US20140045813A1 - Heteroaromatic compounds as btk inhibitors - Google Patents

Heteroaromatic compounds as btk inhibitors Download PDF

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Publication number
US20140045813A1
US20140045813A1 US13/962,260 US201313962260A US2014045813A1 US 20140045813 A1 US20140045813 A1 US 20140045813A1 US 201313962260 A US201313962260 A US 201313962260A US 2014045813 A1 US2014045813 A1 US 2014045813A1
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chosen
mmol
alkoxy
pharmaceutically acceptable
heterocycle
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Inventor
Joerg Martin Bentzien
Angela Kay BERRY
Todd Bosanac
Michael Jason Burke
Darren Todd DISALVO
Joshua Courtney Horan
Shuang LIANG
Can Mao
Wang Mao
Yue Shen
Fariba Soleymanzadeh
Renee M. Zindell
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Boehringer Ingelheim International GmbH
Rosemount Aerospace Inc
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Boehringer Ingelheim International GmbH
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Assigned to OXFORD RF SENSORS LIMITED reassignment OXFORD RF SENSORS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HARRISON, MARTIN
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Priority to US13/962,260 priority Critical patent/US20140045813A1/en
Assigned to BOEHRINGER INGELHEIM INTERNATIONAL GMBH reassignment BOEHRINGER INGELHEIM INTERNATIONAL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BERRY, Angela Kay, BENTZIEN, JOERG MARTIN, DISALVO, DARREN TODD, HORAN, JOSHUA COURTNEY, LIANG, SHUANG, MAO, CAN, MAO, WANG, SHEN, YUE, SOLEYMANZADEH, FARIBA, BOSANAC, TODD, BURKE, MICHAEL JASON, ZINDELL, RENEE
Publication of US20140045813A1 publication Critical patent/US20140045813A1/en
Priority to US14/884,826 priority patent/US20160031872A1/en
Priority to US15/661,644 priority patent/US20170320867A1/en
Priority to US15/814,927 priority patent/US10138229B2/en
Priority to US16/160,048 priority patent/US10875852B2/en
Abandoned legal-status Critical Current

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    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
    • A61K31/4439—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
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Definitions

  • the present invention relates to novel compounds which inhibit BTK and their use as medicaments.
  • Bruton's tyrosine kinase is a member of the Tec family of tyrosine kinases and plays a critical role in B cell development, activation and antibody production.
  • BTK X-linked agammaglobulinemia
  • XLA X-linked agammaglobulinemia
  • the outcome of recent clinical trials with B cell depleting anti-CD20 molecules in diseases such as rheumatoid arthritis (RA) and multiple sclerosis (MS) support the hypothesis that B cells offer an important intervention node for controlling autoimmune disorders (Townsend et al. 2010).
  • B cell activation and proliferation via inhibition of BTK may offer similar therapeutic benefit and is consistent with the demonstrated resistance of BTK-deficient mice to collagen induced arthritis (Jansson, 1993, Clin Exp Immunol 94, 459-xxx) and experimental autoimmune encephalitis (Svensson et al. 2002 and Mangla et al 2004).
  • BlyS supports a role for B cells in the pathophysiology of systemic lupus erythematosus (SLE) (La Cava 2010).
  • BTK inhibitors may offer therapeutic benefit to SLE patients.
  • BTK signal transduction is necessary for the stimulated release of inflammatory cytokines such as TNF from stimulated monocytes (Horwood, J Exp Med, 2003, 1603-xxx) and for optimal actin cytoskeletal organization and lacunar bone resorption in isolated osteoclasts (Danks, 2011, J Bone and Mineral Research, 26, 182-192).
  • Bone marrow derived mast cells lacking BTK exhibit impaired activation-induced degranulation and cytokine release (ref).
  • BTK activity may provide clinical benefit in diseases such as RA, MS, SLE, asthma and allergic disorders.
  • the invention comprises a novel class of heteroaromatic compounds and methods for making and using the same. These compounds are useful for the treatment of autoimmune and allergic disorders in that they exhibit good inhibitory effect upon BTK.
  • a ring is:
  • R 1 is N(R 3 ) 2 or hydrogen; Cy is aryl or heteroaryl each is substituted by R 2 and optionally substituted by halogen, halo C 1-4 alkyl, C 1-4 alkyl and C 1-4 alkoxy; R 2 is chosen from: L-Ar, C 1-6 alkyl and C 1-6 alkoxy, each Ar, C 1-6 alkyl and C 1-6 alkoxy are optionally substituted by halogen, halo C 1-4 alkyl, C 1-4 alkyl, R 3 —S(O) m —, —CN, —C(O)—N(R 3 ) 2 or C 1-4 alkoxy; L is a linker chosen from a bond, O, >C(O), —(CH 2 ) n —, —O—(CH 2 ) n —, —N(R 3 )—, —N(R 3 )—(CH 2 ) n , —(CH 2 ) n —
  • a ring is:
  • Cy is phenyl, pyridinyl, pyridazinyl, pyrimidinyl or pyrazinyl each is substituted by R 2 and optionally substituted by F, C 1 or C 14 alkoxy;
  • R 2 is chosen from: L-Ar and C 1-3 alkoxy, each Ar and C 1-3 alkoxy are optionally substituted by F, Cl, C 1-4 alkyl, R 3 —S(O) 2 —, —CN, —C(O)—NH(R 3 ) and C 1-3 alkoxy;
  • L is a linker chosen from a bond, O, >C(O), —CH 2 —, —O—CH 2 —, —NH—, —NH—CH 2 —, —CH 2 —NH—, —C(O)—NH—CH 2 —, —NH—C(O)—NH— and —N(R 3 )—S(O) m —;
  • Ar is pheny
  • Cy is phenyl or pyridinyl, each is substituted by R 2 and optionally substituted by F, Cl or C 1-2 alkoxy;
  • R 2 is chosen from: L-Ar and C 1-3 alkoxy, each Ar and C 1-3 alkoxy are optionally substituted by F, Cl, C 1-4 alkyl, CH 3 —S(O) 2 —, —CN, —C(O)—NH(R 3 ) and C 1-2 alkoxy;
  • L is a linker chosen from a bond, O, >C(O), —CH 2 —, —O—CH 2 —, —NH—, —NH—CH 2 —, —CH 2 —NH—, —C(O)—NH—CH 2 —, —NH—C(O)—NH— and —N(R 3 )—S(O) n —;
  • Ar is phenyl, pyridinyl, pyridazinyl, pyrimidin
  • Cy is phenyl or pyridinyl, each is substituted by R 2 and optionally substituted by F, Cl or C 1-2 alkoxy;
  • R 2 is chosen from: L-Ar and C 1-3 alkoxy, each Ar and C 1-3 alkoxy are optionally substituted by F, Cl, C 1-4 alkyl, CH 3 —S(O) 2 —, —CN, —C(O)—NH(CH 3 ) and C 1-2 alkoxy;
  • L is a linker chosen from a bond, O, >C(O), —CH 2 —, —O—CH 2 —, —NH—, —NH—CH 2 —, —CH 2 —NH—, —C(O)—NH—CH 2 —, —NH—C(O)—NH— and —N(H)—S(O) 2 —;
  • Ar is phenyl, pyridinyl, benzoxazolyl or piperidinyl or a pharmaceutical
  • X 1 is a linker chosen from a bond and —(CH 2 ) n —; Y is chosen from: a spirocycle chosen from
  • heterocycle chosen from piperidinyl and pyrrolidinyl; and phenyl each heterocycle or phenyl substituted by one R 4 ;
  • R 5 cannot be hydrogen
  • X 1 is a linker chosen from a bond and —(CH 2 ) n —; Y is chosen from: a spirocycle chosen from
  • heterocycle chosen from piperidinyl and pyrrolidinyl; and phenyl each heterocycle or phenyl substituted by one R 4 ;
  • X 3 halogen or hydrogen
  • each R 5 is independently chosen from hydrogen, C 1-3 alkyl, —CF 3 , C 1-3 alkylC 1-3 alkoxy, —CH 2 -heterocycle and heterocycle each heterocycle optionally substituted by F, Cl, OH and CH 3 —S(O) 2 — and each heterocycle chosen from pyrrolidinyl, piperidinyl and 1,4-oxazepane, or a pharmaceutically acceptable salt thereof.
  • a ring is:
  • a ring is:
  • a ring is:
  • a ring is:
  • L is a linker chosen from a bond, O, and —O—(CH 2 ) n —; n is 1-3; Ar is carbocycle or heterocycle; or a pharmaceutically acceptable salt thereof.
  • R 2 is:
  • the invention provides made compounds in Table I which can be made in view of the general schemes, examples and methods known in the art.
  • the present invention further relates to metabolites, and prodrugs of compounds of the formula (I).
  • the present invention further relates to a pharmaceutically acceptable salt of a compound of the formula (I) with inorganic or organic acids or bases.
  • the invention relates to compounds of formula (I)—or the pharmaceutically acceptable salts thereof—as medicaments.
  • the invention relates to compounds of formula (I)—or the pharmaceutically acceptable salts thereof—for use in a method for treatment of a patient.
  • the invention relates to compounds of formula (I)—or the pharmaceutically acceptable salts thereof—for use in the treatment of autoimmune diseases and allergic disorders.
  • the invention relates to the use of compounds of formula (I)—or the pharmaceutically acceptable salts thereof—for preparing a pharmaceutical composition for the treatment of autoimmune diseases and allergic disorders.
  • the invention in another aspect relates to a method for the treatment of autoimmune diseases and allergic disorders comprising administering a therapeutically effective amount of a compound of formula (I)—or one of the pharmaceutically acceptable salts thereof—to a patient.
  • the invention relates to a pharmaceutical preparation containing as active substance one or more compounds of formula (I)—or the pharmaceutically acceptable salts thereof—optionally in combination with conventional excipients and/or carriers.
  • Alkyl denotes monovalent, saturated hydrocarbon chains, which may be present in both straight-chain (unbranched) and branched form. If an alkyl is substituted, the substitution may take place independently of one another, by mono- or polysubstitution in each case, on all the hydrogen-carrying carbon atoms.
  • C 1-5 alkyl includes for example H 3 C—, H 3 C—CH 2 —, H 3 C—CH 2 —CH 2 —, H 3 C—CH(CH 3 )—, H 3 C—CH 2 —CH 2 —CH 2 —, H 3 C—CH 2 —CH(CH 3 )—, H 3 C—CH(CH 3 )—CH 2 —, H 3 C—C(CH 3 ) 2 —, H 3 C—CH 2 —CH 2 —CH 2 —CH 2 —, H 3 C—CH 2 —CH(CH 3 )—, H 3 C—CH 2 —CH(CH 3 )—CH 2 —, H 3 C—CH(CH 3 )—CH 2 —, H 3 C—CH(CH 3 )—CH 2 —CH 2 —, H 3 C—CH(CH 3 )—CH 2 —CH 2 —, H 3 C—CH(CH 3 )—CH 2 —CH 2 —, H 3 C—CH 2 —C(
  • alkyl are methyl (Me; —CH 3 ), ethyl (Et; —CH 2 CH 3 ), 1-propyl (n-propyl; n-Pr; —CH 2 CH 2 CH 3 ), 2-propyl (i-Pr; iso-propyl; —CH(CH 3 ) 2 ), 1-butyl (n-butyl; n-Bu; —CH 2 CH 2 CH 2 CH 3 ), 2-methyl-1-propyl (iso-butyl; i-Bu; —CH 2 CH(CH 3 ) 2 ), 2-butyl (secbutyl; sec-Bu; —CH(CH 3 )CH 2 CH 3 ), 2-methyl-2-propyl (tert-butyl; t-Bu; —C(CH 3 ) 3 ), 1-pentyl (n-pentyl; —CH 2 CH 2 CH 2 CH 3 ), 2-pentyl (—CH(CH 3 )CH 2 CH 2 CH 2 CH 3
  • alkyl also applies if alkyl is a part of another (combined) group such as for example C x-y alkylamino or C x-y alkoxy.
  • alkenyl consists of at least two carbon atoms, wherein at least two adjacent carbon atoms are joined together by a C—C double bond and a carbon atom can only be part of one C—C double bond. If in an alkyl as hereinbefore defined having at least two carbon atoms, two hydrogen atoms on adjacent carbon atoms are formally removed and the free valencies are saturated to form a second bond, the corresponding alkenyl is formed.
  • Alkenyl may optionally be present in the cis or trans or E or Z orientation with regard to the double bond(s).
  • alkynyl consists of at least two carbon atoms, wherein at least two adjacent carbon atoms are joined together by a C—C triple bond. If in an alkyl as hereinbefore defined having at least two carbon atoms, two hydrogen atoms in each case at adjacent carbon atoms are formally removed and the free valencies are saturated to form two further bonds, the corresponding alkynyl is formed.
  • Haloalkyl (haloalkenyl, haloalkynyl) is derived from the previously defined alkyl (alkenyl, alkynyl) by replacing one or more hydrogen atoms of the hydrocarbon chain independently of one another by halogen atoms, which may be identical or different. If a haloalkyl (haloalkenyl, haloalkynyl) is to be further substituted, the substitutions may take place independently of one another, in the form of mono- or polysubstitutions in each case, on all the hydrogen-carrying carbon atoms.
  • haloalkyl haloalkenyl, haloalkynyl
  • haloalkyl haloalkenyl, haloalkynyl
  • —CF 3 —CHF 2 , —CH 2 F, —CF 2 CF 3 , —CHFCF 3 , —CH 2 CF 3 , —CF 2 CH 3 , —CHFCH 3 , —CF 2 CF 2 CF 3 , —CF 2 CH 2 CH 3 , —CF ⁇ CF 2 , —CCl ⁇ CH 2 , —CBr ⁇ CH 2 , —C ⁇ C—CF 3 , —CHFCH 2 CH 3 , —CHFCH 2 CF 3 etc.
  • Halogen relates to fluorine, chlorine, bromine and/or iodine atoms.
  • Cycloalkyl is made up of the subgroups monocyclic hydrocarbon rings, bicyclic hydrocarbon rings and spiro-hydrocarbon rings. The systems are saturated. In bicyclic hydrocarbon rings two rings are joined together so that they have at least two carbon atoms together.
  • a cycloalkyl is to be substituted, the substitutions may take place independently of one another, in the form of mono- or polysubstitutions in each case, on all the hydrogen-carrying carbon atoms. Cycloalkyl itself may be linked as a substituent to the molecule via every suitable position of the ring system.
  • cycloalkyl examples include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl.
  • Spirocycle is a spiro-hydrocarbon ring one carbon atom (spiroatom) belongs to two rings together.
  • Aryl denotes mono-, bi- or tricyclic carbocycles with at least one aromatic carbocycle. Preferably, it denotes a monocyclic group with six carbon atoms (phenyl) or a bicyclic group with nine or ten carbon atoms (two six-membered rings or one six-membered ring with a five-membered ring), wherein the second ring may also be aromatic or, however, may also be saturated or partially saturated.
  • substitutions may take place independently of one another, in the form of mono- or polysubstitutions in each case, on all the hydrogen-carrying carbon atoms.
  • Aryl itself may be linked as a substituent to the molecule via every suitable position of the ring system.
  • aryl examples include phenyl and naphthyl.
  • aryl also applies if aryl is part of another (combined) group as for example in arylamino, aryloxy or arylalkyl.
  • Heterocyclyl denotes ring systems, which are derived from the previously defined cycloalkyl or spirocycle by replacing one or more of the groups —CH 2 — independently of one another in the hydrocarbon rings by the groups —O—, —S— or —NH—, wherein a total of not more than five heteroatoms may be present, at least one carbon atom may be present between two oxygen atoms and between two sulphur atoms or between one oxygen and one sulphur atom and the ring as a whole must have chemical stability. Heteroatoms may optionally be present in all the possible oxidation stages (sulphur sulphoxide —SO—, sulphone —SO 2 —; nitrogen N-oxide).
  • heterocyclyl If a heterocyclyl is substituted, the substitutions may take place independently of one another, in the form of mono- or polysubstitutions in each case, on all the hydrogen-carrying carbon and/or nitrogen atoms. Heterocyclyl itself may be linked as a substituent to the molecule via every suitable position of the ring system.
  • heterocyclyl examples include tetrahydrofuranyl, tetrahydropyranyl, piperidinyl, piperazinyl, pyrrolidinyl, morpholinyl, or the following heterocyclic spirocycles
  • Heteroaryl denotes monocyclic heteroaromatic rings or polycyclic rings with at least one heteroaromatic ring, which compared with the corresponding aryl or cycloalkyl, instead of one or more carbon atoms, one or more identical or different heteroatoms, selected independently of one another from among nitrogen, sulphur and oxygen, wherein the resulting group must be chemically stable.
  • the prerequisite for the presence of heteroaryl is a heteroatom and a heteroaromatic system.
  • heteroaryl If a heteroaryl is to be substituted, the substitutions may take place independently of one another, in the form of mono- or polysubstitutions in each case, on all the hydrogen-carrying carbon and/or nitrogen atoms. Heteroaryl itself may be linked as a substituent to the molecule via every suitable position of the ring system, both carbon and nitrogen.
  • heteroaryl examples include, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, benzoxazolyl, indolyl, isoindolyl, benzofuranyl, benzimidazolyl, benzothiazolyl, and the like.
  • Heteroatoms may optionally be present in all the possible oxidation stages (sulphur ⁇ sulphoxide —SO—, sulphone —SO 2 —; nitrogen N-oxide).
  • Carbocycles include hydrocarbon rings containing from three to twelve carbon atoms. These carbocycles may be either aromatic either aromatic or non-aromatic ring systems. The non-aromatic ring systems may be mono- or polyunsaturated. Preferred carbocycles include but are not limited to cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, cycloheptanyl, cycloheptenyl, phenyl, indanyl, indenyl, benzocyclobutanyl, dihydronaphthyl, tetrahydronaphthyl, naphthyl, decahydronaphthyl, benzocycloheptanyl and benzocycloheptenyl.
  • a given chemical formula or name shall encompass tautomers and all stereo, optical and geometrical isomers (e.g. enantiomers, diastereomers, E/Z isomers, etc.) and racemates thereof as well as mixtures in different proportions of the separate enantiomers, mixtures of diastereomers, or mixtures of any of the foregoing forms where such isomers and enantiomers exist, as well as salts, including pharmaceutically acceptable salts thereof.
  • the compounds and salts of the invention can exist in unsolvated as well as solvated forms with pharmaceutically acceptable solvents such as water, ethanol and the like. In general, the solvated forms such as hydrates are considered equivalent to the unsolvated forms for the purposes of the invention.
  • phrases “pharmaceutically acceptable” is employed herein to refer to those compounds, materials, compositions, and/or dosage forms which are, within the scope of sound medical judgement, suitable for use in contact with the tissues of human beings and animals without excessive toxicity, irritation, allergic response, or other problem or complication, and commensurate with a reasonable benefit/risk ratio.
  • pharmaceutically acceptable salts refers to derivatives of the disclosed compounds wherein the parent compound is modified by making acid or base salts thereof.
  • pharmaceutically acceptable salts include, but are not limited to, mineral or organic acid salts of basic residues such as amines; alkali or organic salts of acidic residues such as carboxylic acids; and the like.
  • such salts include acetates, ascorbates, benzenesulphonates, benzoates, besylates, bicarbonates, bitartrates, bromides/hydrobromides, Ca-edetates/edetates, camsylates, carbonates, chlorides/hydrochlorides, citrates, edisylates, ethane disulphonates, estolates esylates, fumarates, gluceptates, gluconates, glutamates, glycolates, glycollylarsnilates, hexylresorcinates, hydrabamines, hydroxymaleates, hydroxynaphthoates, iodides, isothionates, lactates, lactobionates, malates, maleates, mandelates, methanesulphonates, mesylates, methylbromides, methylnitrates, methylsulphates, mucates, napsy
  • salts can be formed with cations from metals like aluminium, calcium, lithium, magnesium, potassium, sodium, zinc and the like (also see Pharmaceutical salts, Birge, S. M. et al., J. Pharm. Sci., (1977), 66, 1-19).
  • the pharmaceutically acceptable salts of the present invention can be synthesised from the parent compound which contains a basic or acidic moiety by conventional chemical methods. Generally, such salts can be prepared by reacting the free acid or base form of these compounds with a sufficient amount of the appropriate base or acid in water or in an organic diluent like ether, ethyl acetate, ethanol, isopropanol, or acetonitrile, or a mixture thereof.
  • Salts of other acids than those mentioned above which for example are useful for purifying or isolating the compounds of the present invention also comprise a part of the invention.
  • the solid line means that the ring system may be attached to the molecule via the carbon atom 1, 2 or 3, and is thus equivalent to the following representation
  • a therapeutically effective amount for the purposes of this invention is meant a quantity of substance that is capable of obviating symptoms of illness or alleviating these symptoms, or which prolong the survival of a treated patient.
  • reaction conditions and reaction times may vary depending on the particular reactants used. Unless otherwise specified, solvents, temperatures, pressures and other reaction conditions may be readily selected by one of ordinary skill in the art. Specific procedures are provided in the Synthetic Examples section. Intermediates and products may be purified by chromatography on silica gel, recrystallization and/or reverse phase HPLC (RHPLC). Discrete enantiomers may be obtained by resolution of racemic products using chiral HPLC. RHPLC purification methods used anywhere from 0-100% acetonitrile in water containing 0.1% formic acid or 0.1% TFA and used one of the following columns:
  • the compounds according to the invention are prepared by the methods of synthesis described hereinafter in which the substituents of the general formulae have the meanings given hereinbefore. These methods are intended as an illustration of the invention without restricting its subject matter and the scope of the compounds claimed to these examples. Where the preparation of starting compounds is not described, they are commercially obtainable or may be prepared analogously to known compounds or methods described herein. Substances described in the literature are prepared according to the published methods of synthesis.
  • R-3 (20 g, 109 mmol) in Et 2 O (150 mL) is added Zn—Cu (56.2 g, 436 mmol) at 10° C. under N 2 .
  • Trichloroacetyl chloride 39.7 g, 218 mmol
  • DME 150 mL
  • the mixture is allowed to warm to ambient temperature and stirred for 2 days.
  • the mixture is treated with aqueous NaHCO 3 and extracted with EtOAc.
  • the organic layers are washed with brine, dried with Na 2 SO 4 , concentrated and purified by flash chromatography (SiO 2 , Hep to 25% EtOAc in Hep) to give R-4 (11 g, 34%).
  • I-68 (0.59 g, 1.22 mmol) is diluted with EtOH (1 mL) and water (0.5 mL) and Hydrido(dimethylphosphinous acid kP) [hydrogen bis(dimethylphosphinito-kP)]platinum (II) (0.07 g, 0.163 mmol) is added. The mixture is heated at 80° C. overnight then concentrated in vacuo. The residue is dissolved in CH 2 Cl 2 then filtered and concentrated to afford I-69 (0.28 g, 45%) m/z 504.7 [M+H].
  • a vial is charged with I-70 (1.0 g, 5.35 mmol), 2-phenoxy-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-y0-pyridine (2.07 g, 6.95 mmol), tetrakis(triphenylphosphine) palladium (0) (0.62 g, 0.535 mmol) and dissolved in aqueous potassium carbonate (10 mL, 2.0 M) and DME (6 mL). The mixture is heated at 130° C. for 3 h in a microwave. The mixture is filtered then diluted with water, extracted with EtOAc, dried over sodium sulphate, filtered, and concentrated in vacuo. The residue is purified by flash chromatography (SiO 2 , 0-100% EtOAc in heptanes) to give I-71 (1.18 g, 80%) m/z 278.0 [M+H].
  • I-72 (0.31 g, 0.66 mmol) is diluted with EtOH (5 mL) and water (0.5 mL) and Hydrido(dimethylphosphinous acid kP) [hydrogen bis(dimethylphosphinito-kP)]platinum (II) (28 mg, 0.066 mmol) is added. The mixture is heated at 80° C. overnight then concentrated in vacuo. The residue is dissolved in CH 2 Cl 2 then filtered and concentrated to afford a residue that is dissolved in TFA (5 mL) and stirred for 3 h at ambient temperature then concentrated in vacuo. The residue is dissolved in MeOH and passed through an Agilent Stratospheres PL-HCO3 MP SPE cartridge and concentrated in vacuo to afford I-73 (0.25 g, 98%) m/z 391.2 [M+H].
  • I-74 250 mg, 0.514 mmol is diluted with EtOH (5 mL) and water (0.5 mL) and Hydrido(dimethylphosphinous acid kP) [hydrogen bis(dimethylphosphinito-kP)]platinum (II) (22 mg, 0.051 mmol) is added. The mixture is heated at 80° C. overnight then concentrated in vacuo. The residue is dissolved in CH 2 Cl 2 then filtered and concentrated to afford a residue that is dissolved in TFA (5 mL) and stirred for 3 h at ambient temperature then concentrated in vacuo. The residue is dissolved in MeOH and passed through an Agilent Stratospheres PL-HCO3 MP SPE cartridge and concentrated in vacuo to afford I-76 (0.206 g, 98%) m/z 405.3 [M+H].
  • a vial is charged with I-70 (0.50 g, 2.67 mmol), 4-isopropoxyboronic acid (0.58 g, 3.21 mmol), tetrakis(triphenylphosphine) palladium (0) (0.43 g, 0.37 mmol) and dissolved in aqueous potassium carbonate (4 mL, 2.0 M) and DME (3 mL).
  • the mixture is heated at 130° C. for 3 h in a microwave.
  • the mixture is filtered then diluted with water, extracted with EtOAc, dried over sodium sulphate, filtered, and concentrated in vacuo.
  • the residue is purified by flash chromatography (SiO 2 , 0-80% EtOAc in heptanes) to give I-77 (0.473 g, 73%) m/z 243.5 [M+H].
  • I-78 (190 mg, 0.43 mmol) is diluted with EtOH (4 mL) and water (2 mL) and Hydrido(dimethylphosphinous acid kP) [hydrogen bis(dimethylphosphinito-kP)]platinum (II) (11 mg, 0.026 mmol) is added. The mixture is heated at 80° C. overnight then concentrated in vacuo. The residue is dissolved in CH 2 Cl 2 then filtered and concentrated to afford a residue that is dissolved in CH 2 Cl 2 (5 mL) and TFA (1 mL) and stirred overnight at ambient temperature then concentrated in vacuo. The residue is dissolved in MeOH and passed through an Agilent Stratospheres PL-HCO3 MP SPE cartridge and concentrated in vacuo to afford I-79 (110 mg, 71%).
  • a vial is charged with I-70 (0.45 g, 2.41 mmol), 4-n-propoxyboronic acid (0.48 g, 2.65 mmol), tetrakis(triphenylphosphine) palladium (0) (0.28 g, 0.24 mmol) and dissolved in aqueous potassium carbonate (4.8 mL, 2.0 M) and dioxane (2 mL). The mixture is heated at 130° C. overnight. The mixture is filtered then diluted with water, extracted with EtOAc, dried over sodium sulphate, filtered, and concentrated in vacuo. The residue is purified by flash chromatography (SiO 2 , 0-6% MeOH in CH 2 Cl 2 ) to give I-80 (0.400 g, 69%) m/z 242.4 [M+H].
  • I-81 (130 mg, 0.29 mmol) is diluted with EtOH (1.5 mL) and water (0.5 mL) and Hydrido(dimethylphosphinous acid kP) [hydrogen bis(dimethylphosphinito-kP)]platinum (II) (13 mg, 0.029 mmol) is added. The mixture is heated at 80° C. overnight then concentrated in vacuo. The residue is dissolved in EtOAc then filtered and concentrated to afford a residue that is dissolved in CH 2 Cl 2 (1 mL) and TFA (1 mL) and stirred for 1 h at ambient temperature then concentrated in vacuo. The residue is dissolved in MeOH and passed through an Agilent Stratospheres PL-HCO3 MP SPE cartridge and concentrated in vacuo to afford I-82 (80 mg, 84%).
  • I-84 (300 mg, 0.66 mmol) is diluted with EtOH (1.5 mL) and water (0.5 mL) and Hydrido(dimethylphosphinous acid kP) [hydrogen bis(dimethylphosphinito-kP)]platinum (II) (28 mg, 0.066 mmol) is added.
  • the mixture is heated at 80° C. for 72 h then concentrated in vacuo.
  • EtOAc then filtered and concentrated to afford a residue that is dissolved in CH 2 Cl 2 (1 mL) and TFA (1 mL) and stirred for 1 h at ambient temperature then concentrated in vacuo.
  • the residue is dissolved in MeOH and passed through an Agilent Stratospheres PL-HCO3 MP SPE cartridge and concentrated in vacuo to afford I-85 (270 mg).
  • HTRF assay (Cisbio KinEASE-TK cat #62TK0PEC) was performed to quantitate the ability of test compounds to inhibit BTK mediated phosphorylation of substrate. Assays were assembled in 384 well plates where 6 nM of full-length human His-tagged BTK (Life Technologies cat #PV3587) and test compound at varying concentrations were preincubated for 15 minutes at 28° C. Then, 1 uM of TK substrate-biotin and 30 uM ATP were added and incubated for an additional 30 minutes at 28° C.
  • Phospohrylation was detected by adding 62.5 nM Streptavidin-XL665 and TK-Antibody Cryptate diluted 1:100 in HTRF detection buffer (Cisbio cat #62SDBRDF) and incubated for 60 minutes at RT. The plate was read on an Envision plate reader and the fluorescence is measured at 620 nm (cryptate) and 665 nm (XL665). A ratio is calculated (665/620) and converted to POC relative to control and blank wells.
  • Preferred compounds for the treatment of autoimmune disorders exhibit selective inhibition of BTK over other kinases such as EGFR.
  • the compounds described herein show a range of selectivities against EGFR as measured in cellular assays (BTK activity measured by CD69 expression in primary CD19 + cells; EGFR activity measured by EGFR phosphorylation in A431 cells). See Table II.
  • Example B-cell CD69 IC 50 (nM) A431 p-EGFR IC 50 (nM) 54 1.2 6.6 46 2.0 120 161 2.1 400 164 1.5 420 41 1 430 81 0.9 790 160 4.5 1200 78 2.5 1800 165 10 3700 107 8.2 4200 28 9 4700 163 15 5200 112 41 5800 113 24 6300 115 7.8 6400 40 20 >10000 106 30 >10000 158 58 >10000
  • Primary CD 19 + cells were purified from healthy frozen peripheral blood mononuclear cells (AllCells, Emeryville, Calif.) and negatively selected by magnetic separation, >97% purity (Stemcell Technologies, Vancouver, Calif.). Cells were collected and plated in a 96 flat bottom plate at a concentration of 2 ⁇ 10 5 /well in RPMI media containing 10% FBS, rested for 1 hour at 37° c. Cells were treated with inhibitor in duplicates or vehicle control in 1% DMSO final concentration for 1 hour at 37° C., 5% CO 2 .
  • A431 cells (ATCC #CRL-1555 FZ) are thawed and plated in DMEM containing 10% FBS in a 384-well tissue culture treated plate at 15,000 cells/well. After incubating for 24 hours at 37° C., 5% CO 2 , the cells are treated with test compound (1% DMSO final concentration) and incubated for 16 hours at 37° C., 5% CO 2 . EGF (Millipore, 01-107) is added at a final concentration of 60 ng/mL and incubated for 10 minutes. The medium is removed, the cells are lysed, and phospho EGFR is measured (Meso Scale Diagnostics, N31CB-1).
  • the compounds of formula (I) according to the invention are suitable for treating autoimmune and allergic disorders in that they exhibit good inhibitory effect upon BTK.
  • Such diseases include for example: rheumatoid arthritis, systemic lupus erythromatosis, scleroderma, asthma, allergic rhinitis, allergic eczema, B cell lymphoma, multiple sclerosis, juvenile rheumatoid arthritis, juvenile idiopathic arthritis, inflammatory bowel disease, graft versus host disease, psoriatic arthritis, ankylosing spondylitis and uveitis.
  • the compounds of formula (I) may be used on their own or in combination with other active substances according to the invention, optionally also in combination with other pharmacologically active substances.
  • Suitable preparations include for example tablets, capsules, suppositories, solutions—particularly solutions for injection (s.c., i.v., i.m.) and infusion—elixirs, emulsions or dispersible powders.
  • the content of the pharmaceutically active compound(s) should be in the range from 0.1 to 90 wt.-%, preferably 0.5 to 50 wt.-% of the composition as a whole, i.e. in amounts which are sufficient to achieve the dosage range specified below.
  • the doses specified may, if necessary, be given several times a day.
  • Suitable tablets may be obtained, for example, by mixing the active substance(s) with known excipients, for example inert diluents such as calcium carbonate, calcium phosphate or lactose, disintegrants such as corn starch or alginic acid, binders such as starch or gelatine, lubricants such as magnesium stearate or talc and/or agents for delaying release, such as carboxymethyl cellulose, cellulose acetate phthalate, or polyvinyl acetate.
  • excipients for example inert diluents such as calcium carbonate, calcium phosphate or lactose, disintegrants such as corn starch or alginic acid, binders such as starch or gelatine, lubricants such as magnesium stearate or talc and/or agents for delaying release, such as carboxymethyl cellulose, cellulose acetate phthalate, or polyvinyl acetate.
  • excipients for example inert dilu
  • Coated tablets may be prepared accordingly by coating cores produced analogously to the to tablets with substances normally used for tablet coatings, for example collidone or shellac, gum arabic, talc, titanium dioxide or sugar.
  • the core may also consist of a number of layers.
  • the tablet coating may consist of a number of layers to achieve delayed release, possibly using the excipients mentioned above for the tablets.
  • Syrups or elixirs containing the active substances or combinations thereof according to the invention may additionally contain a sweetener such as saccharine, cyclamate, glycerol or sugar and a flavour enhancer, e.g. a flavouring such as vanillin or orange extract. They may also contain suspension adjuvants or thickeners such as sodium carboxymethyl cellulose, wetting agents such as, for example, condensation products of fatty alcohols with ethylene oxide, or preservatives such as p-hydroxybenzoates.
  • a sweetener such as saccharine, cyclamate, glycerol or sugar
  • a flavour enhancer e.g. a flavouring such as vanillin or orange extract.
  • suspension adjuvants or thickeners such as sodium carboxymethyl cellulose, wetting agents such as, for example, condensation products of fatty alcohols with ethylene oxide, or preservatives such as p-hydroxybenzoates.
  • Solutions for injection and infusion are prepared in the usual way, e.g. with the addition of isotonic agents, preservatives such as p-hydroxybenzoates, or stabilisers such as alkali metal salts of ethylenediamine tetraacetic acid, optionally using emulsifiers and/or dispersants, whilst if water is used as the diluent, for example, organic solvents may optionally be used as solvating agents or dissolving aids, and transferred into injection vials or ampoules or infusion bottles.
  • isotonic agents e.g. with the addition of isotonic agents, preservatives such as p-hydroxybenzoates, or stabilisers such as alkali metal salts of ethylenediamine tetraacetic acid, optionally using emulsifiers and/or dispersants, whilst if water is used as the diluent, for example, organic solvents may optionally be used as solvating agents or dissolving aid
  • Capsules containing one or more active substances or combinations of active substances may for example be prepared by mixing the active substances with inert carriers such as lactose or sorbitol and packing them into gelatine capsules.
  • Suitable suppositories may be made for example by mixing with carriers provided for this purpose such as neutral fats or polyethyleneglycol or the derivatives thereof.
  • Excipients which may be used include, for example, water, pharmaceutically acceptable organic solvents such as paraffins (e.g. petroleum fractions), vegetable oils (e.g. groundnut or sesame oil), mono- or polyfunctional alcohols (e.g. ethanol or glycerol), carriers such as e.g. natural mineral powders (e.g. kaolins, clays, talc, chalk), synthetic mineral powders (e.g. highly dispersed silicic acid and silicates), sugars (e.g. cane sugar, lactose and glucose), emulsifiers (e.g.
  • pharmaceutically acceptable organic solvents such as paraffins (e.g. petroleum fractions), vegetable oils (e.g. groundnut or sesame oil), mono- or polyfunctional alcohols (e.g. ethanol or glycerol), carriers such as e.g. natural mineral powders (e.g. kaolins, clays, talc, chalk), synthetic mineral powders (e.g. highly disper
  • lignin e.g. lignin, spent sulphite liquors, methylcellulose, starch and polyvinylpyrrolidone
  • lubricants e.g. magnesium stearate, talc, stearic acid and sodium lauryl sulphate.
  • the preparations are administered by the usual methods, preferably by oral or transdermal route, most preferably by oral route.
  • the tablets may of course contain, apart from the above-mentioned carriers, additives such as sodium citrate, calcium carbonate and dicalcium phosphate together with various additives such as starch, preferably potato starch, gelatine and the like.
  • lubricants such as magnesium stearate, sodium lauryl sulphate and talc may be used at the same time for the tabletting process.
  • the active substances may be combined with various flavour enhancers or colourings in addition to the excipients mentioned above.
  • solutions of the active substances with suitable liquid carriers may be used.
  • the dosage for intravenous use is from 1-1000 mg per hour, preferably between 5 and 500 mg per hour.

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