Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
  • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
  • C07D471/04—Ortho-condensed systems
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
  • A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
  • A61K31/437—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
  • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents
  • A61P35/02—Antineoplastic agents specific for leukemia
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents
  • A61P35/04—Antineoplastic agents specific for metastasis
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00

Definitions

• the present invention relates to triazolopyridine compounds of general formula (I) as described and defined herein, to methods of preparing said compounds, to pharmaceutical compositions and combinations comprising said compounds, to the use of said compounds for manufacturing a pharmaceutical composition for the treatment or prophylaxis of a disease, as well as to intermediate compounds useful in the preparation of said compounds.
• the present invention relates to chemical compounds that inhibit Mps-1 (Monopolar Spindle 1 ) kinase (also known as Tyrosine Threonine Kinase, TTK).
• Mps-1 is a dual specificity Ser/Th r kinase which plays a key role in the activation of the mitotic checkpoint (also known as spindle checkpoint, spindle assembly checkpoint) thereby ensuring proper chromosome segregation during mitosis [Abrieu A et al. , Cell, 2001 , 106, 83-93] . Every dividing cell has to ensure equal separation of the replicated chromosomes into the two daughter cells.
• chromosomes Upon entry into mitosis, chromosomes are attached at their kinetochores to the microtubules of the spindle apparatus.
• the mitotic checkpoint is a surveillance mechanism that is active as long as unattached kinetochores are present and prevents mitotic cells from entering anaphase and thereby completing cell division with unattached chromosomes [Suijkerbuijk SJ and Kops GJ, Biochemica et Biophysica Acta, 2008, 1786, 24-31 ; Musacchio A and Salmon ED, Nat Rev Mol Cell Biol. , 2007, 8, 379-93] . Once all kinetochores are attached in a correct amphitelic, i. e.
• the mitotic checkpoint consists of complex network of a number of essential proteins, including members of the MAD (mitotic arrest deficient, MAD 1 -3) and Bub (Budding uninhibited by benzimidazole, Bub 1 -3) families, the motor protein CENP-E, Mps-1 kinase as well as other components, many of these being over-expressed in proliferating cells (e.g. cancer cells) and tissues [Yuan B et al., Clinical Cancer Research, 2006, 12, 405-10].
• Mps-1 kinase activity in mitotic checkpoint signalling has been shown by shRNA-silencing, chemical genetics as well as chemical inhibitors of Mps-1 kinase [Jelluma N et al. , PLos ONE, 2008, 3, e2415; Jones MH et al. , Current Biology, 2005, 15, 160-65; Dorer RK et al., Current Biology, 2005, 15, 1070-76; Schmidt M et al., EMBO Reports, 2005, 6, 866-72].
• mitotic checkpoint abrogation through pharmacological inhibition of Mps-1 kinase or other components of the mitotic checkpoint represents a new approach for the treatment of proliferative disorders including solid tumours such as carcinomas and sarcomas and leukaemias and lymphoid malignancies or other disorders associated with uncontrolled cellular proliferation.
• WO 2009/024824 A1 discloses 2-Anilinopurin-8-ones as inhibitors of Mps-1 for the treatment of proliferate disorders.
• WO 2010/124826 A1 discloses substituted imidazoquinoxaline compounds as inhibitors of Mps-1 kinase or TTK.
• WO 201 1 /026579 A1 discloses substituted aminoquinoxa lines as Mps-1 inhibitors.
• Substituted triazopyridine compounds have been disclosed for the treatment or prophylaxis of different diseases:
• WO 2008/025821 A1 (Cellzome (UK) Ltd) relates to triazole derivatives as kinase inhibitors, especially inhibitors of ITK or PI3K, for the treatment or prophylaxis of immunological, inflammatory or allergic disorders.
• Said triazole derivatives are exemplified as possessing an amide, urea, carbamate or aliphatic amine substituent in position 2.
• WO 2009/010530 A1 discloses bicyclic heterorayl compounds and their use as phosphatidylinositol (PI) 3-kinase. Among other compounds also substituted triazolopyridines are mentioned.
• WO 2009/027283 A1 discloses triazolopyridine compounds and their use as ASK (apoptosis signal-regulating kinase) inhibitors for the treatment of autoimmune diseases and neurodegenerative diseases.
• WO 2009/047514 A1 (Cancer Research Technology Limited) relates to [1 ,2,4]- triazolo-[1 ,5-a] -pyridine and [1 ,2,4]-triazolo-[1 ,5-c]-pyrimidine compounds which inhibit AXL receptor tyrosine kinase function, and to the treatment of diseases and conditions that are mediated by AXL receptor tyrosine kinase, that are ameliorated by the inhibition of AXL receptor tyrosine kinase function etc., including proliferative conditions such as cancer, etc.
• Said compounds are exemplified as possessing a substituent in the 5-position of said compounds and a substituent in the 2-position.
• WO 2010/092041 A1 (Fovea Pharmaceuticals SA) relates to [1 ,2,4]-triazolo- [1 ,5-a]-pyridines, which are useful as selective kinase inhibitors, to methods for producing such compounds and methods for treating or ameliorating kinase- mediated disorder.
• said compounds of the present invention have surprisingly been found to effectively inhibit Mps-1 kinase and may therefore be used for the treatment or prophylaxis of diseases of uncontrolled cell growth, proliferation and/or survival, inappropriate cellular immune responses, or inappropriate cellular inflammatory responses or diseases which are accompanied with uncontrolled cell growth, proliferation and/or survival, inappropriate cellular immune responses, or inappropriate cellular inflammatory responses, particularly in which the uncontrolled cell growth, proliferation a nd/or survival, inappropriate cellular immune responses, or inappropriate cellular inflammatory responses is mediated by Mps-1 kinase, such as, for example, haemotological tumours, solid tumours, and/or metastases thereof, e.g.
• leukaemias and myelodysplastic syndrome including brain tumours and brain metastases
• tumours of the thorax including non-sm a l l ce l l a n d sm a l l ce l l l u n g tu m ou rs , gastrointestinal tumours, endocrine tumours, mammary and other gynaecological tumours, urological tumours including renal, bladder and prostate tumours, skin tumours, and sarcomas, and /or metastases thereof.
• WO201 1 /063908 is also related to triazolopyridine compounds as Mps-1 inhibitors.
• the effectiveness in inhibiting Mps-1 kinase was measured in an Mps- 1 kinase assay with a concentration of 10 ⁇ adenosine triphosphate (ATP).
• ATP adenosine triphosphate
• the cellular concentration of ATP in mammals is in the millimolar range. Therefore it is important that a drug substance is also effective in inhibiting Mps-1 kinase in a kinase assay with a concentration of ATP in the millimolar range, e.g. 2 mM ATP, in order to potentially achieve an antiproliferative effect in a cellular assay.
• a drug substance is hydrolytically stable in acidic medium, e.g. at pH 2, to avoid hydrolysis of the drug compound before absorption.
• the com pounds of the p resent i nvention have surprising and advantageous properties. These unexpected findings give rise to the present selection invention.
• the compounds of the present invention are purposively selected from the general formula of WO201 1 /063908 due to their superior inhibitory and stability properties.
• the present invention provides novel compounds of general formula (I):
• R 1 represents a phenyl or pyridyl group
• Oj represents a group selected from: N, CH, C-(G-C6-alkyl),
• Q 2 represents a group selected from: N, CH, CR b ;
• Q 3 represents a group selected from: N, CH, CR b ;
• R a represents a group selected from:
• halo-Ci-C6-alkoxy- hydroxy-Ci-C6-alkyl-, Ci-C6-alkoxy-Ci-C6-alkyl-, halo-Ci-C 6 -alkoxy-Ci-C 6 -alkyl-, R 8 -(Ci-C 6 -alkoxy)-, R 8 -0-, -NR 8 R 7 ,
• R b represents a group selected from:
• R 8 (CH 2 ) n (CHOH)(CH 2 )p-0-, R 8 -(Ci-C 6 -alkoxy-Ci-C 6 -alkyl)-,
• halo-Ci-C4-alkoxy- hydroxy-Ci-C4-alkyl-, Ci-C4-alkoxy-Ci-C4-alkyl-, halo-Ci-C4-alkoxy-Ci-C4-alkyl-, C 2 -C&-alkenyl-, C 2 -C&-alkynyl-,
• R 8 (CH 2 ) n (CHOH)(CH 2 )p-0-, R 8 -(Ci-C 6 -alkoxy-Ci-C 6 -alkyl)-,
• R 7 represents a hydrogen atom, a G -C6-alkyl- or a C3-C6-cycloalkyl- group
• R 8 represents a hydrogen atom or a G -C6-alkyl- or C3-C6-cycloalkyl- group, wherein said G -C6-alkyl- or C3-C6-cycloalkyl- group is optionally substituted, one or more times, identically or differently, with a substituent selected from:
• q represents an integer of 0, 1 , 2 or 3; or a stereoisomer, a tautomer, an N-oxide, a hydrate, a solvate, or a salt thereof, or a mixture of same.
• the triazolopyridine compounds of general formula (I) effectively inhibit Mps-1 kinase - even at high ATP concentrations - and show a high hydrolytic stability.
• the present invention relates to the triazolopyridine compounds of general formula (I) as described and defined herein, to methods of preparing said compounds, to pharmaceutical compositions and combinations comprising said compounds, to the use of said compounds for manufacturing a pharmaceutical composition for the treatment or prophylaxis of a disease, as well as to intermediate compounds useful in the preparation of said compounds.
• Preferred embodiments of the present invention are specified hereinafter as well as in the dependent claims.
• halogen atom or "halo-" is to be understood as meaning a fluorine, chlorine, bromine or iodine atom.
• Ci-C6-alkyl is to be understood as preferably meaning a linear or branched, saturated, monovalent hydrocarbon group having 1 , 2, 3, 4, 5, or 6 carbon atoms, e.g. a methyl, ethyl, propyl, butyl, pentyl, hexyl, iso-propyl, iso-butyl, sec-butyl, tert-butyl, iso-pentyl, 2-methylbutyl, 1 -methylbutyl, 1 - ethylpropyl, 1 ,2-dimethylpropyl, neo-pentyl, 1 , 1 -dimethylpropyl, 4- methylpentyl, 3-methylpentyl, 2-methylpentyl, 1 -methylpentyl, 2-ethylbutyl, 1 -ethylbutyl, 3,3-dimethylbutyl, 2,2-dimethylbutyl, 1 ,
• said group has 1 , 2, 3 or 4 carbon atoms ("G-C4-alkyl”), e.g. a methyl, ethyl, propyl, butyl, iso-propyl, iso-butyl, sec-butyl, tert-butyl group, more particularly 1 , 2 or 3 carbon atoms (“G-C3-alkyl”), e.g. a methyl, ethyl, n-propyl- or iso-propyl group.
• G-C4-alkyl e.g. a methyl, ethyl, propyl, butyl, iso-propyl, iso-butyl, sec-butyl, tert-butyl group, more particularly 1 , 2 or 3 carbon atoms
• G-C3-alkyl e.g. a methyl, ethyl, n-propyl- or iso-propyl group.
• halo-Ci-C6-alkyl is to be understood as preferably meaning a linear or branched, saturated, monovalent hydrocarbon group in which the term "G- C6-alkyl” is defined supra, and in which one or more hydrogen atoms is replaced by a halogen atom, in identically or differently, i.e. one halogen atom being independent from another. Particularly, said halogen atom is F.
• Said halo-Ci-C6-alkyl group is, for example, -CF 3 , -CHF 2 , -CH 2 F, -CF 2 CF 3 , or CH 2 CF 3 .
• G-C6-alkoxy is to be understood as preferably meaning a linear or branched, saturated, monovalent, hydrocarbon group of formula -0-(G-C6- alkyl), in which the term "Ci-C6-alkyl” is defined supra, e.g. a methoxy, ethoxy, n-propoxy, iso-propoxy, n-butoxy, iso-butoxy, tert-butoxy, sec-butoxy, pentoxy, iso-pentoxy, or n-hexoxy group, or an isomer thereof.
• halo-G-C6-alkoxy is to be understood as preferably meaning a linear or branched, saturated, monovalent G-C6-alkoxy group, as defined supra, in which one or more of the hydrogen atoms is replaced, in identically or differently, by a halogen atom.
• said halogen atom is F.
• Said halo-Ci-C6-alkoxy group is, for example, -OCF 3 , -OCHF 2 , -OCH 2 F, -OCF 2 CF 3 , or - OCH 2 CF 3 .
• Ci-C6-alkoxy-Ci-C6-alkyl is to be understood as preferably meaning a Ci-C6-alkyl group, as defined supra, in which one or more of the hydrogen atoms is replaced, in identically or differently, by a G-C6-alkoxy group, as defined supra, e.g.
• halo-Ci-C6-alkoxy-Ci-C6-alkyl is to be understood as preferably meaning a linear or branched, saturated, monovalent G-C6-alkoxy-G-C6-alkyl group, as defined supra, in which one or more of the hydrogen atoms is replaced, in identically or differently, by a halogen atom.
• said halogen atom is F.
• Said halo-Ci-C6-alkoxy-G-C6-alkyl group is, for example, CH2CH2OCF3, -CH2CH2OCHF2, -CH2CH2OCH2F, -CH2CH2OCF2CF3, or
• C2-C6-alkenyl is to be understood as preferably meaning a linear or branched, monovalent hydrocarbon group, which contains one or more double bonds, and which has 2, 3, 4, 5 or 6 carbon atoms, particularly 2 or 3 carbon atoms (“C2-C3-alkenyl”), it being understood that in the case in which said alkenyl group contains more than one double bond, then said double bonds may be isolated from, or conjugated with, each other.
• Said alkenyl group is, for example, a vinyl, allyl, (E)-2-methylvinyl, (Z)-2-methylvinyl, homoallyl, (E)- but-2-enyl, (Z)-but-2-enyl, (E)-but- l -enyl, (Z)-but- l -enyl, pent-4-enyl, (E)- pent-3-enyl, (Z)-pent-3-enyl, (E)-pent-2-enyl, (Z)-pent-2-enyl, (E)-pent- l -enyl, (Z)-pent- l -enyl, hex-5-enyl, (E)-hex-4-enyl, (Z)-hex-4-enyl, (E)-hex-3-enyl, (Z)- hex-3-enyl, (E)-hex-2-enyl, (Z)-
• C 2 -C6-alkynyl is to be understood as preferably meaning a linear or branched, monovalent hydrocarbon group which contains one or more triple bonds, and which contains 2, 3, 4, 5 or 6 carbon atoms, particularly 2 or 3 carbon atoms ("C 2 -C3-alkynyl").
• Said C 2 -C6-alkynyl group is, for example, ethynyl, prop-1-ynyl, prop-2-ynyl, but-1-ynyl, but-2-ynyl, but-3-ynyl, pent-1- ynyl, pent-2-ynyl, pent-3-ynyl, pent-4-ynyl, hex-1-ynyl, hex-2-inyl, hex-3-inyl, hex-4-ynyl, hex-5-ynyl, 1-methylprop-2-ynyl, 2-methylbut-3-ynyl, 1-methylbut- 3-ynyl, 1-methylbut-2-ynyl, 3-methylbut-1-ynyl, 1-ethylprop-2-ynyl, 3- methylpent-4-ynyl, 2-methylpent-4-ynyl, 1-methylpent-4-ynyl, 2-methylpent
• said alkynyl group is ethynyl, prop-1-ynyl, or prop-2-inyl.
• C 3 -C6-cycloalkyl is to be understood as preferably meaning a saturated, monovalent, mono-, or bicyclic hydrocarbon ring which contains 3, 4, 5 or 6 carbon atoms ("C 3 -C6-cycloalkyl").
• Said C 3 -C6-cycloalkyl group is for example, a monocyclic hydrocarbon ring, e.g. a cyclopropyl, cyclobutyl, cyclopentyl, or cyclohexyl or a bicyclic hydrocarbon ring.
• Said cycloalkyl ring can optionally contain one or more double bonds e.g. cycloalkenyl, such as a cyclopropenyl, cyclobutenyl, cyclopentenyl or cyclohexenyl group, wherein the bond between said ring with the rest of the molecule may be to any carbon atom of said ring, be it saturated or unsaturated.
• cycloalkenyl such as a cyclopropenyl, cyclobutenyl, cyclopentenyl or cyclohexenyl group
• heterocyclic ring as used in the term “4-, 5-, 6-, 7-, 8-, 9- or 10- membered heterocyclic ring”, or “4- to 6-membered heterocyclic ring” or “5- to 6-membered heterocyclic ring”, for example, as used in the definition of compounds of general formula ( I ) as defined herein, is to be understood as meaning a saturated or partially unsaturated, mono-, bi- or poly-cyclic nitrogen atom -containing ring, said nitrogen atom being the poi nt of attachment of said heterocyclic ring with the rest of the molecule.
• said nitrogen atom- containing ring can be a 4-membered ring, such as an azetidinyl ring, for example, or a 5-membered ring, such as a pyrrolidinyl ring, for example, or a 6-mem bered ri ng , such as a pi peridi nyl , pi perazi nyl , morph oli nyl , or thiomorpholinyl ring, for example, or a 7-membered ring, such as a diazepanyl ring ring, for example, or an 8-, 9-, or 10-mem bered ri ng , such as a cycloheptylaminyl, cyclooctylaminyl, or cyclononylaminyl ring, respectively, for example ; it being reiterated that any of the above-mentioned nitrogen atom-containing rings can further
• said nitrogen atom-containing ring can be bicyclic, such as, without being limited thereto, a 5,5-membered ring, e.g. a hexahydrocyclopenta[c]pyrrol-2(1 H)-yl) ring, or a 5,6-membered bicyclic ring, e.g. a hexahydropyrrolo[1 ,2-a]pyrazin-2(1 H)-yl ri ng , or for exam ple .
• said nitrogen atom-containing ring can be partially unsaturated, i.e.
• it can contain one or more double bonds, such as, without being limited thereto, a 2,5-dihydro-1 H-pyrrolyl, 4H-[1 ,3,4]thiadiazinyl, 4,5- dihydrooxazolyl, or 4H-[1 ,4]thiazinyl ring, for example, or, it may be benzo- fused, such as, without being limited thereto, a dihydroisoquinolinyl ring, for example.
• Said heterocycloalkyl ring is for example, a monocyclic heterocycloalkyl ring such as an oxyranyl, oxetanyl, aziridinyl, azetidinyl, tetrahydrofuranyl, pyrrolidinyl, imidazolidinyl, pyrazolidinyl, pyrrolinyl, tetrahydropyranyl, piperidinyl, morpholinyl, dithianyl, thiomorpholinyl, piperazinyl, trithianyl, or chinuclidinyl group.
• said heterocycloalkyl ring can contain one or more double bonds, e.g.
• 4H-pyranyl 2H-pyranyl, 3H- diazirinyl, 2,5-dihydro-1 H-pyrrolyl, [1 ,3]dioxolyl, 4H-[1 ,3,4]thiadiazinyl, 2,5- dihydrofuranyl, 2,3-dihydrofuranyl, 2,5-dihydrothiophenyl, 2,3- dihydrothiophenyl, 4,5-dihydrooxazolyl, or 4H-[1 ,4]thiazinyl group, or, it may be benzo fused.
• aryl is to be understood as preferably meaning a monovalent, aromatic or partially aromatic, mono-, or bi- or tricyclic hydrocarbon ring having 6, 7, 8, 9, 10, 1 1 , 12, 13 or 14 carbon atoms (a "C6-Ci4-aryl” group), particularly a ring having 6 carbon atoms (a "C6-aryl” group), e.g. a phenyl group, or a biphenyl group, or a ring having 9 carbon atoms (a "Cg-aryl” group), e.g. an indanyl or indenyl group, or a ring having 10 carbon atoms (a "Go-aryl” group), e.g. a tetralinyl, dihydronaphthyl, or naphthyl group, or a ring having
• heteroaryl is understood as preferably meaning a monovalent, aromatic, mono- or bicyclic aromatic ring system having 5, 6, 7, 8, 9, 10, 1 1 , 12, 13 or 14 ring atoms (a "5- to 14-membered heteroaryl” group), particularly 5 or 6 or 9 or 10 atoms, and which contains at least one heteroatom which may be identical or different, said heteroatom being such as oxygen, nitrogen or sulfur, and can be monocyclic, bicyclic, or tricyclic, and in addition in each case can be benzocondensed.
• heteroaryl is selected from thienyl, furanyl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, pyrazolyl, isoxazolyl, isothiazolyl, oxadiazolyl, triazolyl, thiadiazolyl, thia-4H-pyrazolyl etc. , and benzo derivatives thereof, such as, for example, benzofuranyl, benzothienyl, benzoxazolyl, benzisoxazolyl, benzimidazolyl, benzotriazolyl, indazolyl, indolyl, isoindolyl, etc.
• heteroaryl is selected from pyridyl, benzofuranyl, benzisoxazolyl, indazolyl, quinazolinyl, thienyl, quinolinyl, benzothienyl, pyrazolyl, or furanyl.
• alkylene is understood as preferably meaning an optionally substituted hydrocarbon chain (or “tether”) having 1 , 2, 3, 4, 5, or 6 carbon atoms, i.e. an optionally substituted -CH 2 - ("methylene” or “single membered tether” or, for example -C(Me) 2 -), -CH 2 -CH 2 - ("ethylene”, “dimethylene”, or “two-membered tether"), -CH 2 -CH 2 -CH 2 - ("propylene”, “trimethylene”, or “three-membered tether"), -CH 2 -CH 2 -CH 2 -CH 2 - ("butylene”, “tetramethylene”, or “four-membered tether"), -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 - ("pentylene”, “pentamethylene” or "five-membered ether”), or -CH 2 -CH 2 -CH 2 -CH
• G -C6 as used throughout this text, e.g. in the context of the definition of "Ci -C 6 -alkyl", “Ci -C 6 -haloalkyl", “G -C 6 -alkoxy”, or “G -C 6 - haloalkoxy” is to be understood as meaning an alkyl group having a finite number of carbon atoms of 1 to 6, i.e. 1 , 2, 3, 4, 5, or 6 carbon atoms. It is to be understood further that said term “G -C6” is to be interpreted as any subrange comprised therein, e.g.
• G -C6 C 2 -Cs , C3-C4 , Ci -C 2 , C1 -C3 , C1 -C4 , C1 -C5 , G - C& ; particularly Ci -C 2 , Ci -C3 , G -C4 , C1 -C5 , G -C6 ; more particularly C1 -C4 ; in the case of "G -C6-haloalkyl" or "G -C6-haloalkoxy" even more particularly G -C 2 .
• C 2 -C6 as used throughout this text, e.g.
• C 2 -C6-alkenyl and "C 2 -C6-alkynyl”
• C 2 -C6-alkynyl is to be understood as meaning an alkenyl group or an alkynyl group having a finite number of carbon atoms of 2 to 6, i.e. 2, 3, 4, 5, or 6 carbon atoms.
• said term "C 2 -C6” is to be interpreted as any sub- range comprised therein, e.g. i- b, C3-C5, C3-C4, C2-C3, C2-C4, C2-C5; particularly C 2 - C 3 .
• C3-C6 as used throughout this text, e.g. in the context of the definition of "C3-C6-cycloalkyl”, is to be understood as meaning a cycloalkyl group having a finite number of carbon atoms of 3 to 6, i.e. 3, 4, 5 or 6 carbon atoms. It is to be understood further that said term “C3- C6” is to be interpreted as any sub-range comprised therein, e.g. C3-C6, C4-C5 , C3-C5, C3-C4, C4-C&, C5-C&; particularly C3-C6.
• a leaving group refers to an atom or a group of atoms that is displaced in a chemical reaction as stable species taking with it the bonding electrons.
• a leaving group is selected from the group comprising: halo, in particular chloro, bromo or iodo, methanesulfonyloxy, p-toluenesulfonyloxy, trif luoromethanesu lfonyloxy, nonafluorobutanesulfonyloxy, (4-bromo-benzene)sulfonyloxy, (4-nitro- benzene)sulfonyloxy, (2-nitro-benzene)-sulfonyloxy, (4-isopropyl- benzene)sulfonyloxy, (2,4,6-tri-isopropyl-benzene)-sulfonyloxy, (2,4,6-trimethyl-benzene)
• the term "one or more times”, e.g. in the definition of the substituents of the compounds of the general formulae of the present invention, is understood as meaning “one, two, three, four or five times, particularly one, two, three or four times, more particularly one, two or three times, even more particularly one or two times".
• the compounds of this invention may contain one or more asymmetric centre, depending upon the location and nature of the various substituents desired.
• Asymmetric carbon atoms may be present in the (R) or (S) configuration, resulting in racemic mixtures in the case of a single asymmetric centre, and diastereomeric mixtures in the case of multiple asymmetric centres.
• asymmetry may also be present due to restricted rotation about a given bond, for example, the central bond adjoining two substituted aromatic rings of the specified compounds.
• Substituents on a ring may also be present in either cis or trans form. It is intended that all such configurations (including enantiomers and diastereomers), are included within the scope of the present invention.
• Preferred compounds are those which produce the more desirable biological activity.
• Separated, pure or partially purified isomers and stereoisomers or racemic or diastereomeric mixtures of the compounds of this invention are also included within the scope of the present invention.
• the purification and the separation of such materials can be accomplished by standard techniques known in the art.
• the optical isomers can be obtained by resolution of the racemic mixtures according to conventional processes, for exam ple, by the formation of diastereoisomeric salts using an optically active acid or base or formation of cova len t diastereomers .
• Mixtures of diastereoisomers can be separated into their individual diastereomers on the basis of their physical and/or chemical differences by methods known in the art, for example, by chromatography or fractional crystallisation .
• optically active bases or acids are then liberated from the separated diastereomeric salts.
• a different process for separation of optical isomers involves the use of chiral chromatography (e.g. , chiral HPLC columns), with or without conventional derivatisation, optimally chosen to maximise th e sepa ration of the enantiom ers .
• Enzymatic separations, with or without derivatisation are also useful.
• the optically active compounds of this invention can likewise be obtained by chiral syntheses utilizing optically active starting materials.
• the invention also includes all suitable isotopic variations of a compound of the invention.
• An isotopic variation of a compound of the invention is defined as one in which at least one atom is replaced by an atom having the same atomic number but an atomic mass different from the atomic mass usually or predominantly found in nature.
• isotopes that can be incorporated into a compound of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, sulphur, fluorine, chlorine, bromine and iodine, such as 2 H (deuterium), 3 H (tritium), 13 C, 14 C, 15 N, 17 0, 18 0, 32 P, 33 P, 33 S, 34 S, 35 S, 36 S, 18 F, 36 Cl, 82 Br, 123 l, 124 l, 129 l and 131 l, respectively.
• Certain isotopic variations of a compound of the invention for example, those in which one or more radioactive isotopes such as 3 H or 14 C are incorporated, are useful in drug and/or substrate tissue distribution studies.
• Tritiated and carbon-14, i.e., 14 C, isotopes are particularly preferred for their ease of preparation and detectability. Further, substitution with isotopes such as deuterium may afford certain therapeutic advantages resulting from greater metabolic stability, for example, increased in vivo half-life or reduced dosage requirements and hence may be preferred in some circumstances.
• isotopic variations of a compound of the invention can generally be prepared by conventional procedures known by a person skilled in the art such as by the illustrative methods or by the preparations described in the examples hereafter using appropriate isotopic variations of suitable reagents.
• the present invention includes all possible stereoisomers of the compounds of the present invention as single stereoisomers, or as any mixture of said stereoisomers, in any ratio.
• Isolation of a single stereoisomer, e.g. a single enantiomer or a single diastereomer, of a compound of the present invention may be achieved by any suitable state of the art method , such as chromatography, especially chiral chromatography, for example.
• the compounds of the present invention may exist as tautomers.
• any compound of the present invention which contains a pyrazole moiety as a heteroaryl group for example can exist as a 1 H tautomer, or a 2H tautomer, or even a mixture in any amount of the two tautomers, or a triazole moiety for example can exist as a 1 H tautomer, a 2H tautomer, or a 4H tautomer, or even a mixture in any amount of said 1 H, 2H and 4H tautomers, viz. :
• the present invention includes all possible tautomers of the compounds of the present invention as single tautomers, or as any mixture of said tautomers, in any ratio.
• the compounds of the present invention can exist as N-oxides, which are defined in that at least one nitrogen of the compounds of the present invention is oxidised.
• the present invention includes all such possible N-oxides.
• the present invention also relates to useful forms of the compounds as disclosed herein, such as metabolites, hydrates, solvates, prodrugs, salts, in particular pharmaceutically acceptable salts, and co-precipitates.
• the compounds of the present invention can exist as a hydrate, or as a solvate, wherein the compounds of the present invention contain polar solvents, in particular water, methanol or ethanol for example as structural element of the crystal lattice of the compounds.
• polar solvents in particular water, methanol or ethanol for example as structural element of the crystal lattice of the compounds.
• the amount of polar solvents, in particular water may exist in a stoichiometric or non-stoichiometric ratio.
• stoichiometric solvates e.g. a hydrate, hemi-, (semi-), mono-, sesqui-, di-, tri- , tetra-, penta- etc. solvates or hydrates, respectively, are possible.
• the present invention includes all such hydrates or solvates.
• the compounds of the present invention can exist in free form, e.g. as a free base, or as a free acid, or as a zwitterion, or can exist in the form of a salt.
• Said salt may be any salt, either an organic or inorganic addition salt, particularly any pharmaceutically acceptable organic or inorganic addition salt, customarily used in pharmacy.
• pharmaceutically acceptable salt refers to a relatively non-toxic, inorganic or organic acid addition salt of a compound of the present invention.
• pharmaceutically acceptable salt refers to a relatively non-toxic, inorganic or organic acid addition salt of a compound of the present invention.
• S. M. Berge, et al. “Pharmaceutical Salts, " J. Pharm. Sci. 1977, 66, 1 -19.
• a suitable pharmaceutically acceptable salt of the compounds of the present invention may be, for example, an acid-addition salt of a compound of the present invention bearing a nitrogen atom, in a chain or in a ring, for example, which is sufficiently basic, such as an acid-addition salt with an inorganic acid, such as hydrochloric, hydrobromic, hydroiodic, sulfuric, bisulfuric, phosphoric, or nitric acid, for example, or with an organic acid, such as formic, acetic, acetoacetic, pyruvic, trifluoroacetic, propionic, butyric, hexanoic, heptanoic, undecanoic, lauric, benzoic, salicylic, 2-(4-hydroxybenzoyl)-benzoic, camphoric, cinnamic, cyclopentanepropionic, digluconic, 3-hydroxy-2- naphthoic, nicotinic, pamoic, pectinic, per
• an alkali metal salt for example a sodium or potassium salt
• an alkaline earth metal salt for example a calcium or magnesium salt
• an ammonium salt or a salt with an organic base which affords a physiologically acceptable cation, for example a salt with N- methyl-glucamine, dimethyl-glucamine, ethyl-glucamine, lysine, dicyclohexylamine, 1 ,6-hexadiamine, ethanolamine, glucosamine, sarcosine, serinol, tris-hydroxy-methyl-aminomethane, aminopropandiol, sovak-base, 1 - amino-2,3,4-butantriol.
• basic nitrogen containing groups may be quaternised with such agents as lower alkyl halides such as methyl, ethyl, propyl, and butyl chlorides, bromides and iodides ; dialkyl sulfates like dimethyl, diethyl, and dibutyl sulfate ; and diamyl sulfates, long chain halides such as decyl, lauryl, myristyl and strearyl chlorides, bromides and iodides, aralkyl halides like benzyl and phenethyl bromides and others.
• lower alkyl halides such as methyl, ethyl, propyl, and butyl chlorides, bromides and iodides
• dialkyl sulfates like dimethyl, diethyl, and dibutyl sulfate
• diamyl sulfates long chain halides such as decyl, la
• acid addition salts of the claimed compounds may be prepared by reaction of the compounds with the appropriate inorganic or organic acid via any of a number of known methods.
• alkali and alkaline earth metal salts of acidic compounds of the invention are prepared by reacting the compounds of the invention with the appropriate base via a variety of known methods.
• the present invention includes all possible salts of the compounds of the present invention as single salts, or as any mixture of said salts, in any ratio.
• in vivo hydrolysable ester is understood as meaning an in vivo hydrolysable ester of a compound of the present invention containing a carboxy or hydroxy group, for example, a pharmaceutically acceptable ester which is hydrolysed in the human or animal body to produce the parent acid or alcohol.
• suitable pharmaceutically acceptable esters for carboxy include for example alkyl, cycloalkyl and optionally substituted phenylalkyl, in particular benzyl esters, Ci-C& alkoxymethyl esters, e.g. methoxymethyl, Ci-C& alkanoyloxymethyl esters, e.g.
• An in vivo hydrolysable ester of a compound of the present invention containing a hydroxy group includes inorganic esters such as phosphate esters and [alpha] -acyloxyalkyl ethers and related compounds which as a result of the in vivo hydrolysis of the ester breakdown to give the parent hydroxy group.
• inorganic esters such as phosphate esters and [alpha] -acyloxyalkyl ethers and related compounds which as a result of the in vivo hydrolysis of the ester breakdown to give the parent hydroxy group.
• [alpha] -acyloxyalkyl ethers include acetoxymethoxy and 2,2- dimethylpropionyloxymethoxy.
• a selection of in vivo hydrolysable ester forming groups for hydroxy include alkanoyl, benzoyl, phenylacetyl and substituted benzoyl and phenylacetyl, alkoxycarbonyl (to give alkyl carbonate esters), dialkylcarbamoyl and N-(dialkylaminoethyl)-N-alkylcarbamoyl (to give carbamates), dialkylaminoacetyl and carboxyacetyl.
• the present invention covers all such esters.
• the present invention includes all possible crystalline forms, or polymorphs, of the compounds of the present invention, either as single polymorphs, or as a mixture of more than one polymorphs, in any ratio.
• the present invention covers compounds of general formula (I):
• Oj represents a group selected from: N, CH, C-(G-C6-alkyl),
• Q 2 represents a group selected from: N, CH, CR b ;
• Q 3 represents a group selected from: N, CH, CR b ;
• R a represents a group selected from:
• halo-Ci-C6-alkoxy- hydroxy-Ci-C6-alkyl-, Ci-C6-alkoxy-Ci-C6-alkyl-, halo-Ci-C 6 -alkoxy-Ci-C 6 -alkyl-, R 8 -(Ci-C 6 -alkoxy)-, R 8 -0-, -NR 8 R 7 ,
• R b represents a group selected from:
• R 8 (CH 2 ) n (CHOH)(CH 2 )p-0-, R 8 -(Ci-C 6 -alkoxy-Ci-C 6 -alkyl)-,
• halo-Ci-C4-alkoxy- hydroxy-Ci-C4-alkyl-, Ci-C4-alkoxy-Ci-C4-alkyl-, halo-Ci-C4-alkoxy-Ci-C4-alkyl-, C 2 -C&-alkenyl-, C 2 -C&-alkynyl-,
• R 8 (CH 2 ) n (CHOH)(CH 2 )p-0-, R 8 -(Ci-C 6 -alkoxy-Ci-C 6 -alkyl)-,
• R 7 represents a hydrogen atom, a G -C6-alkyl- or a C3-C6-cycloalkyl- group
• R 8 represents a hydrogen atom or a G -C6-alkyl- or C3-C6-cycloalkyl- group, wherein said G -C6-alkyl- or C3-C6-cycloalkyl- group is optionally substituted, one or more times, identically or differently, with a substituent selected from:
• R 1 is a substituted phenyl or pyridyl group.
• R 1 is a substituted phenyl group.
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group - which is substituted, one or more times, identically or differently, with a substituent selected from:
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• Ci-C6-alkyl- halo-, Ci-C6-alkyl-, G-C6-alkoxy-.
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group which is para-substituted with respect to the point of attachement of the phenyl group with the rest of the molecule, as depicted in formula (I), with a substituent selected from:
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group which is para-substituted with respect to the point of attachement of the phenyl group with the rest of the molecule, as depicted in formula (I), with a substituent selected from:
• the invention relates to compounds of formula (I), wherein : R 1 represents a phenyl group which is para-substituted with respect to the point of attachement of the phenyl group with the rest of the molecule, as depicted in formula (I), with a substituent selected from:
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group which is para-substituted with respect to the point of attachement of the phenyl group with the rest of the molecule, as depicted in formula (I), with a substituent selected from:
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a group selected from:
• the invention relates to compounds of formula (I), wherein :
• Q 1 represents a group selected from: CH, C-(Ci-C 6 -alkyl), C-(Ci-C&-alkoxy), C-halo.
• Q 1 represents CH.
• the invention relates to compounds formula (I), wherein :
• Q 2 represents a group selected from: N, CH, C-R c ;
• R c is selected from the groups consisting of:
• Q 2 represents CH.
• the invention relates to compounds of formula (I), wherein :
• Q 3 represents a group selected from: N, CH, C-R c ,
• R c is selected from the groups consisting of:
• Q 3 represents CH or N.
• the invention relates to compounds of formula (I), wherein :
• Q 1 and Q 2 represent CH, and Q 3 represents CH or N.
• the invention relates to compounds of formula (I), wherein :
• R 3 represents a hydrogen atom, halo-, hydroxy-, G-Ct-alkyl-,
• R 3 represents a hydrogen atom.
• the invention relates to compounds formula (I), wherein :
• R 4 represents a hydrogen atom, halo-, a Ci-C&-alkyl-, halo-G-C6-alkyl- Ci-C&-alkoxy- group.
• R 4 represents a hydrogen atom.
• the invention relates to compounds of formula (I), wherein :
• R 3 and R 4 represent a hydrogen atom.
• the invention relates to compounds of formula (I), wherein :
• R a represents a group selected from:
• R 8 -S( 0) 2 -, (C 3 -C 6 -cycloalkyl)-(CH 2 ) n -0-.
• R a is selected from:
• R a is selected from:
• cyclopropyl-O- cyclopropyl-CH 2 -0-, CH 3 -0-CH 2 CH 2 -0-, CHF 2 -0-, CF 3 -0-,
• the invention relates to compounds of formula (I), wherein :
• R a represents a G-C6-alkoxy-, group.
• the invention relates to compounds of formula (I), wherein :
• R a represents a G-C 3 -alkoxy-, group.
• the invention relates to compounds of formula (I), wherein :
• R a represents a halo-G-C6-alkoxy-, group.
• the invention relates to compounds of formula (I), wherein :
• R a represents a halo-G-C3-alkoxy-, group.
• the invention relates to compounds of formula (I), wherein :
• R a represents a (C3-C6-cycloalkyl)-(CH 2 )n-0- group.
• the invention relates to compounds of formula (I), wherein :
• R b represents a group selected from:
• R b is selected from:
• R b is selected from:
• R b represents a group selected from:
• the invention relates to compounds of formula (I), wherein :
• the invention relates to compounds of formula (I), wherein :
• the invention relates to compounds of formula (I), wherein :
• the invention relates to compounds of formula (I), wherein :
• the invention relates to compounds of formula (I), wherein :
• the invention relates to compounds of formula (I), wherein :
• the invention relates to compounds of formula (I), wherein :
• the invention relates to compounds of formula (I), wherein :
• R 6 represents a group selected from:
• C3-C6-cycloalkyl- 3- to 10-membered heterocyclyl-, aryl-, heteroaryl-, -(CH 2 ) q -(C3-C6-cycloalkyl), -(CH 2 ) q -(3- to 10-membered heterocyclyl), -(CH 2 ) q -aryl, or -(CH 2 ) q -heteroaryl;
• the invention relates to compounds of formula (I), wherein :
• R 6 represents a group selected from:
• the C3-C6-cycloalkyl- group preferably is a cyclopropyl- group; the aryl- group is preferably a phenyl- group; the heteroaryl- group is preferably a pyridyl- group.
• the invention relates to compounds of formula (I), wherein :
• R 6 represents a group selected from:
• the C 3 -C6-cycloalkyl- group preferably is a cyclopropyl- group; the aryl- group is preferably a phenyl- group.
• the invention relates to compounds of formula (I), wherein :
• R 6 represents a group selected from:
• the C 3 -G-cycloalkyl- group preferably is a cyclopropyl- group; the aryl- group is preferably a phenyl- group.
• the invention relates to compounds of formula (I), wherein :
• R 6 represents a group selected from:
• the C3-C6-cycloalkyl- group preferably is a cyclopropyl- group; the aryl- group is preferably a phenyl- group.
• the invention relates to compounds of formula (I), wherein :
• R 6 represents a group selected from:
• the aryl- group is preferably a phenyl- group.
• the invention relates to compounds of formula (I), wherein :
• R 6 represents a group selected from:
• Ci-C6-alkyl- preferably is a cyclopropyl- group.
• the invention relates to compounds of formula (I), wherein :
• R 6 represents a group selected from:
• the invention relates to compounds of formula (I), wherein :
• R 7 represents a hydrogen atom, or a G-C6-alkyl-.
• the invention relates to compounds of formula (I), wherein :
• R 7 represents a hydrogen atom, or a C3-C6-cycloalkyl- group
• the invention relates to compounds of formula (I), wherein :
• R 8 represents a hydrogen atom or a G-C6-alkyl- group
• G-C6-alkyl-group is optionally substituted, one or more times, identically or differently, with a substituent selected from:
• the invention relates to compounds of formula (I), wherein :
• R 8 represents a hydrogen atom or C 3 -C6-cycloalkyl- group
• the invention relates to compounds of formula (I), wherein :
• R 8 represents a hydrogen atom or a G-C6-alkyl- group
• G-C6-alkyl-group is optionally substituted, one or more times, identically or differently, with a substituent selected from:
• the invention relates to compounds of formula (I), wherein :
• R 8 represents a hydrogen atom or C3-C6-cycloalkyl- group
• the invention relates to compounds of formula (I), wherein :
• R 8 represents a hydrogen atom or a G-C6-alkyl- group
• G-C6-alkyl-group is optionally substituted, one or more times, identically or differently, with a substituent selected from:
• the invention relates to compounds of formula (I), wherein :
• n an integer of 0, 1 or 2.
• n 0 or 1.
• the invention relates to compounds of formula (I), wherein :
• q represents an integer of 0, 1 or 2.
• q 1 or 2.
• the invention relates to compounds of formula (I):
• R a represents a group selected from:
• R b represents a group selected from:
• Q 1 represents a group selected from: CH, C-(G-C6-alkyl),
• Q 2 represents a group selected from: N, CH, C-R c ;
• R c is selected from the groups consisting of:
• Q 3 represents a group selected from: N, CH, C-R c ,
• R c is selected from the groups consisting of:
• C3-C&-cycloalkyl- 3- to 10-membered heterocyclyl-, aryl-, heteroaryl-, -(CH 2 ) q -(C3-C6-cycloalkyl), -(CH 2 ) q -(3- to 10-membered heterocyclyl), -(CH 2 )q-aryl, or -(CH 2 ) q -heteroaryl;
• n represents an integer of 0, 1 or 2;
• q represents an integer of 0, 1 or 2.
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• R a represents a group selected from:
• R b represents a group selected from:
• R 3 , R 4 , and R 5 represent a hydrogen atom
• R 6 represents a group selected from:
• R 7 represents a hydrogen atom, a G -C6-alkyl- or a C 3 -C6-cycloalkyl- group
• R 8 represents a hydrogen atom or a G -C6-alkyl- or C 3 -C6-cycloalkyl- group, wherein said G -C6-alkyl- or C 3 -C6-cycloalkyl- group is optionally substituted, one or more times, identically or differently, with a substituent selected from:
• n represents an integer of 0, 1 or 2;
• q represents an integer of 1 or 2.
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• Q 3 represents CH or N
• R a represents a group selected from:
• R b represents a group selected from:
• R 4 and R 5 represent a hydrogen atom
• the invention relates to compounds of formula (I), wherein :
• R 1 represents a phenyl group
• Q 3 represents CH or N
• R a represents a group selected from:
• R b represents a group selected from:
• R 3 , R 4 and R 5 represent a hydrogen atom
• R 6 represents a group selected from:
• R 7 represents a hydrogen atom, a G -C6-alkyl- or a C3-C6-cycloalkyl- group
• the present invention covers compounds of general formula (I) which are disclosed in the Example section of this text, infra.
• the present invention covers methods of preparing compounds of the present invention, said methods comprising the steps as described in the Experimental Section herein.
• the present invention relates to a method of preparing compounds of general formula (I) of the present invention, in which method an intermediate com ound of general formula (5) :
• R 1 , R 3 , R 4 , and R 5 are as defined for the compounds of general formula (I), supra,
• the present invention relates to a method of preparing compounds of general formula (I), supra, in which method an intermediate compound of general formula (7) :
• R 2 , R 3 , R 4 , and R 5 are as defined for the compounds of general formula (I), supra, and R 1a is an aryl group to which an -NH 2 substituent is bound, is allowed to react with a compound of general formula :
• the present invention covers intermediate compounds which are useful in the preparation of compounds of the present invention of general formula (I), particularly in the method described herein.
• the present invention covers : a) compounds of general formula 5) :
• R 2 , R 3 , R 4 , and R 5 are as defined for the compound of general formula (I), supra, and R 1a is an aryl group to which an -NH 2 substituent is bound.
• R 1a is an aryl group to which an -NH 2 substituent is bound.
• R 1 , R 3 , R 4 , and R 5 are as defined for the compound of general formula
• Pd-tBu-X- chloro(2-di-tert-butylphosphino-2',4',6'-tri-i-propyl-1 , 1 '- Phos-pre-cat biphenyl)[2-(2-aminoethyl)phenyl] palladium(ll), chloro(2-dicyclohexylphosphino-2',4',6'-tri-i-propyl-1 , 1 '-
• a first reaction scheme is outlined infra :
• R 1 , R 2 , R 3 , R 4 and R 5 are as defined for the compounds of formula (I), supra
• Y is a halogen atom as defined supra
• Z represents a suitable functional group via which the R 1 of the R 1 -Z compound can be coupled, by a coupling reaction, onto the Y-bearing carbon atom of a compound (4), thereby replacing said Y with said R 1 moiety.
• Many aryl halides of the formula R 2 -Y may be obtained commercially.
• Reagents of the general structure R 1a -Z and R 1 -Z can for example be aryl boronic acids or aryl boronic esters.
• R 1a -Z and R 1 -Z are also commercially available.
• Reagents of the general structures R 1a -Z and R 1 -Z can be prepared from aryl halides [see for example K. L. Billingslay, T. E. Barde, S. L Buchwald, Angew. Chem. 2007, 1 19, 5455 or T.Graening, sympatheticen aus der Chemie, Jan 2009, 57, 34].
• R 1a can be converted to R 1 in one or several steps.
• R 1a can be a protected aryl-amine, especially -aryl-NH-Boc, or an aryl-carboxylic acid, [-aryl-C(0)OH] or an -aryl-carboxylic acid ester [ aryl-C(0)0-alkyl] .
• a suitably substituted 5-halo-pyridin-2-ylamine intermediate of general formula (1 ) is converted to the corresponding intermediate of general formula (2) by reaction with a suitable oxycarbonylisothiocyanat, such as for example ethoxycarbonylisothiocyanat at temperatures ranging from room temperature to the boi ling point of the solvent, preferably room temperature [see for example M. Nettekoven, B. Pullmann, S. Schmitt, Synthesis 2003, 1643 - 1652] .
• a suitable oxycarbonylisothiocyanat such as for example ethoxycarbonylisothiocyanat
• Intermediates of general formula (2) may be converted to 6-Halo- [1 ,2,4]triazolo[1 ,5-a]pyridin-2-ylamine intermediates of general formula (3) by reaction with a suitable reagent, for example hydroxylamine hydrochloride, in presence of a suitable base, such as, for example DIPEA in a suitable solvent system, such as, for example, methanol, ethanol, 1 -propanol, 2-propanol or mixtures of these solvents at elevated temperatures, e.g. 60° C. [see for example M. Nettekoven, B. Pullmann, S. Schmitt, Synthesis 2003, 1643 - 1652].
• a suitable reagent for example hydroxylamine hydrochloride
• a suitable base such as, for example DIPEA
• a suitable solvent system such as, for example, methanol, ethanol, 1 -propanol, 2-propanol or mixtures of these solvents at elevated temperatures, e.g. 60°
• Intermediates of general formula (4) can be converted to compounds of general formula (I) by reaction with a suitable reagent, like for example a boronic acid derivative in the presence of a suitable catalyst system, like for example Pd(OAc) 2 and P(oTol) 3 , or PdCl 2 (PPh 3 ) 2 and PPh 3 and a suitable base, like for example aqueous potassium carbonate in a suitable solvent, like for example THF, DME, ethanol or 1 - propanol or mixtures of these solvents at temperatures ranging from room temperature to 200° C, prefereably the boiling point of the used solvent.
• a suitable reagent like for example a boronic acid derivative in the presence of a suitable catalyst system, like for example Pd(OAc) 2 and P(oTol) 3 , or PdCl 2 (PPh 3 ) 2 and PPh 3 and a suitable base, like for example aqueous potassium carbonate in a suitable solvent, like for example THF, DME,
• Intermediates of general formula (3) can be reacted reacted with a suitable reagent, like for example a boronic acid derivative in the presence of a suitable catalyst system, like for example Pd(OAc) 2 and P(oTol) 3 , or PdCl 2 (PPh 3 ) 2 and PPh 3 and a suitable base, like for example aqueous potassium carbonate in a suitable solvent, like for example THF, DME, ethanol or 1 - propanol or mixtures of these solvents at temperatures ranging from room temperature to 200°C, prefereably the boiling point of the used solvent to furnish intermediates of the general formula (5).
• a suitable reagent like for example a boronic acid derivative in the presence of a suitable catalyst system, like for example Pd(OAc) 2 and P(oTol) 3 , or PdCl 2 (PPh 3 ) 2 and PPh 3 and a suitable base, like for example aqueous potassium carbonate in a suitable solvent, like for example THF
• Intermediates of general formula (5) can be converted to compounds of general formula (I) by reaction with with suitable aryl halides, of formula (5a) as defined herein, preferably aryl bromides, or aryl trifluoromethylsulphonates or aryl nonafluorobutylsulphonates, for example, optionally in the presence of a suitable base, such as, for example NaOtBu or cesium carbonate, and a suitable catalyst/ ligand system, such as for example Pd 2 (dba) 3 /rac-BINAP in a suitable solvent such as for example THF, toluene, DME, or NMP, or mixtures of these solvents at temperatures ranging from room temperature to the 200° C.
• suitable aryl halides of formula (5a) as defined herein, preferably aryl bromides, or aryl trifluoromethylsulphonates or aryl nonafluorobutylsulphonates, for example, optionally in the presence of a suitable
• Scheme 2 Synthesis of compounds of general formula (1 1 ), wherein R 2 , R 3 , R 4 , R 5 and R 6 are as defined for the compounds of general formula (I), supra.
• Y is a halogen as defined in the definitions.
• R xy is halogen, hydroxy or G-C6-alkyl.
• Scheme 3 Synthesis of compounds of general formula (12), wherein R 2 , R 3 , R 4 , R 5 and R 6 are as defined for the compounds of general formula (I), supra.
• R xy is halogen, hydroxy or G-C6-alkyl.
• a) conditions for the formation of a sulfonamide e.g. using a sulfonyl chloride and a base like DIPEA in an inert solvent like for example THF, DMF, DCM or NMP at temperatures ranging from room temperature to the 70° C.
• Scheme 5 Synthesis of compounds of general formula (15), wherein R 2 , R 3 , R 4 , and R 5 are as defined for the compounds of general formula (I), supra.
• R xy is halogen, hydroxy or G-C6-alkyl.
• R xz is a leaving group, e.g. a halogen.
• R Het is 3- to 10-membered heterocyclyl, as defined supra, a) Conditions for the formation of an amide bond, e.g. using coupling reagents like for example HATU or TBTU and a base like for example potassium carbonate or DIPEA in an inert solvent like for example THF, DMF, DCM or NMP.
• an acid chloride and a base like for example pyridine can be used in an inert solvent like for example THF or DCM.
• a heterocyclic amine like e.g. piperidine in a polar solvent like for example DMF or NMP using a base like for example potassium carbonate and optionally using a catalytic ammount of potassium iodide.
• Scheme 7 Synthesis of compounds of general formula (21 ), wherein R 2 , R 3 , R 4 , R 5 , R 6 and R 7 are as defined for the compounds of general formula (I), supra.
• R xy is halogen, hydroxy or G-C6-alkyl.
• R alkyl is G-C6-alkyl.
• the compounds and intermediates produced according to the methods of the invention may require purification. Purification of organic compounds is well known to the person skilled in the art and there may be several ways of purifying the same compound. In some cases, no purification may be necessary. In some cases, the compounds may be purified by crystallisation. In some cases, impurities may be stirred out using a suitable solvent. In some cases, the compounds may be purified by chromatography, particularly flash chromatography, using for example pre-packed silica gel cartridges, e.g.
• Separtis such as Isolute® Flash silica gel (silica gel chromatography) or Isolute® Flash NH2 silica gel (aminophase-silica-gel chromatography) in combination with a suitable chromatographic system such as a Flashmaster II (Separtis) or an Isolera system (Biotage) and eluents such as, for example, gradients of hexane/ethyl acetate or DCM/methanol.
• a suitable chromatographic system such as a Flashmaster II (Separtis) or an Isolera system (Biotage)
• eluents such as, for example, gradients of hexane/ethyl acetate or DCM/methanol.
• the compounds may be purified by preparative HPLC using, for example, a Waters autopurifier equipped with a diode array detector and/or on-line electrospray ionisation mass spectrometer in combination with a suitable pre-packed reverse phase column and eluants such as, for example, gradients of water and acetonitrile which may contain additives such as trifluoroacetic acid, formic acid or aqueous ammonia.
• eluants such as, for example, gradients of water and acetonitrile which may contain additives such as trifluoroacetic acid, formic acid or aqueous ammonia.
• Analytical UPLC-MS was performed as follows:
• Method A System: UPLC Acquity (Waters) with PDA Detector und Waters ZQ mass spectrometer; Column: Acquity BEH C18 1.7 ⁇ 2.1x50 mm; Temperature: 60 ° C; Solvent A: Water + 0.1 % formic acid; Solvent B : acetonitrile; Gradient: 99 % A - 1 % A (1.6 min) - 1 % A (0.4 min) ; Flow: 0.8 mL/min; Injection Volume: 1.0 ⁇ _ (0.1 mg-1 mg/ml_ sample concentration); Detection: PDA scan range 210-400 nm - Fixed and ESI (+),scan range 170-800 m/z
• Names of compounds were generated using ACD/Name Batch ver. 12.00 or ACD/Name Batch ver. 12.01 .
• Names of compounds in table format were generated using ACD/Name Batch ver. 12.00.
• Ethoxycarbonylisothiocyanat (16.7 g) was added to a stirred solution of 2- amino-5-brompyridine (20 g) in dioxane (200 mL). The mixture was stirred for 2h at r.t. A white solid precipitated. Hexane (20 mL) was added and the white solid was collected by filtration.
• Hydroxylammoniumchlorid 39.8 g was suspended in methanol (200 mL) and ethanol (190 mL) and Hunig Base (59 mL) was added at r.t. The mixture was heated to 60°C, Int 1.1 (30 g) was added portionwise, and the mixture was stirred at 60° C for 2h. The solvent was removed in vacuum and water (150 mL) was added. A solid was collected by filtration and was washed with water and dried in vacuum.
• intermediate example Int5.6 was prepared analogously to the procedure for the preparation of intermediate example Int5.5.
• intermediate example Int5.7 was prepared analogously to the procedure for the preparation of intermediate example Int5.5.
• intermediate example Int5.8 was prepared analogously to the procedure for the preparation of intermediate example Int5.5.
• N-ethyl-3-hydroxy-4-iodobenzamide (Int 14.1 ) ( 1 .00 g) was dissolved in DMF (7.1 mL) and acetonitrile (0.29 ml_), and potassium carbonate (950 mg) and 2,2,2-trifluoroethyl trifluoromethanesulfonate (837 mg) were added. The mixture was heated for 30 min in a microwave oven to 150 ° C. Subsequently, the reaction mixture was diluted with water and three times extracted with ethyl acetate. The combined organic layers were washed three times with aqueous ammonium chloride solution, then with satd. aqueous sodium bicarbonate solution and with brine. The organic layer was dried over sodium sulfate, and the solvent was evaporated to yield 1 .25 g (98%) of the title compound.
• N,N-Diethyl-3-hydroxy-4-iodobenzamide (Int 15.1 ) (1 .00 g) was dissolved in DMF (6.5 mL) and acetonitrile (0.26 mL), and potassium carbonate (866 mg) and 2,2,2-trifluoroethyl trifluoromethanesulfonate (764 mg) were added. The mixture was heated for 30 min in a microwave oven to 150 ° C. Subsequently, the reaction mixture was diluted with water and three times extracted with ethyl acetate. The combined organic layers were washed three times with aqueous ammonium chloride solution, then with satd. aqueous sodium bicarbonate solution and with brine.
• N,N-Diethyl-3-hydroxy-4-iodobenzamide (Int 15.1 ) (630 mg) was dissolved in DMF (4.2 mL) and acetonitrile (0.17 ml_), and potassium carbonate (546 mg) and 1 -iodopropane (352 mg) were added. The mixture was heated for 30 min in a microwave oven to 150 °C. Subsequently, the reaction mixture was diluted with water and three times extracted with ethyl acetate. The combined organic layers were washed three times with aqueous ammonium chloride solution, then with satd. aqueous sodium bicarbonate solution and with brine. It was dried over sodium sulfate, and the solvent was evaporated to yield 670 mg (94%) of the title compound as an oil.
• N,N-Diethyl-3-hydroxy-4-iodobenzamide (Int 15.1 ) (618 mg) was dissolved in DMF (2.7 mL) and acetonitrile (0.1 ml_), and potassium carbonate (535 mg) and 1 -(bromomethyl)cyclopropane (275 g) were added. The mixture was heated for 30 min in a microwave oven to 150 ° C. Subsequently, the reaction mixture was diluted with water and extracted th ree times with ethyl acetate. The combined organic layers were washed three times with aqueous ammonium chloride solution, then with satd. aqueous sodium bicarbonate solution and with brine. It was dried over sodium sulfate, and the solvent was evaporated to yield 498 mg (63%) of the title compound as an oil.
• N,N-Diethyl-3-hydroxy-4-iodobenzamide (400 mg) was dissolved in DMF (2.7 mL) and acetonitrile (0.10 mL), and potassium carbonate (346 mg) and 2-iodopropane (224 mg) were added. The mixture was heated for 30 min in a microwave oven to 150 ° C. Subsequently, the reaction mixture was diluted with water and three times extracted with ethyl acetate. The combined organic layers were washed three times with aqueous ammonium chloride solution, then with satd. aqueous sodium bicarbonate solution and with brine.
• N,N-Diethyl-3-hydroxy-4-iodobenzamide (Int 15.1 ) (423 mg) was dissolved in DMF (2.8 mL) and acetonitrile (0.11 ml_), and potassium carbonate (266 mg) and 1 -bromo-2-methoxyethane (193 mg) were added. The mixture was heated for 30 min in a microwave oven to 150 °C. Thereafter, further 1 -bromo-2- methoxyethane (193 mg) was added, and the mixture was heated for additional 30 min. Subsequently, the reaction mixture was diluted with water and three times extracted with ethyl acetate.

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