WO2003032980A1 - 5'-carbamoyl-1,1'-biphenyl-4-carboxamide derivatives and their use as p38 kinase inhibitors - Google Patents

5'-carbamoyl-1,1'-biphenyl-4-carboxamide derivatives and their use as p38 kinase inhibitors Download PDF

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WO2003032980A1
WO2003032980A1 PCT/EP2002/011573 EP0211573W WO03032980A1 WO 2003032980 A1 WO2003032980 A1 WO 2003032980A1 EP 0211573 W EP0211573 W EP 0211573W WO 03032980 A1 WO03032980 A1 WO 03032980A1
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alkyl
optionally substituted
compound
methyl
halogen
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PCT/EP2002/011573
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French (fr)
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Richard Martyn Angell
Nicola Mary Aston
Paul Bamborough
Mark James Bamford
George Stuart Cockerill
Suzanne Joy Merrick
Ann Louise Walker
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Glaxo Group Limited
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Priority to JP2003535783A priority Critical patent/JP2005508960A/en
Priority to EP02782929A priority patent/EP1435942A1/en
Priority to US10/492,699 priority patent/US7396843B2/en
Publication of WO2003032980A1 publication Critical patent/WO2003032980A1/en

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Abstract

Compounds of formula (I): wherein X is a bond or a phenyl group which may be optionally substituted; R1 is selected from an optionally substituted five- to seven-membered heterocyclic ring, an optionally substituted five- to seven-membered heteroaryl ring and an optionally substituted fused bicyclic ring; R2 is selected from hydrogen, C1-6 alkyl and -(CH2)p-C3-7cycloalkyl; or when X is a bond and m and n are both zero R1 and R2, together with the nitrogen atom to which they are bound, form a five- to six-membered heterocyclic ring optionally containing one additional heteroatom selected from oxygen and nitrogen, which can be optionally substituted by C1-4alkyl; R3 is the group -CO-NH-(CH2)q-R4; U is selected from methyl and halogen; W is selected from methyl and chlorine; V and Y are each selected independently from hydrogen, methyl and halogen; Z is selected from -O- and a bond; m and n are independently selected from 0, 1 and 2, wherein each carbon atom of the resulting carbon chain may be optionally substituted with up to two groups selected independently from C1-6alkyl, and the sum of m+ n is from 0 to 4; p is selected from 0 and 1; q and s are selected from 0, 1 and 2; r is selected from 0, 1 and 2; or pharmaceutically acceptable salts or solvated thereof, and their use as pharmaceuticals, particularly as p38 kinase inhibitors.

Description

'-CARBAMOYL-l,l'-BIPHENYL-4-CARBOXAMIDE DERIVATIVES AND THEIR USE AS P38 KINASE INHIBITORS
This invention relates to novel compounds and their use as pharmaceuticals, particularly as p38 kinase inhibitors, for the treatment of certain diseases and conditions.
We have now found a group of novel compounds that are inhibitors of p38 kinase.
According to the invention there is provided a compound of formula (I):
Figure imgf000003_0001
wherein
X is a bond or a phenyl group which may be optionally substituted;
R1 is selected from an optionally substituted five- to seven-membered heterocyclic ring, an optionally substituted five- to seven-membered heteroaryl ring and an optionally substituted fused bicyclic ring;
R2 is selected from hydrogen, C1-6alkyl and -(CH2)p-C3-7cycloalkyl; or when X is a bond and m and n are both zero, R1 and R2, together with the nitrogen atom to which they are bound, form a five- to six-membered heterocyclic ring optionally containing one additional heteroatom selected from oxygen and nitrogen, which can be optionally substituted by C1-4alkyl;
R3 is the group -CO-NH-(CH2)q-R4; when q is 0 to 2 R4 is selected from hydrogen, C1-6alkyl, -C3-7cycloalkyl, CONHR5, phenyl optionally substituted by R7 and/or R8, heteroaryl optionally substituted by R7 and/or R8 and heterocyclyl optionally substituted by R7 and/or R8; and when q is 2 R4 is additionally selected from C1-6alkoxy, NHCOR5, NHCONHR5, NR5R6, and OH;
R5 is selected from hydrogen, C1-6alkyl and phenyl wherein the phenyl group may be optionally substituted by up to two substituents selected from C1-6alkyl and halogen;
R6 is selected from hydrogen and Cι-6alkyl; or R5 and R6, together with the nitrogen atom to which they are bound, form a five- to six-membered heterocyclic or heteroaryl ring optionally containing one additional heteroatom selected from oxygen, sulfur and nitrogen, wherein the ring may be substituted by up to two C1-6alkyl groups;
R7 is selected from Chalky!, C1-6alkoxy, -CONR6R9, -NHCOR9, -SO2NHR9, - NHSO2R9, halogen, trifluoromethyl, -Z-(CH2)s-phenyl optionally substituted by one or more halogen atom, -Z-(CH2)s-heterocyclyl or -Z-(CH2)s-heteroaryl wherein the heterocyclyl or heteroaryl group may be optionally substituted by one or more substituents selected from C1-6alkyl;
R8 is selected from C1-6alkyl and halogen; or when R7 and R8 are ortho substituents, then together with the carbon atoms to which they are bound, R7 and R8 may form a five- or six-membered saturated or unsaturated ring to give a fused bicyclic ring system, wherein the ring that is formed by R7 and R8 may optionally contain one or two heteroatoms selected from oxygen, nitrogen and sulfur;
R9 is selected from hydrogen and C1-6alkyl;
U is selected from methyl and halogen;
W is selected from methyl and chlorine;
V and Y are each selected independently from hydrogen, methyl and halogen;
Z is selected from -O- and a bond; m and n are independently selected from 0, 1 and 2, wherein each carbon atom of the resulting carbon chain may be optionally substituted with up to two groups selected independently from C1-6alkyl, and the sum of m+ n is from 0 to 4; p is selected from 0 and 1; q and s are selected from 0, 1 and 2; r is selected from 0, 1 and 2; or a pharmaceutically acceptable salt or solvate thereof.
According to a further embodiment of the invention there is provided a compound of formula (IA):
Figure imgf000004_0001
wherein R1 , R2, R3, m, n and X are as defined above, or a pharmaceutically acceptable salt or solvate thereof.
In a preferred embodiment, the molecular weight of a compound of formula (I) does not exceed 1000, more preferably 800, even more preferably 600. The group R1 may be optionally substituted by up to three substituents, more preferably one or two substituents, selected from Chalky!, C1-6alkoxy, oxy, halogen, hydroxyC1-6alkyl, -N(C1-6alkyl)2, -CH2-N(C1-6alkyl)2, -CO2C1.6alkyl, phenyl optionally substituted by halogen and benzyl optionally substituted by halogen and/or cyano.
When X is phenyl, the optional substituents for X are selected independently from C1-6alkyl,
Figure imgf000005_0001
halogen, trifluoromethyl, trifluoromethoxy, and cyano. Particularly preferred substituents are methyl, chloro, fluoro, cyano, methoxy and trifluoromethoxy. X may also be optionally substituted by C3.7cycloalkyl.
In a preferred embodiment, when X is phenyl, R1 is preferably an optionally substituted group selected from pyrrolidinyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, tetrazolyl, oxazolyl, oxadiazolyl, piperidinyl, piperazinyl, morpholino, pyridyl, pyrimidinyl, thienyl, imidazolidinyl, benzimidazolyl and quinolyl. Particularly preferred groups are morpholino, pyrrolidinyl, imidazolyl, pyridyl, oxazolyl, oxadiazolyl, pyrazolyl, piperidinyl, piperazinyl and pyrimidinyl. The optional substituents for R1 when X is phenyl are selected independently from C1-6alkyl, C1-6alkoxy, oxy, halogen, hydroxyC1-6alkyl, - N(Cι-6alkyl)2 and -CH2-N(C1-6alkyl)2. Particularly preferred optional substituents are methyl and oxy.
In a preferred embodiment, when X is a bond, R1 is selected from an optionally substituted pyrrolidinyl, isoxazolyl, furyl, thienyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, thiazolyl, oxadiazolyl, piperidinyl, piperazinyl, morpholino, pyridyl, tetrahydrofuranyl, tetrahydrothiophenyl and quinolyl. Particularly preferred groups are piperazinyl, piperidinyl, morpholino, imidazolyl, thienyl and pyrrolidinyl. The optional substituents for R1 when X is a bond are selected independently from C1-6alkyl, C^ 6alkoxy, oxy, halogen, hydroxyCι-6alkyl, -N(C1-6alkyl)2, -CH2-N(C1-6alkyl)2, -CO2C1-6alkyl, phenyl optionally substituted by halogen and benzyl optionally substituted by halogen and/or cyano. Particularly preferred optional substituents are methyl and oxy.
In a preferred embodiment, R2 is selected from hydrogen, C1-4alkyl and -CH2- cyclopropyl, more preferably hydrogen.
In a preferred embodiment, R4 is selected from C1-4alkyl, cyclopropyl, -CH2- cyclopropyl, pyridinyl and phenyl. In a preferred embodiment, R5 is selected from hydrogen and C^alkyl, and phenyl optionally substituted by methyl or halogen.
In a preferred embodiment, R6 is selected from hydrogen and C^alkyl.
In a preferred embodiment, R7 is selected from C1-4alkyl, -NHCOCH3l pyridinyl, pyrimidinyl and oxadiazolyl. In a preferred embodiment, R8 is hydrogen. In a preferred embodiment, R9 is C - alkyl.
In a preferred embodiment, W is methyl.
In a preferred embodiment, V and Y are each selected independently from hydrogen, chlorine and fluorine. In a further preferred embodiment, V is fluorine. In a preferred embodiment, Z is a bond
In a preferred embodiment, m and n are independently selected from 0, 1 and 2, and the sum of m+n is from 0-3.
In a preferred embodiment, q is selected from 0 and 1.
In a preferred embodiment, s is selected from 0 and 1. In a preferred embodiment, r is selected from 0 and 1. In particular, r is 0.
It is to be understood that the present invention covers all combinations of particular and preferred groups described hereinabove.
Particular compounds according to the invention include those mentioned in the examples and their pharmaceutically acceptable salts and solvates. A specific example which may be mentioned is:
N3-Cyclopropyl-N4'-(3-imidazol-1 -ylpropyl)-6-methyl-1 , 1 '-biphenyl-3,4'- dicarboxamide.
Further specific examples which may be mentioned include:
N3-Cyclopropyl-6-methyl-N4'-[4-(4-methylpiperazin-1-yl)benzyl]-1,1'-biphenyl- 3,4'-dicarboxamide;
N3-Cyclopropyl-6-methyl-N '-(1,3-thiazol-2-ylmethyl)-1,1,-biphenyl-3,4'- dicarboxamide;
N3-Cyclopropyl-5-fluoro-6-methyl-N4'-[3-(morpholin-4-ylmethyl)benzyl]-1 , 1 '- biphenyl-3,4'-dicarboxamide;
N3-CycIopropyl-6-methyl-N4'-[3-(morpholin-4-ylmethyl)benzyl]-1 , 1 '-biphenyl-3,4'- dicarboxamide;
N3-Cyclopropyl-6-methyl-N4'-{2-[(4-methylpiperazin-1 -yl)methyl]phenyl}-1 , 1 '- biphenyl-3,4'-dicarboxamide;
tert-Butyl 4-{[({5'-[(cyclopropylamino)carbonyl]-2'-methyl-1 ,1 '-biphenyl-4- yl}carbonyl)amino]methyl}piperidine-1-carboxylate;
N3-Cyclopropyl-6-methyl-N4,-[3-(pyrrolidin-1-ylmethyl)benzyl]-1,1,-biphenyl-3>4'- dicarboxamide; N3-Cyclopropyl-6-methyl-N4,-{3-[(4-methylpiperazin-1-yl)methyl]benzyl}-1,1'- biphenyl-3,4'-dicarboxamide; and N3-Cyclopropyl-6-methyl-N4'-[3-(piperidin-1 -ylmethyl)benzyl]-1 , 1 '-biphenyl-3,4'- dicarboxamide.
As used herein, the term "alkyl" refers to straight or branched hydrocarbon chains containing the specified number of carbon atoms. For example, C1-6alkyl means a straight or branched alkyl containing at least 1 , and at most 6, carbon atoms. Examples of "alkyl" as used herein include, but are not limited to, methyl, ethyl, n-propyl, n-butyl, n-pentyl, isobutyl, isopropyl and t-butyl. A C1-4alkyl group is preferred, for example methyl, ethyl or isopropyl. The said alkyl groups may be optionally substituted with one or more halogen atoms, in particular fluorine atoms, for example, trifluoromethyl. As used herein, the term "alkoxy" refers to a straight or branched chain alkoxy group, for example, methoxy, ethoxy, propoxy, prop-2-oxy, butoxy, but-2-oxy, 2- methylprop-1-oxy, 2-methyIprop-2-oxy, pentoxy, or hexyloxy. A C1-4alkoxy group is preferred, for example methoxy or ethoxy.
As used herein, the term "cycloalkyl" refers to a non-aromatic hydrocarbon ring containing the specified number of carbon atoms. For example, C3.7cycloalkyl means a non-aromatic ring containing at least three, and at most seven, ring carbon atoms. Examples of "cycloalkyl" as used herein include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl. A C3-5 cycloalkyl group is preferred, for example cyclopropyl. As used herein, the terms "heteroaryl ring" and "heteroaryl" refer to an monocyclic five- to seven-membered unsaturated hydrocarbon ring containing at least one heteroatom independently selected from oxygen, nitrogen and sulfur. Preferably, the heteroaryl ring has five or six ring atoms. Examples of heteroaryl rings include, but are not limited to, furyl, thienyl, pyrrolyl, oxazolyl, thiazolyl, isoxazolyl, isothiazolyl, imidazolyl, pyrazolyl, oxadiazolyl, triazolyl, tetrazolyl, thiadiazolyl, pyridyl, pyridazinyl, pyrimidinyl, pyrazinyl and triazinyl. The said ring may be optionally substituted by one or more substituents independently selected from C1-6alkyl and oxy.
As used herein, the terms "heterocyclic ring" or "heterocyclyl" refer to a monocyclic three- to seven-membered saturated or non-aromatic, unsaturated hydrocarbon ring containing at least one heteroatom independently selected from oxygen, nitrogen and sulfur. Preferably, the heterocyclyl ring has five or six ring atoms. Examples of heterocyclyl groups include, but are not limited to, aziridinyl, pyrrolinyl, pyrrolidinyl, imidazolinyl, imidazolidinyl, pyrazolinyl, pyrazolidinyl, piperidyl, piperazinyl, morpholino, tetrahydropyranyl, tetrahydrofuranyl, and thiomorpholino. The said ring may be optionally substituted by one or more substituents independently selected from
C1-6alkyl and oxy.
As used herein, the term "fused bicyclic ring" refers to a ring system comprising two five- to seven-membered saturated or unsaturated rings, the ring system containing at least one heteroatom independently selected from oxygen, nitrogen and sulfur. Preferably, each ring has five or six ring atoms. Examples of suitable fused bicyclic rings include, but are not limited to, naphthyl, indolyl, indolinyl, benzothienyl, quinolyl, isoquinolyl, tetrahydroquinolyl, benzodioxanyl, indanyl and tetrahydronaphthyl. Each ring may be optionally substituted with one or more substituents selected from halogen, C1-6alkyl, oxy, -(CH2)PNR10R11, -CO(CH2)PNR10R11, and imidazolyl. Particularly preferred substituents are chlorine, imidazolyl and -CH2-N(CH3)2.
As used herein, the terms "halogen" or "halo" refer to the elements fluorine, chlorine, bromine and iodine. Preferred halogens are fluorine, chlorine and bromine. A particularly preferred halogen is fluorine.
As used herein, the term "optionally" means that the subsequently described event(s) may or may not occur, and includes both event(s) which occur and events that do not occur.
As used herein, the term "substituted" refers to substitution with the named substituent or substituents, multiple degrees of substitution being allowed unless otherwise stated. As used herein, the term "solvate" refers to a complex of variable stoichiometry formed by a solute (in this invention, a compound of formula (I) or a salt thereof) and a solvent. Such solvents for the purpose of the invention may not interfere with the biological activity of the solute. Examples of suitable solvents include water, methanol, ethanol and acetic acid. Preferably the solvent used is a pharmaceutically acceptable solvent. Examples of suitable pharmaceutically acceptable solvents include water, ethanol and acetic acid. Most preferably the solvent used is water.
Certain compounds of formula (I) may exist in stereoisomeric forms (e.g. they may contain one or more asymmetric carbon atoms or may exhibit cis-trans isomerism). The individual stereoisomers (enantiomers and diastereomers) and mixtures of these are included within the scope of the present invention. The present invention also covers the individual isomers of the compounds represented by formula (I) as mixtures with isomers thereof in which one or more chiral centres are inverted. Likewise, it is understood that compounds of formula (I) may exist in tautomeric forms other than that shown in the formula and these are also included within the scope of the present invention.
Salts of the compounds of the present invention are also encompassed within the scope of the invention and may, for example, comprise acid addition salts resulting from reaction of an acid with a nitrogen atom present in a compound of formula (I).
Salts encompassed within the term "pharmaceutically acceptable salts" refer to non-toxic salts of the compounds of this invention. Representative salts include the following salts: Acetate, Benzenesulfonate, Benzoate, Bicarbonate, Bisulfate, Bitartrate, Borate, Bromide, Calcium Edetate, Camsylate, Carbonate, Chloride, Clavulanate, Citrate, Dihydrochloride, Edetate, Edisylate, Estolate, Esylate, Fumarate, Gluceptate, Gluconate, Glutamate, Glycollylarsanilate, Hexylresorcinate, Hydrabamine, Hydrobromide, Hydrochloride, Hydroxynaphthoate, Iodide, Isethionate, Lactate, Lactobionate, Laurate, Malate, Maleate, Mandelate, Mesylate, Methylbromide, Methylnitrate, Methylsulfate, Monopotassium Maleate, Mucate, Napsylate, Nitrate, N- methylglucamine, Oxalate, Pamoate (Embonate), Palmitate, Pantothenate, Phosphate/diphosphate, Polygalacturonate, Potassium, Salicylate, Sodium, Stearate, Subacetate, Succinate, Tannate, Tartrate, Teoclate, Tosylate, Triethiodide,
Trimethylammonium and Valerate. Other salts which are not pharmaceutically acceptable may be useful in the preparation of compounds of this invention and these form a further aspect of the invention.
The compounds of this invention may be made by a variety of methods, including standard chemistry. Any previously defined variable will continue to have the previously defined meaning unless otherwise indicated. Illustrative general synthetic methods are set out below and then specific compounds of the invention are prepared in the working
Examples.
For example, a general method (A) for preparing the compounds of Formula (I) comprises the reactions set out in Scheme 1 below.
Figure imgf000010_0001
Scheme 1
(i) R1(CH2)nX(CH2)mN R2H, Et3N, THF (ii)Bis(pinnacolato)diboron, PdCI2dppf, KOAc, DMF (iii) (Ph3P)4Pd, Na2CO3) DME (iv) (COCI)2, DMF (v) R4NH2, pyridine (vi) R4NH2) PyBOP, HOBT, DIPEA, DMF
For example, a general method (B) for preparing the compounds of Formula (I) comprises the reactions set out in Scheme 2 below.
Figure imgf000011_0001
Scheme 2
(i) R4NH2, HATU, HOBT, DIPEA, DMF
(ii)(4-Methoxycarbonylphenyl)boronic acid, (Ph3P) Pd, Na2CO3, DME (iii) NaOH, MeOH, H2O (iv) R1(CH2)nX(CH2)mN R2H, HATU, HOBT, DIPEA, THF For example, a general method (C) for preparing the compounds of Formula (I) comprises the reactions set out in Scheme 3 below.
Figure imgf000012_0001
Scheme 3
(i) CsCO3, (Ph3P)4Pd, DME (ii) (COCI)2, CHCI3 (iii) R4NH2
(iv) NaOH, MeOH, H2O
(v) 1-methylsulphonylbenzotriazole, Et3N, THF, DMF
(vi) R1(CH2)nX(CH2)mN R2H, THF
Thus, according to the invention there is provided a process for preparing a compound of formula (I) which comprises:
(a) reacting a compound of formula (XIII)
1
Figure imgf000013_0001
(XIII)
wherein R1, R2, X, U, W, V, Y, m, n and r are as defined above, with a compound of formula (XIV)
R4-(CH2)q-NH2
(XIV) wherein R4 and q are as defined above, under amide forming conditions (if desired, the acid compound (XIII) may be converted to an activated form of the acid, for example the acid chloride, by treatment with, for example, oxalyl chloride, and then the activated acid thus formed reacted with the amine compound (XIV));
(b) reacting a compound of formula (XV)
Figure imgf000014_0001
(XV)
wherein R3, U, W, V, Y and r are as defined above, with a compound of formula (XVI)
R1(CH2)nX(CH2)mNR2H
(XVI) wherein R1, R2, X, m and n are as defined above, under amide forming conditions;
(c) reacting a compound of formula (XVII)
Figure imgf000014_0002
(XVII)
wherein R3, U, W, V, Y and r are as defined above, with a compound of formula (XVI) as defined above; or (d) functional group conversion of a compound of formula (XVIII)
Figure imgf000015_0001
(XVIII)
wherein R3, X, U, W, V, Y, m, n and r are as defined above and R1A and R2^ are R1 and R2 as defined above or groups convertible to R1 and R2, to give a compound of formula (I).
Suitable amide forming conditions are well known in the art and include treating a solution of the acid, in for example THF, with an amine in the presence of, for example, HOBT, HATU and DIPEA.
Whilst it is possible for the compounds, salts or solvates of the present invention to be administered as the new chemical, the compounds of formula (I) and their pharmaceutically acceptable salts and solvates are conveniently administered in the form of pharmaceutical compositions. Thus, in another aspect of the invention, we provide a pharmaceutical composition comprising a compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof, in admixture with one or more pharmaceutically acceptable carriers, diluents or excipients.
The compounds of formula (I) and their pharmaceutically acceptable salts and solvates may be formulated for administration in any suitable manner. They may, for example, be formulated for topical administration or administration by inhalation or, more preferably, for oral, transdermal or parenteral administration. The pharmaceutical composition may be in a form such that it can effect controlled release of the compounds of formula (I) and their pharmaceutically acceptable salts and solvates. A particularly preferred method of administration, and corresponding formulation, is oral administration.
For oral administration, the pharmaceutical composition may take the form of, and be administered as, for example, tablets (including sub-lingual tablets) and capsules (each including timed release and sustained release formulations), pills, powders, granules, elixirs, tinctures, emulsions, solutions, syrups or suspensions prepared by conventional means with acceptable excipients.
For instance, for oral administration in the form of a tablet or capsule, the active drug component can be combined with an oral, non-toxic pharmaceutically acceptable inert carrier such as ethanol, glycerol, water and the like. Powders are prepared by comminuting the compound to a suitable fine size and mixing with a similarly comminuted pharmaceutical carrier such as an edible carbohydrate, as, for example, starch or mannitol. Flavoring, preservative, dispersing and coloring agent can also be present. Capsules can be made by preparing a powder mixture as described above, and filling formed gelatin sheaths. Glidants and lubricants such as colloidal silica, talc, magnesium stearate, calcium stearate or solid polyethylene glycol can be added to the powder mixture before the filling operation. A disintegrating or solubilizing agent such as agar-agar, calcium carbonate or sodium carbonate can also be added to improve the availability of the medicament when the capsule is ingested.
Moreover, when desired or necessary, suitable binders, lubricants, disintegrating agents and coloring agents can also be incorporated into the mixture. Suitable binders include starch, gelatin, natural sugars such as glucose or beta-lactose, corn sweeteners, natural and synthetic gums such as acacia, tragacanth or sodium alginate, carboxymethylcellulose, polyethylene glycol, waxes and the like. Lubricants used in these dosage forms include sodium oleate, sodium stearate, magnesium stearate, sodium benzoate, sodium acetate, sodium chloride and the like. Disintegrators include, without limitation, starch, methyl cellulose, agar, bentonite, xanthan gum and the like. Tablets are formulated, for example, by preparing a powder mixture, granulating or slugging, adding a lubricant and disintegrant and pressing into tablets. A powder mixture is prepared by mixing the compound, suitably comminuted, with a diluent or base as described above, and optionally, with a binder such as carboxymethylcellulose, an aliginate, gelatin, or polyvinyl pyrrolidone, a solution retardant such as paraffin, a resorption accelerator such as a quaternary salt and/or an absorption agent such as bentonite, kaolin or dicalcium phosphate. The powder mixture can be granulated by wetting with a binder such as syrup, starch paste, acadia mucilage or solutions of cellulosic or polymeric materials and forcing through a screen. As an alternative to granulating, the powder mixture can be run through the tablet machine and the result is imperfectly formed slugs broken into granules. The granules can be lubricated to prevent sticking to the tablet forming dies by means of the addition of stearic acid, a stearate salt, talc or mineral oil. The lubricated mixture is then compressed into tablets. The compounds of the present invention can also be combined with free flowing inert carrier and compressed into tablets directly without going through the granulating or slugging steps. A clear or opaque protective coating consisting of a sealing coat of shellac, a coating of sugar or polymeric material and a polish coating of wax can be provided. Dyestuffs can be added to these coatings to distinguish different unit dosages.
Oral fluids such as solution, syrups and elixirs can be prepared in dosage unit form so that a given quantity contains a predetermined amount of the compound. Syrups can be prepared by dissolving the compound in a suitably flavored aqueous solution, while elixirs are prepared through the use of a non-toxic alcoholic vehicle. Suspensions can be formulated by dispersing the compound in a non-toxic vehicle. Solubilizers and emulsifiers such as ethoxylated isostearyl alcohols and polyoxy ethylene sorbitol ethers, preservatives, flavor additives such as peppermint oil or saccharin, and the like can also be added.
Where appropriate, dosage unit formulations for oral administration can be microencapsulated. The formulation can also be prepared to prolong or sustain the release as for example by coating or embedding particulate material in polymers, wax or the like. The compounds of the present invention can also be administered in the form of liposome delivery systems, such as small unilamellar vesicles, large unilamellar vesicles and multilamellar vesicles. Liposomes can be formed from a variety of phospholipids, such as cholesterol, stearylamine or phosphatidylcholines.
The compounds of the present invention can also be administered in the form of liposome emulsion delivery systems, such as small unilamellar vesicles, large unilamellar vesicles and multilamellar vesicles. Liposomes can be formed from a variety of phospholipids, such as cholesterol, stearylamine or phosphatidylcholines.
Compounds of the present invention may also be delivered by the use of monoclonal antibodies as individual carriers to which the compound molecules are coupled. The compounds of the present invention may also be coupled with soluble polymers as targetable drug carriers. Such polymers can include polyvinylpyrrolidone, pyran copolymer, polyhydroxypropylmethacrylamide-phenol, polyhydroxyethylaspartamidephenol, or polyethyleneoxidepolylysine substituted with palmitoyl residues. Furthermore, the compounds of the present invention may be coupled to a class of biodegradable polymers useful in achieving controlled release of a drug, for example, polylactic acid, polepsilon caprolactone, polyhydroxy butyric acid, polyorthoesters, polyacetals, polydihydropyrans, polycyanoacrylates and cross-linked or amphipathic block copolymers of hydrogels.
The present invention includes pharmaceutical compositions containing 0.1 to 99.5%, more particularly, 0.5 to 90% of a compound of the formula (I) in combination with a pharmaceutically acceptable carrier.
Likewise, the composition may also be administered in nasal, ophthalmic, otic, rectal, topical, intravenous (both bolus and infusion), intraperitoneal, intraarticular, subcutaneous or intramuscular, inhalation or insufflation form, all using forms well known to those of ordinary skill in the pharmaceutical arts. For transdermal administration, the pharmaceutical composition may be given in the form of a transdermal patch, such as a transdermal iontophoretic patch.
For parenteral administration, the pharmaceutical composition may be given as an injection or a continuous infusion (e.g. intravenously, intravasculariy or subcutaneously). The compositions may take such forms as suspensions, solutions or emulsions in oily or aqueous vehicles and may contain formulatory agents such as suspending, stabilizing and/or dispersing agents. For administration by injection these may take the form of a unit dose presentation or as a multidose presentation preferably with an added preservative. Alternatively for parenteral administration the active ingredient may be in powder form for reconstitution with a suitable vehicle.
The compounds of the invention may also be formulated as a depot preparation. Such long acting formulations may be administered by implantation (for example subcutaneously or intramuscularly) or by intramuscular injection. Thus, for example, the compounds of the invention may be formulated with suitable polymeric or hydrophobic materials (for example as an emulsion in an acceptable oil) or ion exchange resins, or as sparingly soluble derivatives, for example, as a sparingly soluble salt.
Alternatively the composition may be formulated for topical application, for example in the form of ointments, creams, lotions, eye ointments, eye drops, ear drops, mouthwash, impregnated dressings and sutures and aerosols, and may contain appropriate conventional additives, including, for example, preservatives, solvents to assist drug penetration, and emollients in ointments and creams. Such topical formulations may also contain compatible conventional carriers, for example cream or ointment bases, and ethanol or oleyl alcohol for lotions. Such carriers may constitute from about 1% to about 98% by weight of the formulation; more usually they will constitute up to about 80% by weight of the formulation.
For administration by inhalation the compounds according to the invention are conveniently delivered in the form of an aerosol spray presentation from pressurized packs or a nebulizer, with the use of a suitable propellant, e.g. dichlorodifluoromethane, trichlorofluoromethane, dichlorotetrafluoroethane, tetrafluoroethane, heptafluoropropane, carbon dioxide or other suitable gas. In the case of a pressurized aerosol the dosage unit may be determined by providing a valve to deliver a metered amount. Capsules and cartridges of e.g. gelatin for use in an inhaler or insufflator may be formulated containing a powder mix of a compound of the invention and a suitable powder base such as lactose or starch. The pharmaceutical compositions generally are administered in an amount effective for treatment or prophylaxis of a specific condition or conditions. Initial dosing in human is accompanied by clinical monitoring of symptoms, such symptoms for the selected condition. In general, the compositions are administered in an amount of active agent of at least about 100 μg/kg body weight. In most cases they will be administered in one or more doses in an amount not in excess of about 20 mg/kg body weight per day. Preferably, in most cases, dose is from about 100 μg/kg to about 5 mg/kg body weight, daily. For administration particularly to mammals, and particularly humans, it is expected that the daily dosage level of the active agent will be from 0. 1 mg/kg to 10 mg/kg and typically around 1 mg/kg. It will be appreciated that optimum dosage will be determined by standard methods for each treatment modality and indication, taking into account the indication, its severity, route of administration, complicating conditions and the like. The physician in any event will determine the actual dosage which will be most suitable for an individual and will vary with the age, weight and response of the particular individual. The effectiveness of a selected actual dose can readily be determined, for example, by measuring clinical symptoms or standard anti-inflammatory indicia after administration of the selected dose.
The above dosages are exemplary of the average case. There can, of course, be individual instances where higher or lower dosage ranges are merited, and such are within the scope of this invention. For conditions or disease states as are treated by the present invention, maintaining consistent daily levels in a subject over an extended period of time, e.g., in a maintenance regime, can be particularly beneficial.
In another aspect, the present invention provides a compound of formula (I) or a salt or solvate thereof, for use in therapy.
The compounds of the present invention are generally inhibitors of the serine/threonine kinase p38 and are therefore also inhibitors of cytokine production which is mediated by p38 kinase. Within the meaning of the term "inhibitors of the serine/threonine kinase p38" are included those compounds that interfere with the ability of p38 to transfer a phosphate group from ATP to a protein substrate according to the assay described below.
It will be appreciated that the compounds of the invention may be selective for one or more of the isoforms of p38, for example p38α, p38β, p38γ and/or p38δ. In one embodiment, the compounds of the invention selectively inhibit the p38α isoform. In another embodiment, the compounds of the invention selectively inhibit the p38β isoform. In a further embodiment, the compounds of the invention selectively inhibit the p38α and p38β isoforms. Assays for determining the selectivity of compounds for the p38 isoforms are described in, for example, WO 99/61426, WO 00/71535 and WO
02/46158.
It is known that p38 kinase activity can be elevated (locally or throughout the body), p38 kinase can be incorrectly temporally active or expressed, p38 kinase can be expressed or active in an inappropriate location, p38 kinase can be constitutively expressed, or p38 kinase expression can be erratic; similarly, cytokine production mediated by p38 kinase activity can be occurring at inappropriate times, inappropriate locations, or it can occur at detrimentally high levels.
Accordingly, the present invention provides a method for the treatment of a condition or disease state mediated by p38 kinase activity, or mediated by cytokines produced by the activity of p38 kinase, in a subject which comprises administering to said subject a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof. The compound may be administered as a single or polymorphic crystalline form or forms, an amorphous form, a single enantiomer, a racemic mixture, a single stereoisomer, a mixture of stereoisomers, a single diastereoisomer or a mixture of diastereoisomers.
The present invention also provides a method of inhibiting cytokine production which is mediated by p38 kinase activity in a subject, e.g. a human, which comprises administering to said subject in need of cytokine production inhibition a therapeutic, or cytokine-inhibiting, amount of a compound of the present invention. The compound may be administered as a single or polymorphic crystalline form or forms, an amorphous form, a single enantiomer, a racemic mixture, a single stereoisomer, a mixture of stereoisomers, a single diastereoisomer or a mixture of diastereoisomers.
The present invention treats these conditions by providing a therapeutically effective amount of a compound of this invention. By "therapeutically effective amount" is meant a symptom-alleviating or symptom-reducing amount, a cytokine-reducing amount, a cytokine-inhibiting amount, a kinase-regulating amount and/or a kinase- inhibiting amount of a compound. Such amounts can be readily determined by standard methods, such as by measuring cytokine levels or observing alleviation of clinical symptoms. For example, the clinician can monitor accepted measurement scores for anti-inflammatory treatments.
The compounds of the present invention can be administered to any subject in need of inhibition or regulation of p38 kinase or in need of inhibition or regulation of p38 mediated cytokine production. In particular, the compounds may be administered to mammals. Such mammals can include, for example, horses, cows, sheep, pigs, mice, dogs, cats, primates such as chimpanzees, gorillas, rhesus monkeys, and, most preferably, humans.
Thus, the present invention provides methods of treating or reducing symptoms in a human or animal subject suffering from, for example, rheumatoid arthritis, osteoarthritis, asthma, psoriasis, eczema, allergic rhinitis, allergic conjunctivitis, adult respiratory distress syndrome, chronic pulmonary inflammation, chronic obstructive pulmonary disease, chronic heart failure, silicosis, endotoxemia, toxic shock syndrome, inflammatory bowel disease, tuberculosis, atherosclerosis, neurodegenerative disease, Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, epilepsy, multiple sclerosis, aneurism, stroke, irritable bowel syndrome, muscle degeneration, bone resorption diseases, osteoporosis, diabetes, reperfusion injury, graft vs. host reaction, allograft rejections, sepsis, systemic cachexia, cachexia secondary to infection or malignancy, cachexia secondary to aquired immune deficiency syndrome (AIDS), malaria, leprosy, infectious arthritis, leishmaniasis, Lyme disease, glomerulonephritis, gout, psoriatic arthritis, Reiter's syndrome, traumatic arthritis, rubella arthritis, Crohn's disease, ulcerative colitis, acute synovitis, gouty arthritis, spondylitis, and non articular inflammatory conditions, for example, herniated/ruptured/prolapsed intervertebral disk syndrome, bursitis, tendonitis, tenosynovitis, fibromyalgic syndrome and other inflammatory conditions associated with ligamentous sprain and regional musculoskeletal strain, pain, for example that associated with inflammation and/or trauma, osteopetrosis, restenosis, thrombosis, angiogenesis, cancer including breast cancer, colon cancer, lung cancer or prostatic cancer, which comprises administering to said subject a therapeutically effective amount of a compound of formula(l) or a pharmaceutically acceptable salt or solvate thereof.
A further aspect of the invention provides a method of treatment of a human or animal subject suffering from rheumatoid arthritis, asthma, psoriasis, chronic pulmonary inflammation, chronic obstructive pulmonary disease, chronic heart failure, systemic cachexia, glomerulonephritis, Crohn's disease, neurodegenerative disease, Alzheimer's disease, Parkinson's disease, epilepsy and cancer including breast cancer, colon cancer, lung cancer and prostatic cancer, which comprises administering to said subject a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof.
A further aspect of the invention provides a method of treatment of a human or animal subject suffering from rheumatoid arthritis, asthma, psoriasis, chronic pulmonary inflammation, chronic obstructive pulmonary disease, chronic heart failure, systemic cachexia, glomerulonephritis, Crohn's disease and cancer including breast cancer, colon cancer, lung cancer and prostatic cancer, which comprises administering to said subject a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof.
A further aspect of the invention provides a method of treatment of a human or animal subject suffering from rheumatoid arthritis, neurodegenerative disease,
Alzheimer's disease, Parkinson's disease and epilepsy which comprises administering to said subject a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof.
A further aspect of the invention provides a method of treatment of a human or animal subject suffering from any type of pain including chronic pain, rapid onset of analgesis, neuromuscular pain, headache, cancer pain, acute and chronic inflammatory pain associated with osteoarthritis and rheumatoid arthritis, post operative inflammatory pain, neuropathic pain, diabetic neuropathy, trigeminal neuralgia, post-hepatic neuralgia, inflammatory neuropathies and migraine pain which comprises administering to said subject a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof.
A further aspect of the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, for the preparation of a medicament for the treatment of a condition or disease state mediated by p38 kinase activity or mediated by cytokines produced by p38 kinase activity. A further aspect of the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, for the preparation of a medicament for the treatment of a condition or disease state selected from rheumatoid arthritis, osteoarthritis, asthma, psoriasis, eczema, allergic rhinitis, allergic conjunctivitis, adult respiratory distress syndrome, chronic pulmonary inflammation, chronic obstructive pulmonary disease, chronic heart failure, silicosis, endotoxemia, toxic shock syndrome, inflammatory bowel disease, tuberculosis, atherosclerosis, neurodegenerative disease, Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, epilepsy, multiple sclerosis, aneurism, stroke, irritable bowel syndrome, muscle degeneration, bone resorption diseases, osteoporosis, diabetes, reperfusion injury, graft vs. host reaction, allograft rejections, sepsis, systemic cachexia, cachexia secondary to infection or malignancy, cachexia secondary to aquired immune deficiency syndrome (AIDS), malaria, leprosy, infectious arthritis, leishmaniasis, Lyme disease, glomerulonephritis, gout, psoriatic arthritis, Reiter's syndrome, traumatic arthritis, rubella arthritis, Crohn's disease, ulcerative colitis, acute synovitis, gouty arthritis, spondylitis, and non articular inflammatory conditions, for example, herniated/ruptured/prolapsed intervertebral disk syndrome, bursitis, tendonitis, tenosynovitis, fibromyalgic syndrome and other inflammatory conditions associated with ligamentous sprain and regional musculoskeletal strain, pain, for example that associated with inflammation and/or trauma, osteopetrosis, restenosis, thrombosis, angiogenesis, and cancer including breast cancer, colon cancer, lung cancer or prostatic cancer.
A further aspect of the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, for the preparation of a medicament for the treatment of a condition or disease state selected from rheumatoid arthritis, asthma, psoriasis, chronic pulmonary inflammation, chronic obstructive pulmonary disease, chronic heart failure, systemic cachexia, glomerulonephritis, Crohn's disease, neurodegenerative disease, Alzheimer's disease, Parkinson's disease, epilepsy, and cancer including breast cancer, colon cancer, lung cancer and prostatic cancer.
A further aspect of the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, for the preparation of a medicament for the treatment of a condition or disease state selected from rheumatoid arthritis, asthma, psoriasis, chronic pulmonary inflammation, chronic obstructive pulmonary disease, chronic heart failure, systemic cachexia, glomerulonephritis,
Crohn's disease and cancer including breast cancer, colon cancer, lung cancer and prostatic cancer.
A further aspect of the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, for the preparation of a medicament for the treatment of a condition or disease state selected from rheumatoid arthritis, neurodegenerative disease, Alzheimer's disease, Parkinson's disease and epilepsy.
A further aspect of the invention provides the use of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, for the preparation of a medicament for the treatment of any type of pain including chronic pain, rapid onset of analgesis, neuromuscular pain, headache, cancer pain, acute and chronic inflammatory pain associated with osteoarthritis and rheumatoid arthritis, post operative inflammatory pain, neuropathic pain, diabetic neuropathy, trigeminal neuralgia, post-hepatic neuralgia, inflammatory neuropathies and migraine pain. The compounds of formula (I) and their salts, solvates and physiologically functional salts and solvates may be employed alone or in combination with other therapeutic agents for the treatment of the above-mentioned conditions. In particular, in rheumatoid arthritis therapy, combination with other chemotherapeutic or antibody agents is envisaged. Combination therapies according to the present invention thus comprise the administration of at least one compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof and at least one other pharmaceutically active agent. The compound(s) of formula (I) or pharmaceutically acceptable salt(s) or solvate(s) thereof and the other pharmaceutically active agent(s) may be administered together or separately and, when administered separately, this may occur separately or sequentially in any order. The amounts of the compound(s) of formula (I) or pharmaceutically acceptable salt(s) or solvate(s) thereof and the other pharmaceutically active agent(s) and the relative timings of administration will be selected in order to achieve the desired combined therapeutic effect. Examples of other pharmaceutically active agents which may be employed in combination with compounds of formula (I) and their salts and solvates for rheumatoid arthritis therapy include: immunosuppresants such as amtolmetin guacil, mizoribine and rimexolone; anti-TNFα agents such as etanercept, infliximab, diacerein; tyrosine kinase inhibitors such as leflunomide; kallikrein antagonists such as subreum; interleukin 11 agonists such as oprelvekin; interferon beta 1 agonists; hyaluronic acid agonists such as NRD-101 (Aventis); interleukin 1 receptor antagonists such as anakinra; CD8 antagonists such as amiprilose hydrochloride; beta amyloid precursor protein antagonists such as reumacon; matrix metalloprotease inhibitors such as cipemastat and other disease modifying anti-rheumatic drugs (DMARDs) such as methotrexate, sulphasalazine, cyclosporin A, hydroxychoroquine, auranofin, aurothioglucose, gold sodium thiomalate and penicillamine.
Examples
The following examples are illustrative embodiments of the invention, not limiting the scope of the invention in any way. Reagents are commercially available or are prepared according to procedures in the literature. LCMS was conducted on a column (3.3cm x 4.6mm ID, 3um ABZ+PLUS), at a Flow Rate of 3ml/min, Injection Volume of 5μl, at room temperature and UV Detection Range at 215 to 330nm.
General Method A:
Benzoic acid (0.17mmol), HATU (0.2mmol), HOBT (0.17mmol), DIPEA (0.51mmol), and amine (0.2mmol) were mixed in DMF (2ml) and the reaction stirred at room temperature for 24h. Further portions of amine (O.Oδmmol) and HATU (0.052mmol) were added and the mixture heated for 18h at 60°C. The solvent was evaporated under vacuum and the residue partitioned between DCM (5ml) and aqueous sodium carbonate (1M,
5ml). The organic phase was reduced to dryness under vacuum and the amide purified as specified in the example.
Example 1: N3-Cyclopropyl-6-methyl-N4'-(4-methylpiperazin-1 -yl)-1 , 1 '-biphenyl- 3,4'-dicarboxamide a) N3-Cyclopropyl-6-methyl-N4'-(4-methylpiperazin-1 -yl)-1 , 1 '-biphenyl-3,4'- dicarboxamide was synthesised from 3'-[(cyclopropylamino]carbonyl]-6'-methyl-1,1'- biphenyl-4-yl)carboxylic acid and 1-methylpiperazine using method A. Purified by chromatography on an SPE (silica, 5g) eluting with a DCM/ethanol/ammonia gradient (500:8:1 to 40:8:1). NMR: δH [2H6] - DMSO 8.42,(1 H, d), 7.75,(1 H, dd), 7.69,(1 H, d),
7.46,(2H, d), 7.43,(2H, d), 7.38,(1 H, d), 3.62,(2H, b), 2.84,(1 H, m), 2.32,(6H, b), 2.27,(3H, s), 2.20,(3H, s), 0.67,(2H, m), 0.55,(2H, m). LCMS: retention time 2.10min, MH+378. b) 3'-[(Cyclopropylamino]carbonyl]-6'-methyl-1 , 1 '-biphenyl-4-yl)carboxylic acid Methyl 3'-[(cyclopropylamino]carbonyl]-6'-methyl-1,1'-biphenyl-4-yl)carboxylate (2.7g,
8.7mmol) and lithium hydroxide monohydrate (0.77g, 18.3mmol) were mixed in THF (20ml) and water (10ml) and heated at 80°C for 2h. The THF was evaporated under vacuum and hydrochloric acid (2N) added to the aqueous with vigorous stirring. The solid produced was filtered off, dissolved in methanol and absorbed onto silica. Purified by flash column chromatography eluting with DCM/ethanol/ammonia (20:8:1). The product fractions were concentrated under vacuum to give 3'- [(cyclopropylamino]carbonyl]-6'-methyl-1,1'-biphenyl-4-yl)carboxylic acid (2.0g, 78%). LCMS: retention time 2.94min, MH+ 296. c) Methyl 3'-[(cyclopropyIamino]carbonyl]-6'-methyl-1 ,1 '-biphenyl-4-yl)carboxylate N-Cyclopropyl-3-iodo-4-methylbenzamide (4.7g, 15.6mmol), (4- methoxycarbonylphenyl)boronic acid (3.4g, 18.7mmol), aqueous sodium carbonate (1 , 50ml) and tetrakis(triphenylphosphine)palladium (1.8g, 0.156mmol) in DME (100ml) were heated at 95°C for 18h. The reaction mixture was absorbed onto silica and purified by flash column chromatography eluting with DCM/ethanol/ammonia (500:8:1). The product fractions were reduced to dryness under vacuum to give methyl 3'- [(cyclopropylamino]carbonyl]-6'-methyl-1 ,1'-biphenyl-4-yl)carboxylate (2.76g, 57%). LCMS: retention time 3.21 min, MH+ 310. d) N-Cyclopropyl-3-iodo-4-methylbenzamide 3-lodo-4-methylbenzoic acid (5g, 19.1mmol) and HATU (8.71g, 22.9mmol) in DMF
(25ml) were stirred at room temperature for 10minutes. HOBT (2.58g, 19.1mmol), cyclopropylamine (1.37g, 22.9mmol) and DIPEA (2.5ml, 57.3mmol) were added and stirring continued for 18h. The DMF was evaporated under vacuum and the residue partitioned between DCM (100ml) and aqueous sodium carbonate (1M, 75ml). The aqueous layer was extracted with DCM (50ml) and the combined organic phases washed with brine (75ml) and dried (magnesium sulphate). The solution was absorbed onto silica and purified by chromatography on silica eluting with ethyl acetate/cyclohexane (1:3). The product fractions were reduced to dryness under vacuum to give N-cyclopropyl-3-iodo-4-methylbenzamide (4.7g, 82%). LCMS: retention time 3.09min, MH+ 302.
Example 2: N3-Cvclopropyl-N4'-(3-imidazol-1-ylpropyl)-6-methyl-1 ,1'-biphenyl-3.4'- dicarboxamide
N3-Cyclopropyl-N4'-(3-imidazol-1 -ylpropyl)-6-methyl-1 , 1 '-biphenyI-3,4'-dicarboxamide was synthesised from 3'-[(cyclopropylamino]carbonyl]-6'-methyl-1 ,1'-biphenyl-4- yl)carboxylic acid and 1-(3-aminopropyl)imidazole using method A. Purified by chromatography on silica, eluting with a DCM/ethanol/ammonia gradient (200:8:1 to 75:8:1). NMR: δH [2H6] - DMSO 8.58,(1 H, t), 8.43,(1 H, d), 7.93,(2H, d), 7.75,(1 H, dd), 7.68,(1 H, d), 7.66,(1 H, s), 7.47,(2H, d), 7.38,(1 H, d), 7.21 , (1H, s), 6.89,(1 H, s), 4.03,(2H, t), 3.26,(2H, q), 2.83,(1 H, m), 2.26,(3H, s), 1.97,(2H, m), 0.67,(2H, m), 0.55,(2H, m). LCMS: retention time 2.20min, MH+ 403.
Example 3: N3-Cvclopropyl-6-methyl-N4'-(3-morpholin-4-ylpropyl)-1 , 1 '-biphenyl-
3,4'-dicarboxamide
N3-Cyclopropyl-6-methyl-N4'-(3-morpholin-4-ylpropyl)-1 , 1 '-biphenyl-3,4'-dicarboxamide was synthesised from 3'-[(cyclopropylamino]carbonyl]-6'-methyl-1,1'-biphenyl-4- yl)carboxylic acid and 4-(3-aminopropyl)morpholine using method A. Purified by chromatography on silica, eluting with a DCM/ethanol/ammonia gradient (200:8:1 to 75:8:1). NMR: δH [2H6] - DMSO 8.55,(1 H, t), 8.42,(1 H, d), 7.91, (2H, d), 7.74,(1 H, dd), 7.68,(1 H, d), 7.46,(2H, d), 7.38,(1 H, d), 3.56,(4H, t), 3.30,(2H, m), 2.83,(1 H, m), 2.34,(6H, m), 2.26,(3H, s), 1.69,(2H, m), 0.67,(2H, m), 0.54,(2H, m). LCMS: retention time 2.28min, MH+ 422.
Example 4: N3-Cyclopropyl-6-methyl-N4'-r3-(4-methylpiperazin-1 -yl)propyll-1 , 1 '- biphenyl-3.4'-dicarboxamide
N3-Cyclopropyl-6-methyl-N4'-[3-(4-methylpiperazin-1-yl)propyl]-1,1'-biphenyl-3,4'- dicarboxamide was synthesised from 3'-[(cyclopropylamino]carbonyl]-6'-methyl-1,1'- biphenyl-4-yl)carboxylic acid and 1-(3-aminopropyl)-4-methylpiperazine using method A. Purified by chromatography on silica, eluting with a DCM/ethanol/ammonia gradient (100:8:1 to 40:8:1). NMR: δH [2H6] - DMSO 8.56,(1 H, t), 8.42,(1 H, d), 7.91,(2H, d), 7.74,(1 H, dd), 7.68,(1 H, d), 7.45,(2H, d), 7.38,(1 H, d), 3.30,(2H, m), 2.83,(1 H, m), 2.48- 2.17,(13H, bm), 2.14,(3H, s), 1.68,(2H, m), 0.67,(2H, m), 0.54,(2H, m).
LCMS: retention time 2.2min, MH+ 435.
Example 5: N4'-(3-lmidazol-1-ylpropyl)-6-methyl-N3-propyl-1 ,1'-biphenyl-3,4'- dicarboxamide a) 5'-[(1H-1,2,3-Benzotriazol-1-yl)carbonyl]-2'-methyl-N-propyl-1 ,1'-biphenyl-3- carboxamide (25mg, 0.062mmol) in THF (1ml) was mixed with 1-(3- aminopropyl)imidazole (7.2μl) in THF (0.6ml) and the reaction stirred at room temperature for 4h. The reaction was loaded onto an SPE (aminopropyl, 1g) and eluted with chloroform, ethyl acetate and methanol. The methanol fraction was applied to an SPE (SCX, 0.5g), washed with methanol and eluted with methanol/ammonia. The solvent was evaporated from the methanol/ammonia fractions to give N4'-(3-imidazol-1- ylpropyl)-6-methyl-N3-propyl-1,1'-biphenyl-3,4'-dicarboximide. NMR: δH CDCI3
7.82,(2H, d), 7.67,(1 H, dd), 7.62,(1 H, d), 7.47,(1 H, s), 7.40,(1 H, t), 7.32-7.28,(3H, m), 7.03,(1 H, s), 6.97,(1 H, s), 6.70,(1 H, t), 4.05,(2H, m), 3.48,(2H, q), 3.39,(2H, q), 2.12,(2H, m), 1.62,(2H, m), 0.96,(3H, t). LCMS: retention time 2.33min, MH+ 405. b) 4'-[(1 H-1 ,2,3-Benzotriazol-1 -yl)carbonyl]-6-methyl-N-propyl-1 , 1 '-biphenyl-3- carboxamide
6'-Methyl-3'-[(propylamino)carbonyl]-1 , 1 '-biphenyl-4-carboxyIic acid (121 mg,
0.41 mmol), triethylamine (100μl) and 1-(methylsulphonyl)-1H-benzotriazole (119mg, 0.6mmol) were mixed in THF (3ml) and DMF (0.5ml) and heated at reflux for 3h. The reaction was concentrated under vacuum and partitioned between chloroform (5ml) and water (5ml). The aqueous was washed with chloroform (3ml) and the combined organics reduced to dryness under vacuum. The residue was chromatographed on an SPE (silica, 5g) eluting with chloroform, ether and ethylacetate, which after evaporation of the solvent under vacuum gave 4'-[(1H-1,2,3-benzotriazol-1-yl)carbonyl]-6-methyl-N- propyl-1 , 1 '-biphenyl-3-carboxamide (150mg). c) 6'-Methyl-3'-[(propylamino)carbonyl]-1 , 1 '-biphenyl-4-carboxylic acid Methyl 6'-methyl-3'-[(propylamino)carbonyl]-1 ,1'-biphenyl-4-carboxylate (216mg, 0.7mmol) in methanol (4ml) was mixed with aqueous sodium hydroxide (2N, 1ml) and stirred at room temperature for 2h. The methanol was evaporated, the reaction diluted with water (4ml) and extracted with chloroform (2x 5ml). The aqueous was acidified with hydrochloric acid (2N, 2ml) and extracted with chloroform (2x 6ml). Both sets of organic extracts were combined in methanol (4ml) and stirred with aqueous sodium hydroxide (2N, 2ml) for 3h. The methanol was evaporated, the reaction diluted with water (4ml) and washed with chloroform (2x 5ml). The aqueous was acidified with hydrochloric acid (2N, 2ml) and extracted with chloroform (2x 6ml). The solvent was evaporated from the organic extracts to give 6'-methyl-3'-[(propylamino)carbonyl]-1,1'- biphenyl-4-carboxylic acid (121mg). NMR: δH CDCI3 8.13,(2H, d), 7.69,(1 H, dd), 7.62,(1H, d), 7.41,(2H, d), 7.35,(1H, d), 3.42,(2H, t), 2.30,(3H, s), 1.64,(2H, m), 0.99,(3H, t). d) Methyl 6'-methyl-3'-[(propylamino)carbonyl]-1 ,1'-biphenyl-4-carboxylate
4'-(Methoxycarbonyl)-6-methyl-1,1'-biphenyl-3-carboxylic acid (190mg, 0.7mmol) and oxalyl chloride (70μl, 0.77mol) in chloroform (4ml) were stirred at room temperature for 15min. Propylamine (200μl) was added and stirring continued for 45min. The reaction was quenched with water (4ml), the phases separated and the organic phase passed through an aminopropyl SPE eluting with chloroform. After evaporation of the solvent this gave methyl 6'-methyl-3'-[(propylamino)carbonyI]-1,1'-biphenyl-4-carboxylate (216mg). LCMS: retention time 3.26min, MH+ 312. e) 4'-(Methoxycarbonyl)-6-methyl-1 , 1 '-biphenyl-3-carboxylic acid 3-lodo-4-methylbenzoic acid (8.7g, 33.3mmol), (4-methoxycarbonylphenyl)boronic acid (6.0g, 33.3mmol), caesium carbonate (10.8g, 33.3mmol) and tetrakis(triphenylphosphine)palladium (1.92g, 1.67mmol) in DME (120ml) were heated at 90°C for 6h. The cooled reaction mixture was filtered and the residue washed with DME. The combined filtrate and washings were absorbed onto silica and chromatographed on a silica flash column eluting with DCM/ethanol/ ammonia (40:8:1 then 30:8:1). The product fractions were reduced to dryness under vacuum to give 4'-
(methoxycarbonyl)-6-methyl-1,1'-biphenyl-3-carboxylic acid (2.28g, 25%). LCMS: retention time 3.22min, [M-H]" 269. f) 1 -(Methylsulphonyl)-I H-benzotriazole
Methanesulphonyl chloride (9.3ml, 0.12mol) in toluene (30ml) was added dropwise to a solution of benzotriazole (11.9g, 0.1mol) and pyridine (12ml, 0.16mol) in toluene
(120ml). The reaction was stirred at room temperature for 20h, diluted with ethyl acetate (150ml), washed with water (2x 100ml), brine (150ml) and dried (magnesium sulphate). The solvent was evaporated under vacuum to give 1-(methylsulphonyl)-1H- benzotriazole (19g). NMR: δH CDCI3 8.17,(1 H, m), 8.02,(1 H, m), 7.69,(1H, m), 7.55,(1 H, m), 3.52,(3H, s).
Example 6: N3-Cvclopropyl-6-methyl-N4 -r4-(4-methylpiperazin-1-yl)benzyll-1,1'- biphenyl-3,4'-dicarboxamide
Example 7: N3-Cvclopropyl-6-methyl-N4'-(1,3-thiazol-2-ylmethyl)-1,1'-biphenyl- 3.4'-dicarboxamide
Example 8: N3-Cyclopropyl-6-methyl-N4 -f 3-[(4-methylpiperazin-1 - ynmethyllphenvD-l , 1 '-biphenyl-3,4'-dicarboxamide
General Method B: HATU (65mg, 0.17mmol) was added to a solution of {3'-[(cyclopropylcarbonyl)amino]-6'- methyl-biphen-4-yl}carboxylic acid (50mg, 0.17mmol) in DMF (2ml). After 5 minutes HOBT (23mg, 0.17mmol), the chosen amine (0.17mmol) and DIPEA (0.087ml, 0.51 mmol) were added and the reaction mixture stirred at room temperature under nitrogen for 18 hours. The DMF was removed in vacuo and the residue partitioned between DCM (5ml) and aqueous sodium carbonate (1M, 5ml). The layers were separated and the organic layer purified by SPE cartridge (Si, 5g) eluting in turn with DCM, chloroform, ether, ethyl acetate, acetonitrile, acetone, ethanol and DCM:ethanol:ammonia (40:8:1, 20:8:1 , 10:8:1) to give the desired products.
Figure imgf000028_0001
Example 9: N3-Cvclopropyl-5-fluoro-6-methyl-N4'-[3-(morpholin-4- ylmethyl)benzyll-1 , 1 '-biphenyl-3,4'-dicarboxamide {3'-[(Cyclopropylamino)carbonyl]-5'-fluoro-6'-methyl-1 , 1 '-biphen-4-yl}carboxylic acid (Intermediate 1, 31 mg, O.IOmmol), 1-(3-dimethylaminopropyl)-3-ethyIcarbodiimide hydrochloride (21 mg, 0.11 mmol), HOBT (15mg, 0.11 mmol) and 4-(3- aminomethylbenzyl)morpholine (Intermediate 3, 0.11 mmol) were dissolved in DMF (4ml). DIPEA (19μl, 0.11 mmol) was added to the solution which was then stirred for 5 hours at 40°C. Ethyl acetate (25ml) and water (25ml) were added. The ethyl acetate layer was separated and washed sequentially with saturated sodium hydrogen carbonate and hydrochloric acid (0.5M). The solvent was removed in vacuo and the residue was purified by mass-directed HPLC to give N3-cyclopropyl-5-fluoro-6-methyl- N4'-[3-(morpholin-4-ylmethyl)benzyl]-1 , 1 '-biphenyl-3,4'-dicarboxamide. LCMS: MH+ 502, 3.02minutes.
(a) {3'-[(Cyclopropylamino)carbonyl]-5'-fluoro-6'-methyl-1 , 1 '-biphen-4-yl}carboxylic acid (Intermediate 1)
3-Bromo-N-cyclopropyl-5-fluoro-4-methylbenzamide (Intermediate 2, 120mg,
0.45mmol), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid (111mg, 0.45mmol) and tetrakisftriphenylphosphine) palladium (51 mg, 0.045mmol) were dissolved in DME (3ml) and aqueous sodium carbonate (1M, 450μl) was added. The mixture was refluxed at 80°C for 16 hours. Solvent was removed in vacuo and the residue was purified by silica biotage chromatography, eluting with 2:1 ethyl acetate: cyclohexane followed by 9:1 ethyl acetate:methanol. To give {3'- [(cyclopropylamino)carbonyl]-5'-fluoro-6'-methyl-1 ,1 '-biphen-4-yl}carboxylic acid (129mg, 91%).
LCMS: MH+ 314, retention time 3.06 min.
(b) 3-Bromo-N-cyclopropyl-5-fluoro-4-methylbenzamide (Intermediate 2)
3-Fluoro-4-methylbenzoic acid (462mg, 3.0mmol) was added to a stirred mixture of bromine (2.31ml, 45mmol) and iron powder (252mg, 4.5mmol) under nitrogen. The reaction was stirred at 20°C for 4 hours and then left to stand for 16 hours. Sodium thiosulphate solution (200ml) was added and the product was extracted into ethyl acetate (3 x 150ml). Ethyl acetate extracts were combined and evaporated in vacuo. The crude product (mixture of isomers) was dissolved in DMF (7ml). Cyclopropylamine
(208μl, 3.0mmol), HOBT (405mg, 3.0mmol), 1-(3-dimethylaminopropyl)-3- ethylcarbodiimide hydrochloride (575mg, 3.0mmol) and DIPEA (525μl, 3.0mmol) were added to the stirred solution. The reaction was stirred for 5 hours at 20°C. Solvent was removed in vacuo and the residue was partitioned between ethyl acetate and water. Combined ethyl acetate extracts were washed sequentially with aqueous sodium hydrogen carbonate and hydrochloric acid (0.5M), then dried (magnesium sulphate). The ethyl acetate was evaporated in vacuo and the residue was purified by silica biotage chromatography eluting with cyclohexane:ethyl acetate (6:1)to give 3- bromo-N-cyclopropyl-5-fluoro-4-methylbenzamide (359mg, 44%). NMR: δH - CDCI3 7.68,(1H, s), 7.39,(1H, d), 6.19,(1H, bs), 2.88,(1H, m), 2.36,(3H, d),
0.88,(2H, m), 0.63,(2H, m). LCMS: MH+ 272/274, retention time 3.12 min.
(c) 4-(3-Aminomethylbenzyl)morpholine (Intermediate 3)
A solution of N-tert-butyloxycarbonyl-3-(4-morpholinylmethylbenzyl)-carbamic acid tert- butyl ester (Intermediate 4, 1.8g) in hydrogen chlorine in dioxane (4N) was stirred at room temperature for 2hours.The solvent was evaporated under vacuum and the residue partitioned between water (10ml) and ethyl acetate (10ml). The organic phase was extracted with water (5ml) and the combined aqueous phases basified with sodium hydroxide (2N). The aqueous was extracted with ethyl acetate (3x 10ml) and the organic extracts combined, dried (magnesium sulphate) and the solvent evaporated in vacuo to give 3-(4-morpholinylmethyl)benzylamine (370mg).
NMR; δH - CDCI3 7.44-7.16, (4H, m), 3.93-3.46, (8H, m), 2.47,(4H, m). MS: MH+ 207. (d) N-tert-Butyloxycarbonyl-3-(4-morpholinylmethylbenzyl)-carbamic acid tert-butyl ester (Intermediate 4)
Morpholine (2.3ml) was added to a solution of (3-chloromethyl-benzyl)-carbamic acid tert-butyl ester (Intermediate 5, 1.7g) in THF (20ml) and the mixture heated at reflux under nitrogen for 6hours. Concentration of the reaction under vacuum gave N-tert- butyloxycarbonyl-3-(4-morpholinylmethyl)benzylamine (1.94g).
NMR; δH - CDCI37.41-7.16,(4H, m), 4.91,(1 H, b), 4.42,(2H, b), 3.72,(4H, m), 3.50,(2H, s), 2.45,(4H, m), 1.5,(9H, s). MS: MH+ 307.
(e) (3-Chloromethylbenzyl)-carbamic acid tert-butyl ester (Intermediate 5)
Triethylamine (21.27ml, 152.6mmol) was added to a suspension of 3- chloromethylbenzylamine hydrochloride (Intermediate 6, 167.92mmol) in dry THF (180ml). A solution of di-tert-butyl dicarbonate (14.75g, 67.58mmoI) in dry THF (50ml) was added dropwise at 0°C. Once the addition was complete, the reaction mixture was stirred at room temperature for 18 hours. The mixture was filtered and the filtrate concentrated in vacuo. The residue was dissolved in ethyl acetate (250ml) and washed with water (150ml). The aqueous layer was extracted with ethyl acetate (50ml). The combined organic extracts were washed with cold hydrochloric acid (1 , 80ml), aqueous sodiumhydrogen carbonate solution (100ml), dried (magnesium sulphate), filtered and concentrated in vacuo to give (3-Chloromethylbenzyl)-carbamic acid tert- butyl ester (12g, 46.9mmol). MS: MNH4 + 273.
(f) 3-Chloromethylbenzylamine hydrochloride (Intermediate 6)
Hexamethylenetriamine (27.13g, 0.194mol) was added to a solution of dichloro-m- xylene (34g, 0.194mol) in chloroform (230ml) and the mixture heated at reflux for 30minutes. The cooled reaction was filtered and the filtrate reduced to dryness under vacuum. The residue was dissolved in ethanol (340ml), treated with concentrated hydrochloric acid (32ml) and heated at reflux for 3hours. The reaction was reduced to 4ml under vacuum, diluted with ether (250ml) and filtered to give 3- chloromethylbenzylamine hydrochloride (10.57g). MS: MH+ 156.
Example 10: N3-Cvclopropyl-6-methyl-N ' 3-(morpholin-4-ylmethyl)benzvn-1.1'- biphenyl-3,4'-dicarboxamide Example 11 : N3-Cyclopropyl-6-methyl-N4'-(2-[(4-methylpiperazin-1 - yl)methyllphenyl>-1 , 1 '-biphenyl-3,4'-dicarboxamide
Example 12: tert-Butyl 4-f r((5'-r(cvclopropylamino)carbonvπ-2'-methyl-1 , 1 '-biphenyl- 4-yl)carbonyl)amino]methyl)piperidine-1-carboxylate
Example 13: N -Cyclopropyl-6-methyl-N4'-f2-(4-methylpiperazin-1 -vDphenylM , 1 '- biphenyl-3.4'-dicarboxamide
Example 14: N -Cvclopropyl-6-methyl-N4'-[3-(4-methylpiperazin-1-yl)phenvn-1.1'- biphenyl-3,4'-dicarboxamide
General Method C:
HATU (65mg, 0.17mmol) was added to a solution of {3'-[(cyclopropylcarbonyl)amino]-6'- methyl-biphen-4-yl}carboxylic acid (50mg, 0.17mmol) in DMF (2ml). After 5 minutes HOBT (23mg, 0.17mmol), the amine (0.17mmol) and DIPEA (0.087ml, 0.51mmol) were added and the reaction mixture stirred at room temperature under nitrogen for 18 hours.
The reaction was partitioned between ethyl acetate (50ml) and hydrochloric acid (1 M, 50ml). The organic phase was washed with aqueous sodium carbonate (1M, 50ml) and brine (25ml), dried (magnesium sulphate), and the solvent removed in vacuo. The crude material was purified by Biotage cartidge (Si, 8g) eluting with a toluene:ethanol gradient (95:5 to 70:30) to yield the desired products.
Figure imgf000031_0001
Example 15: N3-Cvclopropyl-6-methyl-N4'-r3-(pyrrolidin-1 -ylmethvPbenzyll-1.1 ' biphenyl-3.4'-dicarboxamide
Example 16: N3-Cvclopropyl-6-methyl-N4'-f3-r(4-methylpiperazin-1- yl)methvnbenzylM,1'-biphenyl-3,4'-dicarboxamide Example 17: N3-Cvclopropyl-6-methyl-N4'-f4-(morpholin-4-ylmethyl)benzvn-1 ,1'- biphenyl-3,4'-dicarboxamide
Example 8: N -Cyclopropyl-6-methyl-N4'-{4-f(4-methylpiperazin-1- yl)methynbenzyl)-1 , 1 '-biphenyl-3,4'-dicarboxamide
Example 19: N3-Cvclopropyl-6-methyl-N4'-(pyridin-4-ylmethyl)-1 , 1 '-biphenyl-3,4'- dicarboxamide
Example 20: N -Cvclopropyl-6-methyl-N4'-r4-(piperidin-1-ylmethyl)benzvπ-1,1'- biphenyl-3.4'-dicarboxamide
Example 21 : N -Cyclopropyl-6-methyl-N4'-f4-(pyrrolidin-1 -ylmethyl)benzyll-1 , 1 '- biphenyl-3.4'-dicarboxamide
Example 22: N3-Cyclopropyl-N4'-[3-(1 H-imidazol-1-ylmethyl)phenyn-6-methyl-1 ,T bipheny I-3 ,4'-dicarboxamide
Example 23: N3-Cvclopropyl-6-methyl-N4'-r3-(piperidin-1 -ylmethyDbenzylH , 1 '- biphenyl-3,4'-dicarboxamide
Example 24: N3-Cyclopropyl-6-methyl-N4'-(tetrahvdrofuran-2-ylmethyl)-1 , 1 '- biphenyl-3,4'-dicarboxamide
General Method D:
A solution of {3'-[(cyclopropylamino)carbonyl]-6'-methyl-1,1'-biphen-4-yl}carboxylic acid (50mg, 0.17mmol) in DMF (1ml) was treated with HATU (65mg, 0.17mmoi) at room temperature. After δminutes this was added to a solution of the amine (0.17mmol) and HOBT (23mg, 0.17mmol) in DMF (1ml). DIPEA (87ul, 3eq) was added. The reaction mixture was left at room temperature for 16hrs, then concentrated in vacuo. The residue was dissolved in DCM (1ml) and loaded onto a SPE cartridge (1g, aminopropyl) which had been pre-equilibrated with DCM. Residual sample was washed on with another portion of DCM (0.5ml) , The cartridge was then eluted with: DCM (1x2.5ml), chloroform (1x2.5ml), ethyl acetate (1x2.5ml), and methanol (1x2.5ml). The fractions containing product were isolated by evaporation to give the desired product.
Figure imgf000032_0001
Figure imgf000033_0001
Example 25: N3-Cvclopropyl-N4'-(f5-r(dimethylamino)methvn-2-furyl)methyl)-6- methyl-1.1'-biphenyl-3,4'-dicarboxamide
HATU (65mg, 0.17mmol) was added to a solution of {3'-[(cyclopropylcarbonyl)amino]-6'- methyl-biphen-4-yl}carboxylic acid (δOmg, 0.17mmol) in DMF (1ml). After δ minutes HOBT (23mg, 0.17mmol), 2-aminomethyl-5-(dimethylaminomethyl)furan oxalic acid salt (68mg, 0.204mmol) and DIPEA (0.087ml, 0.51 mmol) were added and the reaction mixture stirred at room temperature under nitrogen for 18 hours. The DMF was removed in vacuo and the residue partitioned between DCM (10ml) and aqueous sodium carbonate (1M, 10ml). The organic phase wwas reduced to dryness under vacuum and purified by SPE cartridge (Si, 10g) eluting in turn with DCM, ether, ethyl acetate, acetonitrile, acetone and ethanol to give the N -cyclopropyl-N4'-({5- [(dimethyIamino)methyl]-2-furyl}methyl)-6-methyl-1 , 1 '-biphenyl-3,4'-dicarboxamide (35mg, 0.081 mmol).
NMR: δH [2H6] - DMSO 9.05,(1 H, bt,), 8.43,(1 H, bd), 7.9, (2H, d) 7.77,(1 H, dd), 7.70,(1 H, d), 7.48,(2H, d), 7.39,(1 H, d ), 6.20,(2H, dd), 4.46,(2H, d), 3.36,(2H, s), 2.85,(1 H, m), 2.27,(3H, s), 2.12,(6H, s), 0.72-0.52,(4H,2xm). LC/MS: MH+432, retention time 2.31 minutes.
Example 26: N3-Cvclopropyl-6-methyl-N '-(piperidin-4-ylmethyl)-1.1'-biphenyl-3.4'- dicarboxamide
Trifluoroacetic acid (1ml) and 1 drop of water were added to tert-butyl 4-{[({δ'-
[(cyclopropylamino)carbonyl]-2'-methyl-1 ,1 '-biphenyl-4- yl}carbonyl)amino]methyl}piperidine-1-carboxylate (19mg, 0.038mmol) and the solution stirred at room temperature under nitrogen for 1 hour. The trifluoroacetic acid was removed in vacuo and the residue partitioned between ethyl acetate (5ml) and aqueous sodium carbonate (1M, δml). The layers were separated and the aqueous layer extracted with ethyl acetate (2xδml). The organic extracts were washed with brine (10ml), dried (magnesium sulphate) and concentrated in vacuo to give N~3~- cyclopropyl-6-methyl-N~4~'-(piperidin-4-ylmethyl)-1 , 1 '-biphenyl-3,4'-dicarboxamide (8mg, 0.020mmol).
NMR: δH [2H6] - DMSO 8.56,(1 H, bt), 8.44,(1 H, bd), 7.92,(2H, d) 7.77,(1 H, dd), 7.69,(1H, d), 7.48,(2H, d), 7.39,(1 H, d ), 3.16,(2H, bt), 3.02,(2H, bdt), 2.84,(1H, m), 2.52,(2H, m), 2.28,(3H, s), 1.22-1.12,(3H, bm), 1.75-1.63,(3H,m + bd), 0.69-0.52,(4H, 2xm). LC/MS: MH+ 392, retention time 2.26minutes.
Abbreviations
DCM Dichloromethane
DIPEA N,N-Diisopropylethylamine
DME Dimethoxyethane
DMF Dimethylformamide
DMSO Dimethylsulphoxide
HATU O-(7-Azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate
HBTU O-Benzotriazol-1-yl-N,N,N',N'-tetramethyluronium hexafluorophosphate
HOBT 1-Hydroxybenzotriazole hydrate PyBOP Benzotriazol-1-yl-oxy-tripyrrolidinophosphonium hexafluorophosphate SPE Solid phase extraction THF Tetrahydrofuran
The activity of the compounds of the invention as p38 inhibitors may be demonstrated in the following assays:
p38 Kinase Assay The peptide substrate used in the p38 assay was biotin-IPTSPITTTYFFFRRR- amide. The p38 and MEK6 proteins were purified to homogeneity from E.coli expression systems. The fusion proteins were tagged at the N-terminus with Glutathione-S-Transferase (GST). The maximum activation was achieved by incubating 20uL of a reaction mixture of 30nM MEK6 protein and 120nM p38 protein in the presence of 1.5uM peptide and 10mM Mg(CH3CO2)2 in 100mM HEPES, pH 7.5, added to 15uL of a mixture of 1.5uM ATP with O.OδuCi [g-33P]ATP, with or without 15uL of inhibitor in 6%DMSO. The controls were reactions in the presence (negative controls) or absence (positive controls) of 50 mM EDTA. Reactions were allowed to proceed for 60 min at room temperature and quenched with addition of 50uL of 250mM EDTA and mixed with 150uL of Streptavidin SPA beads (Amersham) to O.δmg/reaction. The Dynatech Microfluor white U-bottom plates were sealed and the beads were allowed to settle overnight. The plates were counted in a Packard TopCount for 60 seconds. IC50 values were obtained by fitting raw data to %l = 100*(1-(I-C2)/(C1-C2)), where I was CPM of background, C1 was positive control, and C2 was negative control.
α P38 Fluorescence Polarisation Method αP38 was prepared in house. SB4777790-R Ligand was diluted in HEPES containing MgCI2, CHAPS, DTT and DMSO. This was added to blank wells of a Black NUNC 384 well plate. αP38 was added to this ligand mixture then added to the remainder of the 384 well plate containing controls and compounds. The plates were read on an LJL Analyst and Fluorescence Anisotropy used to calculate the compound inhibition
The application of which this description and claims forms part may be used as a basis for priority in respect of any subsequent application. The claims of such subsequent application may be directed to any feature or combination of features described herein. They may take the form of product, composition, process or use claims and may include, by way of example and without limitation, one or more of the following claims:

Claims

Claims:
A compound of formula (I):
Figure imgf000036_0001
wherein
X is a bond or a phenyl group which may be optionally substituted;
R1 is selected from an optionally substituted five- to seven-membered heterocyclic ring, an optionally substituted five- to seven-membered heteroaryl ring and an optionally substituted fused bicyclic ring;
R2 is selected from hydrogen, C1-6alkyl and -(CH2)p-C3-7cycloalkyl; or when X is a bond and m and n are both zero, R1 and R2, together with the nitrogen atom to which they are bound, form a five- to six-membered heterocyclic ring optionally containing one additional heteroatom selected from oxygen and nitrogen, which can be optionally substituted by C1-4alkyl;
R3 is the group -CO-NH-(CH2)q-R4; when q is 0 to 2 R4 is selected from hydrogen, C1-6alkyl, -C3-7cycloalkyl, CONHR5, phenyl optionally substituted by R7 and/or R8, heteroaryl optionally substituted by R7 and/or R8 and heterocyclyl optionally substituted by R7 and/or R8; and when q is 2 R4 is additionally selected from C^alkoxy, NHCOR5, NHCONHR5, NR5R6, and OH;
R5 is selected from hydrogen, C^alM and phenyl wherein the phenyl group may be optionally substituted by up to two substituents selected from C1-6alkyl and halogen;
R6 is selected from hydrogen and d-6alkyl; or R5 and R6, together with the nitrogen atom to which they are bound, form a five- to six-membered heterocyclic or heteroaryl ring optionally containing up to one additional heteroatom selected from oxygen, sulfur and nitrogen, wherein the ring may be substituted by up to two C1-6alkyl groups; R7 is selected from C1-6alkyl, C1-6alkoxy, -CONR6R9, -NHCOR9, -SO2NHR9, -
NHSO2R9, halogen, trifluoromethyl, -Z-(CH2)s-phenyl optionally substituted by one or more halogen atom, -Z-(CH2)s-heterocyclyl or -Z-(CH2)s-heteroaryl wherein the heterocyclyl or heteroaryl group may be optionally substituted by one or more substituents selected from C1-6alkyl;
R8 is selected from C1-6alkyl and halogen; or when R7 and R8 are ortho substituents, then together with the carbon atoms to which they are bound, R7 and R8 may form a five- or six-membered saturated or unsaturated ring to give a fused bicyclic ring system, wherein the ring that is formed by R7 and R8 may optionally contain one or two heteroatoms selected from oxygen, nitrogen and sulfur;
R9 is selected from hydrogen and Cι.6alkyl; U is selected from methyl and halogen;
W is selected from methyl and chlorine; V and Y are each selected independently from hydrogen, methyl and halogen;
Z is selected from -O- and a bond; m and n are independently selected from 0, 1 and 2, wherein each carbon atom of the resulting carbon chain may be optionally substituted with up to two groups selected independently from C1-6alkyl, and the sum of m+ n is from 0 to 4; p is selected from 0 and 1; q and s are selected from 0, 1 and 2; r is selected from 0, 1 and 2; or a pharmaceutically acceptable salt or solvate thereof.
2. A compound according to claim 1 wherein R1 is optionally substituted by up to three substituents selected from Cι-6alkyl, C1-6alkoxy, oxy, halogen, hydroxyC1-6alkyl, - N(C1-6alkyl)2, -CH2-N(C1-6alkyl)2, -CO2C1-6alkyl, phenyl optionally substituted by halogen and benzyl optionally substituted by halogen and/or cyano.
3. A compound according to claim 1 or 2 wherein X is optionally substituted phenyl, and R1 is selected from optionally substituted pyrrolidinyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, tetrazolyl, oxazolyl, oxadiazolyl, piperidinyl, piperazinyl, morpholino, pyridyl, pyrimidinyl, thienyl, imidazolidinyl, benzimidazolyl and quinolyl; wherein the optional substituents for R1 are selected independently from C1-6alkyl, C1-6alkoxy, oxy, halogen, hydroxyC1-6alkyl, -N(C1.6alkyl)2 and -CH2-N(C1-6alkyl)2.
4. A compound according to claim 1 or 2 wherein X is a bond, and R is selected from an optionally substituted pyrrolidinyl, isoxazolyl, furyl, thienyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, thiazolyl, oxadiazolyl, piperidinyl, piperazinyl, morpholino, pyridyl, tetrahydrofuranyl, tetrahydrothiophenyl and quinolyl; wherein the optional substituents for R1 are selected independently from C1-6alkyl, C1-6alkoxy, oxy, halogen, hydroxyCι.6alkyl, -N(C1-6alkyl)2, -CH2-N(C1-6alkyl)2, -CO2C1-6alkyl, phenyl optionally substituted by halogen and benzyl optionally substituted by halogen and/or cyano.
5. A compound according to any one of the preceding claims wherein R2 is selected from hydrogen, C1- alkyl and -CH2-cyclopropyl.
6. A compound according to any one of the preceding claims wherein m and n are independently selected from 0, 1 and 2, and the sum of m+n is from 0-3.
7. A compound according to any one of the preceding claims wherein R4 is selected from C1-4alkyl, cyclopropyl, -CH2-cyclopropyl, pyridinyl and phenyl.
8. A compound according to claim 1 as defined in any one of Examples 1 to 26, or a pharmaceutically acceptable salt or solvate thereof.
9. A process for preparing a compound according to any one of claims 1 to 8 which comprises:
(a) reacting a compound of formula (XIII)
Figure imgf000038_0001
(XIII)
wherein R1, R2, X, U, W, V, Y, m, n and r are as defined in claim 1 , with a compound of formula (XIV)
R4-(CH2)q-NH2
(XIV) wherein R4 and q are as defined in claim 1, under amide forming conditions, optionally converting the acid compound (XIII) to an activated form of the acid before reaction with the amine compound (XIV);
(b) reacting a compound of formula (XV)
Figure imgf000039_0001
(XV)
wherein R3, U, W, V, Y and r are as defined in claim 1, with a compound of formula (XVI)
Ri(CH2)nX(CH2)mNR H
(XVI) wherein R1, R2, X, m and n are as defined in claim 1, under amide forming conditions;
(c) reacting a compound of formula (XVII)
Figure imgf000039_0002
(XVII)
wherein R3, U, W, V, Y and r are as defined in claim 1 , with a compound of formula (XVI) as defined above; or
(d) functional group conversion of a compound of formula (XVIII)
Figure imgf000040_0001
(XVIII)
wherein R3, X, U, W, V, Y, m, n and r are as defined in claim 1 and R1A and R2A are R1 and R2 as defined in claim 1 or groups convertible to R1 and R2, to give a compound of formula (I).
10. A pharmaceutical composition comprising a compound according to any one of claims 1 to 8 or a pharmaceutically acceptable salt or solvate thereof, in admixture with one or more pharmaceutically acceptable carriers, diluents or excipients.
11. A method for treating a condition or disease state mediated by p38 kinase activity or mediated by cytokines produced by the activity of p38 kinase comprising administering to a patient in need thereof a compound according to any one of claims 1 to 8 or a pharmaceutically acceptable salt or solvate thereof.
12. A compound according to any one of claims 1 to 8 or a pharmaceutically acceptable salt or solvate thereof for use in therapy.
13. Use of a compound according to any one of claims 1 to 8 or a pharmaceutically acceptable salt or solvate thereof in the manufacture of a medicament for use in the treatment of a condition or disease state mediated by p38 kinase activity or mediated by cytokines produced by the activity of p38 kinase.
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