 130
(R or 6 -l-r2-(Difluoromethoxy)phenyl1ethanamine hydrochloride (Isomer B)
Prepared from Intermediate 129 in accordance with the method described for Intermediate 127, to give the title compound (11 g) as a white solid. LCMS: m/z 188 (M+H)+.
INTERMEDIATE 131 5-Bromo-N -{l-[2-(difluoromethoxy)phenyllethyl|-benzene-l,2-diamine (Isomer B)
Intermediate 130 was reacted with 4-bromo-2-fluoro-l -nitrobenzene according to the first two steps of Method K to give the title compound. LCMS (pH 10): 357.0 (M+H)+, RT 1.17 minutes. INTERMEDIATE 132
5- Bromo-N7- { 1 -[2-(difluoromethoxy)phenyllethyl| -benzene- 1 ,2-diamine (Isomer A) Intermediate 127 was reacted with 4-bromo-2-fluoro- 1 -nitrobenzene in accordance with the first two steps of Method K to give the title compound. LCMS (pH 10): 357.0 (M+H)+, RT 1.17 minutes.
INTERMEDIATE 133
6- Bromo-5-chloro-l-{[2-(difluoromethoxy)phenyllmethyl|-2-methylbenzimidazole
The title compound was prepared from 4-bromo-5-chloro-2-fluoronitrobenzene and 2-(difluoromethoxy)benzylamine in accordance with the procedure described for Intermediate 47. LCMS (pH 10): RT 1.57 minutes, m/z 401.0, 402.0 and 403.0.
INTERMEDIATE 134
5-Chloro-6-(2-chloropyrimidin-5-yl)-l-([2-(difluoromethoxy)phenyllmethyl|-2-methyl- benzimidazole
The title compound was prepared from Intermediate 133 and (2-chloropyrimidin-
5-yl)boronic acid in accordance with Method L. LCMS (pH 10): RT 1.51 minutes, poor ionisation.
INTERMEDIATE 135
4-(5-Bromopyridin-2-yl)- 1 -methylpiperidin-4-ol
2,5-Dibromopyridine (2 g, 8.44 mmol) was stirred under nitrogen in toluene (40 mL) at -78°C and 2.5M butyllithium in hexane (3.38 mL) was added dropwise over 10 minutes. The mixture was stirred for 45 minutes at -78°C, then l-methylpiperidin-4-one (1.46 g, 0.013 mol) was added dropwise over 10 minutes. The reaction mixture was stirred for 45 minutes at -78°C then allowed to warm to room temperature. Aqueous ammonium chloride solution (5%, 75 mL) was added to the reaction mixture, and the product was extracted into ethyl acetate (2 x 75 mL). The combined organic extracts were washed with water (75 mL) and brine (75 mL), dried over magnesium sulfate and concentrated under reduced pressure. The crude product was purified by using a Biotage isolera 4, SNAP HP 50g column, eluting with 0-10% 7N methanolic ammonia in DCM, to yield the title compound (1.24 g, 54%) as a pale yellow solid. 5H (250 MHz, CDC13) 8.57 (d, J2.2 Hz, IH), 7.83 (dd, J 8.5, 2.3 Hz, IH), 7.30 (d, J 8.5 Hz, IH), 4.82 (s, IH), 2.91-2.73 (m, 2H), 2.54 (td, J 12.2, 2.5 Hz, 2H), 2.39 (s, 3H), 2.11 (td, J 13.0, 4.6 Hz, 2H), 1.64 (dd, J 13.6, 2.3 Hz, 2H).
INTERMEDIATE 136
5-Bromo-2- { 1 -methyl-4-[(trimethylsilyl)oxylpiperidin-4-yl|pyridine
Intermediate 135 (0.5 g, 1.84 mmol) and imidazole (251 mg, 3.69 mmol) were stirred in DCM (10 mL) and the yellow solution was cooled in an ice brine bath.
Trimethylsilyl chloride (0.26 mL, 2.03 mmol) was added portionwise, the ice bath was removed and the reaction mixture was stirred at 20°C for 35 minutes. Further
trimethylsilyl chloride (0.05 mL, 0.37 mmol) was added to the reaction mixture, and stirring was continued at 20°C for 1 h. The reaction mixture was washed with water (2 x 10 mL), dried over magnesium sulfate, filtered and concentrated under reduced pressure, to afford the title compound (644 mg, 101.7%) as a white solid. δΗ (250 MHz, CDC13) 8.59 (d, J2.3 Hz, IH), 7.79 (dd, J 8.5, 2.4 Hz, IH), 7.40 (d, J 8.5 Hz, IH), 2.67 (d, J 11.1 Hz, 2H), 2.48 (td, J l l . l, 2.4 Hz, 2H), 2.33 (s, 3H), 2.17 (td, J 12.5, 11.3, 4.2 Hz, 2H), 1.98 (d, J 12.5 Hz, 2H), -0.08 (s, 9H).
INTERMEDIATE 137
2- ( 1 -Methyl-4-[(trimethylsilyl)oxylpiperidin-4-yl| -5-(4,4,5,5-tetramethyl- 1 ,3,2- dioxaborolan-2-yl)pyridine
Intermediate 136 (594 mg, 1.73 mmol), diboron pinacol ester (527 mg, 2.1 mmol) and potassium acetate (509 mg, 5.2 mmol) were stirred in 1,4-dioxane (5 mL) and degassed with a stream of nitrogen for 10 minutes. Pd(dppf)Cl2 complex with DCM (71 mg, 0.09 mmol) was added and the mixture was heated in a sealed tube at 80°C for 30 minutes. The reaction mixture was cooled and filtered through Celite, washing with ethyl acetate (10 mL). The residue was concentrated under vacuum to give a black oil, azeotroping with 2: 1 heptane/tert-butyl methyl ether. The residue was then sonicated in 2: 1 heptane/ tert-butyl methyl ether (5 mL) for 5 minutes. The resulting dark grey precipitate was filtered and washed with heptane (5 mL) to afford the title compound (170 mg, 16.4%) as a grey solid. δΗ (250 MHz, CDC13) 8.87 (dd, J 1.7, 0.9 Hz, 1H), 8.02 (dd, J 7.9, 1.8 Hz, 1H), 7.46 (dd, J 7.9, 0.9 Hz, 1H), 2.67 (d, J 10.8 Hz, 2H), 2.58-2.39 (m, 2H), 2.29 (m, 5H), 1.99 (d, J 12.6 Hz, 2H), 1.34 (s, 12H), -0.10 (s, 9H).
INTERMEDIATE 138 ((4-r5-(l- (r2-(Difluoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol-6-yl)-2- pyridyll-l-methylpiperidin-4-yl|oxy)(trimethyl)silane
Intermediate 137 (50.68 mg, 0.13 mmol), Intermediate 50 (50 mg, 0.13 mmol) and 2M sodium carbonate in water (0.2 mL) were stirred in 1,4-dioxane (1 mL) and degassed under a stream of nitrogen for 10 minutes. Pd(dppf)Cl2 complex with DCM (6 mg, 6.49 μιηοΐ) was added and reaction mixture was heated at 80°C for 1.5 h. The reaction mixture was filtered through Celite, concentrated under reduced pressure and purified by preparative HPLC (method D), to afford the title compound (48 mg, 62%) as a yellow oil. δΗ (500 MHz, CDC13) 8.64 (s, 1H), 7.85 (dt, J 8.3, 2.0 Hz, 1H), 7.57-7.48 (m, 2H), 7.35-7.29 (m, 1H), 7.18 (d, J6.4 Hz, 2H), 7.09 (t, J 7.6 Hz, 1H), 6.81-6.47 (m, 2H), 5.40 (s, 2H), 2.68 (d, J23.3 Hz, 2H), 2.58 (s, 3H), 2.48 (t, J 10.6 Hz, 2H), 2.32 (s, 3H), 2.27-2.16 (m, 2H), 2.04 (d, J 12.6 Hz, 2H), -0.07 (s, 9H). Method D 7min uPLC-MS: MH+ mlz 569, RT 2.20 minutes (92%).
INTERMEDIATE 139
4-(5 -Bromopyrimidin-2-yl)- 1 -methylpiperidin-4-ol
5-Bromo-2-iodopyrimidine (2 g, 7.02 mmol) was dissolved in dry toluene (30 mL) and cooled to -78°C under nitrogen. 2.5M n-butyllithium in hexanes (2.95 mL) was added dropwise and the reaction mixture was stirred for 30 minutes before dropwise addition of 1 -methylpiperidin-4-one (0.9 mL, 0.01 mol). The reaction mixture was stirred at -78°C for 1 h. The reaction mixture was allowed to warm to room temperature and diluted with aqueous ammonium chloride solution (5%>, 50 mL), then extracted with ethyl acetate (3 x 50 mL). The combined organic extracts were washed with brine (50 mL) and dried over magnesium sulphate, then the solvent was removed under reduced pressure. The crude residue (1.55 g) was sonicated in ethyl acetate (10 mL) and DCM (1 mL), then heptane was added. The resulting solid was filtered to afford the title compound (580 mg (29.4%) as a brown solid. LCMS Method E: MH+ mlz 272/274, RT 1.20 minutes (100%).
INTERMEDIATE 140
5-Bromo-2- { 1 -methyl-4-r(trimethylsilyl)oxy1piperidin-4-yl|pyrimidine
Intermediate 139 (97%, 570 mg, 2.03 mmol) and imidazole (280 mg, 4.06 mmol) were stirred in 4: 1 DCM/DMF (12.5 mL) and the solution was cooled in an ice/brine bath. Trimethylsilyl chloride (0.28 mL, 2.23 mmol) was added dropwise. The reaction mixture was allowed to warm to room temperature and stirred for 3.5 h. The reaction mixture was washed with water (2 x10 mL) and brine (5 mL), dried over magnesium sulfate, filtered and concentrated. The resulting sticky residue was sonicated in ethyl acetate, adding heptane. The resulting solid was filtered off and dried in vacuo at 40°C overnight to afford the title compound (316 mg, 45.2%) as a brown solid. δΗ (250 MHz, CDC13) 8.80 (s, 2H), 3.47 (d, J 13.4 Hz, 2H), 3.32-3.10 (m, 2H), 2.81 (d, J4.9 Hz, 3H), 2.77-2.63 (m, 2H), 2.45 (d, J 13.7 Hz, 2H), -0.09 (d, J 1.7 Hz, 9H).
INTERMEDIATE 141
2- ( 1 -Methyl-4-r(trimethylsilyl)oxy1piperidin-4-yl| -5-(4,4,5,5-tetramethyl- 1 ,3,2- dioxaborolan-2-vDpyrimidine
Intermediate 140 (316 mg, 0.92 mmol), diboron pinacol ester (280 mg, 1.1 mmol) and potassium acetate (270 mg, 2.75 mmol) were stirred in 1,4-dioxane (3 mL) and degassed for 5 minutes with nitrogen. Pd(dppf)Cl2 complex with DCM (37 mg, 0.05 mmol) was added. The tube was sealed under nitrogen and heated at 80°C for 5.5 h. The reaction mixture was filtered through Celite, washing with ethyl acetate (10 mL), and concentrated to give a black oil. The residue was then sonicated in 2: 1 heptane/tert-butyl methyl ether (5 mL) for 5 minutes. The resulting dark grey precipitate was filtered and the filtrate was concentrated to give crude product. This process was repeated twice to afford the title compound (232 mg, 26%) as a grey solid. δΗ (500 MHz, CDC13) 9.00 (s, 2H), 2.60 (s, 4H), 2.35 (m, 5H), 2.13 (d, J 12.2 Hz, 2H), 1.36 (s, 12H), -0.07 (s, 9H).
INTERMEDIATE 142 l- (r2-(Difluoromethoxy)phenyl1mrt^
dioxaborolan-2-vDbenzimidazole
To a stirring solution of Intermediate 50 (86%, 760 mg, 1.7 mmol) in 1,4-dioxane (35 mL) were added bis(pinacolato)diboron (1.21 g, 4.75 mmol) and potassium acetate (500 mg, 5.01 mmol). The stirring mixture was degassed with nitrogen for 10 minutes, then Pd(dppf)Cl2 complex with DCM (70 mg, 0.086 mmol) was added and the mixture was stirred at 110°C for 5 h. The reaction mixture was allowed to cool to room
temperature, then diluted with dichloromethane (50 mL) and filtered through celite, washing through with further dichloromethane (30 mL). The filtrate was concentrated under vacuum to give a dark oily solid (2.47 g), which was suspended in a 1 :2 mixture of diethyl ether/heptane (15 mL) and sonicated for 5 minutes. The resulting fine suspension was collected by filtration and dried by vacuum oven to afford the title compound (573 mg, 70%) as a dark brown solid. δΗ (500 MHz, CDC13) 7.58 (d, J 4.5 Hz, 1H), 7.39 (d, J 9.8 Hz, 1H), 7.34-7.29 (m, 1H), 7.19 (d, J 8.0 Hz, 1H), 7.07 (t, J7.5 Hz, 1H), 6.67 (t, J 73.2 Hz, 1H), 6.55 (d, J 7.6 Hz, 1H), 5.39 (s, 2H), 2.52 (s, 3H), 1.35 (s, 12H).
INTERMEDIATE 143
3 -(5 -Bromopyrimidin-2-yl)oxetan-3 -ol
5-Bromo-2-iodopyrimidine (2 g, 7.02 mmol) was dissolved in dry toluene (30 mL) and cooled to -78°C under N2. n-Butyllithium in hexanes (2.5M, 2.95 mL) was added dropwise and the reaction mixture was stirred for 30 minutes, prior to dropwise addition of oxetan-3-one (0.452 mL, 7.72 mmol). The reaction mixture was stirred at -78°C for 30 minutes, then allowed to warm to room temperature for 1 h. The reaction mixture was diluted with water (100 mL) and extracted with ethyl acetate (3 x 100 mL). The combined organic extracts were successively washed with water and brine, then dried over magnesium sulphate, The solvent was removed under reduced pressure to afford a brown oily solid. The crude material was absorbed onto 25g KP-Sil biotage column with minimal DCM, and the product was eluted using a Biotage Isolera 4 with 10-100% ethyl acetate in heptanes, to afford the title compound (687 mg, 42%) as a crystalline yellow solid. δΗ (500 MHz, DMSO-d6) 9.07 (s, 2H), 6.43 (s, 1H), 4.94 (d, J 6.5 Hz, 2H), 4.67 (d, J 6.5 Hz, 2H). INTERMEDIATE 144
1 -(5 -Bromopyrimidin-2-yl)cyclobutan- 1 -ol
5-Bromo-2-iodopyrimidine (1 g, 3.51 mmol) was suspended in dry toluene (15 mL) and cooled to -78°C under nitrogen. m-Xylene (6 mL) was added until the reaction mixture was in solution. n-Butyllithium in hexanes (2.5M, 1.5 mL) was added dropwise and the reaction mixture was stirred for 20 minutes, prior to dropwise addition of cyclobutanone (300 mg, 4.28 mmol). The reaction mixture was stirred at -78°C for 45 minutes and then allowed to warm to room temperature. The reaction mixture was diluted with water (50 mL) and extracted with ethyl acetate (3 x 40 mL). The combined organic extracts were dried over magnesium sulfate and the solvent was removed in vacuo. The resulting brown oil was dissolved in a minimum of DCM and loaded onto a 25g silica cartridge. This was eluted on a Biotage Isolera 4, with a gradient of 0-100% ethyl acetate in heptanes, to afford the title compound (396 mg, 49%>) as a bright yellow solid. δΗ (500 MHz, CD3OD) 8.90 (s, 2H), 2.71-2.63 (m, 2H), 2.37 (ddd, J 12.7, 9.8, 8.2 Hz, 2H), 2.04-1.86 (m, 2H).
INTERMEDIATE 145
2-(5-Bromopyridin-2-yl)propan-2-ol
2,5-Dibromopyridine (5 g, 0.021 mol) was dissolved in toluene (100 mL). The mixture was cooled to -78°C. A 2.5 M solution of n-butyllithium in hexane (8.44 mL, 0.021 mol) was added dropwise. The mixture was stirred 30 minutes, followed by the addition of anhydrous acetone (10 mL). The mixture was stirred 45 minutes and then allowed to warm to room temperature for 1 h. The mixture was washed with aqueous ammonium chloride solution (5%, 100 mL) and water (100 mL), then brine (100 mL).
The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography on silica gel (eluting with 0 to 10%> ethyl acetate in heptanes) to afford the title compound (2.21 g, 48%) as a yellow oil. δΗ (500 MHz, CDCl3) 8.57 (d, J2.1 Hz, IH), 7.81 (dd, J 8.4, 2.3 Hz, IH), 7.31 (d, J 8.4 Hz, IH), 4.41 (s, IH), 1.53 (s, 6H).
INTERMEDIATE 146
5-Bromo-2-{2-r(trimethylsilyl)oxy1propan-2-yl|pyridine
Intermediate 145 (1 g, 4.63 mmol) and imidazole (630 mg, 9.26 mmol) were dissolved in DCM (20 mL) and the solution was cooled in an ice bath prior to addition of trimethylsilyl chloride (553 mg, 5.09 mmol). The ice bath was removed and the reaction mixture was stirred at room temperature for 0.75 h. Additional trimethylsilyl chloride (1.65 eq) was added and the reaction mixture was stirred for 45 minutes. The reaction mixture was washed with water (2 x 20 mL) and dried over magnesium sulfate. The solvent was removed under reduced pressure to afford the title compound (1.142 g, 82%) as a colourless oil. δΗ (500 MHz, CDC13) 8.54 (d, J2.3 Hz, IH), 7.76 (dd, J 8.5, 2.4 Hz, IH), 7.56 (d, J 8.5 Hz, IH), 1.58 (s, 6H), 0.15 (s, 9H).
INTERMEDIATE 147
5-(4,4,5,5-Tetramethyl-l,3,2-dioxaborolan-2-yl)-2-{2-r(trimethylsilyl)oxy1propan-2- yl I pyridine
In a pressure tube, a stirring solution of Intermediate 146 (200 mg, 0.69 mmol) in 1,4-dioxane (8 mL) was treated with bis(pinacolato)diboron (211 mg, 0.83 mmol) and potassium acetate (205 mg, 2.09 mmol). The stirring mixture was degassed with nitrogen for 10 minutes, then Pd(dppf)Cl2 complex with DCM (29 mg, 0.04 mmol) was added. The pressure tube was sealed and the contents were stirred at 80°C for 1 h, then at 100°C for 1 h. The reaction mixture was allowed to cool and then filtered through celite, washing with ethyl acetate (30 mL). The filtrate was concentrated under vacuum to give a dark brown oil, which was triturated in 2: 1 ethenheptane (10 mL). The suspension was filtered and the filtrate concentrated in vacuo to give a brown oil which was loaded onto a lOg HP-silica cartridge and eluted on a Biotage Isolera 4, from a 0-100% ethyl acetate in heptanes gradient, to afford the title compound (185 mg, 80%>) as a light brown solid. 5H (500 MHz, CDC13) 8.85 (s, IH), 8.03 (d, J7.8 Hz, IH), 7.64 (d, J 7.9 Hz, IH), 1.61 (s, 6H), 1.34 (s, 12H), 0.14 (s, 9H). INTERMEDIATE 148
( 1 - [5 -( 1 - ( [2-(Difluoromethoxy)phenyllmethyl| -5 -fluoro-2-methylbenzimidazol-6-yl)- pyridin-2- yll - 1 -methylethoxyl (trimethyl)silane
Intermediate 147 (185 mg, 0.55 mmol) and Intermediate 50 (175 mg, 0.45 mmol) were dissolved in anhydrous 1 ,4-dioxane (8 mL) and 2M aqueous potassium carbonate solution (0.7 mL) was added. The mixture was degassed under nitrogen for 5 minutes. Pd(dppf)Cl2 complex with DCM (20 mg, 0.024 mmol) was added. The mixture was stirred at 100°C under nitrogen for 7 h. The reaction mixture was allowed to cool, dried over sodium sulfate and concentrated under vacuum to give crude product as a dark oil (318 mg). This material was loaded onto a lOg HP-silica cartridge and eluted on a Biotage Isolera 4, from a 0-70% ethyl acetate in heptane gradient, to afford the title compound (166 mg, 71%) as a colourless oil. δΗ (500 MHz, CDC13) 8.61 (s, 1H), 7.85 (d, J 8.0 Hz, 1H), 7.72 (d, J 8.2 Hz, 1H), 7.53 (d, J 10.8 Hz, 1H), 7.37-7.29 (m, 1H), 7.21- 7.14 (m, 2H), 7.13-7.06 (m, 1H), 6.80-6.45 (m, 2H), 5.43-5.37 (m, 2H), 2.61 (s, 3H), 1.65 (s, 6H), 0.17 (s, 9H).
INTERMEDIATE 149 tert-Butyl 3 -(5 -bromopyrimidin-2-yl)- 3 -hydroxyazetidine- 1 -carboxylate
A solution of 5-bromo-2-iodopyrimidine (2 g, 7.02 mmol) in anhydrous toluene (25 mL) was cooled to -78°C with stirring under nitrogen, forming a thick paste. A solution of n-butyllithium in hexanes (2.5M, 2.83 mL) was then added dropwise over 10 minutes. The reaction mixture was stirred at -78°C for 30 minutes, then solid tert-butyl 3- oxoazetidine-1 -carboxylate (1.33 g, 7.74 mmol) was added portionwise. The reaction mixture was allowed to warm to ambient temperature and stirred for 1 h. The reaction mixture was quenched with a saturated aqueous ammonium chloride solution (20 mL) and further diluted with water (20 mL). The crude material was extracted into ethyl acetate (2 x 30 mL). The combined organic phases were dried over sodium sulfate and concentrated under vacuum to give a brown oil (2.66 g), which was loaded onto a 50g KP-silica cartridge and eluted from a 0-90% ethyl acetate in heptane gradient, using the biotage isolera 4, to afford the title compound (1.083 g, 46.7%) as a yellow solid. δΗ (500 MHz, CDCI3) 8.84 (s, 2H), 4.91 (s, 1H), 4.35 (d, J 9.0 Hz, 2H), 4.22 (d, J 9.1 Hz, 2H), 1.48 (s, 9H).
INTERMEDIATE 150 fert-Butyl 3 -(5 -bromopyrimidin-2-yl)- 3 -[(trimethylsilvOoxyl azetidine- 1 -carboxylate
A solution of Intermediate 149 (1.07 g, 3.24 mmol) and imidazole (265 mg, 3.89 mmol) in dichloromethane (20 mL) was treated with trimethylsilyl chloride (0.44 mL, 3.41 mmol) at room temperature and stirred for 1 h under nitrogen. Further imidazole (100 mg) and trimethylsilyl chloride (0.15 mL) were added and stirring was continued at room temperature for another hour. The reaction mixture was washed with water (2 x 20 mL). The aqueous washes were extracted with dichloromethane (20 mL). The combined organic extracts were dried over sodium sulfate and concentrated in vacuo. The resulting crude brown oil (1.19 g) was loaded onto a 25 g KP-silica cartridge and eluted from a 0- 30% ethyl acetate in heptane gradient, using the biotage isolera 4, to afford the title compound (814 mg, 62%) as a pale yellow solid. δΗ (500 MHz, CDC13) 8.82 (s, 2H), 4.48 (d, J9.5 Hz, 2H), 4.17 (d, J 9.5 Hz, 2H), 1.45 (s, 9H), 0.05 (s, 9H).
INTERMEDIATE 151 tert-Butyl 3 -[5-(4,4,5 ,5 -tetramethyl- 1 ,3 ,2-dioxaborolan-2-yl)pyrimidin-2-yll -3- [(trimethylsilyl)oxyl azetidine- 1 -carboxylate
To a stirring solution of Intermediate 150 (810 mg, 2.01 mmol) in 1,4-dioxane (20 mL) were added bis(pinacolato)diboron (610 mg, 2.40 mmol) and potassium acetate (600 mg, 6.11 mmol). The stirring mixture was degassed with nitrogen for 5 minutes, then Pd(dppf)Cl2 complex with DCM (80 mg, 0.098 mmol) was added and the mixture was stirred at 100°C for 3 h. The reaction mixture was allowed to cool and then filtered through celite, washing through with ethyl acetate (30 mL). The filtrate was concentrated in vacuo to give a dark oil which was loaded onto a 25g KP-silica cartridge and eluted from a 0-80% ethyl acetate in heptane gradient, using the biotage isolera 4 system, to afford the title compound (578 mg, 64%) as a brown solid. δΗ (500 MHz, CDC13) 9.04 (s, 2H), 4.52 (d, J 9.2 Hz, 2H), 4.17 (d, J9.2 Hz, 2H), 1.45 (s, 9H), 1.36 (s, 12H), 0.02 (s, 9H). INTERMEDIATE 152
4-(5-Bromopyrimidin-2-yl)oxan-4-ol
5-Bromo-2-iodopyrimidine (2 g, 7.02 mmol) was dissolved in dry toluene (30 mL) and cooled to -78°C under N2. n-Butyllithium in hexanes (2.5M, 2.95 mL) was added dropwise and the reaction was stirred for 15 minutes, prior to dropwise addition of tetrahydro-4H-pyran-4-one (0.77 g, 7.72 mmol). The reaction mixture was stirred at -78°C for 30 minutes and then allowed to warm to room temperature. The reaction mixture was diluted with water (50 mL) and extracted with ethyl acetate (2 x 50 mL).
The combined organic extracts were dried over magnesium sulphate and filtered, then the solvent was removed under reduced pressure. The resulting orange oil (1.91 g) was absorbed onto a 50g KP-Sil column and the products were eluted with 10-100% ethyl acetate in heptanes, on a Biotage Isolera 4, to afford the title compound (762 mg, 42%) as a yellow oil. δΗ (500 MHz, CDC13) 8.79 (s, 2H), 4.24 (s, 1H), 3.99-3.89 (m, 4H), 2.37 (td, J 12.3, 11.6, 6.3 Hz, 2H), 1.54 (dd, J 13.6, 2.0 Hz, 2H).
INTERMEDIATE 153 5-Bromo-2-{4-r(trimethylsilyl)oxy1oxan-4-yl|pyrimidine
Trimethylsilyl chloride (277 mg, 2.55 mmol) was added to a stirred solution of Intermediate 152 (85%, 740 mg, 2.43 mmol) and imidazole (198 mg, 2.91 mmol) in DCM (15 mL) and the reaction mixture was stirred for 1 h. Additional trimethylsilyl chloride (0.25 eq) and imidazole were added and stirring was continued for 1 h. The reaction mixture was washed with water (2 x 15 mL) and the aqueous phase was re- extracted with DCM (20 mL). The combined organic extracts were dried over magnesium sulphate, filtered and concentrated under reduced pressure. The resulting yellow oil was purified on Biotage Isolera Snap 25g KP-Sil column, eluting with 0-15% ethyl acetate in heptanes, to afford the title compound (623 mg, 77%) as a yellow oil, which crystallised upon standing. δΗ (500 MHz, CDC13) 8.80 (s, 2H), 3.90 (td, J 11.0, 2.5 Hz, 2H), 3.74 (dt, J 11.4, 4.1 Hz, 2H), 2.26 (ddd, J 14.1, 10.4, 4.4 Hz, 2H), 1.99 (dt, J 11.6, 2.1 Hz, 2H), -0.05 (s, 9H). INTERMEDIATE 154
5-(4,4,5,5-Tetramethyl-l ,3,2-dioxaborolan-2-yl)-2-{4-[(trimethylsilyl)oxyloxan-4-yl|- pyrimidine
A solution of Intermediate 153 (623 mg, 1.88 mmol) in anhydrous 1,4-dioxane
(25 mL) was treated with bis(pinacolato)diboron (573 mg, 2.26 mmol) and potassium acetate (0.35 mL, 5.64 mmol). The mixture was degassed with N2 for 10 minutes prior to addition of Pd(dppf)Cl2 complex with DCM (77 mg, 0.09 mmol). The reaction mixture was stirred at 80°C for 1 h. The reaction mixture was concentrated in vacuo and redissolved in ethyl acetate (30 mL), then washed with 10% w/v citric acid solution (30 mL). The organic phase was dried (magnesium sulfate) and the solvent was removed under reduced pressure. The resulting crude brown oil was purified on Biotage Isolera (Snap 25g KP-sil), eluting with 10-40% ethyl acetate in heptanes. However, good chromatography was not observed. Product-containing fractions were combined to afford the title compound (228 mg, 25%) as a yellow oil that crystallised upon standing. 5H (500 MHz, CDCls) 9.01 (s, 2H), 3.91 (t, J9.9 Hz, 2H), 3.79-3.69 (m, 2H), 2.38-2.23 (m, 2H), 1.98 (d, J 13.2 Hz, 2H), 1.36 (s, 12H), -0.06 (s, 9H).
INTERMEDIATE 155
5-Bromo-N-{[2-(difluoromethoxy)-5-fluorophenyllmethyl|-4-fluoro-2-nitroaniline
l-Bromo-2,5-difluoro-4-nitrobenzene (2.3 g, 9.66 mmol), [2-(difluoromethoxy)-5- fluorophenyljmethanamine (2 g, 0.01 mol) and triethylamine (1.48 mL, 0.01 mol) were stirred in DMF (10 mL) at room temperature overnight. Water (20 mL) was added and the mixture was extracted with ethyl acetate (2 x 50 mL). The organic phase was dried over sodium sulfate and concentrated under vacuum. The resulting yellow liquid was purified on a Biotage Isolera 4, eluting with 0-50% ethyl acetate in heptanes, to afford the title compound (3.96 g, 100%) as a yellow-orange solid. δΗ (500 MHz, CDC13) 8.29-8.13 (m, 1H), 7.99 (d, J 8.6 Hz, 1H), 7.18-7.07 (m, 3H), 7.04 (d, J 5.7 Hz, 1H), 6.45 (t, J73.3 Hz, 1H), 4.56 (d, J5.7 Hz, 2H). INTERMEDIATE 156
6-Bromo- 1 - {[2-(difluoromethoxy)-5-fluorophenyllmethyl| -5-fluoro-2-methyl- benzimidazole
Intermediate 155 (3.96 g, 9.68 mmol) was dissolved in EtOH (50 mL) and glacial acetic acid (4 mL). Iron powder (2.69 g, 48.2 mmol) was added and the reaction mixture was heated at 70°C for 45 minutes. The reaction mixture was allowed to cool to room temperature and filtered through Kieselguhr, washing through with ethyl acetate. The brown filtrate was concentrated under vacuum to give a black gum. Trimethyl orthoacetate (14 mL, 116.31 mmol) was added, followed by cone. HC1 (0.3 mL), and the reaction mixture was stirred at room temperature for 45 minutes. The reaction mixture was diluted with DCM (100 mL), then washed with water (50 mL), saturated sodium hydrogencarbonate solution (80 mL) and brine (10 mL). Each aqueous wash was re- extracted with DCM (20 mL). The combined organic extracts were dried over sodium sulfate and concentrated under vacuum. The resulting green/brown solid was triturated with ethyl acetate/heptanes. The resulting green solid was dissolved in ethyl acetate (10 mL) and heptanes (30 mL) and sonicated to afford a fine brown suspension, which was collected by filtration, to afford the title compound (1.4 g, 36%) as a light brown solid. 5H (500 MHz, CDC13) 7.54-7.37 (m, 2H), 7.18-7.08 (m, 2H), 6.54 (s, 1H), 6.36 (t, J73.0 Hz, 1H), 5.33 (s, 2H), 2.64 (s, 3H).
INTERMEDIATE 157
5-Bromo-N- {(IR or IS)-1 -r2-(difluoromethoxy)phenvHethyl| -4-fluoro-2-nitroaniline (Isomer B)
A mixture of l-bromo-2,5-difluoro-4-nitrobenzene (800 mg, 3.36 mmol), Intermediate 130 (800 mg, 3.58 mmol) and DIPEA (1.2 mL, 7.24 mmol) in DMF (10 mL) was stirred at 55°C for 7 h, then allowed to stand at room temperature overnight. The reaction mixture was diluted with ethyl acetate (50 mL) and washed with water (3 x 50 mL). The aqueous layer was separated and further extracted with ethyl acetate (40 mL). The combined organic phases were dried over sodium sulfate and concentrated in vacuo. The resulting orange-coloured oil (2.3 g) was loaded onto a 25 g KP-silica cartridge and eluted from a 0-30% ethyl acetate in heptanes gradient, using the biotage isolera 4, to afford the title compound (1.20 g, 86%) as an orange-coloured oil. δΗ (500 MHz, CDC13) 8.26 (d, J 6.0 Hz, IH), 7.93 (d, J 8.7 Hz, IH), 7.36-7.28 (m, 2H), 7.22-7.15 (m, 2H), 6.88 (d, J5.8 Hz, IH), 6.69 (t, J73.3 Hz, IH), 5.03 (dq, J6.6 Hz, IH), 1.63 (d, J 6.7 Hz, 3H).
INTERMEDIATE 158
6-Bromo- 1 - {(IR or IS)- 1 -[2-(difluoromethoxy)phenyllethyl| -5-fluoro-2-methyl- benzimidazole (Isomer B)
A solution of Intermediate 157 (1.2 g, 2.90 mmol) in a mixture of ethanol (20 mL) and glacial acetic acid (2 mL) was treated with iron powder (810 mg, 14.5 mmol) and the mixture was stirred at 70°C for 45 minutes. The reaction mixture was allowed to cool and then filtered through celite, washing through with ethyl acetate (100 mL). The filtrate was concentrated under vacuum. The resulting dark oil was dissolved in trimethyl orthoacetate (4.5 mL), treated with cone. HC1 (0.1 mL) and stirred at room temperature for 45 minutes. The reaction mixture was diluted with DCM (50 mL) and washed with saturated sodium bicarbonate solution (40 mL). The organic layer/suspension was separated and filtered through celite. The filtrate was dried over sodium sulfate and concentrated under vacuum. The resulting brown oil was loaded onto a lOg HP-silica cartridge and eluted from a 0-90% ethyl acetate in heptane gradient, using the biotage isolera 4, to afford the title compound (249 mg, 19%>) as a brown solid. LCMS pH 10: MH+: m/z 399/401, RT 1.93 minutes (89%).
INTERMEDIATE 159
5-Bromo-N- {(\R or \S)-\ -[2-(difluoromethoxy)phenyllethyl| -4-fluoro-2-nitroaniline
(Isomer A
A mixture of l-bromo-2,5-difluoro-4-nitrobenzene (2.0 g, 8.40 mmol),
Intermediate 127 (2 g, 8.94 mmol) and DIPEA (3 mL, 18.11 mmol) in N,N-dimethyl- formamide (25 mL) was stirred at room temperature for 20 h, followed by stirring at 50°C for 5 h. The reaction mixture was diluted with ethyl acetate (80 mL) and washed with water (3 x 50 mL). The combined aqueous layers were further extracted with ethyl acetate (40 mL). The combined organic phases were dried over sodium sulfate and concentrated under vacuum. The resulting orange-coloured oil (3.60 g) was loaded onto a 50 g KP-silica cartridge and eluted from a 0-30% ethyl acetate in heptanes gradient, using the biotage isolera 4, to afford the title compound (3.1 g, 85.6%>) as an orange-coloured oil. δΗ (500 MHz, CDCls) 8.26 (d, J6.0 Hz, IH), 7.93 (d, J 8.7 Hz, IH), 7.35-7.28 (m, 2H), 7.22-7.16 (m, 2H), 6.88 (d, J5.8 Hz, IH), 6.69 (t, J 73.4 Hz, IH), 5.03 (dq, J6.6 Hz, IH), 1.62 (d, J 6.7 Hz, 3H).
INTERMEDIATE 160 6-Bromo- 1 - i(lR or IS)- 1 -r2-(difluoromethoxy)phenyl1ethyl| -5-fluoro-2-methyl- benzimidazole (Isomer A)
A solution of Intermediate 159 (3.1 g, 7.65 mmol) in a mixture of ethanol (50 mL) and glacial acetic acid (4 mL) was treated with iron powder (2 g, 35.81 mmol) and the mixture was stirred at 70°C for 45 minutes. The reaction mixture was allowed to cool and then filtered through celite, washing through with ethyl acetate (100 mL). The filtrate was concentrated under vacuum to give a dark oil, which was dissolved in trimethyl orthoacetate (11 mL), treated with cone. HC1 (0.3 mL) and stirred at room temperature for 45 minutes. The reaction mixture was diluted with dichloromethane (100 mL) and washed with water (50 mL) followed by saturated sodium bicarbonate solution (80 mL). The organic layer/suspension was separated and filtered through celite. The filtrate was dried over sodium sulfate and concentrated under vacuum to give a brown solid, which was suspended in hot ethyl acetate (10 mL). The suspension was diluted with heptanes (30 mL) and allowed to cool. The resulting precipitate was collected by filtration and dried by vacuum oven to afford the title compound (2.26 g, 77.9%) as a pale beige- coloured solid. LCMS Method B: MH+: m/z 399/401, RT 1.83 minutes (99%).
INTERMEDIATE 161
3-r5-(4,4,5,5-Tetramethyl-l,3,2-dioxaborolan-2-yl)pyrimidin-2-yl1oxetan-3-ol
The title compound was prepared from Intermediate 143 and bis(pinacolato)- diboron in accordance with the method described for Intermediate 154. INTERMEDIATE 162
l-( r2-(Difluoromethoxy)phenyl1methyl| -6-(6-methoxypyridin-3 -yl)benzimidazole-2- carbaldehyde
Example 238 (2.80 g, 9.25 mmol) was suspended in 1,4-dioxane (100 mL) and dichloromethane (30 mL). The mixture was degassed and activated manganese(IV) oxide (8.05 g, 92.5 mmol) was added. The mixture was stirred and warmed at 30°C for 6 h under nitrogen. Whilst still warm, the reaction mixture was filtered through a celite pad and washed well with 1,4-dioxane. The organic layers were concentrated in vacuo to give the title compound (2.05 g, 74%) as a pale purple solid. δΗ (400 MHz, DMSO-d6) 10.02 (s, 1H), 8.54 (m, 1H), 8.03 (m, 3H), 7.67 (m, 1H), 7.25 (m, 4H), 6.92 (m, 1H), 6.72 (m, 1H), 5.97 (s, 2H), 3.89 (s, 3H). LCMS (pHIO): MH+ 410.6, RT 2.48 minutes, 97% purity by UV. INTERMEDIATE 163
Methyl 1 - { r2-(difluoromethoxy)phenyl1methyl| -2-methylbenzimidazole-6-carboxylate Prepared by a method analogous to that used to prepare Intermediate 47, starting from methyl 3-fluoro-4-nitrobenzoate, to give the title compound (12.7 g, 83%) as a brown solid. LCMS (pH 10) mlz 347 [M+H]+, RT 2.32 minutes.
INTERMEDIATE 164
(l-([2-(Difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)methanol
To a stirred solution of lithium aluminium hydride (2.55 g 0.067 mol) in THF (20 mL) at 0°C was added dropwise Intermediate 163 (11.7 g, 0.033 mol) dissolved in THF (10 mL) and the resulting mixture was stirred at room temperature for 2 h. The mixture was cooled to 0°C and quenched by the addition of ethyl acetate and water. The residue was filtered, then the filtrate was dried over anhydrous sodium sulfate and concentrated in vacuo, to obtain the title compound (6.8 g, 63%) as a yellow solid. LCMS (pH 10) mlz 319 [M+H]+, RT 1.72 minutes. INTERMEDIATE 165
6-(Chloromethyl)- 1 - { [2-(difluoromethoxy)phenyllmethyl| -2-methylbenzimidazole
To a stirred solution of Intermediate 164 (7.5 g, 0.02 mol) in DCM (40 mL), cooled at 0°C, was added thionyl chloride (8.3 g, 0.07 mol) and reaction mass was stirred at room temperature for 3 h. The reaction mixture was concentrated in vacuo to obtain a crude solid, which was washed with ether, to obtain the title compound (7.8 g, 98%) as an off white solid compound. LCMS (pH 10) mlz 337 [M+H]+, RT 2.45 minutes. INTERMEDIATE 166
5-(Chloromethyl)-l-{[2-(difluoromethoxy)phenyllmethyl| -2-methylbenzimidazole
The title compound was prepared by methods analogous to those used to prepare Intermediate 165, starting from methyl 4-fluoro-3-nitrobenzoate.
INTERMEDIATE 167
(tert-Butyl)(cyclopent-3-en- 1 -yloxy)dimethylsilane
Cyclopent-3-en-l-ol (10 g, 118.9 mmol) was dissolved in DMF (100 mL) at 0°C, then IH-imidazole (17.29 mL, 261.5 mmol) was added, followed by (tert-butyl)(chloro)- dimethylsilane (21.5 g, 142.7 mmol). The reaction mixture was allowed to warm, then stirred at room temperature for 14 h. The mixture was diluted with ethyl acetate (300 mL) and washed with 5% aqueous LiCl solution (2 x 100 mL) and brine (50 mL), then dried over sodium sulfate, filtered and concentrated in vacuo. The crude residue was purified by chromatography, eluting with 0-10% EtOAc in hexane, to afford the title compound (17.2 g, 73%) as a colourless clear liquid. 5H (250 MHz, CDC13) 5.66 (s, 2H), 4.53 (tt, J7.0, 3.6 Hz, 1H), 2.57 (dd, J 15.2, 6.8 Hz, 2H), 2.27 (dd, J 15.3, 3.6 Hz, 2H), 0.89 (s, 9H), 0.06 (s, 6H).
INTERMEDIATE 168
Ethyl 3-r(tert-butyldimethylsilyl)oxy1bicvclor3.1.01hexane-6-carboxylate
l-(2-Ethoxy-2-oxoethylidene)diazenium (6.07 mL, 48.4 mmol) in DCM (4 mL) was added slowly via syringe pump over 6 h to a stirred solution of Intermediate 167 (8 g, 40.3 mmol) and rhodium(II) acetate (178.24 mg, 0.4 mmol) in DCM (150 mL) under nitrogen at room temperature. The mixture was stirred for 14 h, then filtered through celite and concentrated under reduced pressure. The resulting crude light brown oil was purified by column chromatography, eluting with 5-30% ethyl acetate in heptane, to afford the title compound (7.15 g, 59%) as a mixture of isomers (exo:endo; 2.5: 1) as a colourless clear oil. δΗ (500 MHz, CDC13) 4.12-4.03 (m, 2H), 2.13 (dd, J 13.0, 7.2 Hz, 1H), 2.05 (ddd, J 13.2, 5.8, 3.4 Hz, IH), 1.88-1.69 (m, 4H), 1.51 (d, J 14.7 Hz, IH), 1.28- 1.19 (m, 4H), 0.88-0.82 (m, 9H), 0.04-0.03 (m, 6H).
INTERMEDIATE 169
Ethyl 3-hvdroxybicvclor3.1.01hexane-6-carboxylate
TBAF (1M, 68.13 mL) was added dropwise to a stirred solution of Intermediate 168 (95% pure, 10.2 g, 34.06 mmol) in THF (100 mL) at room temperature, then the mixture was heated at 50°C for 1 h. The mixture was cooled to room temperature and concentrated under reduced pressure. The resulting light brownish oil was diluted with ethyl acetate (300 mL) and washed with water (2 x 100 mL) and brine (50 mL), then dried over magnesium sulfate and concentrated under reduced pressure, to provide the title compound (9.4 g crude, assumed 100%) conversion) as a light reddish oil. δΗ (500 MHz, CDC13) 4.15-4.05 (m, 2H), 2.26 (dd, J 13.1, 7.1 Hz, IH), 2.20-2.11 (m, IH), 1.99- 1.93 (m, IH), 1.92-1.84 (m, 4H), 1.84-1.75 (m, IH), 1.64-1.53 (m, IH), 1.30-1.20 (m, 3H). INTERMEDIATE 170
Ethyl n^^ff^iS S-oxobicyclop.1.01hexane-6-carboxylate
Intermediate 169 (60%> pure, 9.4 g, 33.14 mmol) was dissolved in DCM (100 mL), then Dess-Martin Periodinane (28.11 g, 0.07 mol) was added in one portion and the mixture was stirred at room temperature for 15 h. The mixture was diluted with DCM (200 mL) and washed with saturated aqueous sodium bicarbonate solution (2 x 100 mL), water (100 mL) and brine (50 mL), then dried over sodium sulfate and concentrated under reduced pressure. The resulting crude sticky off-white solid was purified by flash chromatography, eluting with 30-100% ethyl acetate in heptane, to afford the title compound (3.15 g, 56%) as a light brown oil. δΗ (500 MHz, CDC13) 4.15 (q, J 7.1 Hz, 2H), 2.66 (ddt, J 18.5, 3.9, 1.6 Hz, 2H), 2.31 (d, J 1.8 Hz, 1H), 2.27 (d, J 1.7 Hz, 2H), 2.18 (td, J3.4, 1.6 Hz, 2H), 1.31-1.23 (m, 4H).
INTERMEDIATE 171
Ethyl (16',56',6i?)-3-(trifluoromethanesulfonyloxy)bicyclo[3.1.01hex-2-ene-6-carboxylate Intermediate 170 (3 g, 17.84 mmol) was dissolved in dry toluene (60 mL), DIPEA (12.5 mL, 71.35 mmol) was added and the reaction mixture was heated to 45°C. Triflic anhydride (12 mL, 71.35 mmol) was added, and the temperature rose to 70°C. The reaction mixture was cooled using an ice bath. The mixture was stirred for 1.5 h at 45°C. The reaction mixture was diluted with ethyl acetate (200 mL) and washed with saturated aqueous sodium bicarbonate solution (2 x 100 mL). The aqueous washes were extracted with ethyl acetate (200 mL) and washed with sat. sodium bicarbonate (2 x 100 mL). The aqueous washes were extracted (100 mL), then the organic extracts were combined, washed with brine (50 mL), dried over sodium sulfate and concentrated. The crude product was purified by chromatography, eluting with 0-20% ethyl acetate in heptane to afford the title compound (2.73 g, 51%). δΗ (250 MHz, CDC13) 5.87 (d, J 1.9 Hz, 1H), 4.14 (q, J7.1 Hz, 2H), 3.00 (dd, J 17.2, 6.2 Hz, 1H), 2.75-2.60 (m, 1H), 2.46-2.31 (m, 1H), 2.23-2.11 (m, 1H), 1.39-1.32 (m, 1H), 1.32-1.16 (m, 3H).
INTERMEDIATE 172 EthvUltS,5tS,6i? -3-(4,4,5,5-tetramethyl-l,3.2-dioxaborolan-2-vnbicvclor3.1.01hex-2-ene- 6-carboxylate
Intermediate 171 (2.73 g, 9.09 mmol) was dissolved in 1,4-dioxane (60 mL) and degassed using nitrogen for 5 minutes. Bis(pinacolato)diborane (3.46 g, 13.64 mmol), potassium acetate (2.68 g, 27.28 mmol), 1 , 1 '-bis(diphenylphosphanyl)ferrocene (0.15 g, 0.27 mmol) and Pd(dppf)Cl2 complex with dichloromethane (0.22 g, 0.27 mmol) were added and the reaction mixture was heated under nitrogen at 90°C for 18 h. The reaction mixture was diluted with ethyl acetate (200 mL) and washed with a saturated aqueous solution of sodium bicarbonate (2 x 100 mL). The aqueous washes were re-extracted with ethyl acetate (50 mL). The organic extracts were combined, washed with brine, dried over sodium sulfate and concentrated. The crude residue was purified by
chromatography, eluting with 0-40% ethyl acetate in heptane, to afford the title compound (2.0 g, 59%)) containing bis(pinacolato)diborane impurity. 5H (250 MHz, CDC13) 6.66 (d, J 1.9 Hz, 1H), 4.11 (q, J 7.1 Hz, 2H), 2.88-2.73 (m, 1H), 2.66-2.44 (m, 2H), 2.33-2.22 (m, 1H), 1.34-1.18 (m, 16H).
INTERMEDIATE 173 6-Bromo- 1 - { r2-(difluoromethoxy)phenyl1methyl| -5-fluoro-2-(methoxymetfivD- benzimidazole
The title compound was prepared by a method analogous to Method K, starting with l-bromo-2,5-difluoro-4-nitrobenzene and 2-(difluoromethoxy)benzylamine, and effecting benzimidazole formation using methoxyacetic acid. LCMS (pH 10) m/z All .6 [M+H]+, RT 2.46 minutes.
INTERMEDIATE 174
2-Methyl- 1 -(1 -phenylethyl)benzimidazol-6-ol
The title compound can be prepared by a method analogous to that used to prepare Intermediate 101, starting from 2-fluoro-4-methoxy-l -nitrobenzene and 1 -phenyl - ethanamine, according to the method of Intermediate 47, followed demethylation according to the method of Intermediate 101. QC LCMS m/z 253 (M+H)+, RT 1.65 minutes.
INTERMEDIATE 175
(6-Bromo- l-r(2,5-dimethylphenyl)methyl1benzimidazol-2-yl|(phenyl)methanol
The title compound was synthesised from benzaldehyde by the method described for Intermediate 30. INTERMEDIATE 176
1 - [(2,5 -DimethylphenyDmethyl] -5 -(trifluoromethyl)benzimidazole
The title compound can be synthesised from l-fluoro-2-nitro-4-(trifluoromethyl)- benzene and (2,5-dimethylphenyl)methanamine in accordance with the first two steps of Method K and subsequent cyclisation with formic acid.
INTERMEDIATE 177 Ethyl 4-(4,4,5 ,5 -tetramethyl- 1 ,3 ,2-dioxaborolan-2-yl)cvclohex-3-ene- 1 -carboxylate
Lithium hexamethyldisilazide in THF/ethylbenzene (1M, 5.55 mL) was added dropwise to a stirred solution of ethyl 4-oxocyclohexanecarboxylate (900 mg, 5.29 mmol) in anhydrous THF (5 mL) under an inert atmosphere at -78°C and the mixture was stirred for 1 h. l,l,l-Trifluoro-N-phenyl-N-[(trifluoromethyl)sulfonyl]methanesulfonamide (1.98 g, 5.55 mmol) in THF (5 mL) was added over 5 minutes and the mixture was stirred for 30 minutes. The reaction mixture was then warmed to room temperature and stirred for 12 h. The mixture was quenched with NaHS04 and diluted with ethyl acetate (250 mL), then washed with 0.5M aqueous NaOH solution (2 x 20 mL), saturated aqueous NH4C1 solution (20 mL) and brine (20 mL). The organic fraction was then dried over MgS04 and concentrated under reduced pressure. The resulting material (1.9 g, 83%) was dissolved in 1,4-dioxane (30 mL), 4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-l,3,2- dioxaborolan-2-yl)-l,3,2-dioxaborolane (1.68 g, 6.6 mmol) and l,l '-bis(diphenyl- phosphanyl)ferrocene (73 mg, 0.13 mmol) were added and the mixture was degassed with N2 for 5 minutes. Bis[3-(diphenylphosphanyl)cyclopenta-2,4-dien-l-yl]iron dichloro- palladium dichloromethane complex (108 mg, 0.13 mmol) was added and the mixture was heated at 90°C for 18 h. The mixture was diluted with water (100 mL) and extracted with ethyl acetate (2 x 100 mL). The combined organic layers were washed with brine (50 mL), dried over MgS04 and concentrated under reduced pressure. The residue was purified by silica gel chromatography, eluting with 10-20% ethyl acetate in heptane, to afford the title compound in two batches (440 mg, 26%, 73% purity; and 362 mg, 12%, 42% purity) as a colourless oil. Method B HPLC-MS: MH+ mlz 281, RT 2.37 minutes (73%). INTERMEDIATE 178
Ethyl 4-[5-(4A5,5-tetramethyl-l ,3,2-dioxaborolan-2-yl)pyrimidin-2-yllcyclohex-3-ene- 1-carboxylate
A stirred mixture of Intermediate 177 (13.6 g, 48.5 mmol), 5-bromo-2-iodo- pyrimidine (13.83 g, 48.5 mmol) and sodium carbonate (15.43 g, 146 mmol) in 1,2- dimethoxyethane (300 mL) and water (100 mL) was flushed with argon (three vacuum- argon cycles). l, -Bis(diphenylphosphino)ferrocenepalladium(II) dichloride (1.189 g, 1.456 mmol) was added and the resulting mixture was stirred at 90°C for 5 h. The reaction mixture was cooled to room temperature and quenched in water (500 mL). Brine (200 mL) and EtOAc (200 mL) were added under stirring. The layers were separated and the aqueous layer was extracted three times with EtOAc. The combined extracts were washed with brine, dried with Na2S04 and concentrated in vacuo. The resulting brown oily solid (20.8 g) was used directly without further purification. A stirred mixture of the foregoing material (12.9 g, 20.73 mmol, 50%), bis(pinacolato)diboron (12.9 g, 22.86 mmol, 45%) and potassium acetate (6.10 g, 62.2 mmol) in anhydrous 1,4-dioxane (120 mL) was flushed with argon (three vacuum-argon cycles) for 5 minutes. 1,1 '-Bis- (diphenylphosphino)ferrocenepalladium(II) dichloride (0.508 g, 0.622 mmol) was added and the resulting mixture was stirred at 90°C for 1 h to give a dark brown-black suspension. The reaction mixture was cooled to room temperature and filtered over a pad of kieselguhr, which was rinsed with EtOAc. The filtrate was concentrated in vacuo to yield a crude solid, which was was triturated in boiling heptane/diisopropyl ether (1 : 1, 100 mL). The whole was filtered over kieselguhr and rinsed with hot heptane/diisopropyl ether (3 x 100 mL). The filtrate was concentrated in vacuo, yielding the title compound (11.0 g) as a pale beige solid. LCMS (pH 10): m/z 277 (mass ion for the boronic acid derivative), RT 1.76 minutes.
EXAMPLE 1 (METHOD B) [ 1 -(2,5-DimethylbenzyD- lH-benzimidazol-2-yl"|methanol
To a solution of Intermediate I (20.0 g, 135.0 mmol) in DMF (60 mL) were added 2,5-dimethylbenzyl chloride (20.9 g, 135.0 mmol) and potassium carbonate (37.3 g, 270.0 mmol). The mixture was stirred at r.t. for 18 h. Water (50 mL) was added and the mixture was poured into ethyl acetate/water. The organic layer was separated, dried (MgS04) and concentrated in vacuo to afford the title compound (21.6 g, 60%) as an off- white solid. δΗ (dg-DMSO) 7.64 (d, J7.2 Hz, IH), 7.26 (d, J 7.2 Hz, IH), 7.20-7.13 (m, 2H), 7.11 (d, J 7.2 Hz, IH), 6.96 (d, J7.2 Hz, IH), 6.19 (s, IH), 5.61 (t, J 5.6 Hz, IH), 5.50 (s, 2H), 4.63 (d, J 6.0 Hz, 2H), 2.32 (s, 3H), 2.03 (s, 3H). LCMS (ES+) 267 (M+H)+.
EXAMPLE 2 (METHOD C)
Γ 1 -(2,5-DimethylbenzvD- lH-benzimidazol-2-yl1(pyridin-4-yl)methanol
To a solution of Intermediate 2 (0.25 g, 1.06 mmol) in THF (10 mL) at -78°C was added 1.6M n-butyllithium (0.79 mL, 1.27 mmol) slowly dropwise and the reaction mixture was stirred for 20 minutes. Isonicotinaldehyde (0.17 g, 1.59 mmol) in THF (1 mL) was added slowly dropwise. After a further 10 minutes the reaction mixture was quenched with water (1 mL) and allowed to warm to r.t. The reaction mixture was poured into ethyl acetate/water. The organic layer was separated, dried (MgS04) and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0- 30% MeOH/DCM), yielding the title compound (0.2 g, 55%) as an off-white solid. 5H (CDC13) 8.31 (d, J 5.9 Hz, 2H), 7.69 (d, J 8.0 Hz, IH), 7.28-7.16 (m, 4H), 7.00-6.95 (m, 2H), 6.87-6.85 (m, IH), 6.16 (s, IH), 5.84 (s, IH), 5.35-5.09 (dd, JAB 17.0 Hz, 2H), 2.25 (s, 3H), 1.89 (s, 3H). LCMS (ES+) 344 (M+H)+.
EXAMPLES 3A AND 3B
(R)-\ 1 -(2,5-DimethylbenzvD- lH-benzimidazol-2-yl1(phenyl)methanol and
(6 -ri-(2,5-Dimethylbenzyl)-lH-benzimidazol-2-yl1(phenyl)methanol
Prepared from Intermediate 2 and benzaldehyde in accordance with Method C. 5H (CDCI3) 7.77 (d, J 8.1 Hz, IH), 7.26-7.13 (m, 7H), 6.99-6.95 (m, 2H), 6.86-6.84 (m, IH), 5.93 (s, 2H), 5.06 (dd, JAB 11.5 Hz, 2H), 2.12 (s, 3H), 1.93 (s, 3H). LCMS (ES+) 342 (M+H)+. The two enantiomers were separated by chiral preparative chromatography (Chiralpak AD, 100*500, 300 mL/min, heptane/isopropanol 95:5), RT 7.91 minutes and 10.75 minutes. REFERENCE EXAMPLE 4
1 -[ 1 -(2,5-Dimethylbenzyl)- lH-benzimidazol-2-yllpropan- 1 -ol
The title compound was acquired from Specs & Biospecs BV, Delft, Netherlands. LCMS (ES+) 295 (M+H)+.
EXAMPLES 5 TO 10
The following compounds were synthesised from Intermediate 2 and the appropriate substituted aldehyde in accordance with Method C.
Figure imgf000168_0001
EXAMPLE 11 3-d - (r 1 -(2,5-Dimethylbenzvn-lH-benzimidazol-2-yllmethyll - \H-\ 1 ,2,31triazol-4- vDphenol
3-Ethynylphenol (0.07 mL, 0.7 mmol) and CuS04.5H20 (0.02 g, 0.7 mmol) were added to a solution of Intermediate 3 (0.2 g, 0.7 mmol) in THF/water (1 : 1, 4 mL). A catalytic amount of sodium ascorbate was added and the mixture stirred at r.t. for 5 minutes. The reaction mixture was then poured into DCM/water. The organic layer was separated, dried (MgS04) and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-40% EtOAc/DCM), yielding the title compound (0.06 g, 21%) as a pale brown solid. δΗ (d6-DMSO) 9.47 (s, 1H), 8.48 (s, 1H), 7.68 (d, J 3.5 Hz, 1H), 7.35 (d, J5.5 Hz, 1H), 7.26-7.17 (m, 4H), 7.17 (d, J7.9 Hz, 1H), 6.88 (d, J 7.3 Hz, 1H), 6.71 (d, J7.2 Hz, 1H), 5.95 (s, 3H), 5.59 (s, 2H), 2.35 (s, 3H), 1.94 (s, 3H). LCMS (ES+) 410 (M+H)+.
EXAMPLE 12 (METHOD D) l-(2,5-Dimethylbenzyl)-2-[(pyridin-4-ylmethoxy)methyll-lH-benzimidazole
Sodium hydride (60%> dispersion in oil, 0.022 g, 0.56 mmol) was added to a stirred solution of Example 1 (0.05 g, 0.19 mmol) and 4-(bromomethyl)pyridine hydrobromide (0.06 g, 0.23 mmol) in DMF (1.5 mL) at 0°C, and the reaction mixture was stirred at r.t. for 1 h. The reaction mixture was poured into ethyl acetate/water. The organic layer was separated, dried (MgS04) and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-40% EtOAc/DCM), yielding the title compound (0.05 g, 83%) as a white solid. δΗ (d6-DMSO) 8.43 (d, J 5.6 Hz, 2H), 7.71 (m, 1H), 7.33 (m, 1H), 7.23 (m, 2H), 7.11 (m, 2H), 6.94 (d, J 7.6 Hz, 1H), 6.17 (s, 1H), 5.52 (s, 2H), 4.83 (s, 2H), 4.57 (s, 2H), 2.32 (s, 3H), 1.96 (s, 3H). LCMS (ES+) 358 (M+H)+.
EXAMPLE 13 l-(2,5-Dimethylbenzyl)-2-r(pyridin-3-ylmethoxy)methyl1-lH-benzimidazole
Synthesised from Example 1 and 3-(bromomethyl)pyridine hydrobromide accordance with Method D. LCMS (ES+) 358 (M+H)+.
EXAMPLE 14
1 -(2,5-Dichlorobenzyl)-2-(pyridin-4-ylmethyD- lH-benzimidazole
The title compound was prepared from Intermediate 4 and 2,5-dichlorobenzyl bromide in accordance with Method B and was isolated as a yellow solid. δΗ (d6-DMSO) 8.36 (d, J5.9 Hz, 2H), 7.69 (m, 1H), 7.50 (d, J 8.5 Hz, 1H), 7.37 (m, 1H), 7.31 (dd, J 8.5, 2.4 Hz, IH), 7.22 (m, 4H), 6.15 (d, J2.4 Hz, IH), 5.58 (s, 2H), 4.35 (s, 2H). LCMS (ES+)
EXAMPLE 15
1 -(2,5-Dimethylbenzyl)-2-(pyridin-4-ylmethyl)- lH-benzimidazole
The title compound was prepared from Intermediate 4 and 2,5-dimethylbenzyl bromide in accordance with Method B and was isolated as a yellow solid. 5H (d6-DMSO) 8.39 (m, 2H), 7.65 (m, IH), 7.32 (m, IH), 7.19 (m, 4H), 7.08 (d, J7.6 Hz, IH), 6.91 (d, J 7.6 Hz, IH), 5.89 (s, IH), 5.46 (s, 2H), 4.27 (s, 2H), 2.31 (s, 3H), 1.93 (s, 3H). LCMS (ES+) 328 (M+H)+.
EXAMPLE 16 1 -(2,5-Dimethylbenzyl)-2-[ 1 -(pyridin-4-ylmethoxy)ethyl"|- lH-benzimidazole
The title compound was prepared from Intermediate 7 and 4-(bromomethyl)- pyridine hydrobromide in accordance wit Method D. LCMS (ES ) 372 (M+H)+.
EXAMPLE 17 (METHOD E)
1 -(2,5-dimethylbenzyl)-2- { [(2-nitrobenzyl)oxy]methyl| - lH-benzimidazole
A mixture of Example I (0.20 g, 0.75 mmol), 2-nitrobenzyl bromide (0.16 g, 0.75 mmol) and silver oxide (0.52 g, 2.25 mmol) were stirred at r.t. in DCM for 18 h in the dark. The reaction mixture was filtered through a celite pad and concentrated in vacuo to give a residue which was purified by preparative HPLC to give the title compound.
LCMS (ES+) 402 (M+H)+.
EXAMPLE 18
1 -( 1 -Phenylethyl)-2- [(pyridin-4-ylmethoxy)methyll - lH-benzimidazole
The title compound was prepared from Intermediate 10 and 4-(bromomethyl)- pyridine hydrobromide in DMF, in accordance with Method E. LCMS (ES ) 344
(M+H)+. EXAMPLE 19
2-[(Difluoro)(pyridin-4-yl)methyll-l-(2,5-dimethylbenzyl)-lH-benzim
Mn02 (1.3 g, 14.6 mmol) was added to a solution of Example 2 (0.25 g, 0.73 mmol) in DCM (10 mL) and the mixture was stirred at r.t. for 15 minutes. The reaction mixture was filtered through a celite pad, washing several times with DCM, and then concentrated in vacuo. The residue was dissolved in DCM (10 mL), DAST (0.2 mL, 1.46 mmol) was added, and the mixture was stirred at r.t. for 18 h. The reaction mixture was poured onto a 2M aqueous solution of NaOH (15 mL)/DCM, then the organic layer was separated, dried (MgS04) and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-30% EtOAc/DCM), yielding the title compound (0.04 g, 14%) as a pale brown solid. δΗ (CDC13) 8.64 (d, J 5.6 Hz, 2H), 7.77 (d, J 6.1 Hz, IH), 7.44 (d, J 5.9 Hz, 2H), 7.27-7.20 (m, 2H), 7.07 (d, J 6.9 Hz, IH), 7.02 (d, J 7.7 Hz, IH), 6.89 (d, J 7.6 Hz, IH), 6.01 (s, IH), 5.48 (s, 2H), 2.29 (s, 3H), 1.97 (s, 3H). LCMS (ES+) 364 (M+H)+.
EXAMPLE 20
Γ 1 -(1 -PhenylethvD- lH-benzimidazol-2-vH(pyridin-4-yl)methanol
The title compound was prepared from Intermediate 11 and isonicotinaldehyde accordance with Method C. LCMS (ES+) 330 (M+H)+.
EXAMPLE 21
(6 -[l-(2,5-Dimethylbenzyl)-lH-benzimidazol-2-yll(phenyl)methanamine
DIPEA (0.20 mL, 1.0 mmol), HATU (0.4 g, 1.0 mmol) and (S)-2-(tert- butoxycarbonylamino)-2-phenylacetic acid (0.25 g, 1.0 mmol) were added to a solution of Intermediate 6 (0.22 g, 1.0 mmol) in DCM (5 mL), and the reaction mixture was stirred at r.t. for 4 h. The reaction mixture was partitioned between DCM and 5% aqueous HC1 solution and the organics washed with saturated aqueous sodium bicarbonate solution. The organic layer was extracted, dried (MgS04) and concentrated in vacuo. The residue was dissolved in acetic acid (5 mL) and heated to 60°C for 18 h. The reaction mixture was concentrated in vacuo and the residue purified by column chromatography (Si02, 0- 50% EtOAc/isohexane). The recovered material was dissolved in DCM (2 mL) and 4N HC1 in 1,4-dioxane (2 mL) and stirred at r.t. for 18 h. The reaction mixture was concentrated in vacuo and the residue was purified by preparative HPLC, yielding the title compound (0.05 g, 7%) as a white solid. δΗ (d6-DMSO) 7.69 (d, J 7.9 Hz, 1H), 7.32 (m, 2H), 7.19 (m, 5H), 7.07 (d, J 7.6 Hz, 1H), 6.89 (d, J7.6 Hz, 1H), 5.83 (s, 1H), 5.42 (m, 2H), 5.29 (s, 1H), 2.30 (s, 3H), 1.91 (s, 3H). LCMS (ES+) 342 (M+H)+.
EXAMPLE 22
6-Bromo- 1 -(1 -phenylethyl)-2-[(pyridin-4-ylmethoxy)methyll - lH-benzimidazole
The title compound was prepared from Intermediate 14 and 4-(bromomethyl)- pyridine hydrobromide in DMF, in accordance with Method E. δΗ (d6-DMSO) 8.82 (d, J 6.6 Hz, 2H), 7.86 (d, J6.4 Hz, 2H), 7.66 (d, J 8.5 Hz, 1H), 7.34 (m, 7H), 6.14 (m, 1H), 5.07 (s, 2H), 4.93 (s, 2H), 1.95 (d, J 7.1 Hz, 3H). LCMS (ES+) 424 (M+H)+.
EXAMPLE 23 (METHOD F)
1 - (4-Γ 1 -(2,5-dimethylbenzv0-2-(hvdroxymethyl)- lH-benzimidazol-6-yllphenyll ethanone
4-Acetylphenylboronic acid (0.05 g, 0.31 mmol), and a 2M aqueous solution of sodium carbonate (1 mL) were added to a solution of Intermediate 18 (0.10 g, 0.29 mmol) in 1,4-dioxane: water (4: 1, 5 mL) and the reaction mixture was degassed for 10 minutes. PdCl2(dppf) (0.01 mg, 0.05 mmol) was added and the reaction mixture was degassed for 10 minutes, then heated to 100°C for 60 minutes in a Biotage microwave reactor. Ethyl acetate was added and the mixture filtered through a Celite pad. The organic layer was separated, dried over anhydrous sodium sulphate, and concentrated in vacuo. The residue was purified by preparative HPLC, yielding the title compound as a white solid. LCMS (ES+) 385 (M+H)+. EXAMPLES 24 TO 28
The following compounds were synthesised from Intermediate 18 and the appropriate boronic acid in accordance with Method F. Example No. Compound Name LCMS
[l-(2,5-Dimethylbenzyl)-6-(pyridin-4-yl)-lH- LCMS (ES+) 344
24
benzimidazol-2-yl]methanol (M+H)+.
[ 1 -(2,5-Dimethylbenzyl)-6-(6-fluoropyridin-3-yl)- LCMS (ES+) 362
25
lH-benzimidazol-2-yl]methanol (M+H)+.
[l-(2,5-Dimethylbenzyl)-6-(quinolin-6-yl)-lH- LCMS (ES+) 394
26
benzimidazol-2-yl]methanol (M+H)+.
{6-[6-(Dimethylamino)pyridin-3-yl]-l-(2,5- LCMS (ES+) 387
27
dimethylbenzyl)-lH-benzimidazol-2-yl}methanol (M+H)+.
[6-(6-Aminopyridin-3-yl)-l-(2,5-dimethylbenzyl)- LCMS (ES+) 359
28
lH-benzimidazol-2-yl]methanol (M+H)+.
EXAMPLE 29 7- { Γ 1 -(2,5-DimethylbenzyD- lH-benzimidazol-2-vHmethoxyl isoquinoline
The title compound was prepared from Intermediate 19 and 7-hydroxy- isoquinoline in accordance with Method D. LCMS (ES+) 394 (M+H)+.
EXAMPLE 30 l-(2,5-Dimethylbenzyl)-2-{r(2-methylpyridin-3-yl)oxy1methyl|-lH-benzimidazole
The title compound was prepared from Intermediate 19 and 2-methylpyridin-3-ol in accordance with Method D. LCMS (ES+) 358 (M+H)+.
EXAMPLE 31
2-( {[ 1 -(2,5-Dimethylbenzyl)- lH-benzimidazol-2-yl]methyl| sulfanyDbenzothiazole
To a stirred solution of 2-mercaptobenzothiazole (0.12 g, 0.7 mmol) in DMF (6 mL) was added potassium carbonate (0.19 g, 1.40 mmol) followed by Intermediate 19 (0.20 g, 0.7 mmol) and the reaction mixture was stirred for 3-4 h at r.t. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate (10 mL). The organic layer was washed with water (10 mL), dried over anhydrous sodium sulphate and concentrated in vacuo. The residue was purified by preparative HPLC, yielding the title compound. LCMS (ES+) 416 (M+H)+.
EXAMPLE 32
4- { Γ 1 -(2,5-DimethylbenzvD- lH-benzimidazol-2-vHmethyl| -N V-dimethylaniline
2- [4-(Dimethylamino)phenyl] acetic acid (0.18 mg, 1.0 mmol) was added to a stirred solution of Intermediate 6 (0.20 g, 0.88 mmol) in DCM (6 mL), EDC (0.19 g, 0.97 mmol) and triethylamine (0.37 mL, 2.65 mmol) at 0°C, and stirred at r.t. for 18 h. The reaction was diluted with water (60 mL) and extracted with ethyl acetate (3 x 10 mL).
The organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by preparative HPLC, yielding the title compound. LCMS (ES+) 370 (M+H)+.
EXAMPLES 33 TO 35
The following compounds were synthesised from Intermediate 21 and the appropriate boronic acid in accordance with Method F.
Figure imgf000174_0001
EXAMPLES 36 TO 39
The following compounds were synthesised from Intermediate 23 and the appropriate boronic acid in accordance with Method F. Example No. Compound Name LCMS
1 - {4-[ 1 -(1 -Phenylethyl)-2-(pyridin-4-ylmethyl)- LCMS (ES+) 432
36
lH-benzimidazol-6-yl]phenyl}ethanone (M+H)+.
5-[ 1 -(1 -Phenylethyl)-2-(pyridin-4-ylmethyl)-lH- LCMS (ES+) 406
37
benzimidazol-6-yl]pyridin-2-amine (M+H)+.
N,N-Dimethyl-5-[ 1 -(1 -phenylethyl)-2-(pyridin-4- LCMS (ES+) 434
38
ylmethyl)-lH-benzimidazol-6-yl]pyridin-2-amine (M+H)+.
4-[ 1 -(1 -Phenylethyl)-2-(pyridin-4-ylmethyl)- 1H- LCMS (ES+) 433
39
benzimidazol-6-yl]benzamide (M+H)+.
EXAMPLE 40
[ 1 -(2,5-Dimethylphenylamino)- lH-benzimidazol-2-yll(pyridin-4-yl)methanol
The title compound was prepared from Intermediate 24 and isonicotinaldehyde in accordance wit Method C. δΗ (d6-DMSO) 8.84 (s, 1H), 8.48-8.42 (m, 2H), 7.70-7.66 (m, 1H), 7.40-7.35 (m, 2H), 7.27-7.17 (m, 2H), 7.14-7.08 (m, 1H), 7.01 (d, J 7.6 Hz, 1H), 7.58-7.53 (m, 1H), 6.44 (d, J 6.0 Hz, 1H), 5.97 (d, J6.0 Hz, 1H), 5.51 (s, 1H), 2.32 (s, 3H), 1.91 (s, 1H). LCMS (ES+) 345 (M+H)+.
EXAMPLE 41 l-(2,5-Dimethylbenzyl)-2-ri-(pyridin-4-yl)ethyl1-lH-benzimidazole
Intermediate 25 (0.34 g, 1.91 mmol) was dissolved in THF (5 mL), and a solution of lithium hydroxide (0.09 g, 2.10 mmol) in water (5 mL) was added. The resulting solution was stirred at r.t. for 18 h and then concentrated in vacuo to afford the crude carboxylate salt. This material was then added to a solution of Intermediate 6 (0.47 g, 2.11 mmol) and HATU (0.88 g, 2.30 mmol) in DMF (20 mL). The reaction mixture was warmed to 50°C and stirred for 1 h. The reaction mixture was concentrated in vacuo and the residue was dissolved in glacial acetic acid (20 mL) and heated at 90°C for a further 3 h. The reaction mixture was concentrated in vacuo and the remaining oil was partitioned between DCM (50 mL) and aqueous NaHC03 solution (50 mL). The organic layer was separated and dried with sodium sulphate, and the resulting solution was concentrated in vacuo to afford a clear oil. The residue was purified by column chromatography (Si02, 5% MeOH/DCM), yielding the title compound (0.08 g, 12%) as a clear oil. δΗ (d6- DMSO) 8.35-8.32 (m, 2H), 7.73 (dd, J7.0, 1.1 Hz, IH), 7.30-7.26 (m, IH), 7.24-7.12 (m, 4H), 7.06-7.00 (m, IH), 6.88-6.83 (m, IH), 5.68 (s, IH), 5.46 (d, J 17.5 Hz, IH), 5.30 (d, J 17.5 Hz, 1H), 4.48 (q, J 6.9 Hz, IH), 2.28 (s, 3H), 1.84 (s, 3H), 1.67 (d, J 6.9 Hz, 3H). LCMS (ES+) 342 (M+H)+.
EXAMPLE 42
1 - r2-Methyl-5 -(trifluoromethyl)benzyll -2- r(pyridin-4-ylmethoxy)methvH - \H- benzimidazole
The title compound was prepared from Intermediate 26 and 4-(bromomethyl)- pyridine hydrobromide in accordance wit Method D. LCMS (ES ) 412 (M+H)+.
EXAMPLE 43
4-Chloro-3-((2-[(pyridin-4-ylmethoxy)m
The title compound was prepared from Intermediate 28 and 4-(bromomethyl)- pyridine hydrobromide in accordance wit Method D. LCMS (ES ) 379 (M+H)+. EXAMPLE 44
[l-(2,5-Dimethylbenzyl)-6-(l -methyl- lH-pyrazol-4-yl)-lH-benzimidazol-2-yll(pyridin-4- vDmethanol
The title compound was prepared from Intermediate 30 and l-methyl-4-(4,4,5,5- tetramethyl-[l,3,2]dioxaborolan-2-yl)-lH-pyrazole in accordance with Method F. 5R (d6- DMSO) 8.39 (dd, J4.5, 1.6 Hz, 2H), 8.03 (s, IH), 7.76 (s, IH), 7.64 (d, J 8.8 Hz, IH), 7.44-7.41 (m, 2H), 7.28 (d, J 5.6 Hz, 2H), 7.06 (d, J7.7 Hz, IH), 6.87 (d, J 6.8 Hz, IH), 6.70 (d, J5.5 Hz, IH), 6.01 (d, J 5.5 Hz, IH), 5.83 (s, IH), 5.63-5.43 (m, 2H), 3.82 (s, 3H), 2.33 (s, 3H), 1.92 (s, 3H). LCMS (ES+) 424 (M+H)+. EXAMPLE 45
Γ 1 -(2.5-Dimethylbenzyl)-6- ( 1 - r2-(morpholin-4-yl)ethvn - lH-pyrazol-4-yl} - 1H- benzimidazol-2-yll(pyridin-4-yl)methanol
The title compound was prepared from Intermediate 30 and 4-{2-[4-(4,4,5,5- tetramethyl-[ 1 ,3,2]dioxaborolan-2-yl)- IH-pyrazol- 1 -yl]ethyl}morpholine in accordance with Method F. δΗ (d6-DMSO) 8.40 (dd, J 4.5, 1.6 Hz, 2H), 8.08 (s, IH), 7.77 (s, IH), 7.64 (d, J 8.9 Hz, IH), 7.43 (m, 2H), 7.28 (d, J 5.8 Hz, 2H), 7.06 (d, J7.7 Hz, IH), 6.87 (d, J7.5 Hz, IH), 6.70 (d, J 5.5 Hz, IH), 6.02 (d, J 5.5 Hz, IH), 5.84 (s, IH), 5.63-5.43 (m, 2H), 4.20 (t, J 6.6 Hz, 2H), 3.53 (t, J 4.6 Hz, 4H), 2.70 (t, J 6.4 Hz, 2H), 2.39 (t, J 4.6 Hz, 4H), 2.34 (s, 3H), 1.92 (s, 3H). LCMS (ES+) 523 (M+H)+.
EXAMPLE 46 (METHOD I) 1 -(2,5 -Dimethylbenzyl)-2- [(methylsulfanyl)methyl] - 1 H-benzimidazole
2-(Methylsulfanyl)acetic acid (0.11 g, 1.06 mmol) was added to a stirred solution of Intermediate 6 (0.20 g, 0.88 mmol) in DCM (6 mL), EDC (0.19 g, 0.97 mmol) and triethylamine (0.37 mL, 2.65 mmol) at 0°C and stirred at r.t. for 18 h. The reaction mixture was diluted with water (60 mL) and extracted with ethyl acetate (3 x 10 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo to give a crude product that was purified by preparative HPLC, yielding the title compound. LCMS (ES+) 297 (M+H)+.
EXAMPLE 47 l-(2,5-Dimethylbenzyl)-2-[2-(lH-imidazol-4-yl)ethyll-lH-benzimidazole
The title compound was prepared from Intermediate 6 and 3-(lH-imidazol-4- yl)propanoic acid in accordance wit Method I. LCMS (ES ) 331 (M+H)+. EXAMPLE 48 l-(2,5-Dimethylbenzyl)-2-[(fluoro)(pyridin-4-yl)methyll-lH-benzimidazole
To a solution of Example 2 (0.15 g, 0.44 mmol) in chloroform (10 mL) was added DAST (0.11 mL, 0.88 mmol). The mixture was heated to 50°C for 30 minutes, and then the reaction mixture was poured into a 2M aqueous solution of NaOH (15 mL)/DCM. The organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-30% EtOAc/ DCM), yielding the title compound (0.05 g, 33%) as a white solid. δΗ (CDC13) 8.55 (d, J 5.8 Hz, 2H), 7.90 (d, J 7.9 Hz, 1H), 7.38-7.25 (m, 4H), 7.16 (d, J 8.0 Hz, 1H), 7.06 (d, J 8.0 Hz, 1H), 6.95 (d, J7.6 Hz, 1H), 6.87 (d, JHF 46 Hz, 1H), 6.07 (s, 1H), 5.33 (dd, JAB 17.0 Hz, 2H), 2.30 (s, 3H), 2.03 (s, 3H). LCMS (ES+) 346 (M+H)+.
EXAMPLE 49 l-(2,5-Dimethylbenzyl)-2-(phenylsulfinyl)-lH-benzimidazole
To a solution of Intermediate 31 (0.20 g, 0.58 mmol) in DCM (10 mL) at 0°C was added mCPBA (0.210 g, 1.2 mmol). The reaction mixture was stirred for 1 h at 0°C. The reaction mixture was then quenched with saturated aqueous sodium thiosulfate solution (10 mL) and allowed to warm to ambient temperature. The reaction mixture was poured into DCM/saturated aqueous sodium carbonate solution. The organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-20% EtOAc/DCM), yielding the title compound (0.20 g, 96%) as a white solid. δΗ (d6-DMSO) 7.92 (d, J 8.2 Hz, 1H), 7.60- 7.57 (m, 2H), 7.37-7.24 (m, 5H), 7.04 (t, J 8.5 Hz, 2H), 6.86 (d, J 7.7 Hz, 1H), 5.70 (d, JAB 16.9 Hz, 2H), 5.65 (s, 1H), 2.33 (s, 3H), 1.86 (s, 3H). LCMS (ES+) 361 (M+H)+.
EXAMPLE 50 l-(2,5-Dimethylbenzyl)-2-(phenylsulfonyl)-lH-benzimidazole
To a solution of Example 49 (0.10 g, 0.28 mmol) in DCM (10 mL) at 0°C was added mCPBA (0.50 g, 2.8 mmol). The reaction mixture was stirred for 1 h at 0°C. The reaction mixture was then quenched with saturated aqueous sodium thiosulfate solution (10 mL) and allowed to warm to ambient temperature. The reaction mixture was poured into DCM/saturated aqueous sodium carbonate solution. The organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-20% EtOAc/DCM), yielding the title compound (0.04 g, 38%) as a white solid. δΗ (CDC13) 7.98-7.96 (m, 1H), 7.83 (d, J 8.2 Hz, 2H), 7.54-7.51 (m, 1H), 7.40-7.33 (m, 4H), 7.21-7.19 (m, 1H), 7.12 (d, J 7.7 Hz, 1H), 6.92 (d, J7.6 Hz, 1H), 5.81 (s, 2H), 5.72 (s, 1H), 2.44 (s, 3H), 1.85 (s, 3H). LCMS (ES+) 377 (M+H)+. EXAMPLE 51
Methyl 3-(l-(2,5-dimethylbenzyl)-2-[(hydroxy)(pyridin-4-yl)methyll-lH-benzimidazol- 6-yl|propanoate
To a solution of 5-bromobenzimidazole (10.0 g, 50.8 mmol) in DMF (60 mL) were added 2,5-dimethylbenzyl chloride (7.9 g, 50.8 mmol) and potassium carbonate
(14.0 g, 102.0 mmol). The mixture was stirred at r.t. for 18 h. Water (50 mL) was added and the mixture was poured into ethyl acetate/water. The organic layer was separated, dried (MgS04) and concentrated in vacuo and the residue was purified by column chromatography (Si02, 0-20% EtOAc/DCM), yielding a pale brown solid (6.7 g, 42%). To a solution of the resulting material (2.0 g, 6.3 mmol) in THF (20 mL) at -78°C was added freshly prepared LDA (0.9M in THF, 14.0 mL, 12.6 mmol) over 1 minute. The reaction mixture was stirred for 1 h and then a solution of isonicotinaldehyde (1.35 g, 12.6 mmol) in THF (2 mL) was added over 1 minute. After a further 10 minutes the reaction was quenched with water (1 mL) and allowed to warm to r.t. The reaction mixture was poured into ethyl acetate/water; and the organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-20%> MeOH/DCM), yielding a pale brown solid (1.9 g, 70%). To a solution of the resulting material (0.20 g, 0.48 mmol) in DMF (5 mL) were added methyl acrylate (0.08 mL, 0.96 mmol), Pd(OAc)2 (0.006 g, 0.024 mmol),
P(o-tolyl)3 (0.020 g, 0.048 mmol) and triethylamine (4 mL). The mixture was degassed under nitrogen and heated under reflux for 1 h. The reaction mixture was poured into ethyl acetate/water, and the organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-20% EtOAc/DCM), yielding a yellow oil. The resulting material was dissolved in EtOH/EtOAc (10 mL/5 mL) and Pd/C (Degussa, 5 wt %, -300 mg) was added. The suspension was degassed and stirred under a H2 atmosphere (balloon) at r.t. for 18 h. The mixture was filtered on celite and the filtrate concentrated under vacuo. The residue was purified by preparative HPLC, yielding the title compound. δΗ (CDC13) 8.28 (d, J4.5 Hz, 2H), 7.59 (d, J 8.3 Hz, IH), 7.12 (d, J6.0 Hz, 2H), 7.05 (dd, J 8.3, 1.4 Hz, IH), 6.93 (d, J 7.7 Hz, IH), 6.79-6.82 (m, 2H), 5.94 (s, IH), 5.78 (s, IH), 5.09 (dd, JAB 17.2 Hz, 2H), 3.51 (s, 3H), 2.91 (t, J 7.6 Hz, 2H), 2.51 (t, J7.6 Hz, 2H), 2.16 (s, 3H), 1.86 (s, 3H). LCMS (ES+) 430 (M+H)+.
EXAMPLE 52
Methyl 3-(l-(2,5-dimethylbenzyl)-2-r(hvdroxy)(pyridin-4-yl)methyl1-lH-benzimidazol- 5-yl|propanoate
The title compound was obtained as a separated regioisomer from the reaction described in Example 51. δΗ (CDC13) 8.31 (d, J4.5 Hz, 2H), 7.49 (s, IH), 7.13 (d, J5.9 Hz, 2H), 6.81-6.99 (m, 4H), 5.94 (s, IH), 5.85 (s, IH), 5.10 (dd, JAB 17.1 Hz, 2H), 3.60 (s, 3H), 2.99 (t, J 7.6 Hz, 2H), 2.60 (t, J7.6 Hz, 2H), 2.15 (s, 3H), 1.87 (s, 3H). LCMS (ES+) 430 (M+H)+.
EXAMPLE 53
Γ 1 -(2,5-Dimethylbenzyl)-6-(lH-pyrazol-4-yl)- lH-benzimidazol-2-vH(pyridin-4- vDmethanol
The title compound was prepared from Intermediate 30 and lH-pyrazol-4- ylboronic acid in accordance with Method F. δΗ (d6-DMSO) 12.85 (s, NH, IH), 8.40 (dd, J4.5, 1.5 Hz, 2H), 8.10 (s, IH), 7.82 (s, IH), 7.64 (d, J 8.8 Hz, IH), 7.47-7.49 (m, 2H), 7.28 (d, J5.8 Hz, IH), 7.16 (d, J 8.0 Hz, IH), 7.07 (d, J7.7 Hz, IH), 6.85 (m, IH), 6.70 (d, J5.5 Hz, IH), 6.01 (d, J 5.4 Hz, IH), 5.85 (s, IH), 5.54 (dd, JAB 36.0 Hz, 2H), 2.34 (s, 3H), 1.92 (s, 3H). LCMS (ES+) 410 (M+H)+. EXAMPLE 54
(l-(2,5-Dimethylbenzyl)-6-[6-(piperazin-l-yl)pyridin-3-yll-lH-benzimidazol-2- yl| (pyridin-4-yl)methanol
The title compound was prepared from Intermediate 30 and l-[5-(4,4,5,5- tetramethyl-[l,3,2]dioxaborolan-2-yl)pyridin-2-yl]piperazine in accordance with Method F. δΗ (CDC13) 8.30 (dd, J 1.5, 4.6 Hz, 2H), 8.23 (d, J 2.4 Hz, IH), 7.70 (d, J 8.4 Hz, IH), 7.48 (dd, J2.6, 8.8 Hz, IH), 7.35 (dd, J 1.6, 8.4 Hz, IH), 7.19-7.16 (m, 2H), 6.96 (s, IH), 6.91 (d, J7.7 Hz, IH), 6.80-6.78 (m, IH), 6.53 (d, J 8.9 Hz, IH), 6.03 (s, IH), 5.82 (s, IH), 5.15 (d, JAB 17.1 Hz, 2H), 3.44-3.40 (m, 4H), 2.90-2.88 (m, 4H), 2.17 (s, 3H), 1.84 (s, 3H). LCMS (ES+) 505 (M+H)+.
EXAMPLE 55 (l-(2,5-Dimethylbenzyl)-5-[4-(piperazin-l-yl)phenyll-lH-benzimidazol-2-yl|(pyridin-4- yPmethanol
To a solution of 5-bromobenzimidazole (10.0 g, 50.8 mmol) in DMF (60 mL) were added 2,5-dimethylbenzyl chloride (7.9 g, 50.8 mmol) and potassium carbonate (14.0 g, 102.0 mmol). The mixture was stirred at r.t. for 18 h. Water (50 mL) was added and the mixture was poured into ethyl acetate/water. The organic layer was separated, dried (MgS04) and concentrated in vacuo and the residue was purified by column chromatography (Si02, 0-20% EtOAc/DCM), yielding a pale brown solid (6.7 g, 42%). To a solution of the resulting material (2.0 g, 6.3 mmol) in THF (20 mL) at -78°C was added freshly prepared LDA (0.9M in THF, 14 mL, 12.6 mmol) over 1 minute. The reaction mixture was stirred for 1 h and then a solution of isonicotinaldehyde (1.35 g, 12.6 mmol) in THF (2 mL) was added over 1 minute. After a further 10 minutes the reaction was quenched with water (1 mL) and allowed to warm to r.t. The reaction mixture was poured into ethyl acetate/water, and the organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-20%> MeOH/DCM), yielding a pale brown solid (1.87 g, 70%). To a solution of the resulting material (0.20 g, 0.47 mmol) in 1,4-dioxane (5 mL) were added 4-[4-(tert-butoxycarbonyl)piperazinyl]phenylboronic acid pinacol ester (0.36 g, 0.95 mmol) and Pd(PPh3)4 (0.03 g, 0.026 mmol), followed by a 2M aqueous solution of Na2C03 (2 mL). The mixture was degassed under nitrogen and heated under reflux for 2 h. The reaction mixture was poured into ethyl acetate/water. The organic layer was separated, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (Si02, 0-60% EtOAc/DCM). The resulting solid was dissolved in DCM (5 mL) and a 4N solution of HC1 in 1,4-dioxane (1 mL) was added. The mixture was stirred at r.t. for 2 h, then concentrated in vacuo. The residue was purified by preparative HPLC, yielding the title compound (0.04 g, 15%) as an off- white solid. δΗ (dg-DMSO) 8.41 (dd, J4.6, 1.5 Hz, 2H), 7.85 (s, IH), 7.56-7.53 (m, 2H), 7.43 (d, J 8.3 Hz, IH), 7.32 (d, J 5.4 Hz, 2H), 7.20 (d, J 8.7 Hz, IH), 7.06 (d, J 7.7 Hz, IH), 6.96 (d, J 8.9 Hz, IH), 6.87 (d, J 7.6 Hz, IH), 6.75 (d, J 5.0 Hz, IH), 6.11 (d, J4.3 Hz, IH), 5.90 (s, IH), 5.51 (dd, JAB 11.6 Hz, 2H), 3.08-3.03 (m, 4H), 2.86-2.84 (m, 4H), 2.31 (s, 3H), 1.92 (s, 3H). LCMS (ES+) 504 (M+H)+.
EXAMPLES 56 TO 106 (METHOD J)
The appropriate carboxylic acid (2 equivalents) is added to a solution of HATU (2 equivalents) in DMF (2 mL). The mixture is stirred for 30 minutes. Where HC1 salts are utilised, DIPEA (3 equivalents) is added. A solution of the appropriate Intermediate (1 equivalent) in DMF (2 mL) is added and the mixture is stirred at room temperature for 24 h. The temperature is then raised to 50°C and stirring is continued for 24 h. The solvent is evaporated and the residue dissolved in acetic acid (4 mL) and heated to 80°C for 5 h. The acetic acid is removed by evaporation. The residue is partitioned between water/ chloroform (1 : 1, 6 mL) at 50°C. The layers are separated by using a phase separator. The aqueous layer is washed with chloroform (4 mL) and the organic layer is evaporated to dryness. The residue is taken up in DMSO (1 mL) and purified by preparative LCMS to yield the desired product.
The following compounds were synthesized from Intermediate 35 and the appropriate carboxylic acid in accordance with the foregoing procedure.
Example Compound Name QC RT Mass Ion
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[(difluoromethoxy)- 1.33 448
56
methyl] - lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
57 5-( { 1 -[2-(Difluoromethoxy)benzyl]-6-(6-oxo-l ,6-dihydro- 1.36 514 pyridin-3 -yl)- lH-benzimidazol-2-yl } methoxy)-3 -methyl - pyridine-2-carbonitrile
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(2-methoxypropan- 1.38 440 2-yl)-lH-benzimidazol-6-yl}pyridin-2(lH)-one
5-{2-[(Cyclohexyloxy)methyl]-l -[2-(difluoromethoxy)- 1.51 481 benzyl] - lH-benzimidazol-6-yl }pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[(propan-2-yloxy)- 1.39 440 methyl] - lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[(tetrahydrofuran-3 - 1.29 482 ylmethoxy)methyl] - lH-benzimidazol-6-yl } pyridin-2( 1 H)- one
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[(2S)-5-oxo- 1.17 465 pyrrolidin-2-yl]methyl} - lH-benzimidazol-6-yl)pyridin- 2(lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(2-methoxyethyl)- 1.28 426 lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5- {2-[(Cyclopentyloxy)methyl] - 1 -[2-(difluoromethoxy)- 1.46 466 benzyl] - lH-benzimidazol-6-yl }pyridin-2( 1 H)-one
5-{l -[2-(Difluoromethoxy)benzyl]-2-[(3,5-dimethyl- 1.31 477 isoxazol-4-yl)methyl] - lH-benzimidazol-6-yl } pyridin- 2(lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(pyrazin-2-yl- 1.21 460 methyl)- lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[(5-methylisoxazol- 1.34 479
3-yl)oxy]methyl}-lH-benzimidazol-6-yl)pyridin-2(lH)- one
N-[5-( { 1 -[2-(Difluoromethoxy)benzyl] -6-(6-oxo- 1 ,6- 1.24 533 dihydropyridin-3-yl)-lH-benzimidazol-2-yl}methoxy)- pyridin-2-yl]acetamide
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [(2 -methyl- 1,3- 1.32 480 thiazol-4-yl)methyl]-lH-benzimidazol-6-yl}pyridin- 2(lH)-one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -(ethoxymethyl) - 1 H- 1.32 426 benzimidazol-6-yl }pyridin-2( 1 H)-one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -(morpholin-4 -yl- 1.27 467 methyl)- lH-benzimidazol-6-yl } pyridin-2( 1 H)-one 5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(piperidin- 1 -yl- 1.48 466 methyl)- lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [( 1 S) - 1 -methoxy- 1.30 426 ethyl] - lH-benzimidazol-6-yl } pyridin-2( lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(tetrahydro-2H- 1.29 466 pyran-4-ylmethyl)-lH-benzimidazol-6-yl}pyridin-2(lH)- one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [( 1 R) - 1 -methoxy- 1.30 426 ethyl] - lH-benzimidazol-6-yl } pyridin-2( lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(l -methoxypropyl)- 1.36 440 lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [(2 -methoxy- 1.26 456 ethoxy)methyl] - lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5- {2-(fert-Butoxymethyl)- 1 -[2-(difluoromethoxy)benzyl] - 1.43 454 lH43enzimidazol-6-yl } pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(tetrahydrofuran-2- 1.33 438 yl)- lH43enzimidazol-6-yl } pyridin-2( lH)-one
5-{l -[2-(Difluoromethoxy)benzyl]-2-(tetrahydrofuran-3- 1.25 438 yl)- lH43enzimidazol-6-yl } pyridin-2( lH)-one
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[5-(pyridin-4-yl)- 1.25 527 2H-tetrazol-2-yl]methyl} - lH43enzimidazol-6-yl)pyridin- 2(lH)-one
N-(2- { 1 -[2-(Difluoromethoxy)benzyl] -6-(6-oxo-l ,6- 1.24 505 dihydropyridin-3-yl)-lH43enzimidazol-2-yl}ethyl)furan-
3-carboxamide
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[4-(trifluoro- 1.55 558 methoxy)phenoxy]methyl}-lH43enzimidazol-6-yl)- pyridin-2(lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(l -hydroxypropyl)- 1.24 426 lH43enzimidazol-6-yl } pyridin-2( 1 H)-one
5-( 1 - [2-(Difluoromethoxy)benzyl] -2- { [4-( lH-tetrazol- 1 - 1.30 543 yl)phenoxy]methyl} - lH43enzimidazol-6-yl)pyridin- 2(lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[(2-methylpropoxy)- 1.45 454 methyl] - lH4)enzimidazol-6-yl } pyridin-2( 1 H)-one
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[5-(morpholin-4- 1.25 536 yl)-2H-tetrazol-2-yl]methyl}-lH-benzimidazol-6-yl)- pyridin-2( 1 H)-one
5- {2-[(Cyclopropylmethoxy)methyl] - 1 -[2-(difluoro- 1.38 452 methoxy)benzyl]-lH-benzimidazol-6-yl}pyridin-2(lH)- one
5 -( 1 - [2 -(Difluoromethoxy)benzyl] -2- { [3 - (2 -oxo - 1.34 558 pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazol-6-yl)- pyridin-2(lH)-one
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[3-(methyl- 1.30 553 sulfonyl)phenoxy] methyl} - lH-benzimidazol-6-yl)pyridin- 2(lH)-one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -(trifluoro- 1.53 542 methoxy)benzyl]-lH-benzimidazol-6-yl}pyridin-2(lH)- one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methylsulfonyl)- 1.26 537 benzyl] - lH-benzimidazol-6-yl }pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[3 -(methylsulfonyl)- 1.27 537 benzyl] - lH-benzimidazol-6-yl }pyridin-2( 1 H)-one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -(difluoro- 1.44 524 methoxy)benzyl]-lH-benzimidazol-6-yl}pyridin-2(lH)- one
5-{l -[2-(Difluoromethoxy)benzyl]-2-[4-(2-methyl-l,3- 1.46 556 thiazol-4-yl)benzyl]-lH-benzimidazol-6-yl}pyridin-
2(lH)-one
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[(4-oxo- 1.26 495 cyclohexyl)oxy]methyl} -lH-benzimidazol-6-yl)pyridin-
2(lH)-one
5-{l -[2-(Difluoromethoxy)benzyl]-2-[(5,7-dimethyl- 1.20 529 [ 1 ,2,4]triazolo [ 1 ,5-a]pyrimidin-2-yl)methyl] - 1H- benzimidazol-6-yl}pyridin-2(lH)-one
5-( { 1 -[2-(Difluoromethoxy)benzyl]-6-(6-oxo-l ,6-dihydro- 1.18 536 pyridin-3 -yl)- lH-benzimidazol-2-yl } methoxy)-3 -fluoro- pyridine-2-carboxamide
5- (l -[2-(Difluoromethoxy)benzyl]-2- {2-[(4-oxo-4,5- 1.14 51 1 dihydro-l,3-thiazol-2-yl)amino]ethyl}-lH-benzimidazol-
6- yl)pyridin-2(lH)-one Example Compound Name LCMS RT Mass Ion
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[(methyl- 1.31 428
100 sulfanyl)methyl]-lH-benzimidazol-6-yl}pyridin-
2(lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(trifluoro- 1.42 436
101
methyl)- lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(hydroxy- 1.14 398
102
methyl)- lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(2,2,2-trifluoro- 1.28 466
103 1 -hy droxy ethyl)- lH-benzimidazol-6-yl } pyridin- 2(lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(pyridin-4-yl- 1.21 459
104
methyl)- lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(difluoro- 1.33 418
105
methyl)- lH-benzimidazol-6-yl } pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2 -propyl- 1H- 1.35 410
106
benzimidazol-6-yl }pyridin-2( 1 H)-one
EXAMPLES 107 AND 108
The following compounds were synthesized from Intermediate 38 and the appropriate carboxylic acid in accordance with Method J.
Example Compound Name LCMS RT Mass Ion
5- { 1 -[(5-Chloro-2-methyl- 1 ,3 -thiazol-4-yl)methyl]- 1.18 448
107 2-(pyridin-4-ylmethyl)-lH-benzimidazol-6-yl}- pyridin-2( 1 H)-one
5- { 1 -[(5-Chloro-2-methyl- 1 ,3 -thiazol-4-yl)methyl]- 1.21 401
108 2-(methoxymethyl)-lH-benzimidazol-6-yl}pyridin- 2(lH)-one EXAMPLES 109 TO 112
These compounds can be synthesized by a sequence of steps corresponding to preparation of Intermediates 33, 34 and 35, followed by Method J, utilising the appropriate amine and carboxylic acid. The following compounds were prepared.
Figure imgf000187_0001
EXAMPLES 113 TO 221
These compounds can be synthesized from Intermediate 40, 42, 44 or 46 and the appropriate carboxylic acid in accordance with Method J. The following compounds were prepared.
Example Compound Name LCMS RT Mass Ion
N-[3 -( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H- 1.40 500
1 13 benzimidazol-2-yl}methoxy)phenyl]methane- sulfonamide
N-[3 -( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H- 1.45 463
1 14
benzimidazol-2-yl } methoxy)phenyl] acetamide
l-(2,5-Dichlorobenzyl)-2-[(difluoromethoxy)- 1.57 383
1 15
methyl]-lH-benzimidazole-6-carbonitrile
1 16 1 -[2-(Difluoromethoxy)benzyl] -2-[(3,5-dimethyl- 1 Η- 1.37 408 pyrazol-4-yl)methyl]-lH-benzimidazole-6- carbonitrile
N-[5-( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H- 1.40 464 benzimidazol-2-yl } methoxy)pyridin-2-yl] acetamide
1 -[2-(Difluoromethoxy)benzyl] -2-[(tetrahydrofuran- 1.46 414 3-ylmethoxy)methyl] - lH-benzimidazole-6- carbonitrile
l-(2,5-Dichlorobenzyl)-2-[(2-methyl-lH- 1.38 447 benzimidazol-5-yl)methyl]-lH-benzimidazole-6- carbonitrile
2-{[6-Cyano-l-(2,5-dichlorobenzyl)-lH- 1.34 390 benzimidazol-2-yl]methoxy} acetamide
1 - [2 -(Difluoromethoxy)benzyl] -2 - [(difluoro - 1.50 380 methoxy)methyl]-lH-benzimidazole-6-carbonitrile
2-[(Cyclopentyloxy)methyl]-l-(2,5-dichlorobenzyl)- 1.76 401 lH-benzimidazole-6-carbonitrile
2- { [3 -(3 -Amino-2-oxopyrrolidin- 1 -yl)phenoxy] - 1.41 505 methyl} - 1 -[2-(difluoromethoxy)benzyl] - 1H- benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [3 -(2-oxo- 1.49 489 pyrrolidin- 1 -yl)phenyl] amino } methyl) - 1 H- benzimidazole-6-carbonitrile
Methyl 4-( {6-cyano-l -[2-(difluoromethoxy)benzyl]- 1.43 465 lH-benzimidazol-2-yl}methoxy)pyridine-2- carboxylate
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(2-oxo- 1.49 490 pyrrolidin- 1 -yl)pyridin-4-yl] oxy }methyl) - 1H- benzimidazole-6-carbonitrile
2- { [(2-Chloropyridin-4-yl)oxy]methyl} - 1 -[2- 1.53 442
(difluoromethoxy)benzyl]-lH-benzimidazole-6- carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2- { [3 -(2-formyl-l ,3 - 2.71 518 thiazol-4-yl)phenoxy]methyl} -lH-benzimidazole-6- carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(2-oxo- 1.42 491 imidazolidin- 1 -yl)pyridin-4-yl] oxy } methyl)- 1H- benzimidazole-6-carbonitrile
l-[2-(Difluoromethoxy)benzyl]-2-{[3-(2,5-dioxo- 1.48 503 pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazole-
6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(2-oxo- 1 ,3 - 1.47 492 oxazolidin-3-yl)pyridin-4-yl]oxy}methyl)-lH- benzimidazole-6-carbonitrile
2-[4-(2 -Methyl- 1 ,3 -thiazol-4-yl)benzyl] - 1 - [( 1 S)- 1 - 1.64 436 phenylethyl]-lH-benzimidazole-6-carbonitrile
N-(5-{[6-Cyano-l -(2,5-dichlorobenzyl)-lH- 1.43 467 benzimidazol-2-yl]methoxy}pyridine-2-yl)acetamide
2- { [(6-Cyano-5-methylpyridin-3 -yl)oxy]methyl} - 1 - 1.57 449
(2,5-dichlorobenzyl)-lH-benzimidazole-6- carbonitrile
1 -[( 1R)- 1 -Phenylethyl] -2- { [2-(pyridin-3 -yl)- 1,3- 1.47 423 thiazol-4-yl]methyl} - lH-benzimidazole-6- carbonitrile
2- {[(6-Oxo-l ,6-dihydropyridin-3-yl)oxy]methyl} -1 - 1.28 371
[(lS)-l -phenylethyl]-lH-benzimidazole-6- carbonitrile
2- [(Difluoromethoxy) methyl] -1 -[( IS) - 1 -phenyl- 1.49 328 ethyl]-lH-benzimidazole-6-carbonitrile
2-[(Cyclopentyloxy)methyl] - 1 - [( 1 S)- 1 -phenylethyl] - 1.68 346 lH-benzimidazole-6-carbonitrile
5-( {6-Cyano- 1 -[( IS)- 1 -phenylethyl] -1 H- 1.33 416 benzimidazol-2-yl}methoxy)-3-fluoropyridine-2- carboxamide
1 -[2-(Difluoromethoxy)benzyl] -2- { [5-(morpholin-4- 1.43 467 yl)-2H-tetrazol-2-yl]methyl}-lH-benzimidazole-6- carbonitrile
2-{[3-(2-Oxopyrrolidin-l -yl)phenoxy] methyl} -1 - 1.52 438 [( 1 R) - 1 -phenylethyl] - 1 H-benzimidazole-6 - carbonitrile
2-[(2-Methylpropoxy)methyl] -1 -[( IS)- 1 -phenyl- 1.65 334 ethyl]-lH-benzimidazole-6-carbonitrile
2- { [(6-Cyano-5-methylpyridin-3 -yl)oxy]methyl} - 1 - 1.51 446 [2-(difluoromethoxy)benzyl]-lH-benzimidazole-6- carbonitrile
l-[(lS)-l -Phenylethyl]-2-[(propan-2-yloxy)methyl]- 1.54 320
144
lH-benzimidazole-6-carbonitrile
2-[(5,7-Dimethyl[l,2,4]triazolo[l,5-fl]pyrimidin-2- 1.36 408
145 yl)methyl]-l -[(\S)-\ -phenylethyl] -1H- benzimidazole-6-carbonitrile
l-[(lS)-l -Phenylethyl]-2-[4-(trifluoromethoxy)- 1.71 422
146
benzyl]-lH-benzimidazole-6-carbonitrile
2-[(2-Methoxyethoxy)methyl] -1 -[( IS)- 1 -phenyl- 1.41 336
147
ethyl]-lH-benzimidazole-6-carbonitrile
2-{[(5-Methylisoxazol-3-yl)oxy]methyl} -1 -[(1S)-1 - 1.49 359
148
phenylethyl]-lH-benzimidazole-6-carbonitrile
1 -[( 1S)-1 -Phenylethyl] -2- { [2-(pyridin-3-yl)- 1 ,3 - 1.47 423
149 thiazol-4-yl]methyl} - lH-benzimidazole-6- carbonitrile
2-[(2-Methyl- 1 ,3 -thiazol-4-yl)methyl] - 1 -[( IS)- 1 - 1.48 359
150
phenylethyl]-lH-benzimidazole-6-carbonitrile
2-[(3 ,5 -Dimethylisoxazol-4-yl)methyl] - 1 - [( 1 S)- 1 - 1.46 357
151
phenylethyl]-lH-benzimidazole-6-carbonitrile
2-(Ethoxymethyl)- 1 - [( 1 S) - 1 -phenylethyl] - 1 H- 1.51 306
152
benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2- {[(6-oxo-l, 6-dihydro- 1.32 426
153 pyridin-3 -yl)oxy]methyl} - lH-benzimidazole-6- carbonitrile
2- { [2-(2-Oxoimidazolidin- 1 -yl)- 1 ,3 -thiazol-4-yl] - 1.36 430
154 methyl} -1-[(1S)-1 -phenylethyl] - lH-benzimidazole- 6-carbonitrile
2- { [3 -(Methylsulfonyl)phenoxy]methyl} - 1 - [( 1 S)- 1 - 1.48 433
155
phenylethyl]-lH-benzimidazole-6-carbonitrile
2-{[3-(2-Oxopyrrolidin-l -yl)phenoxy]methyl} -1 - 1.52 438
156 [(lS)-l -phenylethyl]-lH-benzimidazole-6- carbonitrile
2-(2-Methoxyethyl)- 1 - [( 1 S)- 1 -phenylethyl] - 1H- 1.41 306
157
benzimidazole-6-carbonitrile
158 2-[(3,5-Dimethyl-lH-pyrazol-4-yl)methyl]-l -[(1S)-1 - 1.35 356 phenylethyl]-lH-benzimidazole-6-carbonitrile
2-{[5-(Morpholin-4-yl)-2H-tetrazol-2-yl]methyl} -l - 1.43 415
159 [(lS)-l -phenylethyl]-lH-benzimidazole-6- carbonitrile
2-[(lR)-l -Methoxyethyl]-l -[(1S)-1 -phenylethyl]-lH- 1.48 306
160
benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-(pyridin-4-ylmethyl)-lH- 2.02 394
161
benzimidazole-6-carbonitrile
1 -(1 -Phenylethyl)-2-(pyridin-4-ylmethyl)-lH- 1.89 339
162
benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-(4,5,6,7-tetrahydro-lH- 1.47 437
163
indazol-5-ylmethyl)-lH-benzimidazole-6-carbonitrile
5-(l - {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H- 1.39 464
164
benzimidazol-2-yl}ethoxy)pyridine-2-carboxamide
2-[(3-Bromophenoxy)methyl]-l -[2-(difluoro- 1.70 485
165
methoxy)benzyl] - lH-benzimidazole-6-carbonitrile
1 - { [6-Cyano- 1 -(2,5-dichlorobenzyl)-lH- 2.85 442
166
benzimidazol-2-yl]methyl}piperidine-4-carboxamide
1 -[2-(Difluoromethoxy)benzyl] -2 -[(2 -methyl- 1,3- 3.02 41 1
167 thiazol-4-yl)methyl]-lH-benzimidazole-6- carbonitrile
l-(2,5-Dichlorobenzyl)-2-[(propan-2-yloxy)methyl]- 3.47 374
168
lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-[(2-methyl-l,3-thiazol-4- 3.12 413
169
yl)methyl]-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2- { [3 -(methyl- 3.05 484
170 sulfonyl)phenoxy] methyl} - lH-benzimidazole-6- carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 - { [3 - (2 -oxo - 3.10 489
171 pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazole-
6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-[(tetrahydrofuran-3-yl- 3.16 416
172
methoxy)methyl]-lH-benzimidazole-6-carbonitrile
l-(4- {[6-Cyano-l -(2,5-dichlorobenzyl)-lH- 2.88 450
173
benzimidazol-2-yl]methyl}phenyl)urea
174 l-(2,5-Dichlorobenzyl)-2-[4-(2-methyl-l,3-thiazol-4- 3.54 489 yl)benzyl]-lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-(ethoxymethyl)-lH- 3.33 361 benzimidazole-6-carbonitrile
1 -(2,5 -Dichlorobenzyl)-2- { [2-(pyridin-3 -yl)- 1,3- 3.14 477 thiazol-4-yl]methyl} - lH-benzimidazole-6- carbonitrile
1 - [4 -( { 6 -Cyano - 1 - [2 -(difluoromethoxy)benzyl] - 1 H- 2.78 448 benzimidazol-2-yl}methyl)phenyl]urea
1 - [2 -(Difluoromethoxy)benzyl] -2 - { [2 -(2 -oxo - 2.80 481 imidazolidin-1 -yl)- 1 ,3 -thiazol-4-yl]methyl} - 1H- benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-(pyrazin-2-ylmethyl)-lH- 2.94 394 benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2- { [2-(pyridin-3 -yl)- 3.01 474 1 ,3-thiazol-4-yl]methyl} -lH-benzimidazole-6- carbonitrile
l-(2,5-Dichlorobenzyl)-2-[4-(difluoromethoxy)- 3.52 458 benzyl]-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2 -[(2 -methyl- 1H- 2.82 444 benzimidazol-5-yl)methyl]-lH-benzimidazole-6- carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -(2 -methyl- 1,3- 3.41 488 thiazol-4-yl)benzyl]-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-[(2-methyl- 3.42 386 propoxy)methyl]-lH-benzimidazole-6-carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -( 1 H-tetrazol- 1 - 3.00 458 yl)benzyl]-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-[4-(trifluoro- 3.58 474 methoxy)benzyl] - lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl- 2.96 468 sulfonyl)benzyl]-lH-benzimidazole-6-carbonitrile
2- [(Cyclopropylmethoxy)methyl] - 1 - [2 -(difluoro - 3.24 384 methoxy)benzyl] - lH-benzimidazole-6-carbonitrile
2-[(Cyclopropylmethoxy)methyl]-l-(2,5-dichloro- 3.49 386 benzyl)-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2- { [(5-methyl- 3.13 41 1 isoxazol-3-yl)oxy]methyl}-lH-benzimidazole-6- carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2 -[(2 -methyl- 1H- 2.73 394 imidazol-l-yl)methyl]-lH-benzimidazole-6- carbonitrile
l-(2,5-Dichlorobenzyl)-2- {[2-(2-oxoimidazolidin-l - 2.89 483 yl)-l ,3 -thiazol-4-yl]methyl} - lH-benzimidazole-6- carbonitrile
l-(2,5-Dichlorobenzyl)-2-[(2-methyl-lH-imidazol-l - 2.86 396 yl)methyl]-lH-benzimidazole-6-carbonitrile
2-[(Cyclohexyloxy)methyl]-l-[2-(difluoromethoxy)- 3.55 412 benzyl]-lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-[(2-methoxyethoxy)- 3.15 390 methyl]-lH-benzimidazole-6-carbonitrile
2-[(2-Amino- 1 ,3 -benzothiazol-6-yl)methyl] -1 -(2,5- 2.99 464 dichlorobenzyl)-lH-benzimidazole-6-carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -(difluoro- 3.36 456 methoxy)benzyl] - lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-(ethoxymethyl)- 3.09 358 lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-[(2-methylpropoxy)- 3.69 388 methyl]-lH-benzimidazole-6-carbonitrile
2-[(Cyclopentyloxy)methyl]-l-[2-(difluoromethoxy)- 3.45 398 benzyl]-lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2- {[(2-oxo-l,2,3,4- 1.46 478 tetrahydroquinolin-6-yl)oxy]methyl} - 1H- benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2- {[(5-methylisoxazol-3-yl)- 1.57 414 oxy]methyl} - lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2- {[4-(trifluoromethoxy)- 1.79 493 phenoxy]methyl} - lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2-[4-(trifluoromethoxy)- 1.76 477 benzyl]-lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2- {[3-(methylsulfonyl)- 1.52 487 phenoxy]methyl} - lH-benzimidazole-6-carbonitrile
l-(2,5-Dichlorobenzyl)-2- {[3-(2-oxopyrrolidin-l-yl)- 1.56 492 phenoxy]methyl} - lH-benzimidazole-6-carbonitrile
2-[(Cyclohexyloxy)methyl]-l-(2,5-dichlorobenzyl)- 1.81 415
207
lH-benzimidazole-6-carbonitrile
5-( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] -\H- 1.84 465
208 benzimidazol-2-yl}methoxy)pyridine-2- carbohydrazide
l-(2,5-Dichlorobenzyl)-2-[l-(pyridin-3-yloxy)ethyl]- 1.51 424
209
lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [3 -(2-oxo- 1.53 506
210 pyrrolidin- 1 -yl)phenyl] sulfanyl } methyl) - 1 H- benzimidazole-6-carbonitrile
l-[2-(Difluoromethoxy)benzyl]-2-({3-[(3S)-3- 1.42 505
21 1 hydroxy-2-oxopyrrolidin-l-yl]phenoxy}methyl)-lH- benzimidazole-6-carbonitrile
5-{[6-Cyano-l-(2,5-dichlorobenzyl)-lH- 1.44 453
212
benzimidazol-2-yl]methoxy}pyridine-2-carboxamide
1 -(2,5 -Dichlorobenzyl)-2-(methoxymethyl)- 1 H- 1.49 347
213
benzimidazole-6-carbonitrile
214 - - -
1 - [2 -(Difluoromethoxy)benzyl] -2 - [(pyridin-3 -yloxy) - 1.39 407
215
methyl]-lH-benzimidazole-6-carbonitrile
5-( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H- 1.33 450
216
benzimidazol-2-yl}methoxy)pyridine-2-carboxamide
l-(2,5-Dichlorobenzyl)-2-(2-methoxyethyl)-lH- 3.77 360
217
benzimidazole-6-carbonitrile
2-[(2-Amino- 1 ,3 -thiazol-4-yl)methyl] -1 -(2,5- 3.53 414
218
dichlorobenzyl)-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( {3 -[(45)-4- 1.40 505
219 hydroxy-2-oxopyrrolidin-l-yl]phenoxy}methyl)-lH- benzimidazole-6-carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 - { [3 -(2 -oxo - 1 ,3 - 1.50 491
220 oxazolidin-3 -yl)phenoxy]methyl} - 1H- benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( {3 -[(4R)-4- 1.39 505
221 hydroxy-2-oxopyrrolidin-l-yl]phenoxy}methyl)-lH- benzimidazole-6-carbonitrile EXAMPLE 165: ALTERNATIVE PREPARATION
2-[(3-Bromophenoxy)methyl"|- 1 -[2-(difluoromethoxy)benzyl"|- lH-benzimidazole-6- carbonitrile
A solution of Intermediate 52 (2.5 g, 7.2 mmol) in DMF (50 mL) was treated with K2CO3 (2.7 g, 14.4 mmol) and 3-bromophenol (2.5 g, 14.4 mmol) and stirred at room temperature for 72 h. After this time, the reaction mixture was concentrated in vacuo and the residue was partitioned between DCM and water. The aqueous phase was extracted with further DCM and the combined organic fractions were washed with 10% sodium hydroxide solution. After drying (phase separator), the organic layer was evaporated in vacuo and the residue was purified by column chromatography (Si02, 0-50% EtOAc in DCM) to give the title compound (2.7 g, 77%) as a waxy solid. δΗ (300 MHz, DMSO) 8.15 (d, lH, J0.9 Hz), 7.89 (d, 1H, J 8.4 Hz), 7.65 (dd, 1H, J 8.4, 1.5 Hz ), 7.19 (m, 7H), 6.84 (m, 1H), 6.65 (dd, 1H, J 7.6, 1.2 Hz), 5.67 (s, 2H), 5.46 (s, 2H). LCMS (ES+) 485 (M+H)+, RT 3.00 minutes.
EXAMPLE 210: ALTERNATIVE PREPARATION 1 - r2-(Difluoromethoxy)benzyl1 -2-( { Γ3 -(2-oxopyrrolidin- 1 -vDphenyll sulfanyl I methyl)- lH-benzimidazole-6-carbonitrile
Prepared in accordance with Method P to give the title compound (67 mg, 33 >) as a white powder. δΗ (400 MHz, DMSO) 8.00 (d, 1H, J 0.9 Hz), 7.79 (d, 1H, J 8.4 Hz), 7.57 (m, 3H), 7.29 (m, 6H), 6.75 (m, 1H), 5.65 (s, 2H), 4.56 (s, 2H), 3.76 (t, 2H, J 7.0 Hz), 2.47 (m, 2H), 2.04 (m, 2H). LCMS (ES+) 505 (M+H)+, RT 2.30 minutes.
EXAMPLE 211: ALTERNATIVE PREPARATION (METHOD P) l-r(2-Difluoromethoxy)benzyl1-2-({3-r(36 -3-hvdroxy-2-oxopyrrolidin-l-yl1phenoxy|- methyl)- lH-benzimidazole-6-carbonitrile
A mixture of Example 165 (100 mg, 0.21 mmol), Cul (8 mg, 0.042 mmol), trans- N,N'-dimethylcyclohexane-l,2-diamine (6 mg, 0.042 mmol), K2CO3 (55 mg, 0.42 mmol) and (35)-3-hydroxy-2-pyrrolidinone (35 mg, 0.35 mmol) in 1,4-dioxane (2 mL) was heated in under microwave irradiation, with stirring, for 2 h at 140°C. After this time, the reaction mixture was partitioned between EtOAc and H20. The organic phase was dried by passing through a phase separator cartridge, and evaporated in vacuo. The residue was purified by column chromatography (Si02, 20-100% EtOAc in hexane) to give the title compound (42 mg, 40%) as a white powder. δΗ (300 MHz, DMSO) 8.14 (d, IH, J0.9 Hz), 7.89 (m, IH), 7.65 (dd, 1H, J 8.4, 1.5 Hz), 7.25 (m, 7H), 6.71 (m, 2H), 5.77 (d, 1H, J 5.8 Hz), 5.69 (s, 2H), 5.43 (s, 2H), 4.28 (m, IH), 3.64 (m, 2H), 1.81 (dd, 1H, J 12.5, 9.2 Hz). LCMS (ES+) 505 (M+H)+, RT 2.10 minutes. EXAMPLE 219: ALTERNATIVE PREPARATION l-[2-(Difluoromethoxy)benzyll-2-({3-[(46 -4-hydroxy-2-oxopyrrolidin-l-yllphenoxy|- methvD-lH-benzimidazole-6-carbonitrile
Prepared in accordance with Method P to give the title compound (75 mg, 48%>) as a white powder. δΗ (400 MHz, DMSO) 8.13 (d, IH, J 0.9 Hz), 7.90 (d, IH, J 8.4 Hz), 7.65 (dd, 1H, J 8.4, 1.5 Hz), 7.38 (m, IH), 7.25 (m, 4H), 7.10 (m, 2H), 6.74 (dd, 1H, J 7.5, 1.1 Hz), 6.68 (m, IH), 5.69 (s, 2H), 5.43 (s, 2H), 5.33 (d, 1H, J3.6 Hz), 4.38 (m, IH), 3.97 (dd, IH, J 10.6, 5.2 Hz), 3.52 (d, IH, J 10.4 Hz), 2.82 (dd, IH, J 17.0, 6.2 Hz), 2.30 (dd, IH, J 17.0, 1.7 Hz). LCMS (ES+) 505 (M+H)+, RT 2.00 minutes.
EXAMPLE 220: ALTERNATIVE PREPARATION l-r2-(Difluoromethoxy)benzyl1-2- {r3-(2-oxo-l,3-oxazolidin-3-yl)phenoxy1methyl|-lH- benzimidazole-6-carbonitrile
Prepared in accordance with Method P to give the title compound as a white powder. δΗ (300 MHz, DMSO) 8.14 (d, IH, J0.9 Hz), 7.89 (d, IH, J 8.4 Hz), 7.65 (dd, 1H, J 8.4, 1.5 Hz), 7.33 (m, 5H), 7.08 (td, 1H, J 7.6, 1.0 Hz), 6.99 (m, IH), 6.69 (m, 2H), 5.69 (s, 2H), 5.44 (s, 2H), 4.42 (m, 2H), 3.97 (m, 2H). LCMS (ES+) 491.6 (M+H)+, RT 2.26 minutes (pH 10). EXAMPLE 221: ALTERNATIVE PREPARATION l-[2-(Difluoromethoxy)benzyll-2-({3-[(4i?)-4-hydroxy-2-oxopyrrolidin-l-yllphe methyl)- lH-benzimidazole-5-carbonitrile
Prepared in accordance with Method P to give the title compound (60 mg, 38%) as a white powder. δΗ (300 MHz, DMSO) 8.13 (d, IH, J 0.9 Hz), 7.89 (dd, IH, J 8.4, 0.3 Hz), 7.64 (dd, IH, J 8.4, 1.5 Hz), 7.41 (m, IH), 7.24 (m, 4H), 7.10 (m, 2H), 6.70 (m, 2H), 5.69 (s, 2H), 5.43 (s, 2H), 5.33 (d, IH, J 3.7 Hz), 4.37 (m, IH), 3.96 (dd, IH, J 10.6, 5.2 Hz), 3.51 (dd, IH, J 10.5, 0.6 Hz), 2.81 (dd, IH, J 17.0, 6.1 Hz), 2.29 (dd, 1H, J 16.8, 1.9 Hz). LCMS (ES+) 505 (M+H)+, RT 2.00 minutes.
EXAMPLES 222 TO 241
These compounds can be synthesized by a sequence of steps corresponding to the preparation of Intermediates 33 and 34, followed by Method J, utilising the appropriate amine and carboxylic acid. The following compounds were prepared.
Example Compound Name QC RT Mass Ion
1 -[2-(Difluoromethoxy)benzyl] -2-[(difluoromethoxy)- 1.59 462
222
methyl] -6 -(6 -methoxypyridin-3 -yl) - 1 H-benzimidazole
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-6-(6- 1.48 463
223 memoxypyridin-3-yl)-2-(pyridin-4-ylmethyl)-lH- benzimidazole
1 -[3 -(Difluoromethoxy)benzyl] -2-(methoxymethyl)-6-(6- 1.54 426
224
methoxypyridin-3 -yl)- lH-benzimidazole
1 -[2-Chloro-6-(difluoromethoxy)benzyl] -2-(methoxy- 1.59 461
225
methyl) -6 -(6 -methoxypyridin-3 -yl) - 1 H-benzimidazole
l-(2,6-Difluorobenzyl)-2-(memoxymethyl)-6-(6- 1.52 396
226
methoxypyridin-3 -yl)- lH-benzimidazole
l-[(5-Chloro-2-memyl-l,3-miazol-4-yl)methyl]-2- 1.54 416
227 (methoxymethyl)-6-(6-methoxypyridin-3-yl)-lH- benzimidazole
l-[5-Chloro-2-(difluoromemoxy)benzyl]-6-(6-methoxy- 1.55 508
228
pyridin-3-yl)-2-(pyridin-4-ylmethyl)-lH-benzimidazole l-(2,6-Dichlorobenzyl)-2-(methoxymethyl)-6-(6- 1.62 429
229
methoxypyridin-3 -yl)- lH-benzimidazole
l-[2-Fluoro-5-(trifluoromethoxy)benzyl]-2-(methoxy- 1.63 462
230
methyl) -6 -(6 -methoxypyridin-3 -yl) - 1 H-benzimidazole
l-(5-Chloro-2-fluorobenzyl)-2-(methoxymethyl)-6-(6- 1.59 413
231
methoxypyridin-3 -yl)- lH-benzimidazole
2-(Methoxymethyl) -6 -(6 -methoxypyridin-3 -yl) - 1 - [2 - 1.64 428
232
(trifluoromethyl)benzyl]-lH-benzimidazole
l-[5-Chloro-2-(trifluoromethyl)benzyl]-2-(methoxy- 1.69 463
233
methyl) -6 -(6 -methoxypyridin-3 -yl) - 1 H-benzimidazole
l-[2,5-Bis(trifluoromethyl)benzyl]-2-(methoxymethyl)-6- 1.69 496
234
(6-methoxypyridin-3 -yl)- 1 H-benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)-6-(6- 1.55 426
235
methoxypyridin-3 -yl)- lH-benzimidazole
l-[5-Chloro-2-(difluoromethoxy)benzyl]-2-[(difluoro- 1.64 496
236 methoxy)methyl]-6-(6-methoxypyridin-3-yl)-lH- benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -6 -(6 -methoxypyridin-3 - 1.71 450
237
yl)-2-(trifluoromethyl)-lH-benzimidazole
{ 1 -[2-(Difluoromethoxy)benzyl] -6 -(6 -methoxypyridin-3 - 1.45 412
238
yl)- lH-benzimidazol-2-yl } methanol
1 - [2 -(Difluoromethoxy)benzyl] -6 -(6 -methoxypyridin-3 - 1.50 473
239
yl)-2-(pyridine-4-ylmethyl)-lH-benzimidazole
l-[5-Chloro-2-(difluoromethoxy)benzyl]-2-(methoxy- 1.61 460
240
methyl) -6 -(6 -methoxypyridin-3 -yl) - 1 H-benzimidazole
2-(Methoxymethyl) -6 -(6 -methoxypyridin-3 -yl) - 1 - [2 - 1.66 444
241
(trifluoromethoxy)benzyl]-lH-benzimidazole
EXAMPLES 242 TO 280
These compounds can be synthesized by a sequence of steps corresponding to the preparation of Intermediates 32, 33 and 34, followed by Method J, utilising pyridin-4-yl- boronic acid, the appropriate amine and the appropriate carboxylic acid. The following compounds were prepared. Example Compound Name QC RT Mass Ion
[l-(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 1.84 385
242
benzimidazol-2-yl]methanol
1 -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-2-[l -(pyridin-4- 2.03 460
243
yl)ethyl]-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-2-(pyridin-4-yl- 1.99 446
244
methyl)-lH-benzimidazole
l-(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-2-(pyridin-4-yl- 1.95 406
245
methyl)-lH-benzimidazole
1 -(2,5-Dichlorobenzyl)-2- { [(6-methoxypyridin-3 -yl)oxy] - 2.44 492
246
methyl} -6-(pyridin-4-yl)-lH-benzimidazole
5-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 1.29 506
247
benzimidazol-2-yl]methoxy}pyridine-2-carboxylic acid
2-{[(5-Chloropyridin-2-yl)oxy]methyl}-l-(2,5-dichloro- 2.74 497
248
benzyl)-6-(pyridin-4-yl)-lH-benzimidazole
5-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 2.31 487
249
benzimidazol-2-yl]methoxy}pyridine-2-carbonitrile
5-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 1.38 505
250
benzimidazol-2-yl]methoxy}pyridine-2-carboxamide
l-(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-2-[2-(pyridin-3- 2.08 460
251
yl)ethyl]-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-2- {[(6-fluoropyridin-3-yl)oxy]- 2.30 480
252
methyl}-6-(pyridin-4-yl)-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-2-(methoxymethyl)-6-(pyridin-4- 1.54 399
253
yl)-lH-benzimidazole
4-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 2.21 532
254
benzimidazol-2-yl]methoxy} -N,N-dimethylbenzamide
4-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 1.46 505
255
benzimidazol-2-yl]methoxy}benzoic acid
l-(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-2-{[4-(2H- 1.56 529
256
tetrazol-5-yl)phenoxy]methyl}-lH-benzimidazole
5-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 2.13 519
257 benzimidazol-2-yl]methoxy} -N-methylpyridine-2- carboxamide
l-(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-2-[(pyridin-3-yl- 2.16 462
258
oxy)methyl]-lH-benzimidazole 5-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 2.06 533
259 benzimidazol-2-yl]methoxy} -N,N-dimethylpyridine-2- carboxamide
4-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 2.14 518
260
benzimidazol-2-yl]methoxy} -N-methylbenzamide
4-{[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 1.38 504
261
benzimidazol-2-yl]methoxy}benzamide
(4- {[1 -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 2.16 574
262 benzimidazol-2-yl]methoxy}phenyl)(morpholin-4-yl)- methanone
l-(2,5-Dimethylbenzyl)-2-(methoxymethyl)-6-(pyridin-4- 1.41 358
263
yl)-lH-benzimidazole
l-[(lR)-l -Phenylethyl]-6-(pyridin-4-yl)-2-(pyridin-4-yl- 1.88 391
264
methyl)-lH-benzimidazole
l-[(lS)-l -Phenylethyl]-6-(pyridin-4-yl)-2-(pyridin-4-yl- 1.87 391
265
methyl)-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-2-(pyrimidin-4- 1.91 447
266
ylmethyl)- lH-benzimidazole
2-Cyclopropyl-l-(2,5-dichlorobenzyl)-6-(pyridin-4-yl)- 2.39 395
267
lH-benzimidazole
l-(2,5-Dichlorobenzyl)-2-[(2-methoxypyridin-4-yl)- 2.26 476
268
methyl] -6-(pyridin-4-yl)- lH-benzimidazole
3-{[l -(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-lH- 1.59 446
269
benzimidazol-2-yl]methoxy}benzonitrile
4-{[l -(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-lH- 1.44 465
270
benzimidazol-2-yl]methoxy}benzoic acid
2-(4- {[1 -(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-lH- 1.39 478
271
benzimidazol-2-yl]methoxy}phenyl)acetamide
l-(2,6-Dimethylbenzyl)-2- {[4-(lH-imidazol-l-yl)- 1.48 487
272
phenoxy]methyl}-6-(pyridin-4-yl)-lH4oenzimidazole
1 -(2,6-Dimethylbenzyl)-2- { [(6-methylpyridin-3 -yl)oxy] - 1.48 436
273
methyl} -6-(pyridin-4-yl)-lH-benzimidazole
4-{[l -(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-lH- 1.58 446
274
benzimidazol-2-yl]methoxy}benzonitrile
5-{[l -(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-lH- 1.63 492
275
benzimidazol-2-yl]methoxy} -2 -methyl- 1 ,3 -benzothiazole 7-{[l -(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-lH- 1.54 472
276
benzimidazol-2-yl]methoxy}isoquinoline
7-{[l -(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-lH- 1.56 472
277
benzimidazol-2-yl]methoxy}quinoline
1 -(2,6-Dimethylbenzyl)-2- { [(2-methylpyridin-3 -yl)oxy] - 1.46 436
278
methyl} -6-(pyridin-4-yl)-lH4oenzimidazole
l-(2,6-Dimethylbenzyl)-2- {[(l-oxidopyridin-3-yl)oxy]- 1.28 438
279
methyl}-6-(pyridin-4-yl)-lH4oenzimidazole
4-{2-[l -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH- 2.16 502
280
benzimidazol-2-yl]ethyl}benzamide
EXAMPLE 253: ALTERNATIVE PREPARATION l-(2,5-Dichlorobenzyl)-2-(methoxymethyl)-6-(pyridin-4-yl)-lH-benzimidazole
Intermediate 56 (150 mg, 0.43 mmol) was dissolved in 2 -methoxy acetic acid (1 mL) and heated at 100°C for 5 h. The reaction was quenched by the addition of aqueous NaHCC"3 solution (25 mL) and the organic material was extracted into DCM (25 mL). The organic layer was separated and dried, and the solvent was removed under vacuum to afford a pale oil. Purification by preparative scale reverse phase HPLC afforded the title compound (40 mg, 34%) as a white solid. δΗ (DMSO, 300 MHz) 8.61 (d, 2H, J 5.8 Hz), 8.03 (d, 1H, J 1.2 Hz), 7.84 (m, 1H), 7.73 (m, 3H), 7.60 (d, 1H, J 8.6 Hz), 7.41 (dd, 1H, J 8.6, 2.5 Hz), 6.52 (d, 1H, J 2.5 Hz), 5.72 (s, 2H), 4.68 (s, 2H), 3.23 (s, 3H). LCMS (ES+) 398.0 (M+H)+, RT 2.28 minutes (pH 10). EXAMPLES 281 TO 319
These compounds can be synthesized by a sequence of steps corresponding to the preparation of Intermediates 32, 33 and 34, followed by Method J, utilising 1-methyl-lH- pyrazole-4-boronic acid, the appropriate amine and the appropriate carboxylic acid. The following compounds were prepared.
Example Compound Name QC RT Mass Ion
l-(2,5-Dicmorobenzyl)-6-(l-methyl-lH-pyrazol-4- 2.07 479
281
yl)-2- { [(2-methylpyridin-3 -yl)oxy]methyl} - 1H- benzimidazole
7-{[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol- 2.51 475
282
4-yl)-lH-benzimidazol-2-yl]methoxy}quinoline
3-(4- {[1 -(2,5-Dimethylbenzyl)-6-(l -methyl- 1H- 2.42 508
283 pyrazol-4-yl)-lH-benzimidazol-2-yl]methyl}- piperazin-1 -yl)phenol
l-(2,5-Dimethylbenzyl)-2- {[4-(lH-imidazol-l-yl)- 2.31 490
284 phenoxy] methyl} -6-(l -methyl-lH-pyrazol-4-yl)-lH- benzimidazole
2-(2,3-Dihydro-lH-indol-l-ylmethyl)-l-(2,5- 2.91 449
285 dimethylbenzyl)-6-(l -methyl-lH-pyrazol-4-yl)-lH- benzimidazole
7-{[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol- 2.46 475
286
4-yl)- lH-benzimidazol-2-yl]methoxy} isoquinoline
5-{[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol- 2.69 495
287 4-yl)- lH-benzimidazol-2-yl]methoxy} -2-methyl-l ,3 - benzothiazole
2-[5-({[l-(2,5-Dimethylbenzyl)-6-(l -methyl-lH- 2.19 503
288 pyrazol-4-yl)-lH-benzimidazol-2-yl]methyl}- sulfanyl)-lH-tetrazol-l-yl]-N,N-dimethylethanamine
2-( { [1 -(2,5-Dimethylbenzyl)-6-(l -methyl-lH- 2.70 481
289 pyrazol-4-yl)-lH-benzimidazol-2-yl]methyl}- sulfanyl)- 1 ,3 -benzoxazole
l-(2,5-Dimethylbenzyl)-2- {[(l-methyl-lH- 2.43 494
290 benzimidazol-2-yl)sulfanyl]methyl} -6-(l -methyl-lH- pyrazol-4-yl)-lH-benzimidazole
2-( { [1 -(2,5-Dimethylbenzyl)-6-(l -methyl-lH- 2.80 497
291 pyrazol-4-yl)-lH-benzimidazol-2-yl]methyl}- sulfanyl)- 1 ,3 benzothiazole
6-{[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol- 2.23 475
292
4-yl)-lH-benzimidazol-2-yl]methoxy}quinoline
(35)-l - {[1 -(2,5-Dimethylbenzyl)-6-(l -methyl-lH- 2.1 1 444
293 pyrazol-4-yl)-lH-benzimidazol-2-yl]methyl}-N,N- dimethylpyrrolidin-3 -amine
2- { [3 -(4,5-Dihydro- lH-imidazol-2-yl)phenoxy] - 2.13 492
294
methyl} - 1 -(2,5-dimethylbenzyl)-6-(l -methyl- 1H- pyrazol-4-yl)-lH-benzimidazole
2- [(B enzylsulfanyl)methyl] - 1 -(2, 5 -dimethylbenzyl) - 2.70 454 6-(l -methyl-lH-pyrazol-4-yl)-lH-benzimidazole
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 - 2.13 442 yl)-2 - [(pyrimidin-2 -ylsulfanyl)methyl] - 1 H- benzimidazole
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 - 2.03 425 yl)-2-[(pyridin-3-yloxy)methyl]-lH-benzimidazole
4-{[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol- 1.58 468 4-yl)-lH-benzimidazol-2-yl]methoxy}benzoic acid
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 - 2.15 455 yl)-2- { [(pyridin-4-ylmethyl)sulfanyl]methyl} - 1H- benzimidazole
4-{[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol- 1.93 467 4-yl)-lH-benzimidazol-2-yl]methoxy}benzamide
l-[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol- 2.13 452
4-yl)-lH-benzimidazol-2-yl]-N-methyl-N-(pyridin-3- ylmethyl)methanamine
l-(2,5-Dimethylbenzyl)-2- {[(4-methoxybenzyl)- 2.66 484 sulfanyl]methyl}-6-(l -methyl-lH-pyrazol-4-yl)-lH- benzimidazole
4-{[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol- 2.39 449 4-yl)-lH-benzimidazol-2-yl]methoxy}benzonitrile
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 - 2.12 439 yl)-2- { [(6-methylpyridin-3 -yl)oxy]methyl} - 1H- benzimidazole
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 - 2.37 441 yl)-2-[(pyridin-2-ylsulfanyl)methyl]-lH- benzimidazole
l-(2,5-Dichlorobenzyl)-6-(l-methyl-lH-pyrazol-4- 1.91 449 yl)-2-(pyridin-4-ylmethyl)-lH-benzimidazole
4- { [1 -(2-Chlorobenzyl)-6-( 1 -methyl- lH-pyrazol-4- 1.94 473 yl)-lH-benzimidazol-2-yl]methoxy}benzamide
2-{[(6-Methoxypyridin-3-yl)oxy]methyl}-6-(l - 1.94 448 methyl-lH-pyrazol-4-yl)-l -[(2-methyl-l,3-thiazol-4- yl)methyl]-lH-benzimidazole 4-{[l -(2,5-Dichlorobenzyl)-6-(l -methyl-lH-pyrazol- 2.02 507
309
4-yl)-lH-benzimidazol-2-yl]methoxy}benzamide
1 -(2,5-Dimethylbenzyl)-2-(methoxymethyl)-6-(l - 1.43 361
310
methyl-lH-pyrazol-4-yl)-lH-benzimidazole
l-(2-Chlorobenzyl)-2- {[(6-methoxypyridin-3-yl)- 1.50 461
31 1 oxy]methyl} -6-(l -methyl-lH-pyrazol-4-yl)-lH- benzimidazole
1 -(2-Chloro-5-fluorobenzyl)-6-(l -methyl-lH- 1.38 449
312 pyrazol-4-yl)-2-[(pyridin-3-yloxy)methyl]-lH- benzimidazole
1 -(2 -Chloro -5 -fluorobenzyl) -2 - { [(6 -methoxypyridin- 2.30 479
313 3-yl)oxy]methyl} -6-(l -methyl-lH-pyrazol-4-yl)-lH- benzimidazole
4-{[l -(2-Chloro-5-fluorobenzyl)-6-(l -methyl-lH- 1.98 491
314 pyrazol-4-yl)-lH-benzimidazol-2-yl]methoxy} - benzamide
4-({6-(l -Methyl-lH-pyrazol-4-yl)-l -[(2-methyl-l,3- 1.60 460
315 tmazol-4-yl)methyl]-lH-benzimidazol-2-yl}- methoxy)benzamide
6-(l -Methyl-lH-pyrazol-4-yl)-l-[(2-methyl-l,3- 1.68 417
316 thiazol-4-yl)methyl]-2-[(pyridin-3-yloxy)methyl]- lH-benzimidazole
l-(2,5-Dichlorobenzyl)-2-[(difluoromethoxy)- 1.50 438
317 methyl] -6-( 1 -methyl- lH-pyrazol-4-yl)- 1 H- benzimidazole
1 -(2-Chlorobenzyl)-6-(l -methyl-lH-pyrazol-4-yl)-2- 2.04 431
318
[(pyridin-3-yloxy)methyl]-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-6-(l-methyl-lH-pyrazol-4- 2.13 465
319
yl)-2-[(pyridin-3-yloxy)methyl]-lH-benzimidazole
EXAMPLES 320 TO 403
These compounds can be synthesized by a sequence of steps corresponding to preparation of Intermediates 32, 33 and 34, followed by Method J, utilising the appropriate boronic acid, the appropriate amine and the appropriate carboxylic acid. Similarly, the 6-bromo derivatives can be synthesized by a sequence of steps corresponding to the preparation of Intermediates 33 and 34, followed by Method J, utilising the appropriate appropriate amine and the appropriate carboxylic acid. Examples 354 and 355 commence from 2-fluoronitrobenzene. The N-oxide derivatives can be prepared by oxidation with mCPBA. The following compounds were prepared.
Example Compound Name LCMS RT Mass Ion
l-(2,5-Dimemylbenzyl)-6-(lH-indol-6-yl)-2- 2.78 444
320
(pyridin-4-ylmethyl)-lH-benzimidazole
6-[l -(1 -Phenylemyl)-2-(pyridm-4-ylmethyl)-lH- 2.45 442
321
benzimidazol-6-yl]quinoline
1 -(2, 5 -Dimethylbenzyl) -2 -(pyridin-4-ylmethyl) -6 - 2.90 41 1
322
(thiophen-3 -yl)- lH-benzimidazole
6-Bromo-l-(2,5-dimemylbenzyl)-2-[(pyridin-4-yl- 2.55 437
323
memoxy)memyl]-lH-benzimidazole
5-[l -(2,5-Dimemylbenzyl)-2-(pyridm-4-ylmethyl)- 2.38 449
324 lH-benzimidazol-6-yl]-N,N-dimemylpyridin-2- amine
2-{[6-Bromo-l -(l -phenylemyl)-lH-benzimidazol-2- 2.42 474
325
yl]methyl} -4-methylphthalazin-l (2H)-one
1 -(2, 5 -Dimethylbenzyl) -2 -(pyridin-4-ylmethyl) -6 - 1.77 406
326
(pyrimidm-5-yl)-lH-benzimidazole
1 -(1 -Phenylemyl)-6-[4-(lH-pyrazol-5-yl)phenyl]-2- 2.00 457
327
(pyridm-4-ylmemyl)-lH-benzimidazole
1 -(1 -Phenylemyl)-2-(pyridm-4-ylmethyl)-6-[4- 2.41 474
328
(pyrrolidm-l -ylmemyl)phenyl]-lH-benzimidazole
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 , 3 -dimethyl- 1 H-pyrazol- 1.89 423
329
4-yl)-2-(pyridin-4-ylmethyl)-lH-benzimidazole
1 -(2, 5 -Dimethylbenzyl) -2 -(pyridin-4-ylmethyl) -6 - [4 - 1.73 488
330
(pyrrolidin-l -ylmethyl)phenyl]-lH-benzimidazole
1 -(2, 5 -Dimethylbenzyl) -2 -(pyridin-4-ylmethyl) -6 - [3 - 2.49 488
331
(pyrrolidin-l -ylmethyl)phenyl]-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-2- {[(2-methylpyridin-3-yl)- 2.04 579
332 oxy]methyl} -6- { 1 -[2-(morpholin-4-yl)ethyl]- 1H- pyrazol-4-yl}-lH-benzimidazole
333 6-(2-Chlorophenyl)-l-(2,5-dimethylbenzyl)-2- 2.92 439 (pyridin-4-ylmethyl)-lH-benzimidazole
4-[l -(2,5-Dimethylbenzyl)-2-(pyridin-4-ylmethyl)- 2.30 459
334
lH-benzimidazol-6-yl]-2-methyl-2H-indazole
6-(l -Benzofuran-5-yl)-l -(2,5-dimethylbenzyl)-2- 2.86 445
335
(pyridin-4-ylmethyl)-lH-benzimidazole
4-[l -(2,5-Dimethylbenzyl)-2-(pyridin-4-ylmethyl)- 2.51 459
336
lH-benzimidazol-6-yl]-l -methyl-lH-indazole
5 - { [6 -Bromo - 1 -( 1 -phenylethyl)- 1 H-benzimidazol-2 - 3.12 479
337
yljmethoxy } -2-methyl- 1 ,3 -benzothiazole
6-Bromo-2- {[3-(4,5-dihydro-lH-imidazol-2-yl)- 2.91 476
338 phenoxy]methyl } - 1 -( 1 -phenylethyl) - 1 H- benzimidazole
4-{[6-Bromo-l -(l -phenylethyl)-lH-benzimidazol-2- 2.99 433
339
yljmethoxy } benzonitrile
6-Bromo-2- { [(2-methylpyridin-3 -yl)oxy]methyl} - 1 - 2.69 423
340
(l-phenylethyl)-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-6-(2-methylpyridin-4-yl)-2- 2.01 460
341
(pyridin-4-ylmethyl)-lH-benzimidazole
4-[l -(2,5-Dichlorobenzyl)-2-(pyridin-4-ylmethyl)- 1.81 461
342
lH-benzimidazol-6-yl]pyridin-2-amine
l-(2,5-Dichlorobenzyl)-6-(3-methylpyridin-4-yl)-2- 2.04 460
343
(pyridin-4-ylmethyl)-lH-benzimidazole
2-[5-({[6-Bromo-l -(l -phenylethyl)-lH- 2.50 487
344 benzimidazol-2-yl]methyl} sulfanyl)-lH-tetrazol-l - yl] -N,N-dimethylethanamine
l-(2,5-Dichlorobenzyl)-6-(pyridin-3-yl)-2-(pyridin- 1.99 446
345
4-ylmethyl)- lH-benzimidazole
1 -(3 - { [6-Bromo- 1 -(1 -phenylethyl)- lH-benzimidazol- 2.36 466
346 2-yl]methoxy}pyridin-2-yl)-N,N-dimethyl- methanamine
2-(Azocan- 1 -ylmethyl)-6-bromo- 1 -(1 -phenylethyl)- 3.44 427
347
lH-benzimidazole
N- { [6-Bromo- 1 -(1 -phenylethyl)- lH-benzimidazol-2- 2.62 450
348
yl]methyl}-N-(pyridin-4-ylmethyl)ethanamine
6-Bromo- 1 -(1 -phenylethyl)-2- { [(pyridin-4- 2.52 439
349
ylmethyl)sulfanyl]methyl} - lH-benzimidazole 1 -(4- { [6-Bromo- 1 -(1 -phenylethyl)- lH-benzimidazol- 2.38 476 2-yl]methyl}phenyl)imidazolidin-2-one
6-Bromo-2-[(2-ethylpiperidin-l -yl)methyl]-l -(1 - 3.44 427 phenylethyl)-lH-benzimidazole
6-Bromo-l-(l -phenylethyl)-2-[(3-phenylpyrrolidin- 3.31 461 1 -yl)methyl]-lH-benzimidazole
1- (2,5-Dichlorobenzyl)-6-(2,6-dimethylpyridin-4-yl)- 2.15 474
2- (pyridin-4-ylmethyl)-lH-benzimidazole
tert-Butyl 3- {[1 -(2,5-dichlorobenzyl)-lH- 2.81 477 benzimidazol-2-yl]methoxy}pyrrolidine-l- carboxylate
2-{[(2-Chloropyridin-4-yl)methoxy]methyl}-l -(2,5- 2.56 434 dichlorobenzyl)- lH-benzimidazole
l-(2,5-Dichlorobenzyl)-2-(pyridin-4-ylmethyl)-6- 1.90 447 (pyrimidin-4-yl)-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-6-(pyridin-2-yl)-2-(pyridin- 2.19 446 4-ylmethyl)- lH-benzimidazole
4-[l -(2,5-Dichlorobenzyl)-2-(pyridin-4-ylmethyl)- 1.80 462 lH-benzimidazol-6-yl]pyrimidin-2-amine
6-Bromo-l-[l -(2-fluorophenyl)ethyl]-2-[(pyridin-4- 2.43 441 ylmethoxy)methyl]-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-6-(lH-pyrazol-4-yl)-2- 1.79 435 (pyridin-4-ylmethyl)-lH-benzimidazole
4-[l -(2,5-Dichlorobenzyl)-2-(pyridin-4-ylmethyl)- 2.25 471 lH-benzimidazol-6-yl]pyridine-2-carbonitrile
6-Bromo-l-(2,5-dichlorobenzyl)-2-[(pyridin-3-yl- 2.67 464 oxy)methyl]-lH-benzimidazole
4- { 1 -(2,5-Dichlorobenzyl)-2-[(pyridin-3-yloxy)- 2.08 477 methyl] - lH-benzimidazol-6-yl } pyridin-2 -amine
5- { 1 -(2,5-Dichlorobenzyl)-2-[(pyridin-3-yloxy)- 2.64 505 methyl]-lH-benzimidazol-6-yl}-N,N-dimethyl- pyridin-2 -amine
4-( { 1 -(2-Chlorobenzyl)-6-[6-(dimethylamino)- 2.39 513 pyridin-3 -yl] - lH-benzimidazol-2-yl } methoxy)- benzamide
4-{[l -(2-Chlorobenzyl)-6-(l-oxidopyridin-4-yl)-lH- 1.62 486 benzimidazol-2-yl]methoxy}benzamide
4-( { 1 -(2,5-Dichlorobenzyl)-6-[6-(dimethylamino)- 2.50 547
367 pyridin-3 -yl] - lH-benzimidazol-2-yl } methoxy)- benzamide
5-(2- {[(6-Methoxypyridin-3-yl)oxy]methyl} -1 -[(2- 2.38 488
368 methyl-l,3-thiazol-4-yl)methyl]-lH-benzimidazol-6- yl)-N,N-dimethylpyridin-2-amine
6-Bromo-l-[l -(pyridin-4-yl)ethyl]-2-[(pyridin-4-yl- 1.89 424
369
methoxy)methyl]-lH-benzimidazole
4-{[l -(2,5-Dichlorobenzyl)-6-(pyrimidin-4-yl)-lH- 2.01 505
370
benzimidazol-2-yl]methoxy}benzamide
6-Bromo-l-(l -phenylpropyl)-2-[(pyridin-4-yl- 2.59 437
371
methoxy)methyl]-lH-benzimidazole
6-Bromo- 1 - [ 1 -(pyridin-3 -yl)ethyl] -2- [(pyridin-4-yl- 1.91 424
372
methoxy)methyl]-lH-benzimidazole
6-Bromo- 1 - [ 1 -(2-methoxyphenyl)ethyl] -2- [(pyridin- 2.55 453
373
4-ylmethoxy)methyl] - lH-benzimidazole
6-Bromo-l-[l -(4-fluorophenyl)ethyl]-2-[(pyridin-4- 2.52 441
374
ylmethoxy)methyl]-lH-benzimidazole
6-Bromo-l-[l -(3-fluorophenyl)ethyl]-2-[(pyridin-4- 2.48 441
375
ylmethoxy)methyl]-lH-benzimidazole
6-Bromo - 1 - [ 1 -(4 -methylphenyl)ethyl] -2- [(pyridin-4 - 2.68 437
376
ylmethoxy)methyl]-lH-benzimidazole
6-Bromo-l-[2-(difluoromethoxy)benzyl]-2-[(methyl- 1.62 414
377
sulfanyl)methyl]-lH-benzimidazole
6-Bromo-l-[2-(difluoromethoxy)benzyl]-2-propyl- 1.65 396
378
lH-benzimidazole
6-Bromo-l-[2-(difluoromethoxy)benzyl]-2-(pyridin- 1.52 445
379
4-ylmethyl)- lH-benzimidazole
6-Bromo- 1 -[2-(difluoromethoxy)benzyl] -2- 1.61 434
380
[(difluoromethoxy)methyl]-lH-benzimidazole
5-{l -(2-Chloro-5-fluorobenzyl)-2-[(pyridin-3-yl- 1.57 489
381 oxy)methyl]-lH-benzimidazol-6-yl}-N,N-dimethyl- pyridin-2 -amine
l-(2-Chlorobenzyl)-2- {[(6-methoxypyridin-3-yl)- 1.35 474
382
oxy]methyl}-6-(l -oxidopyridin-4-yl)-lH- benzimidazole
4-{[l -(2-Chloro-5-fluorobenzyl)-6-(pyrimidin-4-yl)- 1.33 489
383
lH-benzimidazol-2-yl]methoxy}benzamide
6-Bromo-l-[(5-chloro-2-methyl-l,3-thiazol-4-yl)- 1.80 481
384 methyl] -2- { [(6-methoxypyridin-3 -yl)oxy]methyl} - lH-benzimidazole
[6-Bromo-l -(2,6-dimethylbenzyl)-lH4oenzimidazol- 1.46 346
385
2-yl]methanol
6-Bromo-l-[(lR)-l -phenylethyl]-2-[(pyridin-4-yl- 1.57 423
386
methoxy)methyl]-lH-benzimidazole
6-Bromo - 1 - [( 1 S) - 1 -phenylethyl] -2 - [(pyridin-4-yl- 1.55 423
387
methoxy)methyl]-lH-benzimidazole
5-{[l -(2,5-Dichlorobenzyl)-6-(l -oxidopyridin-4-yl)- 1.19 521
388 lH-benzimidazol-2-yl]methoxy}pyridine-2- carboxamide
4-( { 1 -(2-Chloro-5-fluorobenzyl)-6-[6-(dimethyl- 2.38 531
389 amino)pyridin-3 -yl] - lH-benzimidazol-2-yl } - methoxy)benzamide
5-[l -(2-Chloro-5-fluorobenzyl)-2- {[(6-methoxy- 2.79 519
390 pyridin-3-yl)oxy]methyl}-lH-benzimidazol-6-yl]-
N,N-dimethylpyridin-2-amine
l-(2-Chlorobenzyl)-2-[(pyridin-3-yloxy)methyl]-6- 2.02 429
391
(pyrimidin-4-yl)-lH-benzimidazole
5-[l -(2-Chlorobenzyl)-2- {[(6-methoxypyridin-3-yl)- 2.81 501
392 oxy]methyl}-lH-benzimidazol-6-yl]-N,N-dimethyl- pyridin-2 -amine
1 -(2-Chlorobenzyl)-6-(l -oxidopyridin-4-yl)-2- 1.69 444
393
[(pyridin-3-yloxy)methyl]-lH-benzimidazole
N,N-Dimethyl-5- { 1 -[(2-methyl-l ,3-thiazol-4-yl)- 2.10 458
394 methyl] -2 - [(pyridin-3 -yloxy)methyl] - 1 H- benzimidazol-6-yl}pyridin-2-amine
4-( { 6 - [6 -(Dimethylamino)pyridin-3 -yl] - 1 - [(2 - 2.05 500
395 methyl-l,3-thiazol-4-yl)methyl]-lH-benzimidazol-2- yl } methoxy)benzamide
396 - - - 4-{[l-(2-Chloro-5-fluorobenzyl)-6-(l-oxidopyridin- 1.17 504
397
4-yl)-lH-benzimidazol-2-yl]methoxy}benzamide
l-(2-Chlorobenzyl)-2-{[(6-methoxypyridin-3-yl)- 2.05 459
398
oxy]methyl} -6-(pyrimidin-4-yl)- IH-benzimidazole
l-(2,5-Dichlorobenzyl)-6-(l-oxidopyridin-4-yl)-2- 1.78 478
399
[(pyridin-3-yloxy)methyl]-lH-benzimidazole
4-{[l-(2,5-Dichlorobenzyl)-6-(l-oxidopyridin-4-yl)- 1.73 520
400
lH-benzimidazol-2-yl]methoxy}benzamide
5- { 1 -(2-Chlorobenzyl)-2-[(pyridin-3-yloxy)methyl] - 2.52 471
401 lH-benzimidazol-6-yl}-N,N-dimethylpyridin-2- amine
[6-Bromo- 1 -(2,5 -dimethylbenzyl) - lH-benzimidazol- 1.52 346
402
2-yl]methanol
1 - [2 -(Difluoromethoxy)benzyl] -2 - [(difluoro - 1.47 517
403 methoxy)methyl] -6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - IH-benzimidazole
EXAMPLE 404 (METHOD L)
1 - [2-(Difluoromethoxy)benzyll -6-(6-methoxypyridin-3 -yl)-2-methyl- IH-benzimidazole A mixture of Intermediate 47 (476 mg, 1.30 mmol), 6-methoxypyridin-3-yl- boronic acid (1.56 mmol) and Pd(PPh3)4 (45 mg, 0.039 mmol) in 1,4-dioxane (10 mL) and 2M aqueous Na2C03 solution (2 mL) was degassed and flushed with N2 three times. The reaction mixture was heated with stirring at 90°C until TLC or LCMS analysis indicated that the reaction was complete. The reaction mixture was allowed to cool to room temperature and evaporated in vacuo. The crude residue was suspended in EtOAc (30 mL) and washed with water. The aqueous phases were extracted with further EtOAc (4 x 30 mL) and the combined organic layers dried (MgS04), filtered and concentrated in vacuo. The crude product was purified by chromatography (Si02; 2-50% EtOAc in DCM) to give the title compound. δΗ (MeOD-d4, 400 MHz) 8.32 (dd, J2.5, 0.5 Hz, 1H), 7.91 (dd, J 8.7, 2.6 Hz, 1H), 7.67 (d, J 8.4 Hz, 1H), 7.52-7.54 (m, 1H), 7.47 (dd, J 8.4, 1.7 Hz, 1H), 7.35-7.42 (m, 1H), 7.24-7.28 (m, 1H), 7.17 (td, J7.6, 1.1 Hz, 1H), 6.97 (t, J73.6 Hz, 1H), 6.89-6.93 (m, 1H), 6.87 (dd, J 8.7, 0.6 Hz, 1H), 5.58 (s, 2H), 3.95 (s, 3H), 2.61 (s, 3H). LCMS (ES+) 396 (M+H)+, RT 2.28 minutes. EXAMPLE 405 (METHOD M)
5-(l-[2-(Difluoromethoxy)benzyl]-2-meth^
Example 404 (11.37 g, 28.8 mmol) and pyridine hydrochloride (13.29 g, 115 mmol) were placed in a small round-bottomed flask and placed into a pre-heated sand bath at 160°C. Once the solids had melted the mixture was heated for a further 10 minutes at 160°C. The mixture was cooled to ambient temperature and ice-water was added with vigorous stirring. The resultant solid product was collected by filtration. The crude material was triturated with 2-propanol and dried under vacuum to give the title compound (3.20 g, 29%) as a brown solid. δΗ (DMSO-d6, 400 MHz) 11.22-12.16 (m,
IH), 7.82 (dd, J 9.6, 2.8 Hz, IH), 7.61-7.66 (m, 2H), 7.57 (d, J 8.4 Hz, IH), 7.32-7.40 (m, 2H), 7.35 (t, J 73.9 Hz, IH), 7.24-7.29 (m, IH), 7.11-7.16 (m, IH), 6.66-6.70 (m, IH), 6.41 (d, J9.5 Hz, IH), 5.52 (s, 2H), 2.46 (s, 3H). LCMS (ES+) 382 (M+H)+, RT 1.55 minutes.
EXAMPLE 406 (METHOD N)
1 -(2,5-Dichlorobenzyl)-2-methyl-6-[4-(pyridin-3-yl)piperazin- 1 -yl]- lH-benzimidazole A mixture of Intermediate 48 (50 mg, 0.14 mmol), l-(pyridin-3-yl)piperazine (44 mg, 0.27 mmol), XPhos ligand (12.9 mg, 0.027 mmol), Pd2(dba)3 (12.4 mg, 0.0135 mmol) and sodium tert-butoxide (26 mg, 0.27 mmol) in toluene (2.5 mL) was degassed and flushed with N2 three times. The reaction mixture was stirred at 110°C for 18 h. The reaction mixture was allowed to cool to room temperature and the volatiles were removed in vacuo. The residue was diluted with 5% MeOH/DCM (2 mL) and washed with water (1 mL). The organic phase was passed down a phase separator and concentrated in vacuo. The crude product was purified by mass-directed preparative HPLC to give the title compound (6.6 mg, 10%) as a white solid. δΗ (DMSO-d6, 400 MHz) 8.36 (d, J2.9 Hz, IH), 8.02 (dd, J4.6, 1.2 Hz, IH), 7.61 (d, J 8.6 Hz, IH), 7.42-7.48 (m, 2H), 7.36-7.41 (m, IH), 7.24 (dd, J 8.4, 4.6 Hz, IH), 7.04 (d, J2.1 Hz, IH), 6.97 (dd, J 8.7, 2.2 Hz, IH), 6.45 (d, J2.5 Hz, IH), 5.51 (s, 2H), 3.32-3.37 (m, 4H), 3.22-3.27 (m, 4H), 2.41 (s, 3H). LCMS (ES+) 453 (M+H)+, RT 1.25 minutes. EXAMPLES 407 TO 409
The following compounds were synthesized from Intermediate 48 and the appropriate amine in accordance with Method N.
Figure imgf000212_0001
EXAMPLES 410 TO 433
These compounds can be synthesized from Intermediate 48 and the appropriate boronic acid or ester thereof (e.g. the pinacol ester) in accordance with Method L. If desired, PdCl2(dppf) can be used as an alternative catalyst. Reagents containing NH groups can be protected as N-BOC derivatives and deprotection effected at a subsequent convenient stage by treatment with trifluoroacetic acid or hydrochloric acid. The following compounds were prepared.
Example Compound Name LCMS RT Mass Ion
6-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.26 386
410
benzimidazol-6-yl]pyridazin-3-ol (M+H)+
5-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 0.97 386
41 1
benzimidazol-6-yl]pyrazin-2-ol (M+H)+ l-(2,5-Dichlorobenzyl)-6-(6-methoxypyridin-3-yl)-2- 2.58 399
412
methyl- lH-benzimidazole (M+H)+ l-(2,5-Dichlorobenzyl)-2-methyl-6-(pyridin-4-yl)- 2.04 369
413
lH-benzimidazole (M+H)+
5-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.31 399
414
benzimidazol-6-yl] -4-methylpyridin-2( 1 H)-one (M+H)+
415 5-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.54 408 benzimidazol-6-yl]-3-methylpyridine-2-carbonitrile (M+H)+ l-(2,5-Dichlorobenzyl)-6-(5-methoxypyridin-3-yl)-2- 1.49 399
416
methyl- lH-benzimidazole (M+H)+ l-(2,5-Dichlorobenzyl)-2-methyl-6-[6-(piperazin-l- 2.01 453
417
yl)pyridin-3 -yl] - lH-benzimidazole (M+H)+ l-(2,5-Dichlorobenzyl)-6-(2-methoxypyrimidin-5- 1.27 400
418
yl)-2-methyl-lH-benzimidazole (M+H)+ tert-Butyl 4-[l -(2,5-dichlorobenzyl)-2-methyl-lH- 2.96 473
419 benzimidazol-6-yl] -3 ,6-dihydropyridine- 1 (2H)- (M+H)+
carboxylate
5-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.12 386
420
benzimidazol-6-yl]pyrimidin-2(lH)-one (M+H)+
5-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.39 399
421
benzimidazol-6-yl] - 1 -methylpyridin-2( 1 H)-one (M+H)+ l-(2,5-Dichlorobenzyl)-6-(3,5-dimethylisoxazol-4- 1.58 387
422
yl)-2-methyl-lH-benzimidazole (M+H)+
5-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.27 399
423
benzimidazol-6-yl] -6-methylpyridin-2( 1 H)-one (M+H)+ l-(2,5-Dichlorobenzyl)-2-methyl-6-(pyrimidin-5-yl)- 1.36 370
424
lH-benzimidazole (M+H)+
1 -(2,5-Dichlorobenzyl)-2-methyl-6-(l -methyl- 1H- 1.41 372
425
pyrazol-5-yl)-lH-benzimidazole (M+H)+ l-(2,5-Dichlorobenzyl)-6-(3,5-dimethyl-lH-pyrazol- 1.34 386
426
4-yl)-2-methyl-lH-benzimidazole (M+H)+
5-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.31 384
427
benzimidazol-6-yl]pyridin-3-amine (M+H)+ l-(2,5-Dichlorobenzyl)-2-methyl-6-[4-(pyrrolidin-l- 1.60 451
428
ylmethyl)phenyl]-lH-benzimidazole (M+H)+
1 -(2,5-Dichlorobenzyl)-6-(l ,3-dimethyl-lH-pyrazol- 1.39 386
429
4-yl)-2-methyl-lH-benzimidazole (M+H)+
4-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.35 384
430
benzimidazol-6-yl]pyridin-2-amine (M+H)+
1 -(2,5-Dichlorobenzyl)-6-(l ,5-dimethyl-lH-pyrazol- 1.40 386
431
4-yl)-2-methyl-lH-benzimidazole (M+H)+
5-[l -(2,5-Dichlorobenzyl)-2-methyl-lH- 1.29 385
432
benzimidazol-6-yl]pyridin-2(lH)-one (M+H)+ 5-[l-(2,5-Dichlorobenzyl)-2-methyl-lH- 1.36 413
433
benzimidazol-6-yl]-4,6-dimethylpyridin-2(lH)-one (M+H)+
EXAMPLE 434
1 -(2,5-Dichlorobenzyl)-2-methyl-6-(l -oxidopyridin-4-yl)- lH-benzimidazole
From Example 413 by oxidation with mCPBA in DCM to give the title compound.
LCMS 385 (M+H)+, RT 1.72 minutes.
EXAMPLE 435 5-[l-(2,5-Dichlorobenzyl)-2-methyl-lH-benzimidazol-6-yllpiperidin-2-one
From Example 432 by reduction with hydrogen (100 psi) and catalytic Pt02 to give the title compound. LCMS 389 (M+H)+, RT 1.27 minutes.
EXAMPLE 436
1 -(2,5-Dichlorobenzyl)-2-methyl- lH-benzimidazole
From 2-fluoronitrobenzene and 2,5-dichlorobenzylamine in accordance with Method K. LCMS 292 (M+H)+, RT 2.27 minutes. EXAMPLE 437 l-r5-Chloro-2-(difluoromethoxy)benzyl1-6-(6-methoxypyridin-3-yl)-2-methyl-lH- benzimidazole
From Intermediate 49 and 6-methoxypyridin-3-ylboronic acid in accordance with Method L to give the title compound. LCMS 430 (M+H)+, RT 1.58 minutes.
EXAMPLE 438
5- ( 1 -[5-Chloro-2-(difluoromethoxy)benzyll-2-methyl- lH-benzimidazol-6-yl|pyridin- 2(lH)-one
From Example 437 in accordance with Method M to give the title compound. LCMS 416 (M+H)+, RT 1.28 minutes. EXAMPLE 439
5- (l-[2-(Difluoromethoxy)benzyll-5-fluoro-2-methyl-lH-benzimidazol-6-yl|py 2(lH)-one
From Intermediate 50 and 6-hydroxypyridin-3-ylboronic acid pinacol ester in accordance with Method L to give the title compound. LCMS 400 (M+H)+, RT 1.25 minutes.
EXAMPLE 440
6- Bromo-l-[(5-chloro-2-methyl-l,3-thiazol-4-yl)methyll-2-methyl-lH-benzimidazole
From (5-chloro-2 -methyl- l,3-thiazol-4-yl)methylamine in accordance with Method K to give the title compound. LCMS 357 (M+H)+, RT 1.54 minutes.
EXAMPLE 441
5 - ( 1 -[(5 -Chloro-2-methyl- 1 ,3 -thiazol-4-yl)methyl] -2-methyl- lH-benzimidazol-6-yl| - pyridin-2(lH)-one
From Example 440 and 6-hydroxypyridin-3-ylboronic acid pinacol ester in accordance with Method L to give the title compound. LCMS 371 (M+H)+, RT 1.17 minutes.
EXAMPLE 442 l-(2,5-Dichlorobenzyl)-2-methyl-lH-benzimidazole-6-carbonitrile
From 3-fluoro-4-nitrobenzonitrile and 2,5-dichlorobenzylamine in accordance wit Method K to give the title compound. LCMS 317 (M+H)+, RT 1.45 minutes. EXAMPLE 443
5-[ 1 -(2,5-Dichlorobenzyl)-5-fluoro-2-methyl- lH-benzimidazol-6-yllpyridin-2(lH)-one From Intermediate 51 and 6-hydroxypyridin-3-ylboronic acid pinacol ester in accordance with Method L to give the title compound. LCMS 403 (M+H)+, RT 1.28 minutes.
EXAMPLE 444 6-Bromo- 1 - r2-(difluoromethoxy)benzvH -2-(methoxymethyl)- 1 H-benzimidazole
A solution of 5-bromo-N;-[2-(difluoromethoxy)benzyl]benzene-l,2-diamine (Intermediate 47, Step 2) (8.3 g, 24 mmol) in DCM (50 mL) was treated with DIPEA (8.4 mL, 48 mmol) and methoxyacetic acid (2.2 mL, 29 mmol) followed by HATU (11 g, 29 mmol) and the mixture was stirred at ambient temperature under N2 for 1 h. The mixture was then diluted with DCM (100 mL) and washed with water (100 mL). The aqueous layer was extracted with dichloromethane (200 mL) and the combined organic layers were washed with brine (100 mL) and dried over MgSC^. Removal of solvent in vacuo gave a crude gum (23 g), which was taken up in acetic acid (30 mL) and heated to 100°C under N2 for 3 h. The mixture was concentrated in vacuo, and the residue was suspended in Na2C03 (10% aqueous solution, 200 mL) and extracted with ethyl acetate (2 x 150 mL). The combined organic extracts were washed with brine (150 mL) and dried over MgS04. Removal of solvent in vacuo gave a crude solid which was purified by chromatography using a short pad of silica gel (loaded in dichloromethane, eluted with ethyl acetate :isohexane, 2:3 by volume) to give the title compound (6.2 g, 65%>) as a white solid. δΗ 7.69 (d, IH), 7.63 (d, IH), 7.32-7.39 (m, 3H), 7.25 (d, IH), 7.14 (t, IH) 6.71 (d, IH), 5.56 (s, 2H), 4.64 (s, 2H), 3.23 (s, 3H). LCMS (6120B, 3 minutes method, pH 10) mlz 397.2, RT 1.04 minutes. EXAMPLE 445 (METHOD O) l-[2-(Difluoromethoxy)benzyl]-2-(methoxymem^
yl]- lH-benzimidazole
To Example 444 (50 mg, 0.12 mmol) were added 4-[5-(4,4,5,5-tetramethyl-l,3,2- dioxaborolan-2-yl)pyrimidin-2-yl]morpholine (44 mg, 0.144 mmol), Pd(PPh3)4 (7.5 mg, 0.006 mmol), 2M aqueous Na2C03 solution (0.5 mL) and 1,4-dioxane (2.5 mL). The reaction mixture was flushed with nitrogen and heated to 105°C under a nitrogen atmosphere for 18 h. The reaction mixture was allowed to cool to ambient temperature, MP-TMT resin (Biotage, 0.76 mmol/g, 300 mg, 0.25 mmol) was added and the solution was agitated at room temperature overnight. Ethyl acetate (20 mL) was added and the mixture was passed through a silica pad cartridge, eluting with further ethyl acetate (2 x 5 mL) and finally a solution of 20% methanol in ethyl acetate (2 x 10 mL). The combined organic phases were concentrated in vacuo. The crude residue was purified by reverse phase preparative HPLC to give the title compound (17 mg, 30%>) as a white solid.
LCMS (pH 3) M+H 483, RT 1.92 minutes, UV purity 100%; LCMS (pH 10) M+H 483, RT 2.23 minutes, UV purity 100%.
EXAMPLES 446 TO 462
These compounds can be synthesized from Intermediate 444 and the appropriate boronic acid or ester thereof (e.g. the pinacol ester) in accordance with Method O.
Reagents containing NH groups can be protected as N-BOC derivatives and deprotection effected at a subsequent convenient stage by treatment with trifluoroacetic acid or hydrochloric acid. The following compounds were prepared.
Example Compound Name LCMS RT Mass Ion
4- { 1 -[2-(Difluoromethoxy)benzyl] -2-(methoxy- 2.07 411
446
methyl)- lH )enzimidazol-6-yl } phenol (M+H)+
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)- 1.40 481
447 6-[2-(piperazin- 1 -yl)pyrimidin-5 -yl] - 1H- (M+H)+ benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)- 1.49 493
448
6-[4-(piperazin-l-ylmethyl)phenyl]-lH- (M+H)+ benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)- 1.41 480 6-[6-(piperazin-l -yl)pyridin-3-yl]-lH4oenzimidazole (M+H)+
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)- 1.69 454
6-[6-(propan-2-yloxy)pyridin-3-yl]-lH- (M+H)+ benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)- 6-[4-(pyrrolidin- 1 -ylmethyl)phenyl] - 1H- 478
1.70
(M+H)+ benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)-
479
1.71
6-[6-(piperidin-l -yl)pyridin-3-yl]-lH-benzimidazole (M+H)+
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)- 6- { 1 -[2-(morpholin-4-yl)ethyl]-lH-pyrazol-4-yl} - 498
1.36
(M+H)+ lH-benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)-
6-[5-(morpholin-4-ylmethyl)thiophen-3-yl]-lH- 500
1.54
(M+H)+ benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)-
6-[6-(trifluoromethyl)pyridin-3-yl]-lH- 464
1.61
(M+H)+ benzimidazole
tert-Butyl 4-(5-{l -[2-(difluoromethoxy)benzyl]-2- (methoxymethyl)-lH-benzimidazol-6-yl}pyrimidin- 581
1.70
(M+H)+ 2-yl)piperazine- 1 -carboxylate
1 -[4-(5- { 1 -[2-(Difluoromethoxy)benzyl] -2- (methoxymethyl)-lH-benzimidazol-6-yl}pyridin-2- 522
1.40
(M+H)+ yl)piperazin-l -yljethanone
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(methoxy- methyl)- lH4oenzimidazol-6-yl } pyridine-2- 440
1.03
(M+H)+ carboxylic acid
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)-
6-[6-(morpholin-4-yl)pyridin-3-yl]-lH- 481
1.50
(M+H)+ benzimidazole
3 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -(methoxy-
446
1.55
methyl)-lH4oenzimidazol-6-yl}quinoline (M+H)+
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)-
410
1.46
6-(6-methylpyridin-3-yl)-lH-benzimidazole (M+H)+ 5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(methoxy-
462 412
1.22
methyl)- lH-benzimidazol-6-yl } pyridin-2( 1 H)-one (M+H)+
EXAMPLE 463
Methyl 1 -r2-(difluoromethoxy)benzyl1-2-methyl- lH-benzimidazole-6-carboxylate
From methyl 3-fluoro-4-nitrobenzoate in accordance with Method K to give the title compound. LCMS mass ion 347, RT 1.44 minutes.
EXAMPLES 464 TO 487 These compounds can be synthesized by a sequence of steps corresponding to
Method K followed by Method L, utilising the appropriate boronic acid or ester thereof (e.g. the pinacol ester), the appropriate amine and the appropriate carboxylic acid.
Reagents containing NH groups can be protected as N-BOC derivatives and deprotection effected at a subsequent convenient stage by treatment with trifluoroacetic acid or hydrochloric acid. The N-oxide derivatives can be prepared by oxidation with mCPBA. The following compounds were prepared.
Example Compound Name LCMS RT Mass Ion
1 -[1 -(4-Chlorophenyl)ethyl]-6-(6-methoxypyridin-3-
464 1.60 378 yl)-2-methyl-lH-benzimidazole
1- (2,6-Dimethylbenzyl)-6-(6-methoxypyridin-3-yl)-
465 1.58 358
2- methyl-lH-benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -6 -(2, 6 -dimethyl -
466 1.45 394 pyridin-4-yl)-2-methyl-lH-benzimidazole
l-(2,6-Dichlorobenzyl)-6-(6-methoxypyridin-3-yl)-2-
467 1.59 399 methyl- lH-benzimidazole
6-(6-Methoxypyridin-3-yl)-2-methyl-l -(1 -phenyl-
468 1.57 358 propyl)- lH-benzimidazole
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
469 methyl-6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - 1H- 1.29 439 benzimidazole
470 1 -[2-(Difluoromethoxy)benzyl] -6-(2,6-dimethyl- 1 - 1.31 410 oxidopyridin-4-yl)-2-methyl-lH-benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - { 6 - [4 - (2,2,2-trifluoroethyl)piperazin-l -yl]pyridin-3-yl} - 1.64 532 lH-benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [6 - (2,2,2-trifluoroethoxy)pyridin-3 -yl] - 1H- 1.67 464 benzimidazole
tert-Butyl 4- {l-[2-(difluoromethoxy)benzyl]-2- methyl-lH-benzimidazol-6-yl}-3,6-dihydropyridine- 1.67 470 1 (2H)-carboxylate
- - -
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
1.50 410 benzimidazol-6-yl}-N,N-dimethylpyrimidin-2-amine
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [4 - methyl-6-(2,2,2-trifluoroethoxy)pyridin-3-yl]-lH- 1.69 478 benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -6-(6-methoxy-
1.48 382 pyridin-3-yl)-lH-benzimidazole
tert-Butyl 4-(5-{l -[2-(difluoromethoxy)benzyl]-2- methyl-lH-benzimidazol-6-yl}-4-methylpyridin-2- 1.93 564 yl)piperazine- 1 -carboxylate
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [4 - methyl-6-(piperazin- 1 -yl)pyridin-3 -yl] - 1H- 0.96 464 benzimidazole
1 - [2-(Difluoromethoxy)benzyl] -6 -(6 -methoxy-4 -
1.53 410 methylpyridin-3-yl)-2-methyl-lH-benzimidazole
l-(2,5-Dichlorobenzyl)-2-ethyl-6-(pyridin-4-yl)-lH-
2.28 383 benzimidazole
6-(6-Methoxypyridin-3-yl)-2-methyl-l -[(1S)-1 -
1.53 344 phenylethyl] - lH-benzimidazole
5-{2-Methyl-l -[(1S)-1 -phenylethyl]-lH-
1.20 330 benzimidazol-6-yl }pyridin-2( 1 H)-one
l-[(lS)-l -(3-Chlorophenyl)ethyl]-6-(6-methoxy-
2.42 378 pyridin-3-yl)-2-methyl-lH-benzimidazole
l-Benzyl-6-(6-methoxypyridin-3-yl)-2-methyl-lH-
2.16 330 benzimidazole 2-Methyl-l -[(1R)-1 -phenylethyl]-6-(pyridin-4-yl)-
486 1.90 314 lH-benzimidazole
2-Methyl-l -[(1S)-1 -phenylethyl]-6-(pyridin-4-yl)-
487 1.90 314 lH-benzimidazole
EXAMPLE 471: ALTERNATIVE PREPARATION l-r2-(Difluoromethoxy)benzyl1-2-methyl-6-(6-r4-(2,2,2-trifluoroethyl)piperazin-l- yllpyridin-3 -yl| - lH-benzimidazole
Example 490 (67 mg, 0.13 mmol), DBU (38 μί, 0.25 mmol) and 2,2,2-trifluoro- ethyl /?-toluenesulfonate (71 mg, 0.28 mmol) were dissolved in acetonitrile (1 mL) and heated under microwave irradiation at 180°C for 2 h. LCMS showed 24% desired product. Further microwave heating at 200°C for 2 h, then 215°C for 1 h, showed 40% conversion by LCMS. Solvent was removed in vacuo and the residue was purified by chromatography (silica, gradient 0 to 7% MeOH in dichloromethane), to give the title compound (19 mg, 26%) as a white solid. δΗ (d6-DMSO) 8.41 (d, 1H, J2.3 Hz), 7.82 (dd, 1H, J 8.8, 2.4 Hz), 7.64-7.57 (m, 2H), 7.48-7.37 (m, 2H), 7.35 (t, 1H, JH_F 73.8 Hz), 7.26 (d, 1H, J 8.8 Hz), 7.15 (t, 1H, J 7.5 Hz), 6.90 (d, 1H, J 8.8 Hz), 6.77 (d, 1H, J 6.7 Hz), 5.52 (s, 2H), 3.54-3.51 (m, 4H), 3.23 (q, 2H, JH_F 10.2 Hz), 2.73-2.69 (m, 4H), 2.49 (s, 3H hidden by DMSO signal). LCMS (ES+) 532 (M+H)+.
EXAMPLE 472: ALTERNATIVE PREPARATION l-[2-(Difluoromethoxy)benzyll-2-methyl-6-[6-(2,2,2-trifluoroethoxy)pyridin-3-yll-lH- benzimidazole
Example 405 (250 mg, 0.65 mmol) was dissolved in dry THF (5 mL) and NaH (60%) dispersion in oil, 29 mg, 0.71 mmol) was added. The mixture was stirred at room temperature for 5 minutes until gas evolution had ceased. Then 2,2,2-trifluoroethyl p- toluenesulfonate (182 mg, 0.71 mmol) was added and the mixture was heated to 80°C for 18 h. The mixture was cooled, diluted with water (100 mL) and extracted with ethyl acetate (75 mL). The organic phase was dried (Na2S04) and concentrated in vacuo. The residue was purified by chromatography (silica, gradient 0 to 7% MeOH in DCM) to give the title compound (31 mg, 10%) as a white solid. δΗ (d6-DMSO) 8.41 (dd, 1H, J2.5, 0.5 Hz), 8.02 (dd, 1H, J 8.6, 2.5 Hz), 7.70 (d, 1H, 0.5 Hz), 7.56 (d, 1H, J 8.4 Hz), 7.41 (dd, IH, 8.4, 1.7 Hz), 7.32 (m, IH), 7.28 (t, 1H, JH_F 73.8 Hz), 7.19 (d, 1H, J7.5 Hz), 7.08 (dt, 1H, J 7.5, 1.2 Hz), 6.99 (dd, IH, J 8.6, 0.5 Hz), 6.68 (dd, IH, 7.5, 1.4 Hz), 5.48 (s, 2H), 4.96 (q, 2H, JH_F 9.1 Hz), 2.49 (s, 3H hidden by DMSO signal). LCMS (ES+) 464 (M+H)+.
EXAMPLE 488 l-[2-(Difluoromethoxy)benzyll-2-(hydroxymethyl)-lH-benzimidazole-5-carbonitrile
Synthesized from Intermediate 40 and glycolic acid in accordance with Method J.
EXAMPLE 489 l-r2-(Difluoromethoxy)benzyl1-2-methyl-6-(4-methylimidazol-l-yl)-lH-benzimidazole To a mixture of Intermediate 57 (250 mg, 0.67 mmol), 4-methylimidazole (82 mg, 1.00 mmol) and Cu(OAc)2 (122 mg, 0.67 mmol) in methanol: water (4: 1, 30 mL) was added TMEDA (0.20 mL, 1.34 mmol). The reaction mixture was stirred at room temperature for 24 h. Solvent was removed in vacuo and the residue was purified by column chromatography (Si02, gradient 0 to 10% MeOH in dichloromethane). The product fractions were concentrated in vacuo. The resulting material was further purified by preparative HPLC and freeze-dried to afford the title compound (45 mg, 18%) as a white solid. δΗ (d6-DMSO) 8.01 (d, 1H, J 1.0 Hz), 7.71 (d, 1H, J2.0 Hz), 7.64 (d, 1H, J 8.5 Hz), 7.40-7.35 (m, 3H), 7.35 (t, IH, JH_F 73.8 Hz), 7.27 (d, 1H, J 8.0 Hz), 7.15 (m, IH), 6.73 (d, 1H, J 7.2 Hz), 5.53 (s, 2H), 2.47 (s, 3H), 2.15 (s, 3H). LCMS (ES+) 369 (M+H)+.
EXAMPLE 490
1 - r2-(Difluoromethoxy)benzvH -2-methyl-6- r6-(piperazin- 1 -yl)pyridin-3 -yll -\H- benzimidazole
The following experiment was carried out twice in parallel.
Trifluoroacetic acid (100 mL) was added in portions to a chilled (0°C) solution of Intermediate 58 (25.25 g, 46 mmol) in DCM (50 mL) and stirred in an ice-bath for 30 minutes. Each reaction mixture was evaporated to a thin syrup, poured into a stirred mixture of NaHC03/ice/water and stirred for 1 h. The solid was filtered, washed several times with water and dried by suction. The solid was recrystallized from a 1 : 1 mixture of 2-propanol and 1-butanol to give the title compound (34 g, 82%) as a cream solid. 5H (DMSO-dg) 8.41 (d, J2.4 Hz, 1H), 7.81 (dd, J 8.9 Hz, J2 2.6 Hz, 1H), 7.64 (d, J 1.3 Hz, 1H), 7.59 (m, 1H), 7.40 (m, 2H), 7.35 (t, JH,F 76 Hz, 1H), (m, 1H), 7.16 (m, 1H), 6.86 (d, J 8.9 Hz, 1H), 6.78 (m, 1H), 5.53 (s, 2H), 3.43 (m, 4H), 2.79 (m, 4H), 2.50 (s, 3H).
LCMS (ES+) 450 (M+H)+, RT 1.30 minutes.
EXAMPLE 491 (METHOD O)
Ethyl 2-[4-(5- ( 1 -[2-(difluoromethoxy)benzyl]-2-methyl- lH-benzimidazol-6-yl|pyridin- 2-yl)piperazin- 1 -yl]acetate
Example 490 (450 mg, 1.00 mmol) and ethyl bromoacetate (167 mg, 1.00 mmol) were dissolved in acetonitrile (15 mL) and heated to 70°C for 5 h. Solvent was removed in vacuo and the residue was purified by chromatography (silica, gradient 0 to 6% MeOH in DCM) to give a pale yellow oil. Further purification was achieved by preparative HPLC to give, after freeze-drying, the title compound (143 mg, 26%) as a white solid. 5H (dg-DMSO) 8.44 (d, 1H, J2.4 Hz), 7.86 (dd, 1H, J 8.7, 2.2 Hz), 7.70 (s, 1H), 7.63 (d, 1H, 8.1 Hz), 7.47 (d, 1H, J 8.1 Hz), 7.39 (m, 1H), 7.35 (t, 1H, JH_F 73.8 Hz), 7.27 (d, 1H, J 8.1 Hz), 7.17 (m, 1H), 6.94 (d, 1H, J 8.9 Hz), 6.86 (d, 1H, J7.6 Hz), 5.57 (s, 2H), 4.14 (q, 2H, J 7.1 Hz), 3.59 (m, 2H), 2.80-2.60 (br m, 8H), 2.54 (s, 3H), 1.24 (t, 3H, J7.1 Hz). LCMS (ES+) 536 (M+H)+.
EXAMPLE 492
2-[4-(5-(l-[2-(Difluoromethoxy)benzyll-2 -methyl- lH-benzimidazol-6-yl|pyridin-2-yl)- piperazin-l-yl] acetic acid HC1 salt
Example 491 (120 mg, 0.22 mmol) was dissolved in THF (3 mL) and water (4 mL), and cone. HC1 (2 mL) was added. The mixture was heated to 60°C for 18 h, then concentrated in vacuo. The residue was purified by preparative HPLC (pH 3) to give, after freeze-drying, the title compound (45 mg, 37%) as a white solid. 5H (d6-DMSO) 8.42 (d, 1H, J2.4 Hz), 7.82 (dd, 1H, J 8.8, 2.5 Hz), 7.64 (d, 1H, J 1.0 Hz), 7.59 (d, 1H, 8.4 Hz), 7.42-7.35 (m, 2H), 7.35 (t, 1H, JH_F 73.8 Hz), 7.26 (d, 1H, J 8.3 Hz), 7.16 (m, IH), 6.90 (d, IH, J 9.0 Hz), 6.78 (d, IH, J 7.3 Hz), 5.53 (s, 2H), 3.22 (s, 2H), 2.70-2.62 (m, 8H), 2.50 (s, 3H, obscured by DMSO signal). LCMS (ES+) 508 (M+H)+.
EXAMPLE 493 (METHOD R)
4-(5 - ( 1 2-(Difluoromethoxy)benzyl1 -2-(methoxymethv0- 1 H-benzimidazol-6-yl| pyridin- 2-yl)piperazin-2-one
A solution of Intermediate 59 (50 mg, 0.12 mmol), triethylamine (33 μί, 0.23 mmol) and piperazin-2-one (35 mg, 0.35 mmol) in DMSO (0.2 mL) was heated by microwave irradiation, in a sealed vessel, to 190°C for 10 minutes and then to 220°C for 10 minutes. The crude mixture was purified by preparative -HPLC to give the title compound (7 mg) as a white solid. LCMS (pH 10) mlz 495, RT 1.96 minutes.
EXAMPLE 494
4-(5-(l-[2-(Difluoromethoxy)benzyll-2-(methoxymethyl)-lH-benzimidazol-6-yl|pyridin-
2-yl)thiomorpholine
A solution of Intermediate 59 (300 mg, 0.7 mmol), triethylamine (197 μί, 1.40 mmol) and thiomorpholine (211 ]iL, 2.09 mmol) in DMSO (1.2 mL) was heated to 190°C by microwave irradiation in a sealed tube for 10 minutes, followed by heating to 200°C for 15 minutes and heating to 205°C for 15 minutes. The crude reaction mixture was purified by preparative HPLC to give the title compound (80 mg) as a white, waxy solid. δΗ (DMSO-d6, 300 MHz) 8.40 (d, IH), 8.81 (dd, IH), 7.59-7.71 (m, 2H), 7.47 (d, IH),
7.33-7.38 (t, 2H), 7.26 (d, IH), 7.13 (t, IH), 6.91 (d, IH), 6.76 (d, IH), 5.60 (s, 2H), 4.65 (s, 2H), 3.93 (m, 4H), 3.25 (s, 3H), 2.59 (m, 4H). LCMS (pH 10) 498 (M+H)+, RT 2.49 minutes.
EXAMPLE 495 l-[2-(Difluoromethoxy)benzyll-2-(methoxymethyl)-6-[6-(l-oxidothiomorpholin-4- yl)pyridin-3 -yl] - lH-benzimidazole
A solution of Example 494 (70 mg, 0.14 mmol) in dichloromethane (20 mL) was cooled to 0°C and treated with mCPBA (75%, 32 mg, 0.14 mmol), added portionwise over 1 minute. The mixture was allowed to warm to ambient temperature over 1 h, then quenched with sodium metabisulphite (5% aqueous solution, 50 mL). The layers were separated and the organic phase concentrated in vacuo. The residue was purified by preparative HPLC to give the title compound (17 mg) as a white solid. 5H (DMSO-d6, 300 MHz) 8.45 (d, 1H), 7.86 (dd, 1H), 7.59-7.72 (m, 2H), 7.49 (dd, 1H), 7.32-7.38 (m, 2H), 7.26 (d, 1H), 7.03-7.15 (m, 2H), 6.76 (d, 1H), 5.61 (s, 2H), 4.66 (s, 2H), 4.17 (d, 2H), 3.95 (t, 2H), 3.25 (s, 3H), 2.87 (t, 2H), 2.68 (t, 2H). LCMS (pH 10) mlz 513.7, RT 1.88 minutes. EXAMPLE 496 l-[2-(Difluoromethoxy)benzyl"|-6-[6-(l ,l-dioxidothiomorpholin-4-yl)pyridin-3-yll-2- (methoxymethvD-lH-benzimidazole
A solution of Example 494 (70 mg, 0.14 mmol) in dichloromethane (20 mL) was cooled to 0°C and treated with mCPBA (75%, 32 mg, 0.14 mmol), added portionwise over 1 minute. The mixture was allowed to warm to ambient temperature over 1 h, then quenched with sodium metabisulphite (5% aqueous solution, 50 mL). The layers were separated and the organic phase concentrated in vacuo. The residue was purified by preparative HPLC to give the title compound (10 mg) as a white solid. δΗ (DMSO-d6, 300 MHz) 8.45 (d, 1H), 7.90 (dd, 1H), 7.59-7.73 (m, 2H), 7.50 (dd, 1H), 7.24-7.38 (m,
3H), 7.09-7.15 (m, 2H), 6.76 (d, 1H), 5.61 (s, 2H), 4.66 (s, 2H), 4.09 (s, 4H), 3.25 (s, 3H), 3.11 (s, 4H). LCMS (pH 10) mlz 529.6, RT 2.09 minutes.
EXAMPLE 497
5- ( 1 -[2-(Difluoromethoxy)benzyll-2-(methoxymethyl)- lH-benzimidazol-6-yl| -N-(2- methoxyethyl)pyridin-2-amine
A solution of Intermediate 59 (50 mg, 0.12 mmol), triethylamine (33 μί, 0.23 mmol) and 2-methoxyethylamine (30 μί, 0.35 mmol) in DMSO (0.2 mL) was heated by microwave irradiation, in a sealed vessel, to 170°C for 10 minutes and then to 190°C for 10 minutes. The crude mixture was purified by preparative HPLC to give the title compound (3 mg) as a white solid. LCMS (pH 10) 469.8 (M+H)+, RT 2.14 minutes. EXAMPLE 498
1 -(5 - ( 1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)- 1 H-benzimidazol-6-yl| pyridin- 2-yl)- 1 ,4-diazepan-5-one
A solution of Intermediate 59 (50 mg, 0.12 mmol), triethylamine (49 μί, 0.35 mmol) and l,4-diazepan-5-one (40 mg, 0.35mmol) in DMSO (0.2 mL) was heated to 205°C by microwave irradiation in a sealed tube for 25 minutes, then allowed to cool. The crude reaction mixture was purified by preparative HPLC to give the title compound (8 mg) as a white solid. δΗ (DMSO-d6, 300 MHz) 8.41 (d, IH), 7.82 (dd, IH), 7.70 (d, IH), 7.62 (m, 2H), 7.47 (dd, IH), 7.33-7.38 (m, IH), 7.34 (t, IH), 7.26 (d, IH), 7.12-7.15 (m, IH), 6.90 (d, IH), 6.77 (d, IH), 5.60 (s, 2H), 4.66 (s, 2H), 4.76-3.83 (m, 4H), 3.29 (s, 2H), 3.26 (s, 3H), 3.15-3.20 (m, 2H). LCMS (pH 10) mlz 494.8, RT 1.96 minutes.
EXAMPLE 499
1 -(2,5 -Dimethylbenzyl)-6- [4-(piperazin- 1 -ylmethyOphenyll -2-(pyridin-4-ylmethy0- \H- benzimidazole
Hydrogen chloride in 1 ,4-dioxane (4N; 4 mL) was added to a stirred solution of Intermediate 64 (300 mg, 0.5 mmol) in DCM (1 mL) and the mixture was stirred for 1 h. LCMS showed completion of reaction. Solvents were removed under reduced pressure. The residue was dissolved in DCM, washed twice with a saturated aqueous solution of sodium bicarbonate, dried (MgS04) and concentrated to dryness by rotary evaporation. The resulting solid material was triturated in diethyl ether, filtered, washed with diethyl ether and dried under suction, to give the title compound (205 mg, 82%) as a pale yellow solid. δΗ (DMSO-d6) 8.39 (m, 2H), 7.72 (d, J 8.4 Hz, IH), 7.66 (d, J 1.2 Hz, IH), 7.60 (d, J 8.2 Hz, 2H), 7.52 (dd, Ji 8.4 Hz, J2 1.6 Hz, IH), 7.35 (d, J 8.1 Hz, 2H), 7.22 (d, J5.9 Hz, 2H), 7.08 (m, IH), 6.90 (dd, J 7.4 Hz, J2 0.2 Hz, IH), 5.92 (s, IH), 5.53 (m, 2H), 4.26 (s, 2H), 3.43 (m, 2H), 2.67 (m, 4H), 2.30 (s, 3H), 2.23 (m, 4H), 1.92 (s, 3H). LCMS (ES+) 503 (M+H)+, RT 1.31 minutes. EXAMPLES 500 TO 502
These compounds can be synthesized from Example 490 and the appropriate alkylating agent in accordance with Method Q. The following compounds were prepared (the alkylating agents for Examples 501 and 502 were methanesulfonylethene and acrylonitrile respectively).
Figure imgf000227_0001
EXAMPLE 503
3-r4-(5-(l-r2-(Difluoromethoxy)benzyH-2 -methyl- lH-benzimidazol-6-yl|pyridin-2-yl)- piperazin-l-vHpropionic acid
Hydrolysis of Example 500 according to the procedure described in Example 495. LCMS RT 1.40 minutes
EXAMPLES 504 TO 507
The following compounds were synthesised from Intermediate 59 and the appropriate amine in accordance wit Method R.
Example Compound Name LCMS RT Mass Ion
(3R)-1 -(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-
504 (methoxymethyl)-lH-benzimidazol-6-yl}pyridin-2- 1.39 481 yl)pyrrolidin-3-ol 1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)-
505 6- {6-[4-(methylsulfonyl)piperazin-l -yl]pyridin-3- 1.48 558 yl} -lH-benzimidazole
2-[N-(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-
506 (methoxymethyl)-lH-benzimidazol-6-yl}pyridin-2- 1.43 469 yl)-N-(methyl)amino] ethanol
1 -[2-(Difluoromethoxy)benzyl] -2-(methoxymethyl)-
507 1.60 465
6-[6-(pyrrolidin- 1 -yl)pyridin-3 -yl]- lH-benzimidazole
EXAMPLE 508
1 -(5 - ( 1 -r2-(Difluoromethoxy benzyl1 -2-methyl- 1 H-benzimidazol-6-yl| -3 Ά '.5 '.6 '- tetrahydro-2 Ή- [2,4 'Ibipyridinyl- 1 '-yDethanone
To Intermediate 57 (458 mg, 1.11 mmol) were added l-(5-bromo-3',4',5',6'- tetrahydro-2'H-[2,4']bipyridinyl-l '-yl)ethanone (376 mg, 1.33 mmol), Pd(PPh3)4 (64 mg, 0.055 mmol), 2M aqueous Na2C03 solution (7 mL) and 1,4-dioxane (35 mL). The reaction mixture was stirred under N2 at 105°C for 4 h. The reaction mixture was cooled to ambient temperature, diluted with water (10 mL) and extracted with ethyl acetate (2 x 100 mL), and the combined organic layers were concentrated in vacuo. The crude residue was purified by silica flash column chromatography, eluting with 0-20% MeOH/ethyl acetate, to yield the title compound (348 mg, 64%). δΗ (d6-DMSO, 300 MHz) 8.78 (IH, d, J 2.2 Hz), 7.90 (IH, dd, J 8.2, 2.5 Hz), 7.77 (IH, d, J 1.3 Hz), 7.64 (IH, d, J 8.4 Hz), 7.49 (IH, dd, J 8.3, 1.6 Hz), 7.40-7.34 (3H, m, incl. IH, t, J73.8 Hz), 7.25 (IH, d, J 7.6 Hz), 7.15 (IH, dt, J7.5, 1.1 Hz), 6.76 (IH, dd, J 7.6, 1.2 Hz), 5.55 (2H, s), 4.53-4.43 (IH, m), 4.04-3.90 (IH, m), 3.27-3.11 (IH, m), 3.01-2.92 (IH, m), 2.73-2.58 (IH, m), 3H not observed (CH3) under d6-DMSO peak at 2.50 ppm, 2.03 (3H, s), 1.90-1.81 (2H, m), 1.80- 1.46 (2H, m). LCMS (pH 3) 491.8, MH+, RT 1.47 minutes, 100% UV. LCMS (pH 10) 491.8, MH+, RT 2.05 minutes, 100% UV. EXAMPLE 509
5- ( 1 -[2-(Difluoromethoxy)benzyl]-2-methyl- lH-benzimidazol-6-yl| -3-methylpyridin- 2(lH)-one
To Intermediate 57 (140 mg, 0.34 mmol) were added 5-bromo-3-methylpyridin-2- ol (76 mg, 0.41 mmol), Pd(PPh3)4 (20 mg, 0.016 mmol), 2M aqueous Na2C03 solution (2 mL) and 1,4-dioxane (10 mL). The reaction mixture was stirred at 105°C for 4 h. Further Pd(PPh3)4 (20 mg, 0.016 mmol) and Na2C03 solution (1 mL) were added and the reaction mixture was stirred at 105°C overnight. The reaction mixture was cooled to ambient temperature, diluted with water (1 mL) and extracted with ethyl acetate (2 x 20 mL). The combined organic layers were concentrated in vacuo and the crude residue was purified by silica flash column chromatography (0-10% MeOH/DCM) and then by preparative HPLC to yield, after freeze-drying, the title compound (3 mg, 2%) as a white solid. δΗ (d6-DMSO) 11.59-11.25 (1H, br s), 7.72 (1H, d, J 1.4 Hz), 7.63-7.49 (3H, m), 7.40-7.33 (3H, m), 7.26 (1H, d, J 7.6 Hz), 7.16-7.11 (1H, m), 6.68-6.65 (1H, m), 5.52 (2H, s), 2.45 (3H, s), 2.00 (3H, s). LCMS (pH 3) 396.8, MH+, RT 1.33 minutes, 100% UV. LCMS (pH 10) 396.8, MH+, RT 1.66 minutes, 100% UV.
EXAMPLE 510 (METHOD S)
4-(5-(l-[2-(Difluoromethoxy)benzyll-2-methyl-lH-benzimidazol-6-yl|pyrimidin-2-yl)- piperazin-2-one
To a solution of Intermediate 65 (76 mg, 0.19 mmol) in ethanol (2 mL) were added piperazin-2-one (19 mg, 0.19 mmol) and triethylamine (19 mg, 0.19 mmol). The reaction mixture was stirred at 85°C for 18 h. The reaction mixture was cooled to ambient temperature and water (2 mL) was added. The resultant precipitate was collected by filtration and purified by flash column chromatography on silica (eluting with 5-10% MeOH in ethyl acetate) to give the title compound (30 mg, 34%) as a white solid. δΗ (d6- DMSO, 300 MHz) 8.74 (2H, s), 8.13 (1H, s), 7.74 (1H, d, J 1.3 Hz), 7.62 (1H, d, J 8.5 Hz), 7.47-7.43 (1H, m), 7.37-7.34 (2H, m), 7.25 (1H, d, J7.5 Hz), 7.18-7.11 (1H, m), 6.78-6.75 (1H, m), 5.53 (2H, s), 4.21 (2H, s), 3.95-3.92 (2H, m), 3.34-3.30 (2H, m), 3H not observed (CH3) under d6-DMSO peak at 2.50 ppm. LCMS (pH 3) 465.8, MH+, RT 1.38 minutes, 100% UV. LCMS (pH 10) 465.7, MH+, RT 1.69 minutes, 100% UV. EXAMPLE 511
1 -[2-(Difluoromethoxy)benzyl] -2 -methyl-6- {2-[4-(methylsulfonyl)piperazin- 1 -yl"|- pyrimidin-5-vU - lH-benzimidazole
To a solution of Intermediate 65 (50 mg, 0.125 mmol) in ethanol (2 mL) were added 1 -(methylsulfonyl)piperazine (22 mg, 0.125 mmol) and triethylamine (17 μί). The reaction mixture was stirred at 90°C for 18 h, before being cooled to ambient temperature. Water (2 mL) was added. The resultant precipitate was collected by filtration and purified by flash column chromatography (silica), eluting with 100% ethyl acetate to 3% methanol in ethyl acetate, to give the title compound (22 mg, 33%) as an off white solid. δΗ (dg-DMSO, 300 MHz) 8.72 (2H, s), 7.72 (1H, d, J 1.3 Hz), 7.65-7.51 (2H, m), 7.46- 7.35 (2H, m), 7.25 (1H, d, J 7.6 Hz), 7.18-7.11 (1H, m), 6.78-6.75 (lH, m), 5.53 (2H, s), 3.90 (4H, t, J 5.0 Hz), 3.19 (4H, t, J 5.0 Hz), 2.89 (3H, s), 3H not observed (CH3) under dg-DMSO peak at 2.50 ppm. LCMS (pH 3) 529.8, MH+, RT 1.67 minutes, 100% UV. LCMS (pH 10) 529.7, MH+, RT 2.15 minutes, 99.4% UV.
EXAMPLES 512 TO 518
The following compounds were synthesised from Intermediate 65 and the appropriate amine in accordance with Method S.
Example Compound Name LCMS RT Mass Ion
(3S)-1 -(5- { 1 -[2-(Difluoromemoxy)benzyl]-2-methyl-
512 lH-benzimidazol-6-yl}pyrimidin-2-yl)pyrrolidin-3- 1.30 452 ol
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
513 benzimidazol-6-yl}-N-(2-memoxyemyl)pyrimidin-2- 1.82 440 amine
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [2 -(2 -
514 oxa-6-azaspiro[3.3]hept-6-yl)pyrimidin-5-yl]-lH- 1.85 464 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [2 -(2 -
515 2.22 492 oxa-7-azaspiro[3.5]non-7-yl)pyrimidin-5-yl]-lH- benzimidazole
l-[2-(Difluoromethoxy)benzyl]-2-methyl-6-[2-(2-
516 oxa-6-azaspiro[3.4]oct-6-yl)pyrimidin-5-yl]-lH- 1.99 478 benzimidazole
l-[2-(Difluoromethoxy)benzyl]-2-methyl-6-[2-(2-
517 oxa-6-azaspiro[3.5]non-6-yl)pyrimidin-5-yl]-lH- 2.32 492 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [2 -
518 (thiomorpholin-4 -yl)pyrimidin-5 -yl] - 1 H- 2.03 468 benzimidazole
EXAMPLES 519 TO 522
These compounds can be synthesised from Intermediate 2 and the appropriate substituted aldehyde in accordance with Method C. Reagents containing hydroxy groups can be protected as tert-butyldimethylsilanyloxy derivatives and deprotection effected at a subsequent convenient stage by conventional means. The following compounds were prepared.
Figure imgf000231_0001
EXAMPLE 523
1 -[2-(Difluoromethoxy)benzyll -2 -methyl-6-(2 -methyl- lH-imidazol-1 -yl)- \H- benzimidazole
From Intermediate 57 by the method of Example 489 with 2-methylimidazole to give the title compound. LCMS 369 (M+H)+, RT 1.32 minutes. EXAMPLE 524
1 - [2-(Difluoromethoxy)benzyl] -6-(6-ethenylpyridin-3 -yl)-2-(methoxymethyl)- 1 H- benzimidazole
To a solution of Intermediate 59 (118 mg, 0.27 mmol) in isopropanol (6 mL) were added potassium vinyl trifiuoroborate (35 mg, 1.2 equiv.), triethylamine (40 μί, 1.1 equiv.) and PdCl2(dppf) (5%). The mixture was degassed and heated at reflux under nitrogen for 3 h. The mixture was then allowed to cool to room temperature. Water (5 mL) was added and the mixture was stirred for another 10 minutes. The reaction mixture was poured into ethyl acetate/water and the layers were separated. The organic layer was then washed three times with brine, dried over magnesium sulphate and concentrated in vacuo. The residue was purified by gradient silica column chromatography, eluting with 0-60% ethyl acetate in DCM, followed by preparative chromatography, to afford the title compound (20 mg, 17%) as a white solid. δΗ (400 MHz, CDC13) 8.77 (d, J 1.9 Hz, IH), 7.89 (d, J 8.3 Hz, IH), 7.83 (dd, J 8.1, 2.4 Hz, IH), 7.52 (dd, J 8.4, 1.7 Hz, IH), 7.39-7.42 (m, 2H), 7.25-7.35 (m, IH), 7.19-7.35 (m, IH), 7.11 (dt, J7.7, 1.1 Hz, IH), 6.76-6.89 (m, 2H), 6.64 (t, J 73.3 Hz, IH), 6.23 (d, J 17.5 Hz, IH), 5.61 (s, 2H), 5.50 (dd, J 10.8, 1.2 Hz, IH), 4.77 (s, 2H), 3.40 (s, 3H). LCMS (ES+) (M+H)+ 348, RT 2.06 minutes (Method 1); (M+H)+ 423, RT 2.30 minutes (Method 2).
EXAMPLES 525 TO 528
These compounds can be synthesized by a sequence of steps corresponding to the preparation of Intermediates 32, 33 and 34, followed by Method J, utilising 6-[4-(tert- butyloxycarbonyl)piperazin-l-yl]pyridin-3-ylboronic acid, the appropriate amine and the appropriate carboxylic acid. Removal of the BOC protecting group can be effected at a subsequent convenient stage by treatment with trifluoroacetic acid or hydrochloric acid. The following compounds were prepared.
Example Compound Name LCMS RT Mass Ion
{ 1 -[2-(Difluoromethoxy)benzyl] -6-[6-(piperazin-l -
525 1.25 466 yl)pyridin-3 -yl] - lH-benzimidazol-2-yl } methanol l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
526 (methoxymethyl)-6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - 1.32 470
IH-benzimidazole
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
527 [(difluoromethoxy)methyl]-6-[6-(piperazin-l-yl)- 1.40 506 pyridin-3 -yl] H-benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -6 - [6 -(piperazin- 1 -
528 yl)pyridin-3-yl]-2-[(2,2,2-trifluoroethoxy)methyl]- 1.48 548 lH-benzimidazole
EXAMPLE 529 l-(Bicvclor4.2.01octa-l(6 .2^-trien-7-vn-2-r(pyridin-4-ylmethoxy methyl1-lH- benzimidazole dihydrochloride
From Intermediate 66 and 4-(bromomethyl)pyridine hydrobromide in accordance with Method D to give the title compound. δΗ (300 MHz, DMSO-d6) 8.80 (d, 2H, J 6.1 Hz), 7.81 (d, 2H, J5.6 Hz), 7.75 (d, 2H, J 8.2 Hz), 7.51 (m, 1H), 7.31 (m, 3H), 7.18 (m, 2H), 6.78 (d, 1H, J 8.0 Hz), 6.42 (m, 1H), 5.15 (m, 2H), 4.91 (m, 2H), 3.90 (m, 1H), 3.60 (m, 1H). LCMS (ES+) 342 (M+H)+, RT 2.29 minutes (Method 2).
EXAMPLE 530
[ 1 -(Bicyclo[4.2.0"|octa- 1 (6),2,4-trien-7-yl)- lH-benzimidazol-2-yl](pyridin-4-yl)methanol From Intermediate 67 and 4-pyridinecarboxaldehyde in accordance with Method
C to give the title compound. δΗ (300 MHz, DMSO-d6) 8.58 (d, 2H, J 6.0 Hz), 7.64 (d, 1H, J2.9 Hz), 7.45 (m, 4H), 7.16 (m, 2H), 6.91 (m, 2H), 6.62 (m, 1H), 6.41 (m, 1H), 6.26 (m, 2H), 3.75 (m, 1H), 3.21 (m, 1H). LCMS (ES+) 328 (M+H)+, RT 2.09 minutes (Method 2).
EXAMPLE 531 l-(l-Cyclopentylethyl)-6-(6-methoxypyridin-3-yl)-2-methyl-lH-benzimidazole
Synthesized by a sequence of steps corresponding to the preparation of
Intermediates 33 and 34, followed by Method J, utilizing 1-cyclopentylethylamine and acetic acid, to give the title compound. LCMS m/z 336 (M+H) , RT 2.47 minutes (Method 6).
EXAMPLE 532 l- (r2-(Difluoromethoxy)phenyl1methyl|-2-methyl-6-r4-methyl-2-(piperidin-4-yl)- pyrimidin-5 -yl]benzimidazole
To a solution of Intermediate 71 (0.13 g, 0.24 mmol) in methanol (5 mL) was added 4M HC1 in 1,4-dioxane (5 mL). The reaction mixture was stirred at room temperature for 18 h, after which time the reaction mixture was basified by the addition of 10% aqueous NaOH solution. Methanol was evaporated off under vacuum and the remaining aqueous solution was extracted with ethyl acetate (4 x 50 mL). The combined organic layers were dried (Na2S04), filtered and concentrated in vacuo. The crude residue was purified by chromatography (Si02; 2%/18%/80%-4%/36%/60% NH3/MeOH/ DCM), and the resulting solid material was freeze-dried from acetonitrile/water/methanol, to give the title compound (0.062 g, 56%) as a white solid. δΗ (DMSO-d6, 300 MHz) 8.49 (s, 1H), 7.65 (d, 1H, J 8.2 Hz), 7.51 (d, 1H, J 1.1 Hz), 7.34-7.41 (m, 1H), 7.31 (t, 1H, J 73.9 Hz), 7.13-7.27 (m, 3H), 6.83 (dd, 1H, J7.5, 1.4 Hz), 5.51 (s, 2H), 2.98-3.08 (m, 2H), 2.80-2.92 (m, 1H), 2.55-2.66 (m, 2H), 2.52 (s, 3H), 2.36 (s, 3H), 1.78-1.89 (m, 2H), 1.64- 1.76 (m, 2H). LCMS (ES+) 464 (M+H)+, RT 1.91 minutes (pH 10); and (ES+) 464 (M+H)+, RT 1.11 minutes (pH 3).
EXAMPLE 533 l-( r2-(Difluoromethoxy)phenyl1methyl| -2-methyl-6- (4-methyl-2-r 1 -(methylsulfonvD- piperidin-4-yllpyrimidin-5-yl|benzimidazole
To a solution of Example 532 (0.048 g, 0.10 mmol) in DCM (2 mL) were added triethylamine (22 μί, 0.16 mmol) and methanesulfonyl chloride (8.8 μί, 0.11 mmol). The reaction mixture was stirred at room temperature for 1.5 h. The reaction mixture was washed with brine (2 mL). The organic layer was separated by passing through a phase separator, then concentrated in vacuo. The resulting solid was freeze-dried from acetonitrile/water. The resulting pale yellow solid was purified by chromatography (Si02; 0-18% MeOH/DCM gradient elution), then further purified by preparative HPLC, to provide the title compound (0.022 g, 39%) as a white solid. δΗ (DMSO-d6, 300 MHz) 8.53 (s, IH), 7.66 (d, 1H, J 8.3 Hz), 7.52 (d, 1H, J 1.2 Hz), 7.34-7.41 (m, IH), 7.32 (t, IH, J 73.8 Hz), 7.20-7.27 (m, 2H), 7.16 (td, 1H, J7.6, 1.1 Hz), 6.83 (dd, 1H, J 7.6, 1.3 Hz), 5.51 (s, 2H), 3.61-3.70 (m, 2H), 2.82-3.01 (m, 6H), 2.53 (s, 3H), 2.38 (s, 3H), 2.04-2.15 (m, 2H), 1.74-1.90 (m, 2H). LCMS (ES+) 542 (M+H)+, RT 2.07 minutes (pH 10); and (ES+) 542 (M+H)+, RT 1.71 minutes (pH 3).
EXAMPLE 534 2-r5-(l-(r2-(Difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)-4-methyl- pyrimidin-2-yl"|acetamide
To a solution of Intermediate 69 (0.1 g, 0.25 mmol) in EtOH (3 mL) was added sodium ethoxide (0.025 g, 0.38 mmol). The mixture was stirred for 10 minutes, followed by the addition of 3-amino-3-iminopropanamide hydrochloride (0.057 g, 0.53 mmol). The reaction mixture was heated at 80°C for 16 h. The reaction mixture was concentrated in vacuo, then the residue was diluted with water (3 mL) and extracted with ethyl acetate. The resulting solution was dried over anhydrous Na2S04, filtered and concentrated in vacuo to give, after purification by preparative HPLC, the title compound (20 mg). 5H (400 MHz, CDC13) 7.70 (d, J 8.2 Hz, IH), 7.50 (s, IH), 7.31 (t, J 7.8 Hz, IH), 7.17 (d, J 8.2 Hz, IH), 7.14-7.00 (m, 3H), 6.67 (d, J 7.7 Hz, IH), 6.63 (s, 2H), 6.46 (s, 2H), 5.78 (br s, IH), 5.37 (s, 2H), 2.58 (s, 3H), 2.26 (s, 3H). LCMS mlz 438, RT 1.83 minutes.
EXAMPLE 535 2-r5-(l-(r2-(Difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)-4-methyl- pyrimidin-2-yl"|propan-2-ol
To a solution of Intermediate 69 (0.20 g, 0.50 mmol) in MeOH (3 mL) was added K2C03 (0.20 g, 1.51 mmol). The mixture was stirred for 10 minutes, followed by the addition of 2-hydroxy-2-methylpropanamidine (0.108 g, 1.1 mmol). The reaction mixture was heated at 70°C for 16 h. The volatiles were removed in vacuo, then the residue was diluted with water (5 mL) and extracted with ethyl acetate (3 x 10 mL). The combined organic layers were dried over anhydrous Na2S04, filtered and concentrated in vacuo to give, after purification by preparative HPLC, the title compound (48 mg). δΗ (400 MHz, CDC13) 8.49 (s, 1H), 7.81 (d, J 8.2 Hz, 1H), 7.38-7.28 (m, 1H), 7.19 (ddd, J 8.0, 6.3, 1.5 Hz, 2H), 7.14-7.06 (m, 2H), 6.71-6.64 (m, 1H), 6.63 (s, 1H), 5.41 (s, 2H), 4.91 (br s, 1H), 2.62 (s, 3H), 2.44 (s, 3H), 1.61 (s, 6H). LCMS mlz 439, RT 2.10 minutes.
EXAMPLE 536 l-{[2-(Difluoromethoxy)phenyllmethyl|-6-(2-ethyl-4-methylpyrimidin-5-yl)-2 -methyl - benzimidazole
To a solution of Intermediate 69 (0.2 g, 0.50 mmol) in MeOH (3 mL) was added K2C03 (0.21 g, 1.50 mmol). The mixture was stirred for 10 minutes, followed by the addition of propionamidine hydrochloride (0.12 g, 1.06 mmol). The reaction mixture was heated at 70°C for 16 h. The reaction mixture was concentrated in vacuo, then the residue was diluted with water (3 mL) and extracted with ethyl acetate. The resulting solution was dried over anhydrous Na2S04, filtered and concentrated in vacuo to give, after purification by preparative HPLC, the title compound (48 mg). 5H (400 MHz, CDCI3) 8.43 (s, 1H), 7.80 (d, J 8.2 Hz, 1H), 7.39-7.29 (m, 1H), 7.24-7.14 (m, 2H), 7.13-6.99 (m, 2H), 6.68 (d, J 7.7 Hz, 1H), 6.63 (s, 1H), 5.40 (s, 2H), 2.97 (q, J7.6 Hz, 2H), 2.62 (s, 3H), 2.41 (s, 3H), 1.38 (t, J 7.6 Hz, 3H). LCMS mlz 409, RT 2.14 minutes.
EXAMPLE 537 l-([2-(Difluoromethoxy)phenyllmethyl|-2-methyl-6-[4-methyl-2-(tetrahydropyran-4-yl)- pyrimidin-5 -yllbenzimidazole
To a solution of Intermediate 69 (0.2 g, 0.50 mmol) in MeOH (3 mL) was added K2C03 (0.21 g, 1.50 mmol). The mixture was stirred for 10 minutes, followed by the addition of tetrahydro-2H-pyran-4-carboxamidine hydrochloride (0.174 g, 1.063 mmol). The reaction mixture was heated at 70°C for 16 h. The reaction mixture was concentrated in vacuo, then the residue was diluted with water (3 mL) and extracted with ethyl acetate. The resulting solution was dried over anhydrous Na2S04, filtered and concentrated in vacuo to give, after purification by preparative HPLC, the title compound (27 mg). 5H (400 MHz, CDCI3) 8.45 (s, 1H), 7.80 (d, J 8.3 Hz, 1H), 7.40-7.28 (m, 1H), 7.24-7.15 (m, 1H), 7.14-7.06 (m, 2H), 6.71-6.65 (m, 2H), 6.63 (s, 1H), 5.41 (s, 2H), 4.10 (ddd, J 11.7, 4.3, 2.0 Hz, 2H), 3.57 (td, J 11.6, 2.4 Hz, 2H), 3.11 (tt, J 11.4, 4.1 Hz, 1H), 2.62 (s, 3H), 2.41 (s, 3H), 2.12-1.90 (m, 4H). LCMS mlz 465, RT 2.11 minutes.
EXAMPLE 538
6-(2-Cvclobutyl-4-methylpyrimidin-5-yl
methylbenzimidazole
To a solution of Intermediate 69 (0.2 g, 0.50 mmol) in MeOH (3 mL) was added K2C03 (0.207 g, 1.50 mmol). The mixture was stirred for 10 minutes, followed by the addition of cyclobutanecarboxamidine hydrochloride (0.14 g, 1.06 mmol). The reaction mixture was heated at 70°C for 16 h. The reaction mixture was concentrated in vacuo, then the residue was diluted with water (3 mL) and extracted with ethyl acetate. The resulting solution was dried over anhydrous Na2S04, filtered and concentrated in vacuo to give, after purification by preparative HPLC, the title compound (67 mg). δΗ (400 MHz, CD3OD) 8.45 (s, 1H), 7.70 (d, J 8.3 Hz, 1H), 7.41-7.32 (m, 2H), 7.24 (td, J 5.6, 2.9 Hz, 2H), 7.17 (t, J 7.6 Hz, 1H), 7.00-6.90 (m, 2H), 5.56 (s, 2H), 3.80 (m, J 8.7 Hz, 1H), 2.63 (s, 3H), 2.58-2.30 (m, 7H), 2.21-1.88 (m, 2H). LCMS mlz 435, RT 2.48 minutes.
EXAMPLE 539
6- [2-(Cyclopropylmethyl)-4-methylpyrimidin-5 -yl] - 1 - ( [2-(difluoromethoxy)phenyll - methyl) -2 -methylbenzimidazole
To a solution of Intermediate 69 (0.2 g, 0.50 mmol) in MeOH (3 mL) was added K2C03 (0.21 g, 1.50 mmol). The mixture was stirred for 10 minutes, followed by the addition of 2-(cyclopropyl)acetamidine hydrochloride (0.14 g, 1.06 mmol). The reaction mixture was heated at 70°C for 16 h. The reaction mixture was concentrated in vacuo, then the residue was diluted with water (3 mL) and extracted with ethyl acetate. The resulting solution was dried over anhydrous Na2S04, filtered and concentrated in vacuo to give, after purification by preparative HPLC, the title compound (14 mg). δΗ (400 MHz, CD3OD) 8.45 (s, 1H), 7.71 (d, J 8.3 Hz, 1H), 7.37 (q, J7.4, 5.8 Hz, 2H), 7.29-7.20 (m, 2H), 7.17 (t, J 7.6 Hz, 1H), 6.96 (d, J7.7 Hz, 1H), 6.93 (s, 1H), 5.56 (s, 2H), 2.80 (d, J 7.0 Hz, 2H), 2.63 (s, 3H), 2.40 (s, 3H), 1.23 (ddt, J 10.4, 7.6, 4.5 Hz, 1H), 0.59-0.45 (m, 2H), 0.30 (m, J 4.6 Hz, 2H). LCMS mlz 435, RT 2.33 minutes. EXAMPLE 540
1 - [5 -( 1 - ( [2-(Difluoromethoxy)phenyllmethyl| -2-methylbenzimidazol-6-yl)-4-methyl- pyrimidin-2-vHethanol
To a solution of Intermediate 69 (0.2 g, 0.50 mmol) in EtOH (3 mL) was added potassium tert-butoxide (0.11 g, 1.00 mmol). The mixture was stirred for 10 minutes, followed by the addition of 2-hydroxypropionamidine hydrochloride (0.13 g, 1.06 mmol). The reaction mixture was heated at 80°C for 16 h. The reaction mixture was concentrated in vacuo, then the residue was diluted with water (3 mL) and extracted with ethyl acetate. The resulting solution was dried over anhydrous Na2S04, filtered and concentrated in vacuo to give, after purification by preparative HPLC, the title compound (5 mg). 5H (400 MHz, CD3OD) 8.51 (d, J 1.8 Hz, IH), 7.71 (dd, J 8.2, 1.7 Hz, IH), 7.36 (d, J 8.9 Hz, 2H), 7.30-7.19 (m, 2H), 7.17 (t, J 7.6 Hz, IH), 6.99-6.90 (m, 2H), 5.56 (s, 2H), 4.10 (m, IH), 2.64 (d, J 1.7 Hz, 3H), 2.42 (d, J 1.6 Hz, 3H), 1.54 (dd, J 6.6, 1.7 Hz, 3H). LCMS mlz 425, RT 1.90 minutes.
EXAMPLES 541 & 542 Sodium (ϋ?,56 -3-Γ5-(1 - (r2-(difluoromethoxy)phenyl1methyl| -5-fluoro-2-methyl- benzimidazol-6-yl)pyrimidin-2-yl"|bicyclo[3.1.0]hexane-6-carboxylate
Aqueous sodium hydroxide solution (equivalent to 10.5 mg, 0.26 mmol) was added to a solution of Intermediate 74 (0.14 g, 0.26 mmol) in THF-MeOH-water (1 : 1 : 1; 6 mL) and stirred overnight. The reaction mixture was stirred at 60°C for 4 h, then at 70°C for 3h. The reaction mixture was concentrated, diluted with water, and filtered through celite to remove turbidity. The resulting clear colourless aqueous solution was freeze- dried to give a white lyophilised solid (90 mg, 70%) consisting of two stereoisomers that were separated by preparative HPLC.
Isomer A (22 mg, 37%) was obtained as a white lyophilised solid. δΗ (300 MHz, DMSO-dg) 8.88 (d, J 1.7 Hz, 2H), 7.76 (d, J 6.9 Hz, IH), 7.57 (m, IH), 7.37 (m, IH),
7.32 (t, J72, 76 Hz, IH), 7.26 (m, IH), 7.16 (m, IH), 6.79 (m, IH), 5.54 (s, 2H), 3.14 (m, IH), 2.50 (s, 3H), 2.21 (m, 4H), 1.86 (s, 2H), 1.63 (t, J2.8 Hz, IH). LCMS (pH 10) MH+ 509, RT 1.44 minutes. Isomer B (17 mg, 28%) was obtained as a white lyophilised solid δΗ (300 MHz, DMSO-d6) 8.88 (d, J 1.5 Hz, 2H), 7.77 (m, 1H), 7.56 (m, 1H), 7.38 (m, 1H), 7.32 (t, J72, 76 Hz, 1H), 7.26 (m, 1H), 7.16 (m, 1H), 6.80 (dd, J 7.7, 0.8 Hz, 1H), 5.55 (s, 2H), 3.15 (m, 1H), 2.50 (s, 3H), 2.26 (m, 2H), 2.17 (m, 2H), 1.87 (m, 2H), 1.64 (t, J2.8 Hz, 1H). LCMS (pH 10) MH+ 509, RT 1.84 minutes.
EXAMPLE 543
4-r5-(l-(r5-Chloro-2-(difluoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol- 6-yl)pyrimidin-2-yl"|cvclohex-3-ene- 1 -carboxylic acid
2M Sodium hydroxide solution (0.350 mL, 0.70 mmol) was added to a solution of Intermediate 76 (200 mg, 0.35 mmol) in THF-MeOH-water (1 :1 : 1; 6 mL) and stirred over 3 days at r.t. The reaction mixture was concentrated, then ice-water was added and neutralised using acetic acid. The solid was filtered, washed with water and dried by suction. A fraction was purified by HPLC to give the title compound (12 mg, 6%>) as a white solid. δΗ (400 MHz, DMSO-d6) 8.94 (d, J 1.7 Hz, 2H), 7.82 (m, 1H), 7.58 (m, 1H), 7.47 (dd, J 8.8, 2.6 Hz, 1H), 7.32 (t, J 72, 76 Hz, 1H), 7.29 (m, 2H), 6.86 (m, 1H), 5.54 (s, 2H), 2.75 (m, 1H), 2.50 (s, 3H), 2.45 (m, 4H), 2.10 (m, 1H), 1.70 (m, 1H). LCMS (pH 10) MH+ 543, RT 2.19 minutes.
EXAMPLE 544
4-r5-(l-(r5-Chloro-2-(difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-vHcvclohex-3-ene-l -carboxylic acid
2M Sodium hydroxide solution (0.375 mL, 0.75 mmol) was added to a solution of
Intermediate 77 (200 mg, 0.36 mmol) in THF-MeOH-water (1 : 1 : 1; 6 mL) and stirred for 3 days at r.t. The reaction mixture was concentrated under reduced pressure, then ice- water was added and neutralised using acetic acid. The resulting solid was filtered, washed with cold water and dried by suction, to give the title compound (0.2 g, 100%) as an off-white solid. δΗ (400 MHz, DMSO-d6) 12.2 (br, 1H, COOH), 9.09 (s, 2H), 7.96 (d, J 1.1 Hz, 1H), 7.70 (m, 1H), 7.63 (dd, J 8.4, 1.5 Hz, 1H), 7.48 (dd, J 8.8, 2.6 Hz, 1H), 7.35 (t, J72, 76 Hz, 1H), 7.33 (m, 1H), 7.26 (m, 1H), 6.83 (d, J2.5 Hz, 1H), 5.56 (s, 2H), 2.77 (m, 1H), 2.50 (s, 3H), 2.49 (m, 4H), 2.11 (m, 1H), 1.72 (m, 1H). LCMS (pH 10) MH+ 526, RT 1.32 minutes.
EXAMPLE 545
Sodium 4-r5-(l- (r2-(difluoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol-6- yl)pyrimidin-2-yl"|cyclohexanecarboxylate
Intermediate 79 (0.1 g, 0.186 mmol) was dissolved in MeOH (5 mL) and sodium methoxide (2 equivalents) in methanol was added. The clear solution was stirred at 60°C overnight, then left stirring at the same temperature for a further 24 h. Water (1 mL) was added and stirred at the same temperature for 1 h. The reaction mixture was concentrated and freeze-dried. The white lyophilised solid was dissolved in water, then loaded onto a Ci8 column and eluted with water, 10%, 20% and finally 30%> MeOH. The pure fractions were concentrated and freeze-dried to give the title compound (61 mg, 60%>) as a white lyophilised solid. The ratio of the two isomers was 3 : 1. δΗ (400 MHz, DMSO-d6) 8.88 (m, 2H), 7.78 (m, 1H), 7.57 (m, 1H), 7.38 (m, 1H), 7.26 (m, 1H), 7.32 (t, J 72, 76 Hz, 1H), 7.16 (m, 1H), 6.79 (m, 1H), 5.55 (s, 2H), 2.77 (m, 1H), 2.50 (s, 3H), 2.07 (m, 1H), 1.94 (m, 3H), 1.83 (m, 1H), 1.56 (m, 2H), 1.39 (m, 2H). LCMS (pH 10) MH+ 511, RT 1.72 minutes (major isomer) and RT 2.01 minutes (minor isomer).
EXAMPLE 546
Sodium 4-r5-(l- (r2-(difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-vHcvclohexanecarboxylate
Intermediate 81 (130 mg, 0.257 mmol) was dissolved in MeOH (2 mL) and sodium methoxide (2 equivalents) was added and stirred at 70°C for 44 h. The reaction mixture was concentrated to remove MeOH, diluted with water and washed with diethyl ether. The aqueous layer was freeze-dried. The lyophilised solid was dissolved in water and applied to RP column chromatography (40% MeOH). The isolated clean material was concentrated and freeze-dried to give the title compound (98 mg, 74%) as a white lyophilised solid. δΗ (400 MHz, DMSO-d6) 8.99 (m, 2H), 7.88 (d, J 0.8 Hz, 1H), 7.69 (m, 1H), 7.56 (m, 1H), 7.38 (m, 1H), 7.35 (t, J 72, 76 Hz, 1H), 7.27 (m, 1H), 7.16 (m, 1H), 6.79 (d, J 7.1 Hz, 1H), 5.56 (s, 2H), 2.78 (m, 1H), 2.50 (s, 3H), 1.98 (m, 4H), 1.82 (m, 1H), 1.57 (m, 2H), 1.40 (m, 2H). LCMS (pH 10) MH+ 493, RT 1.58 and 1.94 minutes.
EXAMPLE 547
Sodium (\S,6R)-3-\5-(l - (r2-(difluoromethoxy)phenyl1methyl| -2-methylbenzimidazol-6- yllpyrimidin-2-yl"|-3-azabicyclo[4.1.0]heptane- 1 -carboxylate
A mixture of Intermediate 82 (134 mg, 0.25 mmol) and sodium hydroxide (10 mg, 0.25 mmol) in THF-MeOH-water (1 : 1 : 1 ; 6 mL) was stirred at 60°C for 2 h. The reaction mixture was concentrated, diluted with water, and washed with diethyl ether. The aqueous layer was freeze-dried to give the title compound (0.135 g, 98%) as a white lyophilised solid. δΗ (400 MHz, DMSO-d6) 8.35 (s, 2H), 7.42 (s, 1H), 7.35 (m, 1H), 7.15 (m, 2H), 7.10 (t, J72, 76 Hz, 1H), 7.01 (d, J 8.1 Hz, 1H), 6.92 (m, 1H), 6.54 (m, 1H), 5.27 (m, 2H), 3.96 (m, 2H), 3.40 (m, 1H), 3.05 (m, 1H), 2.5 (s, 3H), 1.72 (m, 1H), 1.47 (m, 1H), 1.12 (m, 1H), 0.67 (m, 1H), -0.04 (m, 1H). LCMS (pH 10) MH+ 506, RT 1.17 minutes.
EXAMPLE 548 Sodium (li?,5i?)-3-r5-ri-rr2-(difluoromethoxy)phenyl1methyl1-2-methylbenzimidazol-6- yllpyrimidin-2-yll-3-azabicyclo[3.1.01hexane-l -carboxylate
Intermediate 83 (0.24 g, 0.47 mmol) was dissolved in THF-MeOH-water (1 : 1 : 1; 4 mL), sodium hydroxide (21 mg, 0.47 mmol) was added and the mixture was stirred at 70°C for 2 h. The clear solution was concentrated, diluted with water and washed with EtOAc. The aqueous layer was freeze-dried to give the title compound (0.23 g, 95%) as a white solid. δΗ (400 MHz, DMSO-d6) 8.61 (s, 2H), 7.66 (s, 1H), 7.60 (m, 1H), 7.38 (m, 2H), 7.35 (t, J 74 Hz, 1H), 7.27 (d, J 8.1 Hz, 1H), 7.16 (m, 1H), 6.80 (d, J7.5 Hz, 1H), 5.52 (s, 2H), 3.87 (m, 1H), 3.74 (m, 2H), 3.52 (dd, J l l .l, 4.4 Hz, 1H), 2.50 (s, 3H), 1.68 (m, 1H), 1.31 (m, 1H), 0.33 (m, 1H). LCMS (pH 10) MH+ 492, RT 1.53 minutes. EXAMPLE 549
(li?,56',8r)-3-[5-(l-([2-(difluoromethoxy)phenyllmethyl|-5-fluoro-2-methyl- benzimidazol-6-yl)pyrimidin-2-yll-3-azabicyclo[3.2.1 ]octane-8-carboxylic acid
Intermediate 86 (365 mg, 0.66 mmol) was dissolved in THF (10 mL) and water (5 mL). Lithium hydroxide monohydrate (111 mg, 2.65 mmol) was added and the mixture was stirred at r.t. for 6 h. The mixture was partitioned between water (50 mL) and EtOAc (50 mL) and the phases were separated. The aqueous layer was acidified to pH 3-4 with 2M HC1. A precipitate formed and was filtered, to afford the title compound (182 mg, 51%) as an off-white solid. δΗ (300 MHz, d6-DMSO) 12.20 (1H, s), 8.50 (2H, d, J 1.7 Hz), 7.61-7.56 (1H, m), 7.48 (1H, d, J 11.3 Hz), 7.41-7.34 (1H, m), 7.32 (1H, t, J 73.9 Hz), 7.27-7.22 (1H, m), 7.18-7.13 (1H, m), 6.81-8.78 (1H, s), 5.51 (2H, s), 4.45-4.40 (2H, m), 3.28 (3H, s), 3.03-2.99 (2H, m), 2.66 (1H, s), 2.59 (2H, br s), 1.71-1.66 (2H, m), 1.42- 1.36 (2H, m). LCMS (pH 10): MH+ mlz 538, RT 1.98 minutes (100%). LCMS (pH 3): MH+ mlz 538, RT 2.14 minutes (100%).
EXAMPLE 550 l-r5-(l-(r2-Chloro-6-(difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-vH -4-methylpiperidine-4-carboxylic acid
To Intermediate 90 (258 mg, 0.642 mmol) was added [l,l '-bis(diphenyl- phosphino)ferrocene]dichloropalladium(II) (45.5 mg, 0.062 mmol) in a microwave vial and the reaction mixture was degassed under three cycles of vacuum and nitrogen. To the dry reaction materials were added 2M aqueous potassium carbonate solution (0.63 mL, 1.26 mmol) and Intermediate 89 (269 mg, 0.68 mmol) dissolved in THF (4 mL). The reaction mixture was degassed under three cycles of vacuum and nitrogen and was heated under microwave irradiation at 100°C for 3 h. The reaction mixture was cooled to r.t. and left to stand overnight. The reaction mixture was partitioned between water (5 mL) and DCM (5 mL) and was filtered through a phase separation cartridge. The solution was concentrated in vacuo. The resulting material was purified by flash column
chromatography on silica, using 50% EtOAc/isohexane to 100% EtOAc. To the resulting brown-coloured oil (187 mg, 0.328 mmol, 51%) were added THF (4 mL), water (1 mL) and lithium hydroxide monohydrate (66.5 mg, 1.585 mmol). The mixture was stirred at r.t. for 3 days. The reaction mixture was heated at 80°C for 3 h. THF (4 mL) was added and the mixture was heated at 70°C overnight. MeOH (1 mL) was added and the reaction mixture was heated at 70°C for 3 h. The reaction mixture was cooled to r.t. and then acidified to pH ~3 using 2M aqueous hydrochloric acid. The mixture was partitioned between EtOAc (20 mL) and water (20 mL). The aqueous layer was removed and the organic layer was washed with water (20 mL). The organic layer was separated, dried (Na2S04), and filtered under reduced pressure. The solvent was removed in vacuo to yield a brown oil. The reaction mixture was purified by preparative HPLC to afford the title compound (40.9 mg, 23%) as a white solid which was freeze-dried from water/ acetonitrile overnight. δΗ (300 MHz, DMSO-d6) 8.49 (s, 2H), 7.60-7.01 (m, 7H), 5.58 (s, 2H), 4.26 (br d, J 13.4 Hz, 2H), 3.36-3.22 (m, 2H), 2.59 (s, 3H), 2.01 (br d, J 12.5 Hz, 2H), 1.39-1.24 (m, 2H), 1.16 (s, 3H). LCMS (pH 3): MH+ miz 543, RT 1.80 minutes (94%). LCMS (pH 10): MH+ miz 543, RT 1.99 minutes (97.8%). EXAMPLE 551
1 - [5 -( 1 - ( [2-(Difluoromethoxy)phenyllmethyl| -2-methylbenzimidazol-6-yl)pyrimidin-2- yll-4-methylpiperidine-4-carboxylic acid
Prepared from Intermediate 47 and Intermediate 89 according to the procedure described for Example 550 to afford the title compound (57 mg) as a white solid. δΗ (300 MHz, DMSO-dg) 8.64 (s, 2H), 7.67 (s, 1H), 7.59 (s, 1H), 7.41 (dd, J 8.4, 1.2 Hz, 1H), 7.38-7.32 (m, 1H), 7.36 (t, J 82.3 Hz, 1H), 7.26 (d, J 8.0 Hz, 1H), 7.15 (t, J 7.6 Hz, 1H), 6.79 (d, J7.1 Hz, 1H), 5.52 (s, 2H), 4.24 (dt, J 14.0, 4.3 Hz, 2H), 3.36-3.24 (m, 2H), 2.49 (s, under DMSO peak, 3H), 2.05-1.94 (m, 2H), 1.42-1.29 (m, 2H), 1.16 (s, 3H). LCMS (pH 3): MH+ miz 509, RT 1.64 minutes (100%). LCMS (pH 10): MH+ miz 509, RT 1.27 minutes (100%).
EXAMPLE 552
4-Methyl- 1 -[5-(2-methyl- 1 - ([2-methyl-5-(trifluoromethyl)thiazol-4-yllmethyl| - benzimidazol-6-yl)pyrimidin-2-yllpiperidine-4-carboxylic acid
Prepared from Intermediate 91 and Intermediate 89 according to the procedure described for Example 550 to afford the title compound (30 mg) as a white solid. δΗ (300 MHz, DMSO-dg) 12.35 (br s, IH), 8.58 (s, 2H), 7.56 (d, J 1.3 Hz, IH), 7.51 (d, J 8.4 Hz, IH), 7.34 (dd, J 8.2, 1.7 Hz, IH), 5.58 (s, 2H), 4.25-4.14 (m, 2H), 3.30-3.19 (m, 2H under water peak), 2.51 (d, J 0.7 Hz, 3H), 2.48 (s, 3H), 1.99-1.88 (m, 2H), 1.36-1.24 (m, 2H), 1.11 (s, 3H). LCMS (pH 3): MH+ mlz 532, RT 2.02 minutes (94%). LCMS (pH 10): MH+ mlz 532, RT 2.06 minutes (94%).
EXAMPLE 553
(16,,5i?)-3-r5-(l-(r5-Chloro-2-(difluoromethoxy)phenyl1methyl|-5-fluoro-2-methyl- benzimidazol-6-yl)pyrimidin-2-yl1-3-azabicvclor3.2.1 loctane-8-carboxylic acid
To a stirred solution of Intermediate 92 (487 mg, 0.83 mmol) in THF (20 mL) was added lithium hydroxide monohydrate (144 mg, 3.4318 mmol) in water (8 mL) and the reaction mixture was stirred at r.t. for 18 h. The reaction mixture was acidified with 2M aqueous HC1 solution, diluted with water (10 mL), and extracted with EtOAc (7 x 25 mL). The combined organic layer was washed with brine (100 mL), dried (Na2S04), filtered and concentrated in vacuo. The crude material was purified by column chromatography (Si02, 0-100% MeOH in DCM), and the resulting material was freeze- dried from acetonitrile/water, to give the title compound (105 mg, 22%) as an off- white solid. 5H (DMSO-d6) 12.03-12.61 (m, IH), 8.51 (d, 2H, J 1.7 Hz), 7.64 (d, IH, J 7.0 Hz), 7.49 (d, IH, J 11.2 Hz), 7.47 (dd, IH, J 8.8, 2.8 Hz), 7.32 (t, IH, J 73.4 Hz), 7.29 (d, IH, J 8.8 Hz), 6.83 (d, 1H, J2.6 Hz), 5.51 (s, 2H), 4.43 (dd, 2H, J 12.9, 3.2 Hz), 3.01 (d, 2H, J 12.1 Hz), 2.56-2.65 (m, 3H), 2.48-2.53 (m, 3H) (CH3 group under DMSO peak), 1.65- 1.74 (m, 2H), 1.33-1.43 (m, 2H). LCMS (ES+) 573 (M+H)+, RT 1.80 minutes. EXAMPLE 554
4-[5-(l-([2-(Difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)-4-methyl- pyridin-2-vHthiomorpholine
Intermediate 93 (840 mg, 2.03 mmol), triethylamine (0.57 mL, 4.06 mmol) and thiomorpholine (0.62 mL, 6.09 mmol) were dissolved in NMP (2.5 mL) and heated under microwave irradiation for 3 h at 200°C. The reaction mixture was diluted with water and extracted with ethyl acetate. The combined organic phase was washed with brine, dried over sodium sulphate, concentrated and reduced in vacuo. The crude material was purified by flash column chromatography (Biotage SNAP 50g), eluting with 0-100% DCM/MeOH/NH3 (9/1/0.1 v/v/v) in DCM. Further purification by preparative HPLC yielded the title compound (205 mg, 21%). δΗ (400 MHz, DMSO-d6) 7.91 (s, IH), 7.59 (d, J 8.2 Hz, IH), 7.38 (t, J 7.4 Hz, IH), 7.32 (t, J 74.0 Hz, IH), 7.31 (s, IH), 7.26 (d, J 8.1 Hz, IH), 7.17 (t, J7.6 Hz, IH), 7.11 (dd, J 8.2, 1.1 Hz, IH), 6.84 (d, J 7.3 Hz, IH), 6.76 (s, IH), 5.49 (s, 2H), 3.92 (m, 4H), 2.60 (m, 4H), 2.53 (s, 3H), 2.13 (s, 3H). LCMS (pH 3) MH+ mlz 481.8, RT 1.52 minutes. LCMS (pH 10) MH+ mlz 481.8, RT 2.33 minutes. EXAMPLE 555
4-[5-(l-([2-(Difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)-4-methyl- pyridin-2- yll - 1 ,4-thiazinane 1 -oxide
Example 554 (425 mg, 0.88 mmol) was dissolved in DCM (10 mL) and cooled to 0°C. 3-Chloroperoxybenzoic acid (228 mg, 1.32 mmol) was added and the reaction mixture was stirred for 90 minutes prior to quenching with a 5% sodium metabisulphite solution. The aqueous layer was extracted with DCM. The combined organic phase was washed with aqueous sodium bicarbonate solution, dried over sodium sulphate, filtered and concentrated in vacuo. Purification by flash column chromatography (Biotage SNAP 50 g, Isolera), eluting with 0-50% DCM/MeOH/NH3 (9/1/0.1 v/v/v) in DCM, and subsequent concentration in vacuo, yielded the title compound (160 mg, 36%>). 5H (400 MHz, DMSO-dg) 7.95 (s, IH), 7.59 (d, J 8.3 Hz, IH), 7.38 (t, J7.7 Hz, IH), 7.32 (t, J 73.9 Hz, IH), 7.31 (s, IH), 7.26 (d, J 8.1 Hz, IH), 7.17 (t, J 7.7 Hz, IH), 7.12 (d, J 8.2 Hz, IH), 6.91 (s, IH), 6.85 (d, J7.5 Hz, IH), 5.58 (s, 2H), 4.13 (m, 2H), 3.95 (m, 2H), 2.88 (m, 2H), 2.65 (m, 2H), 2.54 (s, 3H), 2.15 (s, 3H). LCMS (pH 3) MH+ mlz 497.6, RT 1.22 minutes. LCMS (pHIO) MH+ mlz 497.8, RT 1.88 minutes.
EXAMPLE 556 4-[5-(l-([2-(Difluoromethoxy)phenyllmethyl|-2-methylbenzimidazol-6-yl)-4-methyl- pyridin-2-yl"|piperazin-2-one
Intermediate 93, triethylamine (0.23 mL, 1.65 mmol) and piperazin-2-one (246 mg, 2.46 mmol) were dissolved in NMP (2.5 mL) and heated at 200°C under microwave irradiation for 5 h. A further equivalent of piperazin-2-one (82 mg, 0.82 mmol) was added and the reaction mixture was heated at 200°C for a further 3 h. The reaction mixture was then diluted with water and extracted with ethyl acetate. The combined organic phase was washed with brine, dried over sodium sulphate, concentrated and reduced in vacuo. The crude product was purified by flash column chromatography (Biotage SNAP 50g), eluting with 50-90% DCM/MeOH/NH3 (9/1/0.1 v/v/v) in DCM. Concentration in vacuo yielded a yellow oil, to which was added water and acetonitrile. Filtration yielded the title compound (285 mg, 73%). δΗ (300 MHz, DMSO-d6) 8.07 (br s, 1H), 7.92 (s, 1H), 7.58 (d, J 8.3 Hz, 1H), 7.37 (t, J 7.8 Hz, 1H), 7.32 (t, J 73.9 Hz, 1H), 7.31 (s, 1H), 7.24 (m, 1H), 7.16 (td, J7.5, 1.0 Hz, 1H), 7.10 (dd, J 8.2, 1.6 Hz, 1H), 6.85 (dd, J7.6, 1.3 Hz, 1H), 6.76 (s, 1H), 5.49 (s, 2H), 4.00 (s, 2H), 3.73 (m, 2H), 3.28 (m, 2H), 2.52 (s, 3H), 2.13 (s, 3H). LCMS (pH 3) MH+ miz 478.8, RT 1.14 minutes. LCMS (pH 10) MH+ miz 478.8, RT 1.67 minutes. EXAMPLE 557
4- [5 -( 1 - ( [2-(Difluoromethoxy)phenyllmethyl| -2-methylbenzimidazol-5 -yl)-4-methyl- pyridin-2-yllmorpholine
Intermediate 93 (680 mg, 1.64 mmol), triethylamine (0.46 mL, 3.28 mmol) and morpholine (0.43 mL, 4.92 mmol) were dissolved in NMP (2.5 mL) and heated at 200°C under microwave irradiation for 5 h. The reaction mixture was then diluted with water and extracted with ethyl acetate. The combined organic phase was washed with brine, dried over sodium sulphate, concentrated and reduced in vacuo. Purification by preparative HPLC yielded the title compound (490 mg, 64%). δΗ (300 MHz, DMSO-d6) 7.92 (s, 1H), 7.58 (d, J 8.4 Hz, 1H), 7.37 (m, 1H), 7.31 (t, J 74.1 Hz, 1H), 7.30 (d, J 1.1 Hz, 1H), 7.24 (m, 1H), 7.16 (td, J 7.6, 1.1 Hz, 1H), 7.09 (dd, J 8.2, 1.6 Hz, 1H), 6.84 (dd, J 7.6, 1.3 Hz, 1H), 6.75 (s, 1H), 5.49 (s, 2H), 3.70 (m, 4H), 3.43 (m, 4H), 2.53 (s, 3H), 2.12 (s, 3H). LCMS (pH 3) MH+ miz 465.8, RT 1.38 minutes. LCMS (pH 10) MH+ miz 465.8, RT 1.90 minutes. EXAMPLES 558 TO 615
The following compounds can be synthesized from 2-(difluoromethoxy)benzyl- amine and 4-bromo-2-fluoronitrobenzene following the synthetic sequence described in steps 1 and 2 of Intermediate 47, followed by cyclisation with the appropriate carboxylic acid in accordance with Method J and (except where the 6-substituent is bromo) subsequent reaction with the appropriate boronic acid or ester in accordance with Method L.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[(methyl-
558 sulfonyl)methyl] - lH-benzimidazol-6-yl } pyridin- 1.18 460
2(lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[(methyl-
559 sulfmyl)methyl] - lH-benzimidazol-6-yl } pyridin- 1.11 444
2(lH)-one
6-Bromo- 1 - [2-(difluoromethoxy)benzyl] -2- [( 1 -
560 1.38 461 oxidopyridin-4-yl)methyl]-lH-benzimidazole
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2-[(2-oxo-
561 piperidin- 1 -yl)methyl] - lH-benzimidazol-6-yl } - 1.24 479 pyridin-2( 1 H)-one
5- {2-(Cyclohexylmethyl)-l -[2-(difluoromethoxy)-
562 1.55 465 benzyl] - lH-benzimidazol-6-yl }pyridin-2( 1 H)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(tetrahydro-2H-
563 pyran-3-ylmethyl)-lH-benzimidazol-6-yl}pyridin- 1.32 466
2(lH)-one
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(2,2,2-trifluoro-
564 1.34 450 ethyl)-lH-benzimidazol-6-yl}pyridin-2(lH)-one
5-(2- {[(2-Chloropyridin-4-yl)oxy]methyl} -1 -[2-
565 (difluoromethoxy)benzyl]-lH-benzimidazol-6-yl)- 509 and
1.35
511 pyridin-2( 1 H)-one
566 - - -
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[2-(pyridin-3-
567 1.31 542 yl)-l ,3 -thiazol-4-yl]methyl} - lH-benzimidazol-6-yl)- pyridin-2( 1 H)-one
5-(l -[2-(Difluoromethoxy)benzyl]-2- {[4-(pyrimidin-
568 2-yl)piperazin-l -yl]methyl} -lH-benzimidazol-6-yl)- 1.38 544 pyridin-2( 1 H)-one
5- (l -[2-(Difluoromethoxy)benzyl]-2- {[4-(2-oxo-
569 pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazol- 1.33 557
6- yl)pyridin-2(lH)-one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [(trifluoro-
570 methoxy)methyl] - 1 H-benzimidazol-6 -yl } pyridin- 1.39 466
2(lH)-one
1 - [3 -( { 6 -Bromo- 1 - [2 -(difluoromethoxy)benzyl] - 1 H-
542 and
571 1.59
benzimidazol-2-yl}methoxy)phenyl]pyrrolidin-2-one 544
1 -[3 -( { 1 -[2-(Difluoromethoxy)benzyl] -6-[4-
572 (pyrrolidin-l -ylmethyl)phenyl]-lH-benzimidazol-2- 1.7 623 yl } methoxy)phenyl] pyrrolidin-2 -one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -(methyl-
573 sulfonyl)benzyl]-lH-benzimidazol-6-yl}pyridine-2- 1.89 563 carboxamide
1 -[3 -( { 1 -[2-(Difluoromethoxy)benzyl] -6-(6-
574 methoxypyridin-3-yl)-lH-benzimidazol-2-yl}- 2.52 571 methoxy)phenyl]pyrrolidin-2-one
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2- [4-(methyl-
575 sulfonyl)benzyl]-lH-benzimidazol-6-yl}pyrimidin-2- 2.16 628 yl)-N-methylmethanesulfonamide
1 -[2-(Difluoromethoxy)benzyl] -6-(6-methoxy-
576 pyridin-3 -yl)-2-[4-(methylsulfonyl)benzyl] - 1H- 2.35 550 benzimidazole
1 -[3 -( { 1 -[2-(Difluoromethoxy)benzyl] -6-[4-(methyl-
577 sulfonyl)phenyl]-lH-benzimidazol-2-yl}methoxy)- 1.5 618 phenyl]pyrrolidin-2-one
1 -[3 -( { 1 -[2-(Difluoromethoxy)benzyl] -6-(l -methyl-
578 lH-pyrazol-4-yl)-lH-benzimidazol-2-yl}methoxy)- 1.41 544 phenyl]pyrrolidin-2-one
1 - [2 -(Difluoromethoxy)benzyl] -6 -( 1 -methyl- 1 H-
579 pyrazol-4-yl) -2 -(pyridin-4-ylmethyl) - 1 H- 1.31 446 benzimidazole 5- { 1 -[2-(Difluoromethoxy)benzyl] -2-(pyridin-4-yl- methyl)- lH-benzimidazol-6-yl } pyridine-2- 1.28 489 carboxamide
1 -[2-(Difluoromethoxy)benzyl] -6-[4-(methyl- sulfonyl)phenyl] -2-(pyridin-4-ylmethyl)- 1H- 1.38 520 benzimidazole
5 -( 1 - [2 -(Difluoromethoxy)benzyl] -2- { [3 -(2 -oxo - pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazol- 1.4 584
6-yl)pyridine-2-carboxamide
1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl- sulfonyl)benzyl] -6 - [4 -(methylsulfonyl)phenyl] - 1 H- 1.43 597 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -6 -( 1 -methyl- 1 H- pyrazol-4-yl) -2 - [4 -(methylsulfonyl)benzyl] - 1 H- 1.36 523 benzimidazole
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -(methyl- sulfonyl)benzyl] - lH-benzimidazol-6-yl } - 1 -methyl- 1.3 550 pyridin-2(lH)-one
5 -( 1 - [2 -(Difluoromethoxy)benzyl] -2- { [3 -(2 -oxo - pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazol- 1.5 607 6-yl)- 1 -(difluoromethyl)pyridin-2( 1 H)-one
5 -( 1 - [2 -(Difluoromethoxy)benzyl] -2- { [3 -(2 -oxo - pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazol- 1.39 587
6-yl)-l-methoxypyridin-2(lH)-one
5 -( 1 - [2 -(Difluoromethoxy)benzyl] -2- { [3 - (2 -oxo - pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazol- 1.37 571
6-yl)-l-methylpyridin-2(lH)-one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -(methyl- sulfonyl)benzyl]-lH-benzimidazol-6-yl}-N-methyl- 1.39 577 pyridine-2-carboxamide
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 - [4 -(methyl- sulfonyl)benzyl] - lH-benzimidazol-6-yl } - 1 - 1.43 586 (difluoromethyl)pyridin-2( 1 H) -one
1 -[3 -( { 1 -[2-(Difluoromethoxy)benzyl] -6-[6- (trifluoromethyl)pyridin-3-yl]-lH-benzimidazol-2- 1.66 609 yl } methoxy)phenyl] pyrrolidin-2 -one 1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl- sulfonyl)benzyl]-6-[6-(trifluoromethyl)pyridin-3-yl]- 1.59 588 lH-benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl- sulfonyl)benzyl] -6-[3 -(methylsulfonyl)phenyl]- 1H- 1.45 597 benzimidazole
4- { 1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl- sulfonyl)benzyl]-lH-benzimidazol-6-yl}- 1.37 598 benzenesulfonamide
1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl- sulfonyl)benzyl]-6-[6-(methylsulfonyl)pyridin-3-yl]- 1.39 598 lH-benzimidazole
2-(5- {l-[2-(Difluoromethoxy)benzyl]-2-[4-(methyl- sulfonyl)benzyl]-lH-benzimidazol-6-yl}pyrimidin-2- 1.41 579 yl)propan-2-ol
1 - [2 -(Difluoromethoxy)benzyl] -6 - [4 -(methyl- sulfinyl)phenyl] -2 - [4 -(methylsulfonyl)benzyl] - 1 H- 1.36 581 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -6 - [2 -methyl -4 - (methylsulfonyl)phenyl] -2- [4 -(methylsulfonyl) - 1.46 61 1 benzyl]-lH-benzimidazole
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl- sulfonyl)benzyl] - lH4oenzimidazol-6-yl } pyrimidin- 1.17 537 2(lH)-one
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2- [4-(methyl- sulfonyl)benzyl]-lH4oenzimidazol-6-yl}pyrimidin-2- 1.4 592 yl)-N-methylacetamide
1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl- sulfonyl)benzyl] -6 - [2 -(methylsulfonyl)pyrimidin-5 - 1.36 599 yl] - lH4oenzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 - [3 -methyl -4 - (methylsulfonyl)benzyl]-6-[4-(methylsulfonyl)- 1.41 61 1 phenyl]-lH-benzimidazole
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-(pyridin-4- ylmethyl)-lH-benzimidazol-6-yl}pyrimidin-2-yl)-N- 1.35 551 methylmethanesulfonamide 2-[3-Bromo-4-(methylsulfonyl)benzyl]-l -[2-
604 (difluoromethoxy)benzyl]-6-[4-(methylsulfonyl)- 675 and
1.44
677 phenyl]-lH-benzimidazole
5-( { 1 -[2-(Difluoromethoxy)benzyl]-6-[4-(methyl-
605 sulfonyl)phenyl] - lH-benzimidazol-2-yl } methyl)- 1 - 1.29 623 benzothiophen-3(2H)-one 1,1 -dioxide
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl-
606 sulfonyl)benzyl] - lH-benzimidazol-6-yl } - 1 -methoxy- 1.29 566 pyridin-2(lH)-one
1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl-
607 sulfonyl)benzyl] -6 - [2 -(methylsulfonyl)pyridin-4 -yl] - 1.39 598 lH-benzimidazole
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl-
608 sulfonyl)benzyl]-lH-benzimidazol-6-yl}-3-methyl- 1.33 577 pyridine-2-carboxamide
1 - [2 -(Difluoromethoxy)benzyl] -2 - [2 -methyl -4 -
609 (methylsulfonyl)benzyl]-6-[4-(methylsulfonyl)- 1.4 61 1 phenyl]-lH-benzimidazole
5- { 1 -[2-(Difluoromethoxy)benzyl] -2-[4-(methyl-
610 sulfonyl)benzyl]-lH-benzimidazol-6-yl}-N,N- 1.32 591 dimethylpyridine-2-carboxamide
1 - [2 -(Difluoromethoxy)benzyl] -6 - [3 -methyl -4 -
61 1 (methylsulfonyl)phenyl] -2- [4 -(methylsulfonyl) - 1.47 61 1 benzyl]-lH-benzimidazole
N-[5-(l-[2-(Difluoromethoxy)benzyl]-2-{[3-(2-oxo-
612 pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazol- 1.46 649
6-yl)pyrimidin-2-yl]-N-methylmethanesulfonamide
1 -[2-(Difluoromethoxy)benzyl] -2-[3 -(methyl-
613 sulfonyl)benzyl] -6 - [4 -(methylsulfonyl)phenyl] - 1 H- 1.39 597 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -6 - [2 -methyl-3 -
614 (methylsulfonyl)phenyl] -2- [4 -(methylsulfonyl) - 1.43 61 1 benzyl]-lH-benzimidazole
3-{l -[2-(Difluoromethoxy)benzyl]-2-[4-(methyl-
615 sulfonyl)benzyl]-lH-benzimidazol-6-yl}-5,6- 1.26 575 dihydro-7H-pyrrolo[3,4-^]pyridin-7-one EXAMPLES 616 TO 625
The following compounds can be synthesized from 5-chloro-2-(difluoromethoxy)- benzylamine and 4-bromo-2-fluoronitrobenzene following the synthetic sequence described in steps 1 and 2 of Intermediate 47, followed by cyclisation with the appropriate carboxylic acid in accordance with Method J and subsequent reaction with the appropriate boronic acid in accordance with Method L.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
1 - [5 -Chloro -2 -(difluoromethoxy)benzyl] -2- [4 -
616 (methylsulfonyl)benzyl]-6-[4-(methylsulfonyl)- 631 and
1.41
633 phenyl]-lH-benzimidazole
l-[5-Chloro-2-(difluoromethoxy)benzyl]-6-(l-
617 methyl-lH-pyrazol-4-yl)-2-[4-(methylsulfonyl)- 557 and
1.35
559 benzyl]-lH )enzimidazole
l-[5-Chloro-2-(difluoromethoxy)benzyl]-6-[4-
618 (methylsulfonyl)phenyl]-2-(pyridin-4-ylmethyl)-lH- 554 and
1.37
556 benzimidazole
1 -[3 -( { 1 -[5-Chloro-2-(difluoromethoxy)benzyl] -6-[4-
652 and
619 (methylsulfonyl)phenyl]-lH4oenzimidazol-2-yl}- 1.48
654 methoxy)phenyl]pyrrolidin-2-one
5-{l-[5-Chloro-2-(difluoromethoxy)benzyl]-2-
620 (pyridin-4-ylmethyl)-lH-benzimidazol-6-yl}pyridin- 492 and
1.19
494
2(lH)-one
l-[5-Chloro-2-(difluoromethoxy)benzyl]-6-(l-
621 methyl- lH-pyrazol-4-yl)-2-(pyridin-4-ylmethyl)- 1H- 480 and
1.31
482 benzimidazole
5-(l -[5-Chloro-2-(difluoromethoxy)benzyl]-2- {[3-(2-
622 oxopyrrolidin- 1 -yl)phenoxy]methyl} - \H- 591 and
1.32
593 benzimidazol-6-yl)pyridin-2(lH)-one
5-{l-[5-Chloro-2-(difluoromethoxy)benzyl]-2-[4-
623 (methylsulfonyl)benzyl]-lH4oenzimidazol-6-yl}- 570 and
1.24
572 pyridin-2( 1 H)-one l-[5-Chloro-2-(difluoromethoxy)benzyl]-2-methyl-6-
402 and
624 1.35
( 1 -methyl- lH-pyrazol-4-yl)- 1 H-benzimidazole 404
1 -[3 -( { 1 -[5-Chloro-2-(difluoromethoxy)benzyl] -6-(l -
625 methyl- lH-pyrazol-4-yl)- 1 H-benzimidazol-2-yl } - 578 and
1.43
580 methoxy)phenyl]pyrrolidin-2-one
EXAMPLES 626 TO 645
The following compounds can be synthesized from (5)-l-(4-fluorophenyl)ethyl- amine and 4-bromo-2-fluoronitrobenzene or 4-cyano-2-fluoronitrobenzene following the synthetic sequence described in steps 1 and 2 of Intermediate 47, followed by cyclisation with the appropriate carboxylic acid in accordance with Method J and (except where the 6-substituent is bromo or cyano) reaction with the appropriate boronic acid or ester in accordance with Method L.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
3 -[3 -( {6-Bromo- 1 - [( 15) - 1 -(4-fluorophenyl)ethyl] -
626 lH-benzimidazol-2-yl } methoxy)phenyl] -1,3- 510 and
1.6
512 oxazolidin-2-one
3-[3-({l-[(lS)-l-(4-Fluorophenyl)ethyl]-6-(6-
627 methoxypyridin-3-yl)-lH-benzimidazol-2-yl}- 1.57 539 methoxy)phenyl] -1,3 -oxazolidin-2-one
6-Bromo-l-[(lS)-l-(4-fluorophenyl)ethyl]-2-[4-
487 and
628 1.58
(methylsulfonyl)benzyl]-lH-benzimidazole 489
1 -[3 -( {6-Bromo- 1 - [( 15) - 1 -(4-fluorophenyl)ethyl] -
629 lH-benzimidazol-2-yl}methoxy)phenyl]pyrrolidin-2- 508 and
1.66
510 one
N-(5- { 1 -[(15)-1 -(4-Fluorophenyl)ethyl]-2-methyl-
630 lH-benzimidazol-6-yl}pyrimidin-2-yl)-N-methyl- 2.06 440 methanesulfonamide
5- (l - [( 15)- 1 -(4-Fluorophenyl)ethyl] -2- { [3 -(2-oxo-
631 pyrrolidin-l-yl)phenoxy]methyl}-lH-benzimidazol- 1.87 523
6- yl)pyridin-2( 1 H)-one
632 5- { 1 -[(15)-1 -(4-Fluorophenyl)ethyl]-2-[4-(methyl- 1.64 502 sulfonyl)benzyl] - lH-benzimidazol-6-yl } pyridin- 2(lH)-one
5- { 1 -[(15)-1 -(4-Fluorophenyl)ethyl]-2-methyl-lH-
633 1.56 348 benzimidazol-6-yl }pyridin-2( 1 H)-one
N-[5-(l-[(lS)-l -(4-Fluorophenyl)ethyl] -2 - { [3 - (2- oxopyrrolidin- 1 -yl)phenoxy]methyl} - 1H-
634 2.37 615 benzimidazol-6-yl)pyrimidin-2-yl]-N-methyl- methanesulfonamide
l-[(lS)-l -(4-Fluorophenyl)ethyl]-6-(6-methoxy-
635 pyridin-3 -yl)-2 - [4 -(methylsulfmyl)benzyl] - 1 H- 2.27 500 benzimidazole
3-[4-({l -[(lS)-l -(4-Fluorophenyl)ethyl]-6-(6-
636 methoxypyridin-3-yl)-lH-benzimidazol-2-yl}- 2.41 523 methyl)phenyl]-l,3-oxazolidin-2-one
l-[(lS)-l -(4-Fluorophenyl)ethyl]-2-[4-(methyl-
637 1.42 434 sulfonyl)benzyl]-lH-benzimidazole-6-carbonitrile
l-[(lS)-l -(4-Fluorophenyl)ethyl]-6-(6-methoxy-
638 pyridin-3 -yl)-2 - [4 -(methylsulfonyl)benzyl] - 1 H- 1.52 516 benzimidazole
l-[(lS)-l -(4-Fluorophenyl)ethyl]-2-(pyridin-4-yl-
639 1.35 357 methyl)-lH43enzimidazole-6-carbonitrile
l-[(lS)-l -(4-Fluorophenyl)ethyl]-2- {[3-(2-oxo-
640 pyrrolidin-l -yl)phenoxy]methyl}-lH-benzimidazole- 1.51 455
6-carbonitrile
l-[3-({l -[(lS)-l -(4-Fluorophenyl)ethyl]-6-(6-
641 methoxypyridin-3-yl)-lH-benzimidazol-2-yl}- 1.62 537 methoxy)phenyl]pyrrolidin-2-one
l-[(lS)-l -(4-Fluorophenyl)ethyl]-6-(6-methoxy-
642 pyridin-3 -yl)-2 -(pyridin-4-ylmethyl) - 1 H- 1.49 439 benzimidazole
l-[(lS)-l -(4-Fluorophenyl)ethyl]-6-(l -methyl-lH-
643 pyrazol-4-yl) -2 - [4 -(methylsulfonyl)benzyl] - 1 H- 1.36 489 benzimidazole
l-[(lS)-l -(4-Fluorophenyl)ethyl]-2-[4-(methyl-
644 sulfonyl)benzyl] -6 - [4 -(methylsulfonyl)phenyl] - 1 H- 1.38 563 benzimidazole 5-(l -[( IS)- 1 -(4-Fluorophenyl)ethyl] -2- { [3 -(2-oxo-
645 l,3-oxazolidin-3-yl)phenoxy]methyl} -lH- 1.28 525 benzimidazol-6-yl)pyridin-2(lH)-one
EXAMPLES 646 TO 648
The following compounds can be synthesized from 6-chloro-(2-difluoromethoxy)- benzylamine and 4-bromo-2-fluoronitrobenzene following the synthetic sequence described in steps 1 and 2 of Intermediate 47, followed by cyclisation with the appropriate carboxylic acid in accordance with Method J and reaction with the appropriate boronic acid or ester in accordance with Method L.
Figure imgf000255_0001
EXAMPLES 649 TO 741
The following compounds can be synthesized by a sequence of steps
corresponding to the preparation of Intermediate 34 followed by Method J, utilizing the appropriate boronic acid (except where the 6-substituent is bromo), the appropriate amine and the appropriate carboxylic acid. Examples 649, 687, 689, 690, 693, 695, 698-700, 702, 707 and 712-714 commence from 2-fluoronitrobenzene.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
649 1 -Methyl-3-( {2-[(pyridin-4-ylmethoxy)methyl] -1H- 1.97 384 benzimidazol- 1 -yl } methyl)- lH-indazole
0-669 - - -
[6-Bromo-l -(1 -phenylethyl)-lH-benzimidazol-2-yl]-
331 and
670 2.15
methanol 333
1 -(1 -Phenylethyl)-6-(lH-pyrazol-4-yl)-2-(pyridin-4-
671 1.78 380 ylmethyl)- lH-benzimidazole
6-(2-Fluoropyridin-3-yl)-l -(1 -phenylethyl)-2-
672 2.34 409
(pyridin-4-ylmethyl)-lH-benzimidazole
6-(lH-Indol-6-yl)-l -(1 -phenylethyl)-2-(pyridin-4-yl-
673 2.62 429 methyl)-lH-benzimidazole
1 -(1 -Phenylethyl)-2-(pyridin-4-ylmethyl)-6-
674 2.73 396
(thiophen-3 -yl)- lH-benzimidazole
6-(6-Fluoropyridin-3-yl)-l -(1 -phenylethyl)-2-
675 2.43 409
(pyridin-4-ylmethyl)-lH-benzimidazole
8-[l -(1 -Phenylethyl)-2-(pyridin-4-ylmethyl)-lH-
676 2.19 441 benzimidazol-6-yl]quinoline
2-Methyl-5-[l -(1 -phenylethyl)-2-(pyridin-4-yl-
677 2.09 444 methyl)-lH-benzimidazol-6-yl]-2H-indazole
6-(4-Methylthiophen-3-yl)-l-(l -phenylethyl)-2-
678 2.56 410
(pyridin-4-ylmethyl)-lH-benzimidazole
6-Bromo-l -(l -phenylethyl)-2-[2-(pyrazin-2-yl)-
679 2.52 408 ethyl]-lH-benzimidazole
2-Methyl-6-[l -(1 -phenylethyl)-2-(pyridin-4-yl-
680 2.15 444 methyl)-lH-benzimidazol-6-yl]-2H-indazole
6-[3-(Morpholin-4-ylmethyl)phenyl]-l -(1 -phenyl-
681 2.45 489 ethyl)-2-(pyridin-4-ylmethyl)-lH-benzimidazole
6-Bromo-2- [2-( 1 H-imidazol- 1 -yl)ethyl] - 1 -( 1 -phenyl-
395 and
682 2.31
ethyl)- lH-benzimidazole 397
6-(2,3-Dihydrothieno[3,4-^][l,4]dioxin-5-yl)-l -(2,5-
683 dimethylbenzyl)-2-(pyridin-4-ylmethyl)-lH- 2.61 468 benzimidazole
1- {[6-Bromo-l -(l -phenylethyl)-lH-benzimidazol-2-
409 and
684 2.08
yl]methyl}pyrimidin-2(lH)-one 41 1
6-Bromo-l-(2,5-dichlorobenzyl)-2-(pyridin-4-yl-
447 and
685 2.39
methyl)-lH-benzimidazole 449
686 4- {[6-Bromo-l -(l -phenylethyl)-lH-benzimidazol-2- 1.9 451 and yl]methoxy} benzoic acid 453
2-[l -(2,5-Dichlorobenzyl)-lH-benzimidazol-2-yl]-2-
397, 399
687 2.58
phenylethanol and 401
6-Bromo- 1 -[( 1R)-1 -phenylethyl] -2-(pyridin-4-yl-
392 and
688 2.28
methyl)-lH-benzimidazole 394
1 -(2,5 -Dichlorobenzyl)-2- { [( 1 -methylpyrrolidin-3 -
390, 392
689 2.3
yl)oxy]methyl} - lH-benzimidazole and 394 l-(2,5-Dichlorobenzyl)-2-[(pyrrolidin-3-yloxy)-
376, 378
690 2.1
methyl]-lH-benzimidazole and 400 l-(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-lH-
354, 356
691 2.05
benzimidazole and 358 l-(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-2-(trifluoro-
422, 424
692 2.68
methyl)-lH-benzimidazole and 426
4-({[l -(2,5-Dichlorobenzyl)-lH-benzimidazol-2-yl]-
441 , 443
693 2.6
methoxy}methyl)-N,N-dimethylpyridin-2-amine and 445
1 -(2,5-Dichlorobenzyl)-6-(pyridin-4-yl)-2-( { [6- 9, 531
694 (trifluoromethyl)pyridin-3 -yl] oxy } methyl)- 1H- 52
2.57
and 533 benzimidazole
l-[(lR)-l -Phenylethyl]-2-[(pyridin-4-ylmethoxy)-
695 2.14 343 methyl]-lH-benzimidazole
N-(Cyanomethyl)-4- {[1 -(2,5-dichlorobenzyl)-6-
542, 544
696 (pyridin-4-yl)- lH-benzimidazol-2-yl]methoxy} - 1.61
and 546 benzamide
6-Bromo-2- { [(6-methoxypyridin-3 -yl)oxy]methyl} -
697 1 -[(2-methyl- 1 ,3 -thiazol-4-yl)methyl] -1H- 445 and
1.53
447 benzimidazole
[l-(5-Fluoro-2-methoxybenzyl)-lH-benzimidazol-2-
698 1.88 287 yl]methanol
l-(2,5-Dichlorobenzyl)-2- {[(6-methoxypyridin-3-yl)-
414, 416
699 1.66
oxy]methyl} - lH-benzimidazole and 418
4-{[l -(2,5-Dichlorobenzyl)-lH-benzimidazol-2-yl]-
426, 428
700 1.48
methoxy } benzamide and 430
5 - { [6 -Bromo - 1 -(2, 5 -dichlorobenzyl) - 1 H-
506, 508
701 1.58
benzimidazol-2-yl]methoxy}pyridine-2-carboxamide and 510
5-{[l -(2,5-Dichlorobenzyl)-lH-benzimidazol-2-yl]-
427, 429
702 1.47
methoxy } pyridine-2-carboxamide and 431 1 -[(2-Methyl- 1 ,3 -thiazol-4-yl)methyl] -6-(l -oxido- pyridin-4 -yl)-2 - [(pyridin-3 -yloxy)methyl] - 1 H- 1.1 1 430 benzimidazole
4-( { 1 - [(2-Methyl- 1 ,3 -thiazol-4-yl)methyl] -6-(l - oxidopyridin-4-yl)-lH-benzimidazol-2-yl}methoxy)- 1.07 472 benzamide
4-( { 1 - [(2-Methyl- 1 ,3 -thiazol-4-yl)methyl] -6-
(pyrimidin-4-yl)-lH-benzimidazol-2-yl}methoxy)- 1.19 457 benzamide
1 -[(2-Methyl- 1 ,3 -thiazol-4-yl)methyl] -2-[(pyridin-3 -
1.23 415 yloxy)methyl]-6-(pyrimidin-4-yl)-lH-benzimidazole
( 1 - { [ 1 -Methyl-3 -(trifluoromethyl) - 1 H-thieno [2, 3 -c] - pyrazol-5-yl]methyl} - lH-benzimidazol-2-yl)- 1.4 367 methanol
l-(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-2-[(pyridin-
1.24 421 3 -yloxy)methyl] - lH-benzimidazole
3-{[l -(2,6-Dimethylbenzyl)-6-(pyridin-4-yl)-lH-
1.3 464 benzimidazol-2-yl]methoxy}pyridine-2-carboxamide
{ 1 -[(2-Methyl- 1 ,3 -thiazol-4-yl)methyl]-6-(pyridin-4-
1.15 337 yl)- lH-benzimidazol-2-yl } methanol
l-[(5-Methylisoxazol-3-yl)methyl]-6-(l -methyl-lH- pyrazol-4-yl) -2 -(pyridin-4-ylmethyl) - 1 H- 1.18 385 benzimidazole
{ 1 -[5-Chloro-2-(difluoromethoxy)benzyl] - 1H-
338 and
1.44
benzimidazol-2-yl } methanol 340
4-{[l -(2,5-Dichlorobenzyl)-lH-benzimidazol-2-yl]-
427, 429
1.48
methoxy } pyridine-2-carboxamide and 431 l-(2,5-Dichlorobenzyl)-2-[(pyrimidin-5-yloxy)-
385, 387
1.43
methyl]-lH-benzimidazole and 389 l-[(lR)-l -(4-Chlorophenyl)ethyl]-6-(6-methoxy-
377 and
1.59
pyridin-3-yl)-2-methyl-lH-benzimidazole 379
2-[(Cyclopropylmethoxy)methyl]-6-(6-methoxy- pyridin-3-yl)-l -[(1R)-1 -phenylethyl]-lH- 1.7 414 benzimidazole
6-(6-Methoxypyridin-3-yl)-2-[4-(methylsulfonyl)-
1.55 498 benzyl] -1-[(1R)-1 -phenylethyl] - 1 H-benzimidazole 6-(6-Methoxypyridin-3-yl)-l-[(lR)-l -phenylethyl]-2-
718 1.5 422
(pyrazin-2-ylmethyl)-lH-benzimidazole
2-[(3,5-Dimethyl-lH-pyrazol-4-yl)methyl]-6-(6-
719 methoxypyridin-3 -yl)- 1 - [( 1R)- 1 -phenylethyl] - 1H- 1.48 438 benzimidazole
2-(Ethoxymethyl)-6-(6-methoxypyridin-3-yl)-l-
720 1.62 388
[( 1 R) - 1 -phenylethyl] - 1 H-benzimidazole
6-(6-Methoxypyridin-3 -yl)-2-[(2-methyl- 1 ,3 -thiazol-
721 4-yl)methyl]-l -[(1R)-1 -phenylethyl] -1H- 1.62 441 benzimidazole
6-(6-Methoxypyridin-3 -yl)-2-[(2-methyl- 1H-
722 imidazol- 1 -yl)methyl] - 1 - [( 1R) - 1 -phenylethyl] - 1H- 1.45 424 benzimidazole
6-(6-Methoxypyridin-3-yl)-l-[(lR)-l -phenylethyl]-2-
723 1.5 421
(pyridin-4-ylmethyl)-lH-benzimidazole
6-(6-Methoxypyridin-3 -yl)-2- { [3 -(methylsulfonyl)-
724 phenoxy]methyl }-l-[(lS)-l -phenylethyl] - 1 H- 1.61 514 benzimidazole
l-[3-({6-(6-Methoxypyridin-3-yl)-l -[(lR)-l -phenyl-
725 ethyl] - lH-benzimidazol-2-yl } methoxy)phenyl] - 1.64 519 pyrrolidin-2-one
6-({6-(6-Methoxypyridin-3-yl)-l-[(lS)-l-phenyl-
726 ethyl] - lH-benzimidazol-2-yl } methoxy)-3 ,4-dihydro- 1.55 505 quinolin-2(lH)-one
6-(6-Methoxypyridin-3-yl)-2-[4-(methylsulfonyl)-
727 1.51 498 benzyl] -1-[(1S)-1 -phenylethyl] - IH-benzimidazole
6-({6-(6-Methoxypyridin-3-yl)-l-[(lS)-l-phenyl-
728 ethyl]-lH-benzimidazol-2-yl}methoxy)-2,3-dihydro- 1.5 491 lH-isoindol-l-one
6-(6-Methoxypyridin-3-yl)-l-[(lS)-l -phenylethyl]-2-
729 1.57 488
[4-( lH-tetrazol- 1 -yl)benzyl] - IH-benzimidazole
6-(6-Methoxypyridin-3-yl)-l-[(lS)-l -phenylethyl]-2-
730 1.5 422
(pyrazin-2-ylmethyl)-lH-benzimidazole
l-[3-({6-(6-Methoxypyridin-3-yl)-l -[(lS)-l -phenyl-
731 ethyl] - lH-benzimidazol-2-yl } methoxy)phenyl] - 1.64 519 pyrrolidin-2-one 6-(6-Methoxypyridin-3 -yl)-2-[3 -(methylsulfonyl)-
732 1.56 498 benzyl] -1-[(1S)-1 -phenylethyl] - lH-benzimidazole
2- [(Difluoromethoxy)methyl] -6 -(6 -methoxypyridin-
733 1.62 410
3 -yl)- 1 - [( 1 S)- 1 -phenylethyl] - lH-benzimidazole
4-({6-(6-Methoxypyridin-3-yl)-l-[(lS)-l-phenyl-
734 ethyl] - lH-benzimidazol-2-yl } methyl)- 1 ,3 -thiazol-2- 1.48 442 amine
3-Fluoro-5-({6-(6-methoxypyridin-3-yl)-l -[(lS)-l -
735 phenylethyl] - lH-benzimidazol-2-yl } methoxy)- 1.46 498 pyridine-2-carboxamide
6-(6-Methoxypyridin-3 -yl)-2-[(2-methyl- 1H-
736 imidazol- 1 -yl)methyl] - 1 - [( 1 S) - 1 -phenylethyl] - 1 H- 1.46 424 benzimidazole
6-(6-Methoxypyridin-3 -yl)-2-[(2-methyl- 1 ,3 -thiazol-
737 4-yl)methyl]-l -[(15)-1 -phenylethyl] -1H- 1.61 441 benzimidazole
6-(6-Methoxypyridin-3-yl)-2-{[(5-methylisoxazol-3-
738 yl)oxy]methyl} - 1 - [( 15) - 1 -phenylethyl] - 1H- 2.51 441 benzimidazole
5-({6-(6-Methoxypyridin-3-yl)-l-[(lS)-l-phenyl-
739 ethyl] - lH-benzimidazol-2-yl } methoxy)pyridin- 1.42 453
2(lH)-one
2-[(Cyclopropylmethoxy)methyl]-6-(6-methoxy-
740 pyridin-3-yl)-l -[(15)-1 -phenylethyl]-lH- 1.73 414 benzimidazole
2-(Ethoxymethyl)-6-(6-methoxypyridin-3-yl)-l-
741 1.68 388
[( 1 S) - 1 -phenylethyl] - 1 H-benzimidazole
EXAMPLES 742 TO 768
Examples 742, 748-750 and 757-768 can be synthesized from Intermediate 17 ' by cyclisation with the appropriate carboxylic acid according to Method J and subsequent reaction with the appropriate boronic acid or ester in accordance with Method L. Examples 743-747 and 751-756 can be synthesized from Intermediate 6 or Intermediate 9, as appropriate, by cyclisation with the appropriate carboxylic acid according to Method J.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 -
742 2.17 408 yl)-2-(pyridin-4-ylmethyl)-lH-benzimidazole
l-(2,5-Dimethylbenzyl)-2-[(pyridin-2-ylsulfanyl)-
743 2.61 360 methyl]-lH-benzimidazole
3-(4- {[1 -(2,5-Dimethylbenzyl)-lH-benzimidazol-2-
744 2.53 427 yljmethyl} piperazin- 1 -yl)phenol
2-{[(2,3-Difluorobenzyl)oxy]methyl}-l-(2,5-
745 2.88 393 dimethylbenzyl)- lH-benzimidazole
2-[2-(4-Chlorophenoxy)ethyl]-l-(l -phenylethyl)-lH-
746 2.89 377 benzimidazole
2-( { [1 -(2,5-Dimethylbenzyl)-lH-benzimidazol-2-yl]-
747 2.88 400 methyl} sulfanyl)- 1 ,3 -benzoxazole
8-[l -(2,5-Dimethylbenzyl)-2-(pyridin-4-ylmethyl)-
748 2.87 455 lH-benzimidazol-6-yl]quinoline
l-{3-[l -(2,5-Dimethylbenzyl)-2-(pyridin-4-yl-
749 2.74 446 methyl)-lH-benzimidazol-6-yl]phenyl}ethanone
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 -
750 2.59 385 yl)-2-(trifluoromethyl)-lH-benzimidazole
2-[5-( { [1 -(2,5-Dimethylbenzyl)-lH-benzimidazol-2-
751 yl]methyl} sulfanyl)- lH-tetrazol- 1 -yl] -N,N-dimethyl- 2.59 422 ethanamine
l-(2,5-Dimethylbenzyl)-2-[(pyridin-4-ylsulfanyl)-
752 2.52 360 methyl]-lH-benzimidazole
2- { [(2,5-Dimethylbenzyl)oxy]methyl} - 1 -(1 -phenyl -
753 3.2 371 ethyl)- lH-benzimidazole
7-{[l -(l -Phenylethyl)-lH-benzimidazol-2-yl]-
754 2.64 380 methoxy } quinoline
2-Methyl-5 - { [ 1 -( 1 -phenylethyl)- lH-benzimidazol-2-
755 2.83 400 yljmethoxy } -1,3 -benzothiazole l-(2,5-Dimethylbenzyl)-2-[(pyridin-3-yloxy)methyl]-
756 2.45 344 lH-benzimidazole
l-(2,5-Dimethylbenzyl)-6-(2-fluoropyridin-3-yl)-2-
757 2.21 423
(pyridin-4-ylmethyl)-lH-benzimidazole
5-[l -(2,5-Dimethylbenzyl)-2-(pyridin-4-ylmethyl)-
758 1.95 420 lH-benzimidazol-6-yl]pyridin-2-amine
5-[l -(2,5-Dimethylbenzyl)-2-(pyridin-4-ylmethyl)-
759 1.54 438 lH-benzimidazol-6-yl]pyrimidine-2,4(lH,3H)-dione
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 -
760 yl)-2- { [(2-methylpyridin-3 -yl)oxy]methyl} - 1H- 2.23 438 benzimidazole
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 -
761 yl)-2- { [4-(pyridin-2-yl)piperazin-l -yl]methyl} - 1H- 2.67 492 benzimidazole
3- {[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol-
762 2.58 448
4- yl)-lH-benzimidazol-2-yl]methoxy}benzonitrile
N-Benzyl-1 -[1 -(2,5-dimethylbenzyl)-6-(l -methyl-
763 lH-pyrazol-4-yl)-lH-benzimidazol-2-yl]-N-methyl- 2.96 450 methanamine
2-{[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol-
764 4-yl)-lH-benzimidazol-2-yl]methyl}-l,2,3,4- 2.99 462 tetrahydroisoquinoline
l-[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol-
765 4-yl)-lH-benzimidazol-2-yl]-N-methyl-N-(pyridin-2- 2.45 451 ylmethyl)methanamine
l-[l -(2,5-Dimethylbenzyl)-6-(l -methyl-lH-pyrazol-
766 4-yl)-lH-benzimidazol-2-yl]-N-(furan-2-ylmethyl)- 2.71 440
N-methylmethanamine
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 -
767 yl)-2- {[(l-oxidopyridin-3-yl)oxy]methyl} -lH- 1.67 440 benzimidazole
1 -(2, 5 -Dimethylbenzyl) -6 -( 1 -methyl- 1 H-pyrazol-4 -
768 yl)-2- { [(thiophen-2-ylmethyl)sulfanyl]methyl} - 1H- 2.66 459 benzimidazole EXAMPLES 769 TO 773
The following compounds can be synthesized from Intermediate 18 and the appropriate boronic acid or ester in accordance with Method L.
Figure imgf000263_0001
EXAMPLES 774 & 775
Example 774 can be synthesized from Intermediate 47 hy treatment with the appropriate boronic acid in accordance with Method L.
Example 775 can be synthesized by a sequence of steps corresponding to the preparation of Intermediate 47 commencing from 3-bromo-2-fluoronitrobenzene and subsequent reaction with the appropriate boronic acid or ester in accordance with Method L.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
1 -[2-(Difluoromethoxy)benzyl] -2-methyl-6-[3 -
774 1.43 443
(methylsulfonyl)phenyl]-lH-benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -7-(6-methoxy-
775 1.48 396 pyridin-2-yl)-2-methyl-lH-benzimidazole EXAMPLE 776
The following compound can be synthesized by a sequence of steps corresponding to the preparation of Intermediate 47 commencing from 5-bromo-2-fluoronitrobenzene and subsequent reaction with the appropriate boronic acid or ester in accordance with Method L.
Figure imgf000264_0001
The following compounds can be synthesized from Intermediate 75 and the appropriate boronic acid or ester in accordance with Method L. QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+ l-[5-Chloro-2-(difluoromethoxy)benzyl]-5-fluoro-2-
494 and
781 methyl-6-[4-(methylsulfonyl)phenyl]-lH- 1.46
496 benzimidazole
4-{l-[5-Chloro-2-(difluoromethoxy)benzyl]-5-
782 fluoro-2-methyl- lH43enzimidazol-6-yl } benzene- 495 and
1.39
497 sulfonamide
1 -(5- { 1 -[5-Chloro-2-(difluoromethoxy)benzyl]-5-
783 fluoro-2-methyl- lH4)enzimidazol-6-yl } pyrimidin-2- 545 and
1.2
547 yl)piperidine-4-carboxylic acid
1 -(5- { 1 -[5-Chloro-2-(difluoromethoxy)benzyl]-5-
784 fluoro-2-methyl- lH43enzimidazol-6-yl } pyrimidin-2- 559 and
1.23
561 yl)-4-methylpiperidine-4-carboxylic acid
EXAMPLES 785 TO 789 The following compounds can be synthesized from Intermediate 50 and the appropriate boronic acid or ester in accordance with Method L.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+ l-[2-(Difluoromethoxy)benzyl]-5-fluoro-2-methyl-6-
785 [2-(morpholin-4-yl)pyrimidin-5-yl]-lH- 1.5 470 benzimidazole
l-[2-(Difluoromethoxy)benzyl]-5-fluoro-2-methyl-6-
786 {2-[4-(methylsulfonyl)piperazin- 1 -yl]pyrimidin-5- 1.47 547 yl} -lH-benzimidazole
1 -(5 - { 1 - [2-(Difluoromethoxy)benzyl] -5 -fluoro-2-
787 methyl-lH-benzimidazol-6-yl}pyrimidin-2-yl)- 1.18 512 piperidine-4-carboxylic acid
4- { 1 -[2-(Difluoromethoxy)benzyl] -5-fluoro-2-
788 1.37 462 methyl-lH-benzimidazol-6-yl}benzenesulfonamide
789 4-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -5 -fluoro-2- 1.31 483 methyl-lH-benzimidazol-6-yl}pyrimidin-2-yl)- piperazin-2-one
EXAMPLES 790 to 800
Examples 790, 791 and 793-800 can be synthesized from Intermediate 47 and the appropriate boronic acid or ester in accordance with Method L.
Example 792 can be prepared by an analogous procedure.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
790 1.44 394 benzimidazol-6-yl}pyridine-2-carbaldehyde
N-(4- {l-[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
791 1.49 434 benzimidazol-6-yl}phenyl)prop-2-enamide
tert-Butyl {4-[l -(2,5-dimethylbenzyl)-2-methyl-lH-
792 1.75 442 benzimidazol-6-yl]phenyl}carbamate
tert-Butyl (4- { 1 -[2-(difluoromethoxy)benzyl] -2-
793 1.63 480 methyl-lH-benzimidazol-6-yl}phenyl)carbamate
(4- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
794 1.67 469 benzimidazol-6-yl}phenyl)(phenyl)methanone
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
795 1.3 409 benzimidazol-6-yl}pyridine-2-carboxamide
4-{l -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
796 1.35 444 benzimidazol-6-yl } benzenesulfonamide
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
797 benzimidazol-6-yl}-N-methylpyridine-2- 1.37 423 carboxamide
1 - [2 -(Difluoromethoxy)benzyl] -6 -(3 , 5 -dimethyl -
798 1.45 384 isoxazol-4-yl)-2-methyl-lH-benzimidazole
1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
799 benzimidazol-6-yl}pyrimidin-2-yl)piperidine-4- 1.19 494 carboxylic acid
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [4 -
800 1.39 443
(methylsulfonyl)phenyl]-lH-benzimidazole EXAMPLES 801 to 840
The following compounds can be synthesized from Intermediate 65 and the appropriate amine in accordance with Method S.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
801 benzimidazol-6-yl}-N-(2-methoxyethyl)pyrimidin-2- 1.38 440 amine
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [2 -
802 1.49 452
(morpholin-4-yl)pyrimidin-5-yl]-lH-benzimidazole
1 -[2-(Difluoromethoxy)benzyl] -6-[2-(l , 1 -dioxido-
803 thiomorpholin-4-yl)pyrimidin-5 -yl] -2 -methyl- 1 H- 1.41 500 benzimidazole
[1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl-lH-
804 benzimidazol-6-yl}pyrimidin-2-yl)piperidin-3-yl]- 1.45 480 methanol
3-[(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl-lH-
805 benzimidazol-6-yl}pyrimidin-2-yl)amino]propan-l- 1.28 440 ol
{ 1 -[(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl-
806 lH-benzimidazol-6-yl } pyrimidin-2-yl)amino] - 1.47 480 cyclopentyljmethanol
1 -(5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
807 1.38 466 benzimidazol-6-yl}pyrimidin-2-yl)piperidin-3-ol
2-[(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
808 1.26 426 benzimidazol-6-yl}pyrimidin-2-yl)amino]ethanol
N'-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
809 benzimidazol-6-yl}pyrimidin-2-yl)-N,N-dimethyl- 1.35 453 ethane-1 ,2-diamine
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
810 benzimidazol-6-yl}-N-[2-(morpholin-4-yl)ethyl]- 1.34 495 pyrimidin-2 -amine Methyl N-(5- { 1 -[2-(difluoromethoxy)benzyl] -2-
81 1 methyl-lH-benzimidazol-6-yl}pyrimidin-2-yl)- - 1.4 468 alaninate
(3S)-\ -(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-
812 lH-benzimidazol-6-yl}pyrimidin-2-yl)-N,N- 1.35 479 dimethylpyrrolidin-3 -amine
2-[4-(5-{l -[2-(Difluoromethoxy)benzyl]-2-methyl-
813 lH-benzimidazol-6-yl}pyrimidin-2-yl)piperazin-l- 1.32 495 yl]ethanol
(3R)-1 -(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-
814 lH-benzimidazol-6-yl}pyrimidin-2-yl)-N,N- 1.41 478 dimethylpyrrolidin-3 -amine
1 -[(5- { 1 -[2-(Difluoromethoxy)benzyl] -2 -methyl- 1H-
815 benzimidazol-6-yl}pyrimidin-2-yl)amino]-3- 1.38 484 methoxy-2-methylpropan-2-ol
5-{l -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
816 benzimidazol-6-yl}-N-(pyrimidin-5-ylmethyl)- 1.33 474 pyrimidin-2 -amine
(25)-2-[(5 - { 1 -[2-(Difluoromethoxy)benzyl] -2-
817 methyl-lH-benzimidazol-6-yl}pyrimidin-2-yl)- 1.33 440 amino]propan- 1 -ol
1 -[(5- { 1 -[2-(Difluoromethoxy)benzyl] -2 -methyl- 1H-
818 benzimidazol-6-yl}pyrimidin-2-yl)amino]-2-methyl- 1.34 454 propan-2-ol
1 - [2 -(Difluoromethoxy)benzyl] -6 - [2 -(4 -methoxy-
819 piperidin- 1 -yl)pyrimidin-5 -yl] -2 -methyl- 1 H- 1.54 480 benzimidazole
l-[2-(Difluoromethoxy)benzyl]-6-{2-[(2S)-2-
820 (methoxymethyl)pyrrolidin- 1 -yl]pyrimidin-5 -yl } -2- 1.55 480 methyl- lH-benzimidazole
2-Cyclopropyl-l -[(5- { 1 -[2-(difluoromethoxy)-
821 benzyl] -2-methyl- lH-benzimidazol-6-yl } pyrimidin- 1.41 480
2-yl)amino]propan-2-ol
5-{l -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
822 benzimidazol-6-yl} -N-[2-(l ,3-thiazol-2-yl)ethyl]- 1.4 493 pyrimidin-2 -amine 1 -(5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H- benzimidazol-6-yl}pyrimidin-2-yl)piperidine-4- 1.32 493 carboxamide
(25)-2-[(5 - { 1 -[2-(Difluoromethoxy)benzyl] -2- methyl- 1 H-benzimidazol-6 -yl } pyrimidin-2 -yl)- 1.38 500 amino] -4-(methylsulfanyl)butan- 1 -ol
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [2 -(2 - methylmorpholin-4-yl)pyrimidin-5-yl]-lH- 1.52 466 benzimidazole
[1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl-lH- benzimidazol-6-yl}pyrimidin-2-yl)azetidin-3-yl]- 1.25 452 methanol
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
1.41 410 benzimidazol-6-yl}-N-ethylpyrimidin-2-amine
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H- benzimidazol-6-yl} -N-(5 -methyl- 1 ,3,4-thiadiazol-2- 1.37 480 yl)pyrimidin-2 -amine
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H- benzimidazol-6-yl}-N-(5-ethyl-l,3,4-oxadiazol-2-yl)- 1.3 478 pyrimidin-2 -amine
4- { [(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- lH-benzimidazol-6-yl } pyrimidin-2 -yl)amino] - 1.24 479 methyl } pyrrolidin-2 -one
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H- benzimidazol-6-yl}-N-(l,3-thiazol-2-ylmethyl)- 1.38 479 pyrimidin-2 -amine
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
1.13 467 benzimidazol-6-yl}pyrimidin-2-yl)-N-methylalanine
[(25)-l -(5 - { 1 -[2-(Difluoromethoxy)benzyl]-2- methyl-lH-benzimidazol-6-yl}pyrimidin-2-yl)- 1.4 466 pyrrolidin-2-yl]methanol
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
1.12 454 benzimidazol-6-yl}pyrimidin-2-yl)-N-methylglycine
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [2 -(7 - oxa-2-azaspiro[3.5]non-2-yl)pyrimidin-5-yl]-lH- 1.39 492 benzimidazole -(5-{l -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
836 benzimidazol-6-yl}pyrimidin-2-yl)-Ni,N2,2- 1.43 481 trimethylpropane-1 ,2-diamine
6- [2 -( 1 , 1 -Difluoro-5 -azaspiro [2.4] hept-5 -yl)-
837 pyrimidin-5 -yl] - 1 - [2-(difluoromethoxy)benzyl] -2- 1.58 498 methyl- lH-benzimidazole
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
838 benzimidazol-6-yl}-N-[(l -methyl-lH-pyrazol-4-yl)- 1.33 476 methyl]pyrimidin-2-amine
cis-3- { [(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-
839 methyl-lH-benzimidazol-6-yl}pyrimidin-2-yl)- 1.3 466 amino]methyl} cyclobutanol
2- {(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
840 benzimidazol-6-yl}pyrimidin-2-yl)[2-(dimethyl- 1.29 497 amino)ethyl] amino } ethanol
EXAMPLES 841 TO 859 tert-Butyl 4-[5-(4-acetamido-3-aminophenyl)pyridin-2-yl]piperazine-l - carboxylate (200 mg, 0.486 mmol) and the appropriate aldehyde were dissolved in dichloromethane, then sodium triacetoxyborohydride (155 mg, 0.729 mmol) was added portionwise. The reaction mixture was stirred at room temperature for several hours. Where necessary, sodium borohydride (45 mg, 1.189 mmol) was added and the mixture was stirred overnight. The reaction was then quenched with water. The layers were separated and the aqueous layer was extracted twice with DCM. The organic layer was dried over sodium sulphate and the solvent was removed in vacuo. The resulting material was dissolved in acetic acid (2 mL) and heated at 80°C for 6 h, then evaporated to dryness. The crude material was purified by column chromatography over silica. The resulting material was then dissolved in dichloromethane and treated with 1M HCl in diethyl ether (2 mL). The solvents were removed in vacuo to afford the title compound as the hydrochloride salt. QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
2-Methyl-l -[l -(2-methyl-l,3-thiazol-4-yl)ethyl]-6-
841 1.17 419
[6-(piperazin- 1 -yl)pyridin-3 -yl] - lH-benzimidazole
1 -[(2,5 -Dimethyl- 1 ,3 -thiazol-4-yl)methyl] -2-methyl-
842 1.51 419
6-[6-(piperazin-l -yl)pyridin-3-yl]-lH-benzimidazole
l-[2-(Difluoromethoxy)-6-fluorobenzyl]-2-methyl-6-
843 1.83 468
[6-(piperazin- 1 -yl)pyridin-3 -yl] - lH-benzimidazole
1 -[(5-Ethoxy-2-methyl- 1 ,3 -thiazol-4-yl)methyl] -2-
844 methyl-6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - 1H- 1.56 449 benzimidazole
1 - [2 -(Difluoromethoxy) -3 -methoxybenzyl] -2 -
845 methyl-6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - 1H- 1.32 480 benzimidazole
l-{(lR)-l -[5-Chloro-2-(difluoromethoxy)phenyl]-
846 ethyl}-2-methyl-6-[6-(piperazin-l -yl)pyridin-3-yl]- 497 and
1.36
499 lH-benzimidazole
1 -[2-(Difluoromethoxy)-5-methylbenzyl] -2-methyl-
847 1.35 464
6-[6-(piperazin-l -yl)pyridin-3-yl]-lH-benzimidazole
1 - {[6-(Difluoromethoxy)-l ,3-benzodioxol-5-yl]-
848 methyl}-2-methyl-6-[6-(piperazin-l-yl)pyridin-3-yl]- 1.29 494 lH-benzimidazole
1 - { ( 1 S) - 1 - [5 -chloro-2 -(difluoromethoxy)phenyl] -
849 ethyl}-2-methyl-6-[6-(piperazin-l -yl)pyridin-3-yl]- 497 and
1.36
499 lH-benzimidazole
1 -[2-(Difluoromethoxy)-5-methoxybenzyl] -2-
850 methyl-6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - 1H- 1.34 480 benzimidazole
1 -[3 -Bromo-2-(difluoromethoxy)benzyl] -2-methyl-6-
528 and
851 1.38
[6-(piperazin- 1 -yl)pyridin-3 -yl] - lH-benzimidazole 530
1 -[2-(Difluoromethoxy)-4-methoxybenzyl] -2-
852 methyl-6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - 1H- 1.31 480 benzimidazole
l-[3,5-Dichloro-2-(difluoromethoxy)benzyl]-2-
853 methyl-6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - 1H- 518, 520
1.43
and 522 benzimidazole 1 -[2-Chloro-6-(trifluoromethoxy)benzyl] -2-methyl-
501 and
854 1.44
6-[6-(piperazin-l -yl)pyridin-3-yl]-lH-benzimidazole 503 l-[2-(Difluoromethoxy)-5-fluorobenzyl]-2-methyl-6-
855 1.39 468
[6-(piperazin- 1 -yl)pyridin-3 -yl] - lH-benzimidazole
l-[2-(Difluoromethoxy)-3-fluorobenzyl]-2-methyl-6-
856 1.4 468
[6-(piperazin- 1 -yl)pyridin-3 -yl] - lH-benzimidazole
1 - [2 -(Difluoromethoxy) -3 , 5 -difluorobenzyl] -2-
857 methyl-6- [6-(piperazin- 1 -yl)pyridin-3 -yl] - 1H- 1.41 486 benzimidazole
l-[2-Chloro-5-(difluoromethoxy)benzyl]-2-methyl-6-
483 and
858 1.38
[6-(piperazin- 1 -yl)pyridin-3 -yl] - lH-benzimidazole 485 l-[2,5-Bis(difluoromethoxy)benzyl]-2-methyl-6-[6-
859 1.36 516
(piperazin- 1 -yl)pyridin-3 -yl] - lH-benzimidazole
EXAMPLES 860 TO 867
The following compounds can be synthesized from Intermediate 69 and the appropriate amidine in accordance with the experimental protocol described for Example 534.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
6-(2 -Cyclopentyl-4 -methylpyrimidin-5 -yl) - 1 - [2 -
860 (difluoromethoxy)benzyl]-2-methyl-lH- 1.63 449 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [4 -
861 methyl-2-(tetrahydrofuran-2-yl)pyrimidin-5-yl]-lH- 1.4 451 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [4 -
862 methyl-2-(propan-2-yl)pyrimidin-5-yl]-lH- 1.53 423 benzimidazole
6-(2 -Cyclopropyl-4 -methylpyrimidin-5 -yl) - 1 - [2 -
863 (difluoromethoxy)benzyl]-2-methyl-lH- 1.49 421 benzimidazole
864 1 - [2 -(Difluoromethoxy)benzyl] -6 - [2 -(methoxy- 1.32 425 methyl) -4 -methylpyrimidin-5 -yl] -2-methyl- 1 H- benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [4 -
865 methyl-2-(2-methylpropyl)pyrimidin-5-yl]-lH- 1.55 437 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -6 - [2 -(2 -methoxy-
866 ethyl)-4-methylpyrimidin-5-yl] -2-methyl- 1H- 1.37 439 benzimidazole
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl-6 - [4 -
867 methyl-2-(morpholin-4-ylmethyl)pyrimidin-5-yl]- 1.31 480 lH-benzimidazole
EXAMPLES 868 TO 882
The following compounds can be synthesized from Intermediate 40 and the appropriate carboxylic acid in accordance with Method J.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
1 -( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H-
868 1.32 440 benzimidazol-2-yl}methyl)piperidine-4-carboxamide
1 -[2-(Difluoromethoxy)benzyl] -2-[(2,6-dimethoxy-
869 1.60 466 phenoxy)methyl]-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-(pyrazin-2-yl-
870 1.36 392 methyl)-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-[(propan-2-yloxy)-
871 1.55 372 methyl]-lH-benzimidazole-6-carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 - [( 1 S) - 1 -methoxy-
872 1.47 358 ethyl]-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [6-(5-ethoxy-
873 4H- 1 ,2,4-triazol-3 -yl)pyridin-3 -yl] oxy } methyl) - 1H- 1.4 518 benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2- { [(6-oxo-l ,6-
874 dihydropyridin-3-yl)oxy]methyl}-lH-benzimidazole- 1.29 423
6-carbonitrile 2-[(2-Amino- 1 ,3 -thiazol-4-yl)methyl] -1 -[2-(trifluoro-
875 1.46 430 methoxy)benzyl] - lH-benzimidazole-6-carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 - { [(4 -oxo -
876 cyclohexyl)oxy]methyl}-lH-benzimidazole-6- 1.46 426 carbonitrile
N-(2- {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H-
877 1.42 437 benzimidazol-2-yl}ethyl)furan-3-carboxamide
1 -[2-(Difluoromethoxy)benzyl] -2-[(trifluoro-
878 1.57 398 methoxy)methyl]-lH-benzimidazole-6-carbonitrile
1 - [4 -( { 6 -Cyano - 1 - [2 -(difluoromethoxy)benzyl] - 1 H-
879 benzimidazol-2-yl } methyl)- 1 ,3 -thiazol-2-yl] -3 - 1.42 495 cyclopropylurea
1 - [2 -(Difluoromethoxy)benzyl] -2 - { [2 -(2 -oxo -
880 pyrrolidin-l-yl)-l,3-thiazol-4-yl]methyl}-lH- 1.51 480 benzimidazole-6-carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
881 1.39 314 benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-(pyridin-4-yl-
882 1.32 391 methyl)-lH-benzimidazole-6-carbonitrile
EXAMPLES 883 TO 896
Under a nitrogen atmosphere, Intermediate 115 (0.102 mmol) was dissolved in degassed dry toluene (4 mL). ΒΙΝΑΡ (0.020 mmol), cesium carbonate (0.204 mmol), the appropriate amide, urea or sulphonamide (0.122 mmol) and palladium acetate (0.015 mmol) were added and the reaction mixture was heated at 90°C for 18 h. The reaction mixture was evaporated in vacuo, suspended in water (2 mL) and extracted with DCM (2 x 4 mL). The organic layers were evaporated to dryness, dissolved in DMSO (1 mL), and purified by preparative mass-directed HPLC, to provide the title compound.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
N-[5-({5-Fluoro-l-[(15)-l-(4-fluorophenyl)ethyl]-6-
883 (6-methoxypyridin-3 -yl) - 1 H-benzimidazol-2-yl } - 1.51 514 methyl)pyridin-2-yl] acetamide l-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6-
884 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - 1.51 540 methyl)pyridin-2-yl]imidazolidin-2-one
4-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6-
885 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - 1.55 556 methyl)pyridin-2-yl]morpholin-3-one
N-[5-({5-Fluoro-l -[(lS)-l-(4-fluorophenyl)ethyl]-6-
886 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - 1.60 564 methyl)pyridin-2-yl]-N-methylmethanesulfonamide
3-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6-
887 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - 1.58 542 methyl)pyridin-2-yl] - 1 ,3 -oxazolidin-2-one
l-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6-
888 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - 1.6 528 methyl)pyridin-2-yl]pyrrolidin-2-one
N-[5-({5-Fluoro-l -[(lS)-l-(4-fluorophenyl)ethyl]-6-
889 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - 1.51 528 methyl)pyridin-2-yl]-N-methylacetamide
2- { [6-(l , 1 -Dioxidoisothiazolidin-2-yl)pyridin-3-yl] -
890 methyl}-5-fluoro-l -[(lS)-l -(4-fluorophenyl)ethyl]-6- 1.57 576
(6-methoxypyridin-3 -yl)- 1 H-benzimidazole
l-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6-
891 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - 1.56 526 methyl)pyridin-2-yl]azetidin-2-one
6-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6- (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } -
892 1.54 582 methyl)pyridin-2-yl]-2-oxa-6-azaspiro[3.4]octan-7- one
l-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6- (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } -
893 1.5 570 methyl)pyridin-2-yl]-5-(hydroxymethyl)pyrrolidin-2- one
l-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6-
894 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - 1.64 554 methyl)pyridin-2-yl]-5-methylpyrrolidin-2-one
895 6-[5 - ( {5 -Fluoro- 1 - [( 1 S)- 1 -(4-fluorophenyl)ethyl] -6- 1.66 566 (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } - memyl)pyridin-2-yl]-6-azabicyclo[3.2.0]heptan-7- one
l-[5-({5-Fluoro-l-[(lS)-l-(4-fluorophenyl)ethyl]-6- (6-methoxypyridin-3 -yl)- 1 H-benzimidazol-2-yl } -
896 1.49 570
methyl)pyridin-2-yl]-4-(hydroxymethyl)pyrrolidin-2- one
EXAMPLES 897 TO 904 (METHOD T)
To a stirred solution of 5-bromopyridine-2-carboxylic acid (0.2 g, 1.0 mmol) in DCM (5 mL) were added HATU (0.56 g, 1.4 mmol) and DIPEA (0.3 g, 2.9 mmol). The reaction mixture was stirred for 10 minutes at 0°C, followed by the addition of the appropriate amine (1.1 mmol). The reaction mass was stirred at 25-28°C for 18 h, after which time the reaction mixture was diluted with DCM (50 mL) and washed with water (two portions of 30 mL). The organic layer was dried over Na2S04 and concentrated under vacuum. The resulting material was utilised without further purification in a palladium-catalysed coupling reaction with Intermediate 57 in accordance with Method L.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
897 benzimidazol-6-yl}pyridin-2-yl)(thiomorpholin-4- 1.43 495
yl)methanone
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
898 benzimidazol-6-yl}-N,N-dimethylpyridine-2- 1.33 437
carboxamide
(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
899 benzimidazol-6-yl}pyridin-2-yl)(morpholin-4-yl)- 1.31 479
methanone
(5- { 1 -[2-(Difluoromemoxy)benzyl]-2-methyl-lH-
900 benzimidazol-6-yl}pyridin-2-yl)(4-memylpiperazin- 1.29 492
1 -yl)methanone
(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
901 1.23 478
benzimidazol-6-yl}pyridin-2-yl)(piperazin-l -yl)- methanone
(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
902 benzimidazol-6-yl}pyridin-2-yl)(l,l-dioxido- 1.33 527 thiomorpholin-4-yl)methanone
5 - { 1 - [2 -(Difluoromethoxy)benzyl] -2 -methyl- 1 H-
903 benzimidazol-6-yl}-N-(2-hydroxyethyl)pyridine-2- 1.3 453 carboxamide
(5- { 1 -[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
904 benzimidazol-6-yl}pyridin-2-yl)[3-(hydroxymethyl)- 1.29 479 azetidin- 1 -yljmethanone
EXAMPLES 905 TO 920
A suspension of the appropriate amide, urea or sulphonamide (0.150 mmol), Intermediate 65 or 110 (0.125 mmol), BINAP (0.025 mmol) and cesium carbonate (0.2 mmol) in toluene (5 mL) was degassed with argon while stirring for 15 minutes.
Palladium(II) acetate (0.020 mmol) was added and the reaction mixture was heated at 90°C for 18 h. The reaction mixture was washed with water (2 x 2 mL). The organic layer was evaporated in vacuo. The crude material was purified by preparative mass- directed HPLC to provide the title compound.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
905 benzimidazol-6-yl}pyridin-2-yl)-4-methylpiperazin- 1.36 478
2-one
1 -[2-(Difluoromethoxy)benzyl] -6-[6-(l , 1 -dioxido-
906 isothiazolidin-2 -yl)pyridin-3 -yl] -2 -methyl- 1 H- 1.42 485 benzimidazole
1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
907 1.46 449 benzimidazol-6-yl}pyridin-2-yl)pyrrolidin-2-one
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
908 benzimidazol-6-yl}pyridin-2-yl)-N-methyl- 1.46 473 methanesulfonamide
909 1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- 1H- 1.35 464 benzimidazol-6 -yl } pyrimidin-2 -yl)piperidin-2 -one
1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
910 1.35 450 benzimidazol-6-yl}pyridin-2-yl)imidazolidin-2-one
1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
911 benzimidazol-6-yl}pyrimidin-2-yl)-5-methyl- 1.39 464 pyrrolidin-2-one
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
912 benzimidazol-6-yl}pyrimidin-2-yl)-N-methyl- 1.39 438 acetamide
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
913 1.35 423 benzimidazol-6-yl}pyridin-2-yl)acetamide
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
914 benzimidazol-6-yl}pyrimidin-2-yl)-N-methyl- 1.38 474 methanesulfonamide
N-(5 - { 1 - [2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
915 1.26 424 benzimidazol-6-yl}pyrimidin-2-yl)acetamide
6-(5- {l-[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
916 benzimidazol-6-yl}pyridin-2-yl)-2-oxa-6-azaspiro- 1.36 491
[3.4]octan-7-one
4-(5- {l-[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
917 1.39 465 benzimidazol-6-yl}pyridin-2-yl)morpholin-3-one
1 -(5- { 1 -[2-(Difluoromethoxy)benzyl] -2-methyl- 1H-
918 1.34 450 benzimidazol-6 -yl } pyrimidin-2 -yl)pyrrolidin-2 -one
1 -[2-(Difluoromethoxy)benzyl] -6-[2-(l , 1 -dioxido-
919 isothiazolidin-2-yl)pyrimidin-5-yl]-2-methyl-lH- 1.35 486 benzimidazole
4-(5- {l-[2-(Difluoromethoxy)benzyl]-2-methyl-lH-
920 1.3 466 benzimidazol-6-yl}pyrimidin-2-yl)morpholin-3-one
EXAMPLES 921 TO 934
A suspension of the appropriate amide or sulphonamide (0.250 mmol), Intermediate 109 (0.227 mmol), ΒΙΝΑΡ (0.045 mmol) and cesium carbonate (0.340 mmol) in toluene (5 mL) was degassed with argon while stirring for 15 minutes. Palladium(II) acetate (0.034 mmol) was added and the reaction mixture was heated at 90°C for 18 h. The reaction mixture was washed with water (2 x 2 mL). The aqueous layers were combined and extracted with EtOAc (2 x 3 mL). The combined organic layers were washed with brine (2 mL) and evaporated in vacuo. The crude material was purified by preparative mass-directed HPLC to provide the title compound.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+ l-[2-(Difluoromemoxy)benzyl]-2-[({2-[(3S)-3-
921 hydroxy-2-oxopyrrolidin-l -yl]pyridin-4-yl} oxy)- 1.37 506 methyl]-lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(2-methyl-5-
922 oxopyrrolidin- 1 -yl)pyridin-4-yl] oxy } methyl)- 1H- 1.52 504 benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(4-methyl-2-
923 oxopyrrolidin- 1 -yl)pyridin-4-yl] oxy } methyl)- 1H- 1.54 504 benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(4-methyl-2-
924 oxopiperazin- 1 -yl)pyridin-4-yl] oxy } methyl)- 1H- 1.38 519 benzimidazole-6-carbonitrile
N-[4-( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H-
925 1.39 464 benzimidazol-2-yl } methoxy)pyridin-2-yl] acetamide
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(2-oxo-
926 piperidin- 1 -yl)pyridin-4-yl] oxy } methyl)- 1H- 1.41 504 benzimidazole-6-carbonitrile
1 - [2 -(Difluoromethoxy)benzyl] -2 - [( {2 - [2 -(hydroxy-
927 memyl)-5-oxopyrrolidin-l-yl]pyridin-4-yl}oxy)- 1.39 520 methyl]-lH-benzimidazole-6-carbonitrile
N-[4-( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H-
928 benzimidazol-2-yl } methoxy)pyridin-2-yl] -N-methyl- 1.48 514 methanesulfonamide
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(7-oxo-2-oxa-
929 6-azaspiro [3.4] oct-6 -yl)pyridin-4 -yl] oxy } methyl) - 1.42 532 lH-benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(2-oxo-
930 1.44 476 azetidin- 1 -yl)pyridin-4-yl] oxy } methyl)- 1H- benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(7-oxo-6-
931 azabicyclo[3.2.0]hept-6-yl)pyridin-4-yl]oxy} - 1.55 516 methyl) - lH-benzimidazole-6-carbonitrile
2-( { [2-(3 -Amino-2-oxopyrrolidin- 1 -yl)pyridin-4-yl]-
932 oxy} methyl)- 1 -[2-(difluoromethoxy)benzyl] - 1H- 1.35 505 benzimidazole-6-carbonitrile
1 -[2-(Difluoromethoxy)benzyl] -2-( { [2-(l , 1 -dioxido-
933 isothiazolidin-2-yl)pyridin-4-yl]oxy}methyl)-lH- 1.43 526 benzimidazole-6-carbonitrile
N-[4-( {6-Cyano- 1 -[2-(difluoromethoxy)benzyl] - 1H-
934 benzimidazol-2-yl}methoxy)pyridin-2-yl]-N-methyl- 1.37 478 acetamide
EXAMPLES 935 TO 963
The following compounds can be synthesized from Intermediate 46 and the appropriate carboxylic acid in accordance with Method J.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
2-[(2,6-Dimethoxyphenoxy)methyl] - 1 - [( 1 S)- 1 -
935 1.63 414 phenylethyl]-lH-benzimidazole-6-carbonitrile
1 -[( \S)-\ -Phenylethyl] -2- { [4-(trifluoromethoxy)-
936 1.74 438 phenoxy] methyl} - lH-benzimidazole-6-carbonitrile
1 -( {6-Cyano- 1 - [( 1 S)- 1 -phenylethyl] - \H-
937 benzimidazol-2-yl}methyl)-lH-pyrazole-4- 1.3 407 sulfonamide
2- {[4-(2-Oxopyrrolidin-l -yl)phenoxy] methyl} -1 -
938 [(15)-l -phenylethyl]-lH-benzimidazole-6- 1.49 437 carbonitrile
2-[3 -(Methylsulfonyl)benzyl] - 1 - [( 1 S)- 1 -phenyl-
939 1.45 416 ethyl]-lH-benzimidazole-6-carbonitrile
2-[(Cyclopropylmethoxy)methyl] - 1 - [( 1 S)- 1 -phenyl-
940 1.59 332 ethyl]-lH-benzimidazole-6-carbonitrile 2-[4-(Methylsulfonyl)benzyl]-l-[(lS)-l -phenyl-
941 1.43 416 ethyl]-lH-benzimidazole-6-carbonitrile
l-[(lS)-l -Phenylethyl]-2-[4-(lH-tetrazol-l-yl)-
942 1.46 406 benzyl]-lH-benzimidazole-6-carbonitrile
l-[4-({6-Cyano-l -[(lS)-l -phenylethyl]-lH-
943 1.35 396 benzimidazol-2-yl}methyl)phenyl]urea
l-[(lS)-l -Phenylethyl]-2-([l,2,4]triazolo[l,5-fl]-
944 pyrimidin-2-ylmethyl)-lH-benzimidazole-6- 1.3 380 carbonitrile
l-[(lS)-l -Phenylethyl]-2-(piperidin-l -ylmethyl)-lH-
945 1.71 345 benzimidazole-6-carbonitrile
2-(Cyclopentylmethyl)- 1 - [( 1 S)- 1 -phenylethyl] - 1H-
946 1.67 330 benzimidazole-6-carbonitrile
N-[5 -( {6-Cyano- 1 - [( 1 S)- 1 -phenylethyl] - 1H-
947 1.4 412 benzimidazol-2-yl } methoxy)pyridin-2-yl] acetamide
2-[(2-Methyl-lH-benzimidazol-5-yl)methyl]-l -[(lS)-
948 1.36 392 l-phenylethyl]-lH-benzimidazole-6-carbonitrile
2- { [(6-Cyano-5-methylpyridin-3 -yl)oxy]methyl} - 1 -
949 [(15)-l -phenylethyl]-lH-benzimidazole-6- 1.54 394 carbonitrile
l-[(lS)-l -Phenylethyl]-2-(tetrahydro-2H-pyran-4-yl-
950 1.46 346 methyl)-lH-benzimidazole-6-carbonitrile
2-[(2-Amino-4,6-dimethylpyrimidin-5-yl)methyl]-l -
951 [(15)-l -phenylethyl]-lH-benzimidazole-6- 1.35 383 carbonitrile
2-[2-(5-Oxo-3-thioxo-2,3,4,5-tetrahydro-l,2,4-
952 triazin-6-yl)ethyl] - 1 - [( 1 S) - 1 -phenylethyl] - 1 H- 1.18 403 benzimidazole-6-carbonitrile
2-[4-(Difluoromethoxy)benzyl]-l -[(1S)-1 -phenyl-
953 1.63 404 ethyl]-lH-benzimidazole-6-carbonitrile
l-(4- {6-Cyano-l-[(lS)-l -phenylethyl]-lH-
954 1.29 362 benzimidazol-2-yl } butyl)urea
N-({6-Cyano-l -[(lS)-l-phenylethyl]-lH-
955 benzimidazol-2-yl}methyl)-5-hydroxypyridine-3- 1.19 398 carboxamide
956 1 -[( 1S)-1 -Phenylethyl] -2-(pyrazin-2-ylmethyl)- 1H- 1.37 340 benzimidazole-6-carbonitrile
2- {[(2-Oxo-l, 2,3,4-tetrahydroquinolin-6-yl)oxy]-
957 methyl} - 1 - [( 1 S)- 1 -phenylethyl] - lH-benzimidazole- 1.43 423
6-carbonitrile
N-(2- {6-Cyano- 1 - [( 1 S)- 1 -phenylethyl] - 1H-
958 1.34 396 benzimidazol-2-yl}ethyl)pyridine-4-carboxamide
1 -[( 1S)-1 -Phenylethyl] -2- { [4-(pyrimidin-2-yl)-
959 piperazin-l-yl]methyl}-lH-benzimidazole-6- 1.55 424 carbonitrile
2-( 1 -Methoxypropyl)- 1 - [( 1 S)- 1 -phenylethyl] - 1H-
960 1.56 320 benzimidazole-6-carbonitrile
l-[(lS)-l-Phenylethyl]-2-(tetrahydro-2H-pyran-3-yl-
961 1.49 346 methyl)-lH-benzimidazole-6-carbonitrile
N-(2- {6-Cyano- 1 - [( 1 S)- 1 -phenylethyl] - 1H-
962 1.4 385 benzimidazol-2-yl}ethyl)furan-3-carboxamide
2-[(2-Amino- 1 ,3 -thiazol-4-yl)methyl] -1 -[( 1S)-1 -
963 1.36 360 phenylethyl]-lH-benzimidazole-6-carbonitrile
EXAMPLES 964 TO 973
The following compounds can be synthesized by a sequence of steps
corresponding to the preparation of Intermediate 46, commencing from 4-cyano-2-fluoro- nitrobenzene and (5-chloro-2-methylthiazol-4-yl)methanamine, followed by cyclisation with the appropriate carboxylic acid in accordance with Method J.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+ l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
964 [(tetrahydrofuran-3 -ylmethoxy)methyl] - 1H- 402 and
1.43
404 benzimidazole-6-carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-[4-
965 (methylsulfonyl)benzyl]-lH-benzimidazole-6- 456 and
1.4
458 carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
396 and
966 1.36
[(3,5-dimethyl-lH-pyrazol-4-yl)methyl]-lH- 398 benzimidazole-6-carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
967 { [2-(pyridin-3-yl)- 1 ,3 -thiazol-4-yl]methyl} -1H- 462 and
1.46
464 benzimidazole-6-carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
968 { [3 -(methylsulfonyl)phenoxy] methyl } - 1 H- 472 and
1.46
474 benzimidazole-6-carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
969 { [3-(2-oxopyrrolidin- 1 -yl)phenoxy] methyl} - 1H- 477 and
1.51
479 benzimidazole-6-carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
970 {[2-(2-oxoimidazolidin-l-yl)-l,3-thiazol-4-yl]- 469 and
1.34
471 methyl} - lH-benzimidazole-6-carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
449 and
971 {[(3-oxo-2,3-dihydro-lH-isoindol-5-yl)oxy]methyl}- 1.37
451 lH-benzimidazole-6-carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
972 [(cyclopropylmethoxy)methyl]-lH-benzimidazole-6- 372 and
1.57
374 carbonitrile
l-[(5-Chloro-2-methyl-l,3-thiazol-4-yl)methyl]-2-
973 (pyridin-4-ylmethyl)-lH-benzimidazole-6- 379 and
1.32
381 carbonitrile
EXAMPLES 974 TO 986
The following compounds can be synthesized from Intermediate 44 and the appropriate carboxylic acid in accordance with Method J.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
2- { [3 -(Methylsulfonyl)phenoxy]methyl} - 1 - [( 1R)- 1 -
974 1.48 432 phenylethyl]-lH-benzimidazole-6-carbonitrile
2-[(2-Methyl- 1 ,3 -thiazol-4-yl)methyl] - 1 -[( \R)- 1 -
975 1.46 359 phenylethyl]-lH-benzimidazole-6-carbonitrile
976 2-(Ethoxymethyl)- 1 - [( 1R)- 1 -phenylethyl] -1H- 1.51 306 benzimidazole-6-carbonitrile
2-[(Cyclopropylmethoxy)methyl] - 1 - [( 1R)- 1 -phenyl-
977 1.56 332 ethyl]-lH-benzimidazole-6-carbonitrile
2- {[4-(2-Oxopyrrolidin-l -yl)phenoxy] methyl} -1 -
978 [( 1 R) - 1 -phenylethyl] - 1 H-benzimidazole-6 - 1.5 437 carbonitrile
2-{[(5-Methylisoxazol-3-yl)oxy]methyl} -1 -[(1R)-1 -
979 1.51 359 phenylethyl]-lH-benzimidazole-6-carbonitrile
2-[(2-Methyl- lH-imidazol- 1 -yl)methyl]- 1 -[( \R)- 1 -
980 1.32 342 phenylethyl]-lH-benzimidazole-6-carbonitrile
l-[(lR)-l-Phenylethyl]-2-(pyrazin-2-ylmethyl)-lH-
981 1.36 340 benzimidazole-6-carbonitrile
2- {[(2-Oxo-l, 2,3,4-tetrahydroquinolin-6-yl)oxy]-
982 methyl} - 1 -[( 1R)- 1 -phenylethyl]- lH-benzimidazole- 1.45 423
6-carbonitrile
2-[3-(Methylsulfonyl)benzyl]-l-[(lR)-l-phenyl-
983 1.44 416 ethyl]-lH-benzimidazole-6-carbonitrile
2-[4-(Methylsulfonyl)benzyl] - 1 -[( 1R)-1 -phenyl-
984 1.43 416 ethyl]-lH-benzimidazole-6-carbonitrile
2-(2-Methoxyethyl)- 1 -[( 1R)- 1 -phenylethyl]- 1H-
985 1.42 306 benzimidazole-6-carbonitrile
l-[(lR)-l-Phenylethyl]-2-[4-(lH-tetrazol-l-yl)-
986 1.46 406 benzyl]-lH-benzimidazole-6-carbonitrile
EXAMPLES 987 TO 995
The following compounds can be synthesized from Intermediate 42 and the appropriate carboxylic acid in accordance with Method J.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+
2-(Cyclohexylmethyl)-l-(2,5-dichlorobenzyl)-lH-
398,400
987 1.81
benzimidazole-6-carbonitrile and 402 l-(2,5-Dichlorobenzyl)-2-{[4-(lH-tetrazol-l-yl)-
476, 478
988 1.52
phenoxy] methyl} - lH-benzimidazole-6-carbonitrile and 480 l-(2,5-Dichlorobenzyl)-2-{[4-(2-oxopyrrolidin-l-yl)-
491, 493
989 1.54
phenoxy]methyl} - lH-benzimidazole-6-carbonitrile and 495
990 - - - l-(2,5-Dichlorobenzyl)-2-(l-hydroxyethyl)-lH-
346, 348
991 1.42
benzimidazole-6-carbonitrile and 350 l-(2,5-Dichlorobenzyl)-2-(difluoromethyl)-lH-
352, 354
992 1.59
benzimidazole-6-carbonitrile and 356 l-(2,5-Dichlorobenzyl)-2-[(lS)-l-methoxyethyl]-lH-
360, 362
993 1.57
benzimidazole-6-carbonitrile and 364 l-(2,5-Dichlorobenzyl)-2-[(piperidin-4-yloxy)-
415, 417
994 1.33
methyl]-lH-benzimidazole-6-carbonitrile and 419 l-(2,5-Dichlorobenzyl)-2-[(piperidin-3-yloxy)-
415, 417
995 1.4
methyl]-lH-benzimidazole-6-carbonitrile and 419
EXAMPLES 996 TO 1002
The following compounds can be synthesized from Intermediate 48 and the appropriate boronic acid or ester in accordance with Method L.
QC LCMS Mass Ion
Example Compound Name
RT (min) (M+H)+ l-(2,5-Dichlorobenzyl)-2-methyl-6-(pyridin-4-yl)-
368, 370
996 2.04
lH-benzimidazole and 372 l-(2,5-Dichlorobenzyl)-2-methyl-6-(pyridin-3-yl)-
368, 370
997 2.14
lH-benzimidazole and 372
1 -(2,5-Dichlorobenzyl)-2-methyl-6-(l -methyl- 1H-
371, 373
998 2.04
pyrazol-4-yl)-lH-benzimidazole and 375
1 -(2,5-Dichlorobenzyl)-2-methyl-6-(l -oxidopyridin-
384, 386
999 1.78
3-yl)-lH-benzimidazole and 388
4-[l-(2,5-Dichlorobenzyl)-2-methyl-lH-
384, 386
1000 1.29
benzimidazol-6-yl]pyridin-2(lH)-one and 388 l-(2,5-Dichlorobenzyl)-2-methyl-6-(pyrazin-2-yl)-
369, 371
1001 1.42
lH-benzimidazole and 373
1 -(2,5-Dichlorobenzyl)-2-methyl-6-(l -methyl- 1H-
371, 373
1002 1.42
pyrazol-3-yl)-lH-benzimidazole and 375 EXAMPLES 1003 TO 1006
The following compounds can be synthesized from Intermediate 2 and the appropriate aldehyde in accordance with Method C.
Figure imgf000286_0001
EXAMPLE 1007 Methyl (16'.5i?.8r -3-r5-(l-(r5-chloro-2-(difluoromethoxy phenyl1methyl| -2-methyl- benzimidazol-6-yl)pyrimidin-2-yl"|-3-azabicyclo[3.2.1 ]octane-8-carboxylate
Prepared from Intermediate 49 and Intermediate 85 according to Method L, giving the title compound (510 mg) as a pale powder. δΗ (300 MHz, DMSO-d6) 8.66 (s, 2H), 7.72 (m, H), 7.62 (d, H), 7.46 (m, H), 7.48 (t, IH, J 74 Hz), 7.30 (d, IH, J 8.8 Hz), 6.79 (d, H, J 3.0 Hz), 5.51 (s, 2H), 4.43(dd, 2H, J 12.9, 3.4 Hz), 3.63 (s, 3H), 3.33 (s, 3H), 3.02 (d, H, J 12.1 Hz), 2.78 (s, IH), 2.61 (s, 2H), 1.66 (m, 2H), 1.40 (m, 2H). QC LCMS mlz 569, RT 1.67 minutes.
EXAMPLE 1008
Sodium (16',5i?,8r)-3-[5-(l-([5-chloro-2-(difluoromethoxy)phenyllmethyl| -2-methyl- benzimidazol-6-yl)pyrimidin-2-yl1-3-azabicvclor3.2.1 loctane-8-carboxylate
A solution of Example 1007 (485 mg, 0.85 mmol) in THF (5 mL) and methanol (5 mL) was treated with aqueous NaOH solution (10% w/v, 3 mL) and heated at 70°C for 2 h. The mixture was concentrated in vacuo (to 3 mL) and acidified by addition of AcOH (to pH approximately 4.5), then the resulting grey solid precipitate was collected by filtration. The crude solid was suspended in water (50 mL) and treated with aqueous NaOH solution (10% w/v, 370 μί, 0.85 mmol) and MeCN (20 mL), then freeze-dried, to give the title compound (429 mg, 87%) as a white solid. QC LCMS mlz 554, RT
1.21minutes.
EXAMPLE 1009 4- Amino- 1 - Γ5 -( 1 - ( Γ5 -chloro-2-(difluoromethoxy)phenyl1methyl| -2-methylbenzimidazol-
6-yl)pyrimidin-2-yllpiperidine-4-carboxylic acid hydrochloride
Prepared from Intermediate 49 and Intermediate 94 according to Method L, followed by treatment with 6M HC1 in 1,4-dioxane, to give the title compound (315 mg) as a beige solid. δΗ (300 MHz, DMSO-d6) 8.78 (m, 5H), 8.12 (s, 1H), 7.87 (s, 2H), 7.60 (t, 1H, J74 Hz), 7.50-7.57 (m, 2H), 7.31 (d 1H), 5.75 (s, 2H), 4.1 l(m, 2H), 3.92 (m, 2H),
2.84 (s, 3H), 2.10 (m, 2H), 1.92 (m, 2H). QC LCMS mlz 543, RT 1.18 minutes.
EXAMPLE 1010 1 -Γ5-(1 - i(lR)- 1 -r2-(difluoromethoxy)phenyl1ethyl| -2-methylbenzimidazol-6-yl)- pyrimidin-2-yllpiperidine-4-carboxylic acid
The title compound can be synthesised from Example 1058 and l-(5-borono- pyrimidin-2-yl)piperidine-4-carboxylic acid in accordance with Method L. QC LCMS mlz 509, RT 1.17 minutes.
EXAMPLE 1011
N-(2,3-Dihvdro- lH-inden-2-vn- 1 -(2,5-dimethylbenzyl -2-(hvdroxymethvn- 1H- benzimidazole-6-carboxamide
To a stirred solution of Intermediate 99 (100 mg, 0.32 mmol) in DCM:DMF (1 : 1;
6 mL) was added HATU (135 mg, 0.35 mmol) at 0°C, followed by the addition of indan- 2-amine (42 mg, 0.32 mmol) and DIPEA (49 μί, 0.48 mmol). The reaction mixture was stirred for 12 h at 25-31°C. The reaction mixture was diluted with water (60 mL) and extracted with ethyl acetate (three portions of 10 mL). The organic layer was
concentrated in vacuo and the residue was purified by preparative HPLC to give the title compound. QC LCMS mlz 426, RT 2.34 minutes.
EXAMPLE 1012 l-(2,5-Dichlorobenzyl)-2-methyl-N-(pyridin-4-yl)-lH-benzimidazole-6-carboxamide
The title compound was prepared from Intermediate 100 and 4-aminopyridine by a method analogous to that described for Example 1011. QC LCMS mlz 412, RT 1.34 minutes.
EXAMPLE 1013 l-(2,5-Dichlorobenzyl)-6-methoxy-2-methyl-lH-benzimidazole
The title compound can be synthesised from 2-fluoro-4-methoxynitrobenzene and 2,5-dichlorobenzylamine according to the procedure described for Intermediate 47. 5H (DMSO-dg) 7.60 (d, J 8.4 Hz, IH), 7.47-7.01 (m, 3H), 7.01 (d, J2 Hz, IH), 6.40 (d, J2.4 Hz, IH), 5.50 (s, 2H), 3.72 (s, 3H), 2.40 (s, 3H). QC LCMS mlz 321 [M+H]+, RT 1.53 minutes.
EXAMPLE 1014 l-(2,5-Dichlorobenzyl)-2-methyl-lH-benzimidazol-6-yl 2-methylpropane-l -sulfonate To a solution of Intermediate 101 (0.1 g, 0.26 mmol) in DCM (4 mL) was added triethylamine (0.077 g, 0.76 mmol) at 0°C. The resulting mixture was stirred for 10 minutes, then 2-methylpropanesulfonyl chloride (97 mg, 0.63 mmol) was added. The reaction mixture was allowed to stir at ambient temperature for 18 h, after which time the reaction mixture was quenched with water (5 mL) and extracted with DCM (10 mL). The combined organic layer was washed with brine (2 x 20 mL), dried (Na2S04), and concentrated. The crude material was purified using column chromatography on silica gel, eluting with methanol in DCM (8% v/v), to give the title compound. QC LCMS mlz 427, RT 1.61 minutes. EXAMPLE 1015
1 -(2,5-Dichlorobenzyl)-2-methyl- lH-benzimidazol-6-yl ethanesulfonate
The title compound was prepared from Intermediate 101 and ethanesulphonyl chloride according to the procedure described for Example 1014. QC LCMS mlz 399, RT 1.49 minutes.
EXAMPLE 1016 1 -(2,5-DichlorobenzvD-2-methyl- lH-benzimidazol-6-yl 3 ,3 ,3 -trifluoropropane- 1 - sulfonate
The title compound was prepared from Intermediate 101 and 3,3,3-trifluoro- propane- 1-sulfonyl chloride according to the procedure described for Example 1014. QC LCMS mlz 467, RT 1.59 minutes.
EXAMPLE 1017
1 -(2,5-Dichlorobenzyl)-2-methyl- lH-benzimidazol-6-yl propane- 1 -sulfonate
The title compound was prepared from Intermediate 101 and propane- 1-sulfonyl chloride according to the procedure described for Example 1014. QC LCMS mlz 413, RT 1.56 minutes.
EXAMPLE 1018 6-(Azetidin-3-yloxy)- 1 -(2,5-dichlorobenzyl)-2-methyl- lH-benzimidazole
A solution of Intermediate 102 in dichloromethane was treated with trifluoroacetic acid (5: 1 v:v), stirring at ambient temperature until the reaction was complete. The volatiles were removed in vacuo. The free base was isolated by dissolving the residue in dichloromethane and treating with a saturated aqueous solution of sodium bicarbonate. The organics were further washed with brine, dried with anhydrous sodium sulphate, filtered and concentrated in vacuo, to give the title compound. QC LCMS mlz 362, RT 1.31 minutes. EXAMPLE 1019 fert-Butyl 3-(([l-(2,5-dichlorobenzyl)-2-methyl-lH-benzimidazol-6-ylloxy|methyl)- pyrrolidine- 1 -carboxylate
The title compound was obtained from Intermediate 101 and tert- v y\ 3-(bromo- methyl)pyrrolidine-l -carboxylate by a method analogous to that used to prepare
Intermediate 102. QC LCMS mlz 490, RT 1.66 minutes.
EXAMPLE 1020
1 -[3-( ([ 1 -(2,5-dichlorobenzyl)-2-methyl- lH-benzimidazol-6-ylloxy|methyl)pyrrolidin- 1 - yl]ethanone
Prepared from Example 1019 by treatment with trifluoroacetic acid as described for Example 1018, followed by treatment with 1.5 equivalents of triethylamine and acetic anhydride in dichloromethane. The reaction mixture was stirred at ambient temperature until complete. The reaction mixture was quenched with water, the organic layers were separated, dried with anhydrous sodium sulphate, and filtered, then the solvents were removed in vacuo to afford the title compound. QC LCMS mlz 432, RT 1.39 minutes.
EXAMPLE 1021 l-[3-(([l-(2,5-Dichlorobenzyl)-2-methyl-lH-benzimidazol-5-ylloxy|methyl)pyrrolidin- 1-vHethanone
The title compound was prepared from Intermediate 103 using the method described for the preparation of Example 1020. QC LCMS mlz 432, RT 1.45 minutes.
EXAMPLE 1022 l-(2,5-Dichlorobenzyl)-5-r(6-methoxypyridin-3-yl)oxy1-2-methyl-lH-benzimidazole
The title compound can be prepared from Intermediate 103 and 3-bromo-6- methoxypyridine via copper-catalysed coupling in accordance with Method P. QC LCMS mlz 414, RT 1.59 minutes. EXAMPLE 1023
5-([l-(2,5-Dichlorobenzyl)-2-methy H-benzim
The title compound can be prepared from Example 1022 in accordance with Method M. QC LCMS mlz 400, RT 1.35 minutes.
EXAMPLE 1024
5- (Γ 1 -(2,5-Dichlorobenzyl)-2-methyl-lH-benzimidazol-5-yl1oxyl - 1 -methylpyridin- 2(lH)-one
Prepared by treatment of Example 1023 with sodium hydride in DMF and quenching with methyl iodide. The resulting reaction mixture was stirred at ambient temperature until the reaction was complete. The reaction mixture was poured into water, and extracted with ethyl acetate. The combined organic layers were washed with brine, dried over sodium sulphate and filtered, then the volatiles were removed in vacuo. The resulting crude residue was purified by preparative HPLC. QC LCMS mlz 414, RT 1.41 minutes.
EXAMPLE 1025
{6-(6-Methoxypyridin-3 -yl)- 1 -[(1 S)- 1 -phenylethyl]benzimidazol-2-yl| [4-(methyl- sulfonyDphenyllmethanol
Example 717 (0.5 g, 1.01 mmol), N-bromosuccinimide (18 mg, 1.01 mmol) and 2,2'-azobis(2-methylpropionitrile) (10 mg, 0.06 mmol) were heated in reluxing carbon tetrachloride (2.5 mL) whilst open to air. After 4 h, the volatiles were removed in vacuo and the residue was purified by column chromatography, to afford the title compound (30 mg) as an off white solid. δΗ (300 MHz, DMSO-d6) 8.17 (d, 1H, J2.5 Hz), 7.97 (m, 1H), 7.89 (m, 1H), 7.76 (m, 2H), 7.73 (m, 1H), 7.69 (dd, 1H, J 8.5, 2.4 Hz), 7.35 (m, 4H), 7.20 (d, 1H, J2.0 Hz), 7.12 (s, 1H), 7.04 (dd, 1H, J 12.3, 1.2 Hz), 6.98 (m, 1H), 6.79 (d, 1H, J 8.6 Hz), 6.41 (d, 1H, J 16.3 Hz), 6.18 (m, 1H), 3.85 (s, 3H), 3.31 (s, 3H), 3.19 (d, 3H, J 14.7 Hz). LCMS (pH 3) (M+H)+ 514.7, RT 2.13 minutes. LCMS (pH 10) (M+H)+ 514.70, RT 1.50 minutes. EXAMPLE 1026
(l-([2-(Difluoromethoxy)phenyllmem^
[4-(methylsulfanyl)phenyllmethanol
Intermediate 116 (0.5 g, 1.2 mmol) was dissolved in tetrahydrafuran (10 mL) and cooled to 0°C, whereupon 4-thioanisolemagnesium bromide (2.9 mL, 1.46 mmol, 0.50 mol/L) was added. After 2 h, the reaction mixture was quenched by addition of saturated aqueous NH4C1 solution and extracted with DCM. The organic layers were dried with Na2S04, filtered and evaporated, to give the title compound, a sample of which was purified by column chromatography on silica gel. δΗ (300 MHz, DMSO-d6) 8.40 (m,
1H), 7.93 (dd, 1H, J 8.6, 2.6 Hz), 7.74 (d, 1H, J 8.4 Hz), 7.53 (m, 2H), 7.34 (m), 7.24 (m, 4H), 7.11 (m, 2H), 6.93 (m, 1H), 6.86 (dd, 1H, J 8.6, 0.4 Hz), 6.55 (d, 1H, J5.2 Hz), 6.30 (dd, 1H, J7.8, 1.1 Hz), 6.05 (d, 1H, J5.1 Hz), 5.60 (m, 2H), 3.86 (s, 3H), 2.41 (s, 3H). LCMS (pH 3) (M+H)+ 517, RT 2.69 minutes. LCMS (pH 10) (M+H)+ 517, RT 2.83 minutes.
EXAMPLE 1027
(l-(r2-(Difluoromethoxy)phenyl1methyl|-6-(6-methoxypyridin-3-yl)benzimidazol-2-yl)- r4-(methylsulfonyl)phenyl1methanol
Example 1026 (200 mg, 0.375 mmol) was dissolved in dichloromethane (10 mL) at 0°C and 3-chloroperoxybenzoic acid (136 mg, 0.79 mmol) was added. After 2 h at 0°C the reaction mixture was washed with aqueous sodium thiosulphate and sodium carbonate solutions, dried over sodium sulphate, and evaporated onto silica. Purification by column chromatography gave the title compound (100 mg, 47%). δΗ (300 MHz, CDC13) 8.15 (d, 1H, J2.4 Hz), 7.76 (d, 1H, J 8.4 Hz), 7.65 (m, 2H), 7.56 (m, 3H), 7.39 (dd, 1H, J 8.4, 1.5 Hz), 7.13 (m, 1H), 7.01 (m, 2H), 6.71 (m, 2H), 6.59 (t, 1H, J73.2 Hz), 6.29 (s, 1H), 6.04 (d, 1H, J7.4 Hz), 5.55 (m, 1H), 5.21 (m, 1H), 3.85 (s, 3H), 2.93 (s, 3H). LCMS (pH 3) (M+H)+ 566, RT 2.21 minutes. LCMS (pH 10) (M+H)+ 566, RT 2.25 minutes. EXAMPLE 1028 l-(4-{[6-(6-methoxypyridin-3-yl)-l-(l-ph^
yl)imidazolidin-2-one
The title compound can be synthesized from 6-methoxypyridin-3-ylboronic acid,
(S)- 1 -phenyl ethylamine and 2-[2-(2-oxoimidazolidin-l-yl)thiazol-4-yl]acetic acid by a sequence of steps corresponding to the preparation of Intermediate 34 followed by Method J. QC LCMS m/z 511 (M+H)+, RT 1.52 minutes.
EXAMPLE 1029
5-(2-{[2-(2-oxoimidazolidin-l-yl)thiazol-4-yllmethyl|-l-(l-phenylethyl)benzimidazol-6- vD- lH-pyridin-2-one
Example 1028 (20 mg, 0.04 mmol) was treated with pyridine hydrochloride (18 mg, 0.16 mmol) in accordance with Method M to give the title compound (10 mg, 51 %) . δΗ (300 MHz, DMSO-dg) 11.72 (m, 1H), 7.57 (m, 3H), 7.45 (m, 1H), 7.30 (m, 6H), 7.07 (s, 1H), 6.83 (s, 1H), 6.38 (d, 1H, J9.4 Hz), 6.14 (m, 1H), 4.37 (d, 2H, J0.4 Hz), 3.89 (m, 2H), 3.43 (m, 2H), 1.86 (d, 3H, J 7.0 Hz). LCMS (pH 3) (M+H)+ 497.7, RT 1.32 minutes. LCMS (pH 10) (M+H)+ 497.6, RT 1.54 minutes.
EXAMPLE 1030 l-( r2-(Difluoromethoxy)phenyl1methyl| -2- { r3-(2-oxopyrrolidin- 1 -yDphenyllsulfonyl- methyllbenzimidazole-6-carbonitrile
Example 210 (50 mg, 0.10 mmol) was dissolved in DCM (5 mL) and cooled using an ice bath. mCPBA (18 mg, 0.10 mmol) was added and the reaction mixture was stirred for 1 h. The reaction mixture was diluted with DCM (10 mL) and washed with aqueous sodium carbonate solution, before drying over sodium sulphate and evaporating in vacuo. The residue was dissolved in DCM (5 mL), a further equivalent of mCPBA (18 mg, 0.10 mmol) was added and the reaction mixture was stirred for 1 h. The reaction mixture was diluted with DCM (10 mL) and washed with aqueous sodium carbonate solution before drying over sodium sulphate and evaporating in vacuo. The residue was purified by column chromatography (Si02, 1-15% MeOH in DCM) to give the title compound (10 mg, 19%) as a white powder. LCMS (ES+) 537 (M+H)+, RT 2.10 minutes.
EXAMPLE 1031
Ethyl 4-methyl- 1 -Γ5-(2 -methyl- 1 - {r2-methyl-5-(trifluoromethyl)thiazol-4-yl1methyl| - benzimidazol-6-yl)pyrimidin-2-yllpiperidine-4-carboxylate
To Intermediate 91 (250 mg, 0.64 mmol) was added [l,l '-bis(diphenyl- phosphino)ferrocene]dichloropalladium(II) (47.1 mg, 0.063 mmol) in a microwave vial and the reaction mixture was degassed under three cycles of vacuum and nitrogen. To the dry reaction materials were added potassium carbonate (0.63 mL, 2M solution, 1.26 mmol) and Intermediate 89 (269 mg, 0.68 mmol) dissolved in tetrahydrofuran (4 mL). The reaction mixture was degassed under three cycles of vacuum and nitrogen and was heated under microwave irradiation at 100°C for 3 h. The reaction mixture was cooled to room temperature and left to stand overnight. The reaction mixture was partitioned between water (5 mL) and dichloromethane (5 mL) and was filtered through a phase separation cartridge, then the organic layer was concentrated in vacuo. The crude material was purified by flash column chromatography on silica. Gradient elution with 50% ethyl acetate/isohexane to 100% ethyl acetate afforded the title compound (154 mg, 43%). LCMS (pH 3): MH+ mlz 560, RT 2.51 minutes (100%). LCMS (pH 10): MH+ mlz 560, RT 2.84 minutes (98%).
EXAMPLE 1032 Ethyl l-r5-(l-(r2-(difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-yll-4-methylpiperidine-4-carboxylate
The title compound was synthesized from Intermediate 47 and Intermediate 89 by the method described for Example 1031. LCMS (pH 3): MH+ mlz 537, RT 2.39 minutes (100%). LCMS (pH 10): MH+ mlz no mass ion observed, RT 2.77 minutes (98%). EXAMPLE 1033
Ethyl l-[5-(l-([2-chloro-6-(difluorometh^
yl)pyrimidin-2-yll-4-methylpiperidine-4-carboxylate
The title compound was synthesized from Intermediate 89 and Intermediate 90 by the method described for Example 1031. LCMS (pH 3): MH+ mlz 571, RT 2.34 minutes (93%). LCMS (pH 10): MH+ mlz 571, RT 2.57 minutes (93%).
EXAMPLE 1034
2-Methyl-4-[(2-methyl-6-(2-[4-(methylsulfonyl)piperazin-l-yllpyrimidin-5-yl|- benzimidazol- 1 -yDmethyl] -5 -(trifluoromethyl)thiazole
To Intermediate 117 (105 mg, 0.37 mmol) were added [l,l '-bis(diphenyl- phosphino)ferrocene]dichloropalladium(II) (11.6 mg, 0.016 mmol) and Intermediate 91 (118.0 mg, 0.30 mmol). The solids were sealed in a microwave vial and degassed under three cycles of vacuum and nitrogen. To this was added 1, 2 -dimethoxy ethane (3 mL), and the mixture was degassed under three cycles of vacuum and nitrogen. To this was added 2M aqueous potassium carbonate solution (0.3 mL, 0.6 mmol), and the reaction mixture was degassed under three cycles of vacuum and nitrogen before heating for 3 h at 100°C. The reaction mixture was partitioned between water (5 mL) and dichloromethane (5 mL), the organic layer was filtered through a phase separation cartridge and the solvent was removed in vacuo. The crude reaction material was purified by preparative HPLC to afford the title compound (10 mg). δΗ (400 MHz, DMSO-d6) 8.72 (s, 2H), 8.46 (s, 4.06H, formate), 7.67 (d, J 1.2 Hz, IH), 7.60 (d, J 8.3 Hz, IH), 7.44 (dd, J 8.3, 1.6 Hz, IH), 5.67 (s, 2H), 5.59 (s, J0.4 Hz, 0.17H), 3.89-3.95 (m, 4H), 3.19-3.24 (m, 4H), 2.91 (m, 3H), 2.91 (s, 3H), 2.59 (s, 3H), 2.56 (s, 3H). LCMS (pH 3): MH+ mlz 553, RT 2.14 minutes (100%). LCMS (pH 10): MH+ mlz 553, RT 1.90 minutes (100%).
EXAMPLE 1035 l-( [2-Chloro-6-(difluoromethoxy)phenyllmethyl| -2-methyl-6- (2-[4-(methylsulfonyD- piperazin-l-vHpyrimidin-5-yl|benzimidazole
The title compound was prepared from Intermediate 117 and Intermediate 90 by the method described for Example 1034. δΗ (400 MHz, DMSO-d6) 8.58 (s, 2H), 8.39 (s, formate, 0.55H), 7.57 (d, J 8.3 Hz, 1H), 7.47-7.53 (m, 2H), 7.36-7.40 (m, 2H), 7.30 (t, J 72.3 Hz, 1H), 7.27 (dd, J 6.5, 2.4 Hz, 1H), 5.60 (s, 2H), 3.88-3.94 (m, 4H), 3.19-3.24 (m, 4H), 2.91 (s, 3H), 2.59 (s, 3H). LCMS (pH 3): MH+ mlz 564, RT 1.90 minutes (100%). LCMS (pH 10): MH+ mlz 564, RT 2.11 minutes (100%).
EXAMPLE 1036 l- (r2-Chloro-5-(difluoromethoxy)phenyl1methyl|-2-methyl-6-(2-r4-(methylsulfonyl)- piperazin-l-vHpyrimidin-5-yl|benzimidazole
The title compound was prepared from Intermediate 117 and Intermediate 49 by the method described for Example 1034. δΗ (400 MHz, DMSO-d6) 8.75 (s, 2H), 8.53 (s, formate, 0.09H), 7.78 (s, 1H), 7.62-7.68 (m, 2H), 7.49 (dd, J 8.3, 1.2Hz, 1H), 7.19 (dd, J 8.7, 2.7 Hz, 1H), 7.10 (t, J 73.5 Hz, 1H), 6.29 (d, J2.6 Hz, 1H), 5.61 (s, 2H), 3.88-3.94 (m, 4H), 3.17-3.24 (m, 4H), 2.90 (s, 3H), 2.48 (s, 3H). LCMS (pH 3): MH+ mlz 564, RT 2.01 minutes (100%). LCMS (pH 10): RT 2.24 minutes (100%).
EXAMPLE 1037 4-(l-{6-r5-Chloro-6-(piperazin-l-yl)pyridin-3-yl1-2-methylbenzimidazol-l-yl|ethyl)-2- methylthiazole
4-Bromo-2-fluoronitrobenzene was reacted with [5-chloro-6-(piperazin-l-yl)- pyridin-3-yl]boronic acid in accordance with Method L. The resulting material was dissolved in DMF and treated with l-(2-methylthiazol-4-yl)ethanamine (1.2 equivalents) and potassium carbonate (1.5 equivalents). The reaction mixture was heated at 60°C until LCMS confirmed that the reaction was complete. The reaction mixture was poured into water and extracted with dichloromethane. The organic layers were dried with sodium sulphate and filtered, and the volatiles were removed in vacuo. The resulting material was dissolved in ethanol and treated with zinc (5 equivalents) and ammonium chloride (10 equivalents). The mixture was stirred at ambient temperature or 60°C until LCMS confirmed that the reaction was complete. The reaction mixture was diluted with dichloromethane and filtered through celite. The organic phase was washed with brine, separated, dried over sodium sulphate and filtered. The volatiles were removed in vacuo. The residue was dissolved in glacial acetic acid and heated to 100°C until LCMS confirmed that the reaction was complete. The volatiles were removed in vacuo and the crude residue was purified by mass-directed preparative HPLC, to give the title compound (19 mg, 61%) as a white solid. δΗ (400 MHz, DMSO-d6) 8.47 (d, J2.1 Hz, IH), 8.01 (d, J2.2 Hz, IH), 7.70 (d, J 0.8 Hz, IH), 7.65 (d, J 1.2 Hz, IH), 7.57 (d, J 8.4 Hz, IH), 7.43 (dd, J 8.3, 1.6 Hz, IH), 5.98 (q, J6.8 Hz, IH), 3.18-3.25 (m, 4H), 2.83-2.90 (m, 4H), 2.58 (s, 3H), 2.58 (s, 3H), 1.96 (d, J7.2 Hz, 3H). LCMS (pH 10): MH+ m/z 454, RT 1.80 minutes (100%). LCMS (pH 3): MH+ mlz 454, RT 1.07 minutes (100%). EXAMPLE 1038
6-Chloro-5-([2-(methoxymethyl)-6-(6-methoxypyridin-3-yl)benzimidazol-l-yllmethyl|- imidazor2, 1 -^lthiazole
Can be synthesised from Intermediate 32 and (6-chloroimidazo[2,l-¾]thiazol-5- yl)methanamine according to the method described for Intermediate 33, followed by reaction with 2-methoxyacetic acid in accordance with Method J, to give the title compound. LCMS (pH 3): MH+ mlz 440.6, RT 1.94 minutes (100%). LCMS (pH 10): MH+ mlz 440.6, RT 2.00 minutes (100%). EXAMPLE 1039 l-(l-Benzylpyrrolidin-3-yl)-6-(6-methoxypyridin-3-yl)-2-methylbenzimidazole
The title compound was synthesised by the procedure described for Example 1037 utilising 6-methoxypyridin-3-ylboronic acid and l-benzylpyrrolidin-3-amine. LCMS (pH 3): MH+ mlz 400, RT 1.25 minutes (100%). LCMS (pH 10): MH+ mlz 400, RT 2.58 minutes (100%).
EXAMPLE 1040 (6-Bromo- 1 -[(2,5-dimethylphenyl)methyllbenzimidazol-2-yl| (pyridin-4-yl)methanol Lithium diisopropylamine (10 mL, 7.77 mmol) was added dropwise to a stirred solution of Intermediate 118 (2.00 g, 6.37 mmol) in tetrahydrofuran (50 mL) at -78°C. The mixture was stirred at -78°C for 2 h before dropwise addition of 4-pyridine carboxaldehyde (1.3 mL, 1.46 g, 13.61 mmol). The mixture was stirred for 10 minutes before quenching with brine (20 mL) and warming to ambient temperature. The mixture was partitioned between ethyl acetate (100 mL) and water (100 mL). The organic layer was separated and the aqueous layer was re-extracted with ethyl acetate (4 x 100 mL). The organic layers were combined, dried (Na2S04) and filtered, and the solvent was removed in vacuo. The resulting dark brown oil was triturated with isohexane/ethyl acetate to yield a solid, which was filtered under reduced pressure and washed with iso- hexane, to afford the title compound (1.61 g, 60%) as a brown solid. LCMS (pH 3): MH+ mlz 424, RT 1.82 minutes (93%). LCMS (pH 10): MH+ mlz 424, RT 2.32 minutes (92%).
EXAMPLES 1041 & 1042
(R)- and (S)- { 1 (2,5-Dimethylphenyl)methyl"|-6-(l -methylpyrazol-4-yl)benzimidazol-2- yl| (pyridin-4-yl)methanol
To Example 1040 (1.71 g, 3.73 mmol) in 1 ,2-dimethoxyethane (100 mL) was added water (10 mL) and the reaction mixture was degassed under three cycles of vacuum and nitrogen. l-Methylpyrazol-4-ylboronate ester (1.26 g, 6.06 mmol) was added and the mixture was degassed. Tetrakis(triphenylphosphine)palladium(0) (480 mg, 0.42 mmol) and 2M aqueous sodium carbonate solution (4.1 mL, 8.2 mmol) were added and the mixture was degassed. The mixture was heated to 80° for 2 h before cooling to room temperature. The mixture was diluted with ethyl acetate (200 mL) and washed with water (100 mL). The organic phase was separated and the aqueous phase was rewashed with ethyl acetate (2 x 100 mL). The organic layers were combined, dried (Na2S04) and filtered under reduced pressure to afford a brown oil, which was purified by flash column chromatography on silica (20% ethyl acetate/isohexane to 100% ethyl acetate, 100% dichloromethane to 20% ethanol/dichloromethane), to afford a racemic mixture. A portion was purified by chiral preparative HPLC to afford the separate enantiomers of the title compound as off-white solids.
Enantiomer A: LCMS (pH 3): MH+ mlz 424, RT 1.40 minutes (94%). LCMS (pH 10): MHVz 424, RT 1.84 minutes (100%).
Enantiomer B: LCMS (pH 3): MH+ mlz 424, RT 1.39 minutes (100%). LCMS (pH 10): MH+ mlz 424, RT 1.84 minutes (94%). EXAMPLE 1043 l-[(2,5-Dimethylphenyl)methyll-2-[(hydroxy)(pyridin-4-yl)methyllbenzim
carbonitrile
The title compound can be prepared from Intermediate 95 by the procedure described for Example 1040. δΗ (300 MHz, DMSO-d6) 8.41 (d, 2H, J 6.1 Hz), 7.85-7.91 (m, 1H), 7.61 (d, 1H, J 9.9 Hz) 7.30 (d, 2H, J 5.8 Hz), 6.98 (m, 2H), 6.1 1 (s, 1H), 5.72 (s, 1H), 5.62 (q, 2H), 2.31 (s, 3H), 1.91 (s, 3H). QC LCMS mlz 370, RT 1.39 minutes. EXAMPLE 1044
1 -\(IR)- 1 -Phenylethyll-2-(pyridin-4-ylmethoxymethyl)benzimidazole
To Intermediate 119 (100 mg, 0.40 mmol) and 4-(bromomethyl)pyridine hydrogen bromide (96 mg, 0.38 mmol) dissolved in DMF (1.5 mL) was added sodium hydride (60% dispersion in mineral oil, 46 mg, 1.14 mmol). The reaction mixture was stirred for 10 minutes and the mixture was partitioned between aqueous sodium bicarbonate solution (20 mL) and dichloromethane (20 mL). The organic layer was separated and the aqueous layer was re-extracted with dichloromethane (20 mL). The organic layers were combined, dried (Na2S04) and filtered under reduced pressure, then the solvent was removed in vacuo. The resulting dark brown oil was purified by flash column chromatography on NH-silica (100% isohexane to 100% ethyl acetate) to afford the title compound (52 mg, 51%) as a straw coloured gum. LCMS (pH 3): MH+ mlz 344, RT 1.17 minutes (100%). LCMS (pH 10): MH+ mlz 344, RT 2.08 minutes (100%). EXAMPLE 1045
1 - |Y 1 S)- 1 -Phenylethyl] -2-(pyridin-4-ylmethoxymethyl)benzimidazole
Prepared by an analogous procedure to that described for Example 1044 commencing from (5)-l-phenylethylamine. The crude material was purified by preparative HPLC to afford the title compound (159 mg, 28%) as a colourless gum.
LCMS (pH 3): MH+ mlz 344, RT 1.22 minutes (100%). LCMS (pHIO): MH+ mlz 344, RT 2.08 minutes (100%). EXAMPLE 1046
6-Bromo- 1 -[ 1 -(2-fluorophenyl)ethyl] -2-methylbenzimidazole
The title compound was prepared in accordance with the procedure described for Example 1037, omitting the Suzuki coupling step and commencing from l-(2-fluoro- phenyl)ethylamine. The acetic acid cyclisation step required subsequent heating to 100°C in toluene with pTSA (1.0 equivalent). Upon removal of solvent, the tosylate salt was obtained as an off-white solid. δΗ (d6-DMSO) 7.94 (m, 1H), 7.78 (s, 1H), 7.73 (d, 1H, J 8.6 Hz), 7.62 (d, 1H, J 8.6 Hz), 7.53-7.47 (m, 3H), 7.43-7.37 (m, 1H), 7.23-7.18 (m, 1H), 7.11 (d, 2H, J7.8 Hz), 6.39 (q, 1H, J 7.1 Hz), 2.83 (s, 3H), 2.30 (s, 3H), 2.02 (d, 3H, J 7.1 Hz). LCMS (pHIO), MH+ (333/335), RT 2.31 minutes.
EXAMPLE 1047 4-({6-[6-(Dimethylamino)pyridin-3-yll-l-[(5-methylisoxazol-3-yl)methyllbenzimidazol-
2-yl|methoxy)benzamide
Prepared in two steps from Intermediate 120 by Method B using 3-(chloromethyl)-
5-methylisoxazole, followed by Suzuki coupling with 2-(dimethylamino)pyridin-5-yl- boronic acid in accordance with Method L, and subsequent purification by mass-directed HPLC, to give the title compound as a pale pink solid. LCMS (pH 10), MH+ mlz 483, RT
2.14 minutes.
EXAMPLE 1048 (Cyclobutyl)(4- { 1 2-(difluoromethoxy)benzyl1-2-methyl- lH-benzimidazol-6-yl| - piperidin- 1 -yPmethanone
The title compound was prepared from Intermediate 122 and cyclobutane- carboxylic acid in accordance with Method G. QC LCMS mlz 545, RT 1.52 minutes. EXAMPLE 1049
1 -(4- { 1 -[2-(Difluoromethoxy)benzyll-2-methyl-lH-benzimidazol-6-yl|piperidin- 1 -yl)-2- methylpropan- 1 -one
The title compound was prepared from Intermediate 122 and 2-methylpropanoic acid in accordance with Method G. QC LCMS mlz 442, RT 1.45 minutes.
EXAMPLE 1050 1 - r2-(Difluoromethoxy)benzvH -6-Γ 1 -(ethylsulfonvDpiperidin-4- yll -2 -methyl- 1H- benzimidazole
The title compound was prepared using a method analogous to that used to prepare Example 533, using Intermediate 122 and ethanesulphonyl chloride. QC LCMS mlz 464, RT 1.46 minutes.
EXAMPLE 1051
(2S3SAS,5R6S)-6- ( Γ5-Π - ( r2-(Difluoromethoxy phenvHmethyl| -2-methylbenzimidazol- 6-yl)pyridin-2-yl1oxyl-3,4,5-trihvdroxytetrahvdropyran-2-carboxylic acid
To a stirred solution of Intermediate 123 (43 mg, 0.062 mmol) in acetone (2 mL) were added IN aqueous sodium hydroxide solution (0.5 mL) and water (0.75 mL). The resultant mixture was stirred at room temperature for 2 h, after which time the reaction mixture was concentrated in vacuo. The crude material was purified by preparative HPLC and freeze dried from acetonitrile/water, to give the title compound (23 mg, 68%) as a white solid. δΗ (CD3OD) 8.24 (d, IH, J2.3 Hz), 7.86 (dd, IH, J 8.6, 2.5 Hz), 7.57 (d, 1H, J 8.4 Hz), 7.47 (d, 1H, J 1.2 Hz), 7.40 (dd, 1H, J 8.4, 1.6 Hz), 7.24-7.31 (m, IH), 7.12-7.17 (m, IH), 7.07 (td, 1H, J 7.5, 1.0 Hz), 6.88 (d, IH, J 8.7 Hz), 6.86 (t, 1H, J 73.6 Hz), 6.84 (dd, 1H, J7.9, 1.4 Hz), 5.66-5.71 (m, IH), 5.49 (s, 2H), 3.79-3.85 (m, IH), 3.42-3.50 (m, 3H), 2.52 (s, 3H). LCMS (ES+) 558 (M+H)+, RT 0.82 minutes. EXAMPLE 1052
4-(5-(l-[2-(Difluoromethoxy)benzyl]-2-meth^
pyrimidin-2-yl)piperazin-2-one
To a stirred solution of Intermediate 69 (200 mg, 0.50 mmol) and Intermediate
124 (179 mg, 1.25 mmol) in ethanol was added sodium ethoxide (68 mg, 1.25 mmol) and the reaction mixture was heated at 80°C for 48 h. After this time, the reaction mixture was cooled to room temperature, concentrated in vacuo and partitioned between DCM (25 mL) and water (25 mL). The layers were separated and the aqueous phase was back- extracted with 10% MeOH/DCM (3 x 25 mL). The combined organic layers were passed down a phase separator and concentrated in vacuo. The crude material was purified by column chromatography (Si02, 2.5-5% MeOH in DCM), and freeze-dried from
acetonitrile/water, to give the title compound (67 mg, 30%) as a white solid. δΗ (DMSO- d6) 8.13 (s, 1H), 8.03-8.06 (m, 1H), 7.54 (d, 1H, J 8.3 Hz), 7.28-7.35 (m, 2H), 7.26 (t, 1H, J 73.9 Hz), 7.18 (dd, 1H, J 8.0, 0.6 Hz), 7.04-7.13 (m, 2H), 6.79 (dd, 1H, J 7.7, 1.3 Hz), 5.43 (s, 2H), 4.13 (s, 2H), 3.86 (t, 2H, J5.2 Hz), 3.18-3.24 (m, 2H), 2.46 (s, 3H), 2.18 (s, 3H). LCMS (ES+) 479 (M+H)+, RT 1.82 minutes.
EXAMPLE 1053 l-[2-(Difluoromethoxy)benzyll-2-(dimethylamino)-lH-benzimidazole-6-carbonitrile
Intermediate 40 (200 mg, 0.69 mmol) was dissolved in DCM (7 mL), then Hunig's base (0.13 mL, 0.76 mmol) and (dichloromethylene)dimethylammonium chloride (112 mg, 0.69 mmol) were added sequentially. The reaction mixture was then stirred under N2 for 18 h. The reaction mixture was partitioned between DCM (10 mL) and 10% aqueous NaHC03 solution (10 mL). The organic layer was separated and dried with Na2S04, then the solvent was removed under reduced pressure. The resulting oil was purified using silica-gel chromatography to afford the title compound (61 mg, 26%>). LCMS (pH 10) 344 (M+H)+, RT 2.34 minutes. EXAMPLE 1054 l-(2,5-Dichlorobenzyl)-2-[(4-oxocyclohexyl)methyll-lH-benzimidazole-6-carbonitrile Intermediate 42 (I g, 3.4 mmol) was combined with 2-(4-oxocyclohexyl)acetic acid (1.06 g, 6.8 mmol) in accordance with Method J to yield the title compound (142 mg, 10%). LCMS (pH 10) 412 (M+H)+, RT 2.23 minutes.
EXAMPLE 1055
1 - (3-r(6-Bromo- 1 - { 1 2-(difluoromethoxy)phenyl1ethyl| -lH-benzimidazol-2-yl)- methoxylphenyl|pyrrolidin-2-one (Isomer B)
2-[3-(2-Oxopyrrolidin-l-yl)phenoxy]acetic acid (0.36 g, 1.54 mmol) was reacted with Intermediate 131 in accordance with Method J to afford the title compound (0.19 g, 24%) as a pale solid. LCMS (pH 10) 557 (M+H)+, RT 2.66 minutes.
EXAMPLE 1056
1 - (3-[(l - ( 1 -[2-(Difluoromethoxy)phenyllethyl| -6-(6-oxopyridin-3-yl)benzimidazol-2- yl)methoxy1phenyl|pyrrolidin-2-one (Isomer B)
Example 1055 was coupled with 2-methoxypyridin-5-ylboronic acid (0.14 g, 0.91 mmol) in accordance with Method L. The resulting material was then demethylated in accordance with Method M to afford the title compound (37 mg, 16%>). LCMS (pH 10) 572 (M+H)+, RT 1.93 minutes.
EXAMPLE 1057
1 - (3-r(6-Bromo- 1 - {(1 2-(difluoromethoxy)phenyl1ethyl| -lH-benzimidazol-2-yl)- methoxylphenyl|pyrrolidin-2-one (Isomer A)
2-[3-(2-Oxopyrrolidin-l-yl)phenoxy]acetic acid (0.36 g, 1.54 mmol) was reacted with Intermediate 132 according to Method J to afford the title compound (0.45 g, 58%) as a pale solid. LCMS (pH 10) 557 (M+H)+, RT 2.67 minutes. EXAMPLE 1058
6-Bromo- 1 - {(\R or IS)- 1 -[2-(difluoromethoxy)phenyllethyl| -2-methylbenzimidazole (Isomer B)
Prepared from Intermediate 130 and 4-bromo-2-fluoronitrobenzene in accordance with Method K to afford the title compound (101 mg) as an off-white solid. δΗ (400 MHz, DMSO-dg) 7.88 (1H, dd, J7.7, 1.4 Hz), 7.50-7.45 (1H, m), 7.45-7.37 (2H, m), 7.28 (1H, d, J 1.8 Hz), 7.19 (1H, dd, J 8.5, 1.8 Hz), 7.15 (1H, br d, J 8.0 Hz), 7.12 (1H, t, J 73.8 Hz), 5.98 (1H, q, J7.2 Hz), 2.58 (3H, s), 1.88 (3H, d, J 7.2 Hz). LCMS (pH 3): MH+ mlz 212, RT 1.79 minutes (100%). LCMS (pH 10): MH+ mlz 214, RT 2.33 minutes (100%).
EXAMPLE 1059
4-r5-(5-Chloro-l-{r2-(difluoromethoxy)phenyl1methyl|-2-methylbenzimidazol-6-yl)- pyrimidin-2-yl"|piperazin-2-one
The title compound can be prepared from Intermediate 134 and piperazin-2-one in accordance with Method s. LCMS (pH=10): m/z 499.2 35C1 (M+H)+, 502.2 37C1 (M+H)+, RT 1.30 minutes. EXAMPLE 1060
2-[5-(l-([2-(Difluoromethoxy)phenyllmethyl|-5-fluoro-2-methylbenzimidazol-6-yl)- pyrimidin-2-vHpropan-2-ol
A mixture of Intermediate 50 (0.5 g, 1.543 mmol), 2-[5-(4,4,5,5-tetramethyl- l,3,2-dioxaborolan-2-yl)pyrimidin-2-yl]propan-2-ol (0.57 g, 2.16 mmol), Pd(dppf)Cl2 (32 mg, 0.039 mmol) and 2M aqueous sodium carbonate solution (3 mL) in 1,4-dioxane (12 mL) was degassed and stirred at 110°C. The reaction mixture was partitioned between EtO Ac/brine, and the organic layer was dried (MgS04). The solvent was evaporated and the crude material was purified by column chromatography (EtOAc:hexanes, 3:2 to 2: 1). The resulting material was crystallised from diethyl ether/hexanes, filtered, washed with diethyl ether/hexanes and dried, to give the title compound (0.32 g, 50%>) as a white solid. δΗ (400 MHz, DMSO-d6) 8.97 (d, J 1.6 Hz, 2H), 7.81 (d, J 6.8 Hz, 1H), 7.59 (d, J 11.4 Hz, 1H), 7.39 (m, 1H), 7.33 (t, J 72, 76 Hz, 1H), 7.26 (m, 1H), 7.17 (m, 1H), 6.83 (m, 1H), 5.56 (s, 2H), 2.50 (s, 3H), 1.54 (s, 6H). LCMS (pH 10) MH+ 443, RT 2.09 minutes.
EXAMPLE 1061
4-r5-(l-(r2-(Difluoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol-6-yl)- pyridin-2-yl] - 1 -methylpiperidin-4-ol
TBAF in THF (1M, 0.82 mL) was added to a solution of Intermediate 138 (60%, 128 mg, 0.14 mmol) in THF (1 mL) and stirred at 20°C for 2.5 h. The reaction mixture was concentrated under vacuum, diluted with EtOAc (5 mL) and washed with water (3 x 2 mL) and brine (2 mL), then dried over magnesium sulfate, filtered and concentrated under vacuum. The resulting crude product was purified by preparative HPLC (Method D) to afford the title compound (16 mg, 25%) as a pale brown solid. δΗ (500 MHz, CDC13) 8.62 (s, 1H), 7.88 (dt, J 8.2, 1.9 Hz, 1H), 7.52 (d, J 10.9 Hz, 1H), 7.43 (d, J 8.2 Hz, 1H), 7.35-7.30 (m, 1H), 7.17 (dd, J 15.2, 7.2 Hz, 2H), 7.10 (t, J 7.6 Hz, 1H), 6.81- 6.48 (m, 2H), 5.40 (s, 2H), 5.23 (s, 1H), 2.82 (d, J 11.0 Hz, 2H), 2.61-2.51 (m, 5H), 2.39 (s, 3H), 2.14 (td, J 13.0, 4.4 Hz, 2H), 1.68 (d, J 11.6 Hz, 2H). LCMS Method D: MH+ mlz 497.1, RT 1.41 minutes (100%). EXAMPLE 1062
4-[5-(l-([2-(Difluoromethoxy)phenyllmethyl|-5-fluoro-2-methylbenzimidazol-6-yl)- pyrimidin-2-vH - 1 -methylpiperidin-4-ol
Intermediate 141 (232 mg, 0.59 mmol) and Intermediate 50 (150 mg, 0.39 mmol) were stirred in 1,4-dioxane (3 mL) and 2M aqueous sodium carbonate solution (0.61 mL) was added. The mixture was degassed with nitrogen for 5 minutes, then Pd(dppf)Cl2 complex with DCM (0.02 g, 0.02 mmol) was added. The tube was sealed and the reaction mixture was heated at 85°C for 1.5 h. The reaction mixture was cooled and TBAF in THF (1M, 2.34 mL) was added, and the reaction mixture was stirred for 19 h. The mixture was diluted with water (1 mL) and extracted into EtOAc (3 x 10 mL), then washed with brine (5 mL), dried over magnesium sulphate, filtered and concentrated under vacuum. The crude product was purified on a Biotage isolera 4 using SNAP HP lOg column, eluting with 0-10% 7N methanolic ammonia in DCM. The resulting material was further purified by preparative HPLC (method D) to afford the title compound (28.7 mg, 14.8%) as a white solid. δΗ (250 MHz, CDC13) 8.85 (d, J 1.6 Hz, 2H), 7.56 (d, J 10.8 Hz, IH), 7.41-7.29 (m, IH), 7.23-7.06 (m, 3H), 6.65 (t, J73.2 Hz, IH), 6.65 (d, J 5.5 Hz, IH), 5.41 (s, 2H), 4.51 (s, IH), 2.83 (d, J 10.3 Hz, 2H), 2.61 (s, 3H), 2.60-2.42 (m, 4H), 2.39 (s, 3H), 1.67 (d, J 11.6 Hz, 2H). LCMS Method D: MH+ mlz 498.1 , RT 1.38 minutes (100%).
EXAMPLE 1063 3-r5-(l-(r2-(Difluoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol-6-yl)- pyrimidin-2-yl"|oxetan-3-ol
Intermediate 142 (146 mg, 0.63 mmol) and Intermediate 143 (385 mg, 0.76 mmol) were dissolved in anhydrous 1 ,4-dioxane (8 mL) and 2M aqueous potassium carbonate solution (0.96 mL) was added. The mixture was degassed under nitrogen for 5 minutes. Pd(dppf)Cl2 complex with DCM (23 mg, 0.032 mmol) was added. The mixture was heated at 105°C in a sealed tube for 3 h. The reaction mixture was cooled, ethyl acetate (10 mL) was added and the mixture was filtered through a plug of Celite, washing with EtOAc (30 mL). The organic solution was washed with brine (15 mL), dried over sodium sulfate, and filtered, then the solvent was removed under vacuum. The resulting crude dark brown oil was purified using preparative HPLC (method C) to afford the title compound (39 mg, 14%) as an off white solid. δΗ (500 MHz, DMSO-d6) 9.05 (d, J 1.5 Hz, 2H), 7.82 (d, J6.8 Hz, IH), 7.59 (d, J 11.3 Hz, IH), 7.38 (td, J 8.3, 1.4 Hz, IH), 7.33 (t, J73.8 Hz, IH), 7.25 (d, J 8.1 Hz, IH), 7.18-7.13 (m, IH), 6.81 (d, J6.7 Hz, IH), 6.39 (s, IH), 5.56 (s, 2H), 5.02 (d, J6.6 Hz, 2H), 4.71 (d, J 6.5 Hz, 2H), 3.32 (s, 3H). LCMS Method D: MH+ mlz 457.1, RT 1.99 minutes (100%).
EXAMPLE 1064 l-r5-(l-(r2-(Difluoromethoxy)phenyl1methyl|-5-fluoro-2-methylbenzimidazol-6-yl)- pyrimidin-2-yl"|cyclobutanol
Intermediate 142 (150 mg, 0.655 mmol) and Intermediate 144 (598 mg, 1.18 mmol) were dissolved in anhydrous 1,4-dioxane (8 mL) and 2M aqueous potassium carbonate solution (1.0 mL) was added. The mixture was degassed under nitrogen for 5 minutes. Pd(dppf)Cl2 complex with DCM (24 mg, 0.033 mmol) was added. The mixture was heated at 105°C in a sealed tube for 3 h. The reaction mixture was cooled, ethyl acetate (10 mL) was added and the mixture was filtered through a plug of Celite, washing with EtOAc (30 mL). The organic solution was washed with brine (15 mL), dried over sodium sulfate, and filtered, then the solvent removed under vacuum. The resulting crude dark brown oil was purified using a Biotage Isolera 4, eluting with 5% to 10% MeOH in DCM. The resulting material was purified using preparative HPLC (method D) to afford the title compound (27.8 mg, 9%) as a crystalline white solid. 5H (500 MHz, CDC13) 8.89 (s, 2H), 7.59 (d, J 10.8 Hz, 1H), 7.41-7.32 (m, 1H), 7.22 (d, J 8.2 Hz, 1H), 7.19 (d, J6.3 Hz, 1H), 7.14 (t, J 7.6 Hz, 1H), 6.70 (d, J 7.6 Hz, 1H), 6.67 (t, J 73.2 Hz, 1H), 5.44 (s, 2H), 5.03 (s, 1H), 2.76-2.66 (m, 2H), 2.65 (s, 3H), 2.55 (q, J9.9 Hz, 2H), 2.21-2.11 (m, 1H), 2.07 (ddt, J 15.7, 10.4, 4.8 Hz, 1H). LCMS Method D: MH+ mlz 456.1, RT 2.54 minutes (100%). EXAMPLE 1065
2-[5-(l-([2-(Difluoromethoxy)phenyllmethyl|-5-fluoro-2-methylbenzimidazol-6-yl)- pyridin-2-yl"|propan-2-ol
To a stirring solution of Intermediate 7 5 (161 mg, 0.31 mmol) in acetonitrile (5 mL) was added TBAF in THF (1M, 1 mL) and the mixture was stirred at room
temperature under nitrogen for 1 h. The reaction mixture was diluted with ethyl acetate (20 mL) and washed with water (20 mL). The organic layer was separated, dried over sodium sulfate and concentrated under vacuum. The resulting colourless oil (138 mg) was purified by preparative HPLC (method C) to afford the title compound (45 mg, 32%) as an off-white coloured solid. δΗ (500 MHz, CDC13) 8.61 (s, 1H), 7.88 (dt, J 8.2, 2.0 Hz, 1H), 7.54 (d, J 10.8 Hz, 1H), 7.43 (d, J 8.2 Hz, 1H), 7.37-7.31 (m, 1H), 7.21-7.15 (m, 2H), 7.11 (t, J 7.6 Hz, 1H), 6.68-6.65 (m, 1H), 6.65 (t, J 73.2 Hz, 1H), 5.41 (s, 2H), 2.62 (s, 3H), 1.58 (s, 6H). LCMS Method D: MH+ mlz 442, RT 1.98 minutes (98%). EXAMPLE 1066 tert-Butyl 3-[5-(l-([2-(difluoromethoxy)phenyllmethyl|-5-fluoro-2-methylbenzimi 6-yl)pyrimidin-2-yll -3 -hydroxyazetidine- 1 -carboxylate
Intermediate 151 (570 mg, 1.27 mmol) and Intermediate 50 (94%, 420 mg, 1.03 mmol) were dissolved in 1 ,4-dioxane (20 mL) and 2M aqueous potassium carbonate solution (1.7 mL) was added. The mixture was degassed with nitrogen for 5 minutes. Pd(dppf)Cl2 complex with DCM (45 mg, 0.055 mmol) was added. The mixture was stirred at 100°C under nitrogen for 17 h. The reaction mixture was allowed to cool, filtered through sodium sulfate and concentrated under vacuum. The resulting dark oil (810 mg) was loaded onto a 25 g KP-silica cartridge and eluted on a Biotage Isolera 4, from a 0-100% ethyl acetate in heptanes gradient, to afford the title compound (269 mg, 44.4%) as a pale yellow solid. δΗ (500 MHz, CDC13) 8.91 (s, 2H), 7.59 (d, J 10.7 Hz, IH), 7.36 (t, J 7.8 Hz, IH), 7.23-7.16 (m, 2H), 7.13 (t, J 7.5 Hz, IH), 6.71 (d, J7.5 Hz, IH), 6.65 (t, J 73.2 Hz, IH), 5.43 (s, 2H), 5.25 (s, IH), 4.41 (d, J 8.4 Hz, 2H), 4.25 (d, J 8.9 Hz, 2H), 2.65 (s, 3H), 1.48 (s, 9H). LCMS Method D: MH+ mlz 556, RT 2.92 minutes (94%).
EXAMPLE 1067
3-[5-(l-([2-(Difluoromethoxy)phenyllmethyl|-5-fluoro-2-methylbenzimidazol-6-yl)- pyrimidin-2-yl"|azetidin-3-ol formic acid salt
A solution of Example 1066 (240 mg, 0.43 mmol) in 1,4-dioxane (2 mL) was treated with 4M hydrogen chloride in 1,4-dioxane (2 mL). The resulting sticky gum was placed in a sonic bath for 15 minutes, then stirred at room temperature for 1 h. The resulting fine suspension was concentrated under vacuum and the residue was triturated in 1 : 1 ethyl acetate in heptanes. The resulting solid was filtered off and dried in a vacuum oven. The resulting crude off-white solid was purified by preparative HPLC (method A) to afford the title compound (30 mg, 13%>) as an off-white solid. δΗ (500 MHz, CD3OD) 9.06 (d, J 1.5 Hz, 2H), 8.40 (s, IH), 7.61 (d, J6.5 Hz, IH), 7.51 (d, J 11.0 Hz, IH), 7.38 (td, J 8.3, 1.5 Hz, IH), 7.24 (d, J7.8 Hz, IH), 7.17 (td, J 7.6, 0.9 Hz, IH), 6.99-6.94 (m, IH), 6.97 (t, J 73.6 Hz, IH), 5.60 (s, 2H), 4.63 (d, J 11.8 Hz, 2H), 4.32 (d, J 11.7 Hz, 2H), 2.62 (s, 3H). LCMS Method D: MH+ mlz 456, RT 1.26 minutes (95%). EXAMPLE 1068
4-[5-(l-([2-(Difluoromethoxy)phenyllm
pyrimidin-2-yl1tetrahydropyran-4-ol
Intermediate 154 (57 mg, 0.15 mmol) and Intermediate 50 (52 mg, 0.14 mmol) were dissolved in a mixture of 2M aqueous potassium carbonate solution (0.23 mL) and 1,4-dioxane (1 mL). The solution was degassed for 10 minutes under a stream of nitrogen, then PdCl2(dppf) complex with DCM (12 mg, 15 μιηοΐ) was added. The reaction mixture was heated under microwave irradiation at 110°C for 1 h. The reaction mixture was cooled to ambient temperature and treated with TBAF in THF (1M, 0.9 mL) for 1 h. The reaction mixture was concentrated under vacuum and injected onto a Biotage isolera 4 (Snap HP-sil lOg), eluting with 40-100% EtOAc in heptanes. The residue was purified by preparative HPLC (method A) to afford the title compound (18.6 mg, 24%) as a white solid. δΗ (500 MHz, CDC13) 8.87 (d, J 1.2 Hz, 2H), 7.58 (d, J 10.7 Hz, 1H), 7.38- 7.31 (m, 1H), 7.19 (dd, J 10.6, 7.3 Hz, 2H), 7.12 (t, J7.6 Hz, 1H), 6.68 (m, 2H), 5.42 (s, 2H), 4.02-3.92 (m, 4H), 2.63 (s, 3H), 2.44 (td, J 12.8, 6.1 Hz, 2H), 1.57 (d, J 11.9 Hz, 2H). LCMS Method D: MH+ mlz 485, RT 2.22 minutes (95%). EXAMPLE 1069
2- [5 -( 1 - ( [2-(Difluoromethoxy)-5 -fluorophenyllmethyll -5 -fluoro-2-methylbenzimidazol- 6-yl)pyrimidin-2-vHpropan-2-ol
Intermediate 156 (95%, 200 mg, 0.47 mmol), 2-[5-(4,4,5,5-tetramethyl-l,3,2- dioxaborolan-2-yl)pyrimidin-2-yl]propan-2-ol (137 mg, 0.52 mmol) and 2M aqueous sodium carbonate solution (0.71 mL) were dissolved in 1,4-dioxane (10 mL) and the mixture was degassed with nitrogen for 15 minutes. Pd(dppf)Cl2 complex with DCM (19 mg, 0.02 mmol) was added. The mixture was further degassed with nitrogen for 5 minutes before being heated to 100°C for 1 h. The reaction mixture was cooled to room temperature and diluted with ethyl acetate (10 mL), then filtered and evaporated under reduced pressure. The mixture was diluted with water and extracted with ethyl acetate. The organic phase was partitioned and dried over magnesium sulfate, then filtered, and the filtrate was evaporated under reduced pressure. The resulting crude material was purified by preparative HPLC (method C), and the resulting material was recrystallised from ethyl acetate/heptanes, to afford the title compound (107 mg, 49%) as a white solid. δΗ 500 MHz, DMSO-d6) 8-98 (s, 2H), 7.89 (d, J 6.8 Hz, 1H), 7.58 (d, J 11.2 Hz, 1H), 7.34 (t, J9.3 Hz, 1H), 7.20 (m, 1H), 7.10 (t, J 72.5 Hz, 1H), 6.86 (dd, J5.9, 2.9 Hz, 1H), 5.61 (s, 2H), 5.13 (s, 1H), 2.55 (s, 3H), 1.54 (s, 6H). LCMS Method D: MH+ mlz 461, RT 2.51 minutes (100%).
EXAMPLE 1070 2-Γ5-Γ1 - U1R or 1S)-1 -r2-(Difluoromethoxy phenvHethyl| -5-fluoro-2-methyl- benzimidazol-6-yl)pyrimidin-2-vHpropan-2-ol (Isomer B)
A solution of 2-[5-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)pyrimidin-2- yl]propan-2-ol (88 mg, 0.33 mmol) and Intermediate 158 (124 mg, 0.38 mmol) in 1,4- dioxane (6 mL) and 2M aqueous potassium carbonate solution (0.45 mL) was degassed with nitrogen for 10 minutes. Pd(dppf)Cl2 complex with DCM (12 mg, 0.015 mmol) was added and the mixture was stirred at 100°C under nitrogen for 1.5 h. The reaction mixture was allowed to cool to room temperature and filtered through sodium sulfate. The filtrate was concentrated under vacuum to give a dark oil which was loaded onto a 10 g HP-silica cartridge and eluted using Biotage Isolera 4 (from 0% to 85% ethyl acetate in heptanes). The resulting crude colourless solid (66 mg) was further purified by preparative HPLC (method D) to afford the title compound (43 mg, 32%>) as a colourless solid. δΗ (500 MHz, CDC13) 8.73 (d, J 1.4 Hz, 2H), 7.73-7.67 (m, 1H), 7.54 (d, J 10.7 Hz, 1H), 7.47 (td, J 7.8, 1.2 Hz, 1H), 7.43-7.36 (m, 1H), 7.11 (d, J 8.1 Hz, 1H), 7.07 (d, J6.5 Hz, 1H), 6.32 (dd, J74.5, 72.3 Hz, 1H), 5.99 (q, J7.2 Hz, 1H), 4.66 (s, 1H), 2.78 (s, 3H), 2.01 (d, J7.2 Hz, 3H), 1.67 (s, 6H). LCMS Method D: MH+ mlz 457, RT 2.26 minutes (94%).
EXAMPLE 1071
2-Γ5-Γ1 - U1R or 1S)-1 -r2-(Difluoromethoxy phenvHethyl| -5-fluoro-2-methyl- benzimidazol-6-yl)pyrimidin-2-vHpropan-2-ol (Isomer A)
A solution of 2-[5-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)pyrimidin-2- yl]propan-2-ol (143 mg, 0.54 mmol) and Intermediate 160 (180 mg, 0.45 mmol) in 1,4- dioxane (8 mL) and 2M aqueous potassium carbonate solution (0.7 mL) was degassed with nitrogen for 10 minutes. Pd(dppf)Cl2 complex with DCM (20 mg, 0.024 mmol) was added and the mixture was stirred at 100°C under nitrogen for 1.5 h. The reaction mixture was allowed to cool to room temperature and filtered through sodium sulfate. The filtrate was concentrated under vacuum to give a dark oil (361 mg) which was loaded onto a 10 g HP-silica cartridge and eluted using Biotage Isolera 4 (from 0% to 85% ethyl acetate in heptanes). Product fractions were combined and concentrated under vacuum. The resulting crude colourless solid (110 mg) was further purified by preparative HPLC (method D) to afford the title compound (71 mg, 34.5%) as a colourless solid. 5H (500 MHz, CDC13) 8.70 (d, J 1.4 Hz, 2H), 7.69-7.64 (m, 1H), 7.50 (d, J 10.8 Hz, 1H), 7.45 (td, J 7.9, 1.5 Hz, 1H), 7.39-7.32 (m, 1H), 7.09 (d, J 8.1 Hz, 1H), 7.03 (d, J6.5 Hz, 1H), 6.29 (dd, J74.6, 72.3 Hz, 1H), 5.96 (q, J7.2 Hz, 1H), 4.65 (s, 1H), 2.74 (s, 3H), 1.98 (d, J7.2 Hz, 3H), 1.64 (s, 6H). LCMS Method D: MH+ mlz 457, RT 2.25 minutes (100%).
EXAMPLE 1072
3 - [5 -( 1 - ( [2-(Difluoromethoxy)-5 -fluorophenyllmethyll -5 -fluoro-2-methylbenzimidazol- 6-yl)pyrimidin-2-yl"|oxetan-3-ol
Intermediate 156 (200 mg, 0.5 mmol), Intermediate 161 (50%>, 382 mg, 0.55 mmol) and 2M sodium carbonate solution (0.74 mL) were dissolved in 1,4-dioxane (10 mL) and the mixture was degassed with nitrogen for 15 minutes. Pd(dppf)Cl2 complex with DCM (20 mg, 0.02 mmol) was added. The mixture was further degassed with nitrogen for 5 minutes before being heated at 100°C for 2 h. The reaction mixture was cooled to room temperature and diluted with ethyl acetate (10 mL), then filtered and evaporated under reduced pressure. The crude material was dissolved in ethyl acetate (10 mL), then TBAF (1.24 mL) was added and the reaction mixture was stirred for 1 h at room temperature. The reaction mixture was washed with water (5 mL) and extracted with ethyl acetate (2 x 10 mL), then dried over magnesium sulfate, and filtered. The filtrate was evaporated under reduced pressure. The resulting crude material (100 mg) was purified by preparative HPLC (method C) to afford the title compound (46 mg, 19%>) as a white solid. δΗ (500 MHz, DMSO-dg) 9.04 (d, J 1.4 Hz, 2H), 7.89 (d, J 6.8 Hz, 1H), 7.57 (d, J 11.3 Hz, 1H), 7.31 (t, J 9.3 Hz, 1H), 7.20-7.13 (m, 1H), 7.08 (t, J 74 Hz, 1H), 6.84 (dd, J6.0, 3.0 Hz, 1H), 6.38 (br s, 1H), 5.59 (s, 2H), 5.00 (d, J 6.6 Hz, 2H), 4.70 (d, J 6.6 Hz, 2H), 2.53 (s, 3H). LCMS Method A: MH+ mlz 475, RT 3.21 minutes (99%). EXAMPLE 1073
5-(l - ([2-(Difluoromethoxy)phenyllmethyl| -2-methylbenzimidazol-6-yl)- 1 -(2,2,2- trifluoroethvDpyridin-2-one
Prepared by the method described above as Example 472: Alternative
Preparation. The title compound (56 mg, 18%) was obtained as a white solid. 5H (400 MHz, DMSO-dg) 8.02 (d, IH, J2.3 Hz), 7.89 (dd, IH, J2.7, 9.6 Hz), 7.64-7.60 (m, 2H), 7.40-7.25 (m, 3H), 7.36 (t, 1H, JH_F 73.9 Hz), 7.17-7.12 (m, IH), 6.69 (dd, IH, J 1.4, 7.7 Hz), 6.58 (d, IH, J9.6 Hz), 5.52 (s, 2H), 4.90 (q, 2H, JH_F 9.2 Hz), 2.48 (s, 3H). LCMS (pH 10): MH+ (464), RT 2.05 minutes, 98% purity by UV.
EXAMPLE 1074 l-( [2-(Difluoromethoxy)phenyllmethyl| -2-methyl-6- (6-[4-(2,2-difluoroethyl)piperazin- 1 -yl]pyridin-3-yl|benzimidazole
Example 490 and 2,2-difluoroethyl tosylate (125 mg, 0.53 mmol) were dissolved in acetonitrile (2 mL) and heated under microwave irradiation at 210°C (18 bar pressure) for 30 minutes. The mixture was purified by column chromatography on silica gel (eluting with 0 to 5% methanol gradient in dichloromethane), then preparative HPLC, to give the title compound (63 mg, 22%>) as a white solid after freeze drying. 5H (400 MHz, DMSO-dg) 8.42 (d, 1H, J2.3 Hz), 7.82 (dd, 1H, J2.5, 8.9 Hz), 7.64 (d, 1H, J 1.3 Hz), 7.59 (d, 1H, J 8.3 Hz), 7.43-7.36 (m, 2H), 7.35 (t, 1H, JH_F 73.8 Hz), 7.26 (d, 1H, J 8.3 Hz), 7.18-7.14 (m, 2H), 6.91 (d, 1H, J 8.9 Hz), 6.78 (dd, IH, J 1.3, 8.3 Hz), 6.19 (tt, 1H, J 4.3, 55.7 Hz), 3.55-3.51 (m, 4H), 2.79 (dt, 2H, J4.3, 15.7 Hz), 2.65-2.60 (m, 4H), 2.48 (s, 3H). LCMS (pH 10): MH+ (514.8), RT 2.42 minutes, 96% purity by UV.
EXAMPLE 1075 1 -[ 1 - {[2-(Difluoromethoxy)phenyllmethyl| -6-(6-methoxypyridin-3-yl)benzimidazol-2- yll-2,2,2-trifluoroethanol
Intermediate 162 (1.00 g, 2.44 mmol) was dissolved in dry THF (30 mL) and trifluoromethyl trimethylsilane (416 mg, 2.93 mmol) was added, followed by caesium fluoride (445 mg, 2.93 mmol). The mixture was stirred at room temperature under nitrogen for 1 h. The mixture was quenched with saturated aqueous ammonium chloride solution (100 mL) and extracted with ethyl acetate (100 mL). The organic layer was dried (Na2S04) and concentrated in vacuo. A quarter of the resulting material was dissolved in methanol (20 mL) and 2M aqueous sodium carbonate solution (20 mL) was added. After stirring for 1 h, the mixture was extracted into ethyl acetate and washed with water. The organic layer was dried (Na2S04) and concentrated in vacuo. The residue was purified by chromatography on silica gel (eluting 0 to 6% methanol gradient in dichloromethane) to give the title compound (300 mg, 26%) as a pale purple solid. δΗ (400 MHz, DMSO-d6) 8.43 (d, IH, J2.2 Hz), 7.97 (dd, IH, J 8.6, 2.6 Hz), 7.82 (d, IH, J 8.4 Hz), 7.60 (m, 2H), 7.34 (m, 4H), 7.10 (m, IH), 6.89 (d, 1H, J 8.6 Hz), 6.62 (m, IH), 5.73 (s, 2H), 5.64 (m, IH), 3.87 (s, 3H). LCMS (pH 10): MH+ (480.6), RT 2.47 minutes, 98% purity by UV. EXAMPLE 1076
1 -[ 1 - {[2-(Difluoromethoxy)phenyllmethyl| -6-(6-methoxypyridin-3-yl)benzimidazol-2- yl] -2-methylpropan- 1 -ol
Intermediate 162 (112 mg, 0.27 mmol) was dissolved in dry THF, cooled to -15°C with an ice/CaCl2 bath, and isopropylmagnesium chloride (2M in diethyl ether, 160 μί, 0.32 mmol) was added. The reaction mixture was warmed to room temperature and stirred for 3 h. The reaction mixture was quenched with water, extracted with ethyl acetate and concentrated in vacuo. Purification by preparative HPLC gave the title compound (14 mg, 11%) as a white solid. δΗ (400 MHz, DMSO-d6) 8.43 (dd, IH, J2.5, 0.5 Hz), 7.97 (dd, IH, J 8.6, 2.6 Hz), 7.73 (d, IH, J 8.4 Hz), 7.63 (s, IH), 7.49 (dd, 1H, J 8.4, 1.7 Hz), 7.32 (m, 4H), 7.10 (m, IH), 6.88 (dd, IH, J 8.6, 0.5 Hz), 6.55 (dd, 1H, J7.8, 1.1 Hz), 5.71 (m, 3H), 4.38 (dd, 1H, J 8.6, 6.0 Hz), 3.87 (s, 3H), 2.16 (m, IH), 1.01 (d, 3H, J 6.6 Hz), 0.70 (d, 3H, J 6.7 Hz). LCMS (pH 10): MH+ (454.7), RT 2.48 minutes, 95% purity by UV. EXAMPLE 1077 l-([2-(Difluoromethoxy)phenyllmethyl|-6-[(6-methoxypyridin-2-yl)m
benzimidazole
The title compound was prepared from Intermediate 165 and the appropriate boronic acid in accordance wit Method L. QC LCMS m/z 410 [M+H]+, RT 1.56 minutes.
EXAMPLE 1078
l-([2-(Difluoromethoxy)phenyllmethyl|-2-methyl-6-[(2-methylpyridin-4-yl)methyll- benzimidazole
The title compound was prepared from Intermediate 165 and the appropriate boronic acid using a method analogous to Method L. QC LCMS m/z 394 [M+H]+, RT 1.41 minutes.
EXAMPLE 1079 1 - r2-(Difluoromethoxy)benzvH -2-methyl-5 - r(2-methylpyridin-4-yl)methyl1 - \H- benzimidazole
The title compound was prepared from Intermediate 166 and the appropriate boronic acid using a method analogous to Method L. QC LCMS m/z 394 [M+H]+, RT 1.55 minutes.
EXAMPLE 1080
1 - r2-(Difluoromethoxy)benzvH -5 - r(6-methoxypyridin-3 -vDmethyll -2 -methyl- 1H- benzimidazole
The title compound was prepared from Intermediate 166 and the appropriate boronic acid using a method analogous to Method L. QC LCMS m/z 410 [M+H]+, RT 1.51 minutes. EXAMPLE 1081
1 - [2-(Difluoromethoxy)benzyl] -2-methyl-5 - ( [6-(morpholin-4-yl)pyridin-3 -yl]methyl| - lH-benzimidazole
The title compound was prepared from Intermediate 166 and the appropriate boronic acid using a method analogous to Method L. QC LCMS mlz 465 [M+H]+, RT 1.53 minutes.
EXAMPLE 1082
6-Bromo- 1 -(2,5-dichlorobenzyl)-5-fluoro-2-(methoxymethyl)- lH-benzimidazole
The title compound was prepared using a method analogous to Method K, starting from l-bromo-2,5-difluoro-4-nitrobenzene and 2,5-dichlorobenzylamine, and effecting benzimidazole formation with methoxyacetic acid. LCMS (pH 10): m/z 419.5, RT 2.85 minutes.
EXAMPLE 1083
5-(l-r2-(Difluoromethoxy)benzyl1-5-fluoro-2-(methoxymethyl)-lH-benzimidazol-6-yl|- pyridin-2(lH)-one
The title compound was prepared from Intermediate 173 and 5 -(4,4, 5,5 - tetramethyl-l,3,2-dioxaborolan-2-yl)-lH-pyridin-2-one in accordance with Method L. LCMS (pH 10): m/z 430.6, RT 1.70 minutes. EXAMPLE 1084
5-[ 1 -(2,5-Dichlorobenzyl)-5-fluoro-2-(methoxymethyl)- lH-benzimidazol-6-yllpyridin- 2(lH)-one
The title compound was prepared from Example 1082 and 5-(4,4,5,5-tetramethyl- l,3,2-dioxaborolan-2-yl)-lH-pyridin-2-one in accordance with Method L. LCMS (pH 10): m/z 432.6 [M+H]+, RT 1.88 minutes. EXAMPLE 1085
Methyl 4- { 1 -[2-(difluoromethoxy)benzyl]-2-methyl- lH-benzimidazol-6-yl|piperidine-l - carboxylate
The title compound was prepared using a method analogous to that used to prepare
Example 533 from Intermediate 122 and methyl chloroformate. QC LCMS mlz 430
[M+H]+, RT 1.46 minutes.
EXAMPLE 1086
1 -(2,5-Dichlorobenzyl)-2-methyl-6-(lH-l ,2,3-triazol- 1 -ylmethyl)- IH-benzimidazole
The title compound was prepared from Intermediate 165 and 1,2,3-triazole using a method analogous to Method B. QC LCMS mlz 372 [M+H]+, RT 1.35 minutes. EXAMPLE 1087
N- { \ 1 -(2,5-Dichlorobenzyl)-2 -methyl- lH-benzimidazol-6-yllmethyl| -N,2-dimethyl- propanamide
The title compound can be prepared from Intermediate 165 by treatment with methylamine followed by concentration in vacuo and subsequent acylation with 2- methylpropanoic acid using a method analogous to Method G. QC LCMS mlz 404
[M+H]+, RT 1.47 minutes.
EXAMPLE 1088 l-(2,5-Dichlorobenzyl)-2-methyl-5-[(2-methyl-lH-imidazol-l-yl)methyll-lH- benzimidazole
The title compound was prepared from Intermediate 166 and 2-methylimidazole using a method analogous to Method B. QC LCMS mlz 385 [M+H]+, RT 1.41 minutes. EXAMPLE 1089
1 -(2,5-Dichlorobenzyl)-2-methyl-5-(lH-l ,2,3-triazol- 1 -ylmethyl)- lH-benzimidazole
The title compound was prepared from Intermediate 166 and 1,2,3-triazole using a method analogous to Method B. QC LCMS mlz 372 [M+H]+, RT 1.39 minutes.
EXAMPLE 1090
N- (Γ 1 -(2,5-Dichlorobenzyl)-2 -methyl- lH-benzimidazol-5-yl1methyl| -N-methyl- cyclopropanecarboxamide
The title compound can be prepared from Intermediate 166 by treatment with methylamine followed by concentration in vacuo and subsequent acylation with cyclopropanecarboxylic acid using a method analogous to Method G. QC LCMS mlz 402 [M+H]+, RT 1.48 minutes.
EXAMPLE 1091
1 -(2,5-Dichlorobenzyl)-2-methyl- lH-benzimidazol-6-yl methanesulfonate
The title compound was prepared from Intermediate 101 and methanesulphonyl chloride according to the preparation of Example 1014. QC LCMS mlz 385 [M+H]+, RT 1.46 minutes.
EXAMPLE 1092
1 -(2,5-DichlorobenzvD-2-methyl- lH-benzimidazol-6-yl 4-methylbenzenesulfonate
The title compound was prepared from Intermediate 101 and toluenesulphonyl chloride according to the preparation of Example 1014. QC mlz 461 [M+H]+, LCMS RT 1.66 minutes. EXAMPLE 1093
2-Methyl- 1 -( 1 -phenylethyl)- lH-benzimidazol-6-yl trifluoromethanesulfonate
The title compound was prepared from Intermediate 174 and trifluoromethane- sulphonyl chloride according to the preparation of Example 1014. QC LCMS mlz 385 [M+H]+, RT 1.62 minutes.
EXAMPLE 1094 l-(2,5-Dichlorobenzyl)-N,N,2-trimethyl-lH-benzimidazole-6-carboxamide
The title compound was prepared from Intermediate 100 and dimethylamine by a method analogous to that described for Example 1011. QC LCMS mlz 362 [M+H]+, RT 1.35 minutes. EXAMPLE 1095
1- (2,5-Dichlorobenzyl)-2-methyl-5-(oxetan-3-yloxy)-lH-benzimidazole
The title compound was prepared from Intermediate 103 using a method analogous to that used to prepare Intermediate 102. QC LCMS mlz 363 [M+H]+, RT 1.47 minutes.
EXAMPLE 1096
2- {ri-(2,5-Dichlorobenzyl)-2-methyl-lH-benzimidazol-5-yl1oxyl-N,N-dimethyl- ethanamine
The title compound was prepared from Intermediate 103 using a method analogous to that used to prepare Intermediate 102. QC LCMS mlz 378 [M+H]+, RT 1.45 minutes. EXAMPLE 1097
1 -(2,5-Dichlorobenzyl)-2-methyl- lH-benzimidazol-5-yl methanesulfonate
The title compound was prepared from Intermediate 103 and methanesulphonyl chloride according to the preparation of Example 1014. QC LCMS mlz 385 [M+H]+, RT 1.48 minutes.
EXAMPLE 1098 5-(Azetidin-3-yloxy)- 1 -(2,5-dichlorobenzvD-2-methyl- lH-benzimidazole
The title compound was prepared from Intermediate 103 by a method analogous to that used to prepare Intermediate 102 and Example 1018. QC LCMS mlz 362 [M+H]+, RT 1.37 minutes. EXAMPLE 1099
1 -(3- ( [ 1 -(2,5-Dichlorobenzyl)-2 -methyl- lH-benzimidazol-5-ylloxy| azetidin- 1 - yPethanone
The title compound can be prepared from Example 1098 using the method of Example 1020. QC LCMS mlz 404 [M+H]+, RT 1.41 minutes.
EXAMPLE 1100
5- ( 1 -r2-(Difluoromethoxy)benzvH-2-methyl- lH-benzimidazol-6-yl|pyridin-2-amine
The title compound can be prepared from Intermediate 47 and the appropriate boronic acid using a method analogous to Method L. LCMS (pH 10): mlz 381 [M+H]+, RT 1.79 minutes. EXAMPLE 1101
N-[5-(l-([2-(Difluoromethoxy)phenyllmethyl|-2-methylbenzimidazo
N-(prop-2-enoyl)prop-2-enamide
The title compound can be prepared from Example 1100 by deprotonation of the aniline with 2 equivalents of sodium hydride and treatment with 2 equivalents of acryloyl chloride in tetrahydrofuran. LCMS (pH 10): mlz 489 [M+H]+, RT 2.25 minutes.
EXAMPLE 1102
(l-[(2,5-Dimethylphenyl)methyll-6-[4-(piperazin-l-yl)phenyllbenzimidazol-2-yl|- (phenyl)methanol
A mixture of Intermediate 175 (200 mg, 0.47 mmol), 4-[4-(tert-butoxycarbonyl)- piperazinyljphenylboronic acid pinacol ester (364 mg, 0.95 mmol) and Pd(PPh3)4 (30 mg, 0.026 mmol) in 1,4-dioxane (10 mL) and 2M aqueous Na2C03 solution (2 mL) was degassed and flushed with N2 three times. The reaction mixture was heated with stirring at 90°C until TLC or LCMS analysis indicated that the reaction was complete. The reaction mixture was allowed to cool to room temperature and evaporated in vacuo. The crude residue was suspended in EtOAc (30 mL) and washed with water. The aqueous phases were extracted with further EtOAc (4 x 30 mL) and the combined organic layers dried (MgS04), filtered and concentrated in vacuo. The crude product was purified by chromatography (Si02; 2-50% EtOAc in DCM). The resulting yellow solid (160 mg) was dissolved in DCM (5 mL) and a 4N solution of HC1 in 1,4-dioxane (1 mL) was added. The mixture was stirred at r.t. for 2 h, then concentrated in vacuo. The residue was purified by preparative chromatography to afford the title compound (70 mg, 27%) as an off-white solid. δΗ (CD3OD, 400 MHz) 7.75 (d, J 8.46 Hz, IH), 7.52 (d, J 6.94 Hz, IH), 7.39-7.50 (m, 4H), 7.15-7.25 (m, 4H), 7.03 (d, J 6.96 Hz, 3H), 6.86 (d, J7.6 Hz, IH), 6.18 (s, IH), 5.93 (s, IH), 5.50 (dd, J 17.0 Hz, 2H), 3.32-3.43 (m, 8H), 2.27 (s, 3H), 1.94 (s, 3H). LCMS (ES+) (M+H)+ 502, RT 2.43 minutes. EXAMPLE 1103
(l-[(2,5-Dimethylphenyl)methyllbenzimidazol-2-yl|(3-fluoropyridin-4-
The title compound (162 mg, 19%) was synthesised from Intermediate 2 and 3- fluoropyridine-4-carbaldehyde in accordance with Method C. δΗ (400 MHz, DMSO-d6) 8.46 (d, J4.8 Hz, 1H), 8.43 (d, J 1.2 Hz, 1H), 7.76 (t, J5.6 Hz, 1H), 7.62-7.68 (m, 1H), 7.34-7.40 (m, 1H), 7.20-7.29 (m, 2H), 7.10-7.12 (m, 1H), 6.95 (d, J7.5 Hz, 1H), 6.20 (s, 1H), 6.09 (s, 1H), 5.64 (d, J 18.2 Hz, 2H), 2.36 (s, 3H), 2.02 (s, 3H). LCMS (pH 10): (ES+) (M+H)+ 362, RT 1.98 minutes.
EXAMPLE 1104
(l-r(2,5-Dimethylphenyl)methyl1-6-r4-(piperazin-l-yl)phenyl1benzimidazol-2-yl|- (pyridin-4-yl)methanol
The title compound was synthesised from Intermediate 30 in accordance with the method described for Example 1102. QC LCMS: m/z 504 (M+H)+, RT 1.99 minutes.
EXAMPLE 1105 ( 1 -r(2,5-Dimethylphenyl)methyl1-5-(trifluoromethyl)benzimidazol-2-yl| -(pyridin-4-yl)- methanol
The title compound was synthesised from Intermediate 176 and pyridine-4- carbaldehyde in accordance with Method C. QC LCMS: m/z 412 (M+H)+, RT 2.38 minutes.

Claims

Claims:
1. A compound of formula (I) or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof:
Figure imgf000322_0001
wherein
E represents a covalent bond; or E represents -S(0)2- or -N(R4)-; or E represents an optionally substituted straight or branched Ci_4 alkylene chain;
Q represents a covalent bond; or Q represents -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- or -N(R5)S(0)2-; or Q represents an optionally substituted straight or branched Ci_6 alkylene chain optionally comprising one, two or three heteroatom-containing linkages independently selected from -0-, -S-, -S(O)-, -S(0)2-, -N(R5)-, -C(0)N(R5)-, -N(R5)C(0)-, -S(0)2N(R5)- and -N(R5)S(0)2-;
Y represents C3_7 cycloalkyl, aryl, C3_7 heterocycloalkyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents;
Z represents hydrogen, halogen or trifluoromethyl; or Z represents Ci_6 alkyl, C3_7 cycloalkyl, aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; or Z represents -Ί}-Ί} or -Z1-C(0)-Z2, either of which moieties may be optionally substituted by one or more substituents;
Z1 represents a divalent radical derived from an aryl, C3_7 heterocycloalkyl or heteroaryl group;
Z2 represents aryl, C3_7 heterocycloalkyl, C3_7 heterocycloalkenyl,
(C4_9)heterobicycloalkyl, (C4_9)spiroheterocycloalkyl or heteroaryl;
R1, R2 and R3 independently represent hydrogen, halogen, cyano, nitro, hydroxy, trifluoromethyl, trifluoromethoxy, -ORa, -SRa, -SORa, -S02Ra, -OS02Ra, -SF5, -NRbRc, -NRcCORd, -NRcC02Rd, -NHCONRbRc, -NRcS02Re, -N(S02Re)2, -NHS02NRbRc, -CORd, -C02Rd, -CONRbRc, -CON(ORa)Rb or -S02NRbRc; or Ci_6 alkyl, C2_6 alkenyl, C2_6 alkynyl, C3-7 cycloalkyl, C4-7 cycloalkenyl, C3-7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3-7 heterocycloalkyl, C3-7 heterocycloalkyl(Ci_6)alkyl, C3-7
heterocycloalkenyl, C4_g heterobicycloalkyl, heteroaryl, heteroaryl(Ci_6)alkyl,
(C3_7)heterocycloalkyl-aryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl- (C3_7)heterocycloalkyl-, (C3-7)cycloalkyl-heteroaryl-, (C3-7)cycloalkyl-(Ci_6)alkyl- heteroaryl-, (C4_7)cycloalkenyl -heteroaryl-, (C4_9)bicycloalkyl-heteroaryl-,
(C3_7)heterocycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl-heteroaryl-, (C4_9)heterobicycloalkyl -heteroaryl-,
(C4_9)spiroheterocycloalkyl-heteroaryl- or (C3_7)heterocycloalkyl-heteroaryl(Ci_6)alkyl-, any of which groups may be optionally substituted by one or more substituents;
R4 and R5 independently represent hydrogen or Ci_6 alkyl;
Ra represents trifluoromethyl; or Ci_6 alkyl, C3_7 cycloalkyl, C3_7 cycloalkyl(Ci_6)- alkyl, aryl, aryl(Ci_6)alkyl, C3-7 heterocycloalkyl, C3-7 heterocycloalkyl(Ci_6)alkyl, heteroaryl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents;
Rb and Rc independently represent hydrogen or trifluoromethyl; or Ci_6 alkyl, C3-7 cycloalkyl, C3_7 cycloalkyl(Ci_6)alkyl, aryl, aryl(Ci_6)alkyl, C3_7 heterocycloalkyl, C3_7 heterocycloalkyl(Ci_6)alkyl, heteroaryl or heteroaryl(Ci_6)alkyl, any of which groups may be optionally substituted by one or more substituents; or
Rb and Rc, when taken together with the nitrogen atom to which they are both attached, represent azetidin-l-yl, pyrrolidin-l-yl, oxazolidin-3-yl, isoxazolidin-2-yl, thiazolidin-3-yl, isothiazolidin-2-yl, piperidin-l-yl, morpholin-4-yl, thiomorpholin-4-yl, piperazin-l-yl, homopiperidin-l-yl, homomorpholin-4-yl or homopiperazin-l-yl, any of which groups may be optionally substituted by one or more substituents;
Rd represents hydrogen; or Ci_6 alkyl, C3-7 cycloalkyl, aryl, C3-7 heterocycloalkyl or heteroaryl, any of which groups may be optionally substituted by one or more substituents; and
Re represents Ci_6 alkyl, aryl or heteroaryl, any of which groups may be optionally substituted by one or more substituents;
for use in the treatment and/or prevention of disorders for which the administration of a modulator of T Fa function is indicated.
2. A compound of formula (I) as depicted in claim 1, or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, wherein
Y represents phenyl or thiazolyl, either of which groups may be optionally substituted by one or more substituents;
R1 represents heteroaryl or (C3_7)heterocycloalkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents; and
E, O, Z, R2 and R3 are as defined in claim 1.
3. A compound of formula (IIA) or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof:
Figure imgf000324_0001
wherein
R11 represents halogen or cyano; or Ci_6 alkyl, aryl, C3-7 heterocycloalkyl, C3-7 heterocycloalkenyl, heteroaryl, heteroaryl(Ci_6)alkyl, (C3_7)heterocycloalkyl-aryl-, (C3_7)heterocycloalkyl(Ci_6)alkyl-aryl-, heteroaryl-(C3_7)heterocycloalkyl-, (C3-7)- cycloalkyl-heteroaryl-, (C3_7)cycloalkyl(Ci_6)alkyl-heteroaryl-, (C4_7)cycloalkenyl- heteroaryl-, (C4_9)bicycloalkyl-heteroaryl-, (C3_7)heterocycloalkyl-heteroaryl-, (C3-7)- heterocycloalkyl(Ci_6)alkyl-heteroaryl-, (C3_7)heterocycloalkenyl -heteroaryl-, (C4-c>)- heterobicycloalkyl-heteroaryl- or (C4_9)spiroheterocycloalkyl-heteroaryl-, any of which groups may be optionally substituted by one or more substituents;
R12 represents represents hydrogen, halogen, trifluoromethyl or optionally substituted Ci_6 alkyl; R15 and R16 independently represent hydrogen, halogen, cyano, nitro, Ci_6 alkyl, trifluoromethyl, hydroxy, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, Ci_6 alkylthio, Ci_6 alkylsulfmyl, Ci_6 alkylsulfonyl, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, arylamino, C2_6 alkylcarbonylamino, Ci_6 alkylsulfonylamino, formyl, C2_6 alkylcarbonyl, C3_6 cycloalkylcarbonyl, C3_6 heterocycloalkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulfonyl, Ci_6 alkylaminosulfonyl or di(Ci_6)alkylaminosulfonyl; and
E, Q and Z are as defined in claim 1.
4. A compound as claimed in claim 3 wherein R11 represents heteroaryl or (C3_7)heterocycloalkyl-heteroaryl-, either of which groups may be optionally substituted by one or more substituents.
5. A compound as claimed in claim 3 represented by formula (IIB) or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof:
Figure imgf000325_0001
(IIB) wherein
V represents C-R22 or N;
R21 represents hydrogen, halogen, cyano, Ci_6 alkyl, trifluoromethyl, C2_6 alkenyl, C2_6 alkynyl, hydroxy, hydroxy(Ci_6)alkyl, Ci_6 alkoxy, difluoromethoxy, trifluoromethoxy, trifluoroethoxy, Ci_6 alkoxy(Ci_6)alkyl, Ci_6 alkylthio, Ci_6 alkylsulphonyl, amino, Ci_6 alkylamino, di(Ci_6)alkylamino, hydroxy(Ci_6)alkylamino, (Ci_6)alkoxy(Ci_6)- alkylamino, [(C i _6)alkoxy] (hydroxy)(C i _6)alkylamino, N-[(C i _6)alkyl] -N- [hydroxy(C i_6)- alkyl] amino, [(C i _6)alkylthio](hydroxy)(C i _6)alkylamino, di(C i _6)alkylamino(C i _6)alkyl- amino, N-[di(Ci_6)alkylamino(Ci_6)alkyl]-N-[hydroxy(Ci_6)alkyl]amino, hydroxy(Ci_6)- alkyl(C3_7)cycloalkylamino, (hydroxy)[(C3_7)cycloalkyl(Ci_6)alkyl]amino, (C3-7)- heterocycloalkyl(Ci_6)alkylamino, oxo(C3_7)heterocycloalkyl(Ci_6)alkylamino, (Ci_6)alkyl- heteroarylamino, heteroaryl(Ci_6)alkylamino, (Ci_6)alkylheteroaryl(Ci_6)alkylamino, C2_6 alkylcarbonylamino, N- [(C i _6)alkyl] -N- [(C2_6)alkylcarbonyl] amino, bis [(C3_6)alkenyl- carbonyl] amino, N-[carboxy(Ci_6)alkyl]-N-[(Ci_6)alkyl]amino, C2_6 alkoxycarbonylamino, C2_6 alkoxycarbonyl(Ci_6)alkylamino, Ci_6 alkylsulphonylamino, N-[(Ci_6)alkyl]-N-[(Ci_6)- alkylsulphonyl] amino, formyl, C2_6 alkylcarbonyl, carboxy, C2_6 alkoxycarbonyl, aminocarbonyl, Ci_6 alkylaminocarbonyl, hydroxy(Ci_6)alkylaminocarbonyl, di(Ci_6)alkyl- aminocarbonyl, aminocarbonyl(Ci_6)alkyl, aminosulphonyl, Ci_6 alkylaminosulphonyl or di(Ci_6)alkylaminosulphonyl; or R21 represents (C3_7)cycloalkyl, (C3_7)cycloalkyl(Ci_6)- alkyl, (C4-7)cycloalkenyl, (C4-9)bicycloalkyl, (C3_7)heterocycloalkyl, (C3-7)- heterocycloalkyl(Ci_6)alkyl, (C3_7)heterocycloalkenyl, (C4-9)heterobicycloalkyl or
(C4_9)spiroheterocycloalkyl, any of which groups may be optionally substituted by one or more substituents;
R22 represents hydrogen, halogen or Ci_6 alkyl;
R23 represents hydrogen or Ci_6 alkyl;
E, Q and Z are as defined in claim 1 ; and
R12, R15 and R16 are as defined in claim 3.
6. A compound as claimed in claim 5 wherein R21 represents hydroxy(Ci_6)alkyl.
7. A compound as claimed in claim 5 represented by formula (IIC), (IID), (HE), (IIF), (IIG), (IIH), (IIJ), (IIK) or (IIL) or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof:
Figure imgf000326_0001
-326-
Figure imgf000327_0001
Figure imgf000327_0002
Figure imgf000328_0001
wherein
T represents -CH2- or -CH2CH2-;
W represents O, S, S(O), S(0)2, N(R31) or C(R32)(R33);
-M- represents -CH2- or -CH2CH2-;
R31 represents hydrogen, hydroxy(Ci_6)alkyl, cyano(Ci_6)alkyl, Ci_6 alkyl, trifluoro- methyl, difluoroethyl, trifluoroethyl, Ci_6 alkylsulphonyl, (Ci_6)alkylsulphonyl(Ci_6)alkyl, formyl, C2_6 alkylcarbonyl, carboxy, carboxy(Ci_6)alkyl, C2_6 alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, a carboxylic acid isostere or prodrug moiety Ω, -(Ci_6)alkyl-Q, aminocarbonyl, Ci_6 alkylaminocarbonyl, di(Ci_6)alkylaminocarbonyl, aminosulphonyl or di(C i _6)alkylaminosulphonyl;
R32 represents halogen, Ci_6 alkoxy, carboxy, carboxy(Ci_6)alkyl, C2_6
alkoxycarbonyl, C2_6 alkoxycarbonyl(Ci_6)alkyl, aminocarbonyl, a carboxylic acid isostere or prodrug moiety Ω, or -(Ci_6)alkyl-Q;
R33 represents hydrogen, halogen, Ci_6 alkyl or amino; R represents hydrogen, halogen, hydroxy, Ci_6 alkoxy, Ci_6 alkylthio, Ci_6 alkylsulphinyl, Ci_6 alkylsulphonyl, amino, Ci_6 alkylamino or di(Ci_6)alkylamino;
E, Q and Z are as defined in claim 1 ;
R12, R15 and R16 are as defined in claim 3; and
V, and R23 are as defined in claim 5.
8. A compound as claimed in claim 7 wherein R34 represents hydrogen or hydroxy.
9. A compound as claimed in any one of claims 2 to 8 wherein E represents
-CH2- or -CH(CH3)-.
10. A compound as claimed in any one of claims 3 to 9 wherein R12 represents hydrogen or fluoro.
1 1. A compound as claimed in any one of claims 3 to 10 wherein R15 represents difluoromethoxy.
12. A compound as herein specifically disclosed in any one of Examples 2, 3A, 3B, 5-531 , 532-540, and 541 -1 105.
13. A compound of formula (I) as defined in claim 1 or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, for use in the treatment and/or prevention of an inflammatory or autoimmune disorder, a neurological or neurodegenerative disorder, pain or a nociceptive disorder, a cardiovascular disorder, a metabolic disorder, an ocular disorder, or an oncological disorder.
14. A pharmaceutical composition comprising a compound of formula (I) as defined in claim 1 or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof, in association with a pharmaceutically acceptable carrier.
15. A pharmaceutical composition as claimed in claim 14 further comprising an additional pharmaceutically active ingredient.
16. A method for the treatment and/or prevention of disorders for which the administration of a modulator of T Fa function is indicated which comprises
administering to a patient in need of such treatment an effective amount of a compound of formula (I) as defined above or an N-oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof.
17. A method for the treatment and/or prevention of an inflammatory or autoimmune disorder, a neurological or neurodegenerative disorder, pain or a nociceptive disorder, a cardiovascular disorder, a metabolic disorder, an ocular disorder, or an oncological disorder, which comprises administering to a patient in need of such treatment an effective amount of a compound of formula (I) as defined above or an N- oxide thereof, or a pharmaceutically acceptable salt or solvate thereof, or a glucuronide derivative thereof, or a co-crystal thereof.
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