WO2013189864A1 - N-alkyltriazole compounds as lpar antagonists - Google Patents
N-alkyltriazole compounds as lpar antagonists Download PDFInfo
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- WO2013189864A1 WO2013189864A1 PCT/EP2013/062461 EP2013062461W WO2013189864A1 WO 2013189864 A1 WO2013189864 A1 WO 2013189864A1 EP 2013062461 W EP2013062461 W EP 2013062461W WO 2013189864 A1 WO2013189864 A1 WO 2013189864A1
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- phenyl
- methyl
- triazol
- biphenyl
- substituted
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- IPBJLADFKWCTMI-QGZVFWFLSA-N C[C@H](c1ccccc1)OC(Nc1c(-c(c(F)c2)ccc2-c2ccc(C3(CC3)C(O)=O)cc2)nn[n]1C)=O Chemical compound C[C@H](c1ccccc1)OC(Nc1c(-c(c(F)c2)ccc2-c2ccc(C3(CC3)C(O)=O)cc2)nn[n]1C)=O IPBJLADFKWCTMI-QGZVFWFLSA-N 0.000 description 1
- RCVHTKMAMPDRAT-GOSISDBHSA-N C[C@H](c1ccccc1)OC(Nc1c(-c(cc2)ccc2-c2cc(C3(CC3)C(O)=O)ccc2)nn[n]1C)=O Chemical compound C[C@H](c1ccccc1)OC(Nc1c(-c(cc2)ccc2-c2cc(C3(CC3)C(O)=O)ccc2)nn[n]1C)=O RCVHTKMAMPDRAT-GOSISDBHSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
- C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D249/04—1,2,3-Triazoles; Hydrogenated 1,2,3-triazoles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/4192—1,2,3-Triazoles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
- C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D249/04—1,2,3-Triazoles; Hydrogenated 1,2,3-triazoles
- C07D249/06—1,2,3-Triazoles; Hydrogenated 1,2,3-triazoles with aryl radicals directly attached to ring atoms
Definitions
- the present invention relates to organic compounds useful for therapy and/or prophylaxis in a mammal of an inflammatory disease or disorder, and in particular to N-alkyltriazole compounds, their manufacture, pharmaceutical compositions containing them and their use as lysophospha- tidic acid (LPA) antagonists.
- N-alkyltriazole compounds their manufacture, pharmaceutical compositions containing them and their use as lysophospha- tidic acid (LPA) antagonists.
- LPA is a family of bioactive phosphate lipids which function like a growth factor mediator by interacting with LPA receptors, a family of G-protein-coupled receptors (GPCRs).
- the lipid family has long chain saturated (such as C18:0 or C16:0) or unsaturated (C 18: 1 or C20:4) carbon chains attached to the glycerol through an ester linkage.
- LPA is produced by multi-step enzymatic pathways through the de-esterification of membrane phospholipids.
- Enzymes that contribute to LPA synthesis include lysophospho lipase D (lysoPLD), autotaxin (ATX), phospholipase Al (PLA1), phospho lipase A2 (PLA2) and acylglycerol kinase (AGK) (British J. of Pharmacology 2012, 165, 829-844).
- LPA receptors There are at least six LPA receptors identified (LPAR1-6). LPA signaling exerts a broad range of biological responses on many different cell types, which can lead to cell growth, cell proliferation, cell migration and cell contraction. Up regulation of the LPA pathway has been linked to multiple diseases, including cancer, allergic airway inflammation, and fibrosis of the kidney, lung and liver. Therefore, targeting LPA receptors or LPA metabolic enzymes could provide new approaches towards the treatment of medically important diseases that include neuropsychiatric disorders, neuropathic pain, infertility, cardiovascular disease, inflammation, fibrosis, and cancer (Annu. Rev. Pharmacol. Toxicol. 2010, 50, 157-186; J. Biochem. 2011, 150, 223-232).
- Fibrosis is the result of an uncontrolled tissue healing process leading to excessive accumulation of extracellular matrix (ECM). Recently it was reported that the LPA1 receptor was over expressed in idiopathic pulmonary fibrosis (IPF) patients. Mice with LPA1 receptor knockout were protected from bleomycin- induced lung fibrosis (Nature Medicine 2008, 14, 45-54). Thus, antagonizing LPA1 receptor may be useful for the treatment of fibrosis, such as renal fibrosis, pulmonary fibrosis, arterial fibrosis and systemic sclerosis.
- fibrosis such as renal fibrosis, pulmonary fibrosis, arterial fibrosis and systemic sclerosis.
- Ri is hydrogen or halogen
- R 2 is unsubstituted lower alkyl
- R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl;
- R4 is hydrogen, halogen, cycloalkyl acetic acid, unsubstituted phenyl or phenyl substituted with a moiety selected from acetic acid, cyclopropanecarboxylic acid, cyclopropanecarboxylic acid methyl ester, methanesulfonylaminocarbonyl-cyclopropane and cyclopropyltetrazole, or a pharmaceutically acceptable salt thereof.
- a pharmaceutical composition comprising a therapeutically effective amount of a compound according to formula (I) and a therapeutically inert carrier.
- a method for the treatment or prophylaxis of pulmonary fibrosis comprises the step of administering a therapeutically effective amount of a compound according to formula (I) to a patient in need thereof.
- alkyl refers to a branched or straight-chain monovalent saturated aliphatic hydrocarbon radical of one to twenty carbon atoms, preferably one to sixteen carbon atoms, more preferably one to ten carbon atoms.
- lower alkyl refers to a branched or straight-chain alkyl radical of one to nine carbon atoms, preferably one to six carbon atoms, more preferably one to four carbon atoms. This term is further exemplified by radicals such as methyl, ethyl, /? -propyl, isopropyl, /? -butyl, s-butyl, isobutyl, t-butyl, n-pentyl, 3-methylbutyl, n- hexyl, 2-ethylbutyl and the like.
- cycloalkyl refers to a monovalent mono- or polycarbocyclic radical of three to ten, preferably three to six carbon atoms. This term is further exemplified by radicals such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, norbornyl, adamantyl and the like.
- the "cycloalkyl” moieties can optionally be substituted with one, two, three or four substituents, with the understanding that said substituents are not, in turn, substituted further.
- cycloalkyl moieties include, but are not limited to, optionally substituted cyclopropyl, optionally substituted cyclobutyl, optionally substituted cyclopentyl, optionally substituted cyclopentenyl, optionally substituted cyclohexyl, optionally substituted cyclohexylene, optionally substituted cycloheptyl, and the like or those which are specifically exemplified herein.
- heterocycloalkyl denotes a mono- or polycyclic alkyl ring, wherein one, two or three of the carbon ring atoms is replaced by a heteroatom such as N, O or S.
- hetero- cycloalkyl groups include, but are not limited to, morpholinyl, thiomorpholinyl, piperazinyl, piperidinyl, pyrrolidinyl, tetrahydropyranyl, tetrahydrofuranyl, 1,3-dioxanyl and the like.
- the heterocycloalkyl groups may be unsubstituted or substituted and attachment may be through their carbon frame or through their heteroatom(s) where appropriate, with the understanding that said substituents are not, in turn, substituted further.
- aryl refers to an aromatic mono- or polycarbocyclic radical of 6 to 12 carbon atoms having at least one aromatic ring.
- groups include, but are not limited to, phenyl, naphthyl, 1,2,3,4-tetrahydronaphthalene, 1 ,2-dihydronaphthalene, indanyl, lH-indenyl and the like.
- heteroaryl refers to an aromatic mono- or polycyclic radical of 5 to 12 atoms having at least one aromatic ring containing one, two, or three ring heteroatoms selected from N, O, and S, with the remaining ring atoms being C.
- groups include, but are not limited to, pyridine, thiazole and pyranyl.
- alkyl, lower alkyl, aryl and heteroaryl groups described above may be substituted independently with one, two, or three substituents, with the understanding that said substituents are not, in turn, substituted further.
- Substituents may include, for example, halogen, lower alkyl, -CF 3 , - S0 2 CH 3 , alkoxy, -C(0)CH 3 , -OH, -SCH 3 and -CH 2 CH 2 OH.
- alkoxy means alkyl-O-; and "alkoyl” means alkyl-CO-.
- Alkoxy substituent groups or alkoxy-containing substituent groups may be substituted by, for example, one or more alkyl groups, with the understanding that said substituents are not, in turn, substituted further.
- halogen means a fluorine, chlorine, bromine or iodine radical, preferably a fluorine, chlorine or bromine radical, and more preferably a fluorine or bromine radical.
- Compounds of formula I can have one or more asymmetric carbon atoms and can exist in the form of optically pure enantiomers, mixtures of enantiomers such as, for example, racemates, optically pure diastereoisomers, mixtures of diastereoisomers, diastereoisomeric racemates or mixtures of diastereoisomeric racemates.
- optically active forms can be obtained for example by resolution of the racemates, by asymmetric synthesis or asymmetric chromatography
- salts may be prepared from pharmaceutically acceptable non-toxic acids and bases including inorganic and organic acids and bases.
- acids include, for example, acetic, benzenesulfonic, benzoic, camphorsulfonic, citric, ethenesulfonic, dichloroacetic, formic, fumaric, gluconic, glutamic, hippuric, hydrobromic, hydrochloric, isethionic, lactic, maleic, malic, mandelic, methanesulfonic, mucic, nitric, oxalic, pamoic, pantothenic, phosphoric, succinic, sulfuric, tartaric, oxalic, /?-toluenesulfonic and the like.
- Acceptable base salts include alkali metal (e.g. sodium, potassium), alkaline earth metal (e.g. calcium, magnesium) and aluminum salts.
- alkali metal e.g. sodium, potassium
- alkaline earth metal e.g. calcium, magnesium
- aluminum salts e.g. aluminum salts.
- the compounds or compositions can thus be administered orally (e.g., buccal cavity), sublingually, parenterally (e.g., intramuscularly, intravenously, or subcutaneously), rectally (e.g., by suppositories or washings), transdermally (e.g., skin electroporation) or by inhalation (e.g., by aerosol), and in the form or solid, liquid or gaseous dosages, including tablets and suspensions.
- the administration can be conducted in a single unit dosage form with continuous therapy or in a single dose therapy ad libitum.
- the therapeutic composition can also be in the form of an oil emulsion or dispersion in conjunction with a lipophilic salt such as pamoic acid, or in the form of a biodegradable sustained-release composition for subcutaneous or intramuscular administration.
- compositions hereof can be solids, liquids or gases.
- the compositions can take the form of tablets, pills, capsules, suppositories, powders, enterically coated or other protected formulations (e.g. binding on ion-exchange resins or packaging in lipid-protein vesicles), sustained release formulations, solutions, suspensions, elixirs, aerosols, and the like.
- the carrier can be selected from the various oils including those of petroleum, animal, vegetable or synthetic origin, e.g., peanut oil, soybean oil, mineral oil, sesame oil, and the like.
- formulations for intravenous administration comprise sterile aqueous solutions of the active ingredient(s) which are prepared by dissolving solid active ingredient(s) in water to produce an aqueous solution, and rendering the solution sterile.
- Suitable pharmaceutical excipients include starch, cellulose, talc, glucose, lactose, talc, gelatin, malt, rice, flour, chalk, silica, magnesium stearate, sodium stearate, glycerol monostearate, sodium chloride, dried skim milk, glycerol, propylene glycol, water, ethanol, and the like.
- the compositions may be subjected to conventional pharmaceutical additives such as preservatives, stabilizing agents, wetting or emulsifying agents, salts for adjusting osmotic pressure, buffers and the like.
- Suitable pharmaceutical carriers and their formulation are described in Remington's Pharmaceutical Sciences by E. W. Martin.
- compositions will, in any event, contain an effective amount of the active compound together with a suitable carrier so as to prepare the proper dosage form for proper administration to the recipient.
- the dose of a compound of the present invention depends on a number of factors, such as, for example, the manner of administration, the age and the body weight of the subject, and the condition of the subject to be treated, and ultimately will be decided by the attending physician or veterinarian.
- Such an amount of the active compound as determined by the attending physician or veterinarian is referred to herein, and in the claims, as a "therapeutically effective amount”.
- the dose of a compound of the present invention is typically in the range of about 1 to about 1000 mg per day.
- the therapeutically effective amount is in an amount of from about 1 mg to about 500 mg per day.
- the present invention provides compounds having the general formula (I), wherein Ri is halogen, in particular fluorine; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl; and R 4 is hydrogen, halogen, cycloalkyl acetic acid, unsubstituted phenyl or phenyl substituted with a moiety selected from acetic acid, cyclo- propanecarboxylic acid and cyclopropanecarboxylic acid methyl ester, methanesulfonylamino- carbonyl-cyclopropane and cyclopropyltetrazole, or a pharmaceutically acceptable salt thereof.
- Ri is halogen, in particular fluorine
- R 2 is unsubstituted lower alkyl
- R 3 is unsubstituted lower alky
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl or lower alkyl substituted with phenyl substituted with trifluoromethyl; and R 4 is hydrogen, halogen, cycloalkyl acetic acid, unsubstituted phenyl or phenyl substituted with a moiety selected from acetic acid, cyclopropanecarboxylic acid and cyclopropanecarboxylic acid methyl ester, methanesulfonylaminocarbonyl-cyclopropane and cyclopropyltetrazole, or a pharmaceuti- cally acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl; and R 4 is halogen, in particular bromine, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl; and R 4 is cycloalkyl acetic acid, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl; and R 4 is phenyl substituted with a moiety selected from acetic acid, cyclopropanecarboxylic acid and cyclopropanecarboxylic acid methyl ester, methane- sulfonylaminocarbonyl-cyclopropane and cyclopropyltetrazole, or a pharmaceutically acceptable salt thereof.
- Ri is hydrogen or halogen
- R 2 is unsubstituted lower alkyl
- R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl; and R4 is phenyl substituted with acetic acid, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl; and R4 is phenyl substituted with cyclopropanecarboxylic acid, or a pharmaceutically acceptable salt thereof.
- Ri is hydrogen or halogen
- R 2 is unsubstituted lower alkyl
- R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl
- R4 is phenyl substituted with cyclopropanecarboxylic acid, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl; and R4 is phenyl substituted with cyclopropanecarboxylic acid, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is lower alkyl substituted with phenyl substituted with trifluoromethyl; and R4 is phenyl substituted with
- the present invention provides compounds having the general formula (I) wherein Ri is halogen; R 2 is unsubstituted lower alkyl; R 3 is lower alkyl substituted with unsubstituted phenyl; and R4 is phenyl substituted with cyclopropanecarboxylic acid, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is halogen; R 2 is unsubstituted lower alkyl in position 3; R 3 is lower alkyl substituted with unsubstituted phenyl; and R4 is phenyl substituted with cyclopropanecarboxylic acid, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is halogen; R 2 is unsubstituted lower alkyl; R 3 is lower alkyl substituted with unsubstituted phenyl; and R 4 is phenyl substituted in position 3 with cyclopropanecarboxylic acid, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl; and R 4 is phenyl substituted with methanesulfonylaminocarb- onyl-cyclopropane, or a pharmaceutically acceptable salt thereof.
- Ri is hydrogen or halogen
- R 2 is unsubstituted lower alkyl
- R 3 is unsubstituted lower alkyl, lower alkyl substituted with unsubstituted phenyl or lower alkyl substituted with phenyl substituted with trifluoromethyl
- R 4 is phenyl substituted with methanesulfonylaminocarb- onyl-cyclopropane, or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds having the general formula (I) wherein Ri is hydrogen or halogen; R 2 is unsubstituted lower alkyl; R 3 is lower alkyl substituted with phenyl substituted with trifluoromethyl; and R 4 is phenyl substituted with methanesulfonyl- aminocarbonyl-cyclopropane, or a pharmaceutically acceptable salt thereof.
- Particular compounds of formula (I) include the following:
- a compound of formula (I) for use as a therapeutically active substance.
- composition comprising a therapeutically effective amount of a compound of formula (I) and a therapeutically inert carrier.
- a compound according to formula (I) for the treatment or prophylaxis of pulmonary fibrosis is provided.
- a method for the treatment or prophylaxis of pulmonary fibrosis which method comprises the step of administering a therapeutically effective amount of a compound of formula (I) to a patient in need thereof.
- an invention as hereinbefore described provided is an invention as hereinbefore described.
- the compounds of general formula I in this invention may be derivatized at functional groups to provide derivatives which are capable of conversion back to the parent compound in vivo.
- Physiologically acceptable and metabolically labile derivatives, which are capable of producing the parent compounds of general formula I in vivo are also within the scope of this invention.
- the present invention is also directed to the administration of a therapeutically effective amount of a compound of formula I in combination or association with other drugs or active agents for the treatment of inflammatory or allergic diseases and disorders.
- the present invention relates to a method for the treatment and/or prevention of such diseases or disorders comprising administering to a human or animal simultaneously, sequentially, or separately, a therapeutically effective amount of a compound of formula I and another drug or active agent (such as another anti- inflammatory or anti-allergic drug or agent).
- Suitable other drugs or active agents may include, but are not limited to: Beta2-adrenergic agonists such as albuterol or salmeterol; corticosteroids such as dexamethasone or fluticasone; antihistamines such as loratidine; leukotriene antagonists such as montelukast or zafirlukast; anti-IgE antibody therapies such as omalizumab; anti-infectives such as fusidic acid (particularly for the treatment of atopic dermatitis); anti-fungals such as clotrimazole (particularly for the treatment of atopic dermatitis); immunosuppressants such as tacrolimus and pimecrolimus; other antagonists of PGD2 acting at other receptors such as DP antagonists; inhibitors of phosphodiesterase type 4 such as cilomilast; drugs that modulate cytokine production such as inhibitors of TNF
- the compounds of the present invention can be prepared by any conventional means. Suitable processes for synthesizing these compounds are provided in the examples. Generally,
- aryl- substituted N-alkyltriazole core is described in Scheme 1.
- deprotonation of arylacetylene 1 followed by reaction with chloroformate, such as ethyl chloroformate can provide aryl acetylene carboxylic acid ethyl ester 2, where Rl can be hydrogen, halogen or lower alkoxy groups.
- chloroformate such as ethyl chloroformate
- Rl can be hydrogen, halogen or lower alkoxy groups.
- the reaction of compound 2 with alkylazide 3 can provide two triazole isomers 4 and 5, where R2 can be lower alkyl groups, such as methyl group.
- Compound 3 and 4 can be separated from the reaction mixture, and their structure assignment can be confirmed from proton NOE experiment.
- the aryl- substituted triazole carboxylic acid ester 11 can be hydro- lyzed under basic condition to give the corresponding carboxylic acid 12, where Rl can be H, halogen and lower alkoxy groups, and R2 can be lower alkyl groups, such as methyl or ethyl groups.
- Compound 12 can be converted to the corresponding carbamate 13 through Curtis reaction in the presence of diphenylphosporylazide (DPP A), substituted alcohol, and base, such as triethylamine (TEA), where R3 can be alkyl group or aryl-substituted alkyl groups.
- DPP A diphenylphosporylazide
- TAA triethylamine
- Coupling of compound 13 with aryl-substituted boronic acid pinacol ester 14 under Suzuki aryl-aryl coupling conditions catalyzed by palladium catalyst can provide the biaryl intermediate 15, where R4 and R5 can be hydrogen, lower alkyl groups, such as methyl group. R4 and R5 in boronate 14 can also be connected to form a ring, such as 3-membered, 4-membered or 5- membered carbocyclic ring, R7 can be hydrogen or halogen, such as fluorine. Hydrolysis of compound 15 under basic conditions can provide the desired carboxylic acid 16.
- the cycloalkylalcohol such as 4-hydroxycyclohexylacetic acid ethyl ester 17
- the cycloalkylalcohol such as 4-hydroxycyclohexylacetic acid ethyl ester 17
- the cycloalkyliodide 18 can be converted to the corresponding cycloalkylzinc halide, which can be coupled to aryl halide 21 under Neigishi coupling conditions to provide compound 19, where Rl and R2 are defined in Scheme 3.
- carboxylic acid 12 can be converted to the corresponding benzyl ester 21 in the presence of benzyl bromide and base.
- compound 21 can be coupled with cyclic amine 22 in the presence of palladium catalyst to give the desired coupling product 23.
- R4 and R5 in compound 22 can be hydrogen, and R4 and R5 can be connected to form a ring such as a 3-membered ring.
- the cyclic amine 22 can be prepared according to the literature procedure (WO2008/053194). Hydrogenation of 23 followed by Curtis rearrangement reaction can lead to the desired carbamate 24, which can be further hydro lyzed to form the desired carboxylic acid 25.
- phenylacetic acid derivative 26 can be converted to its acyl chloride 27 by reacting with thionyl chloride, which can be further converted to its corresponding acylsulfonamide 28 in the presence of methanesulfonamide and base.
- the arylbromide 28 can be converted to the corresponding pinacol boronate 29, which can be coupled with compound 13 to provide the desired N-acylsulfonamide 30.
- the compounds of the present invention can be prepared using appropriate starting materials according to the methods described generally herein and/or by methods available to one of ordinary skill in the art.
- DPPA diphenylphosphorylazide
- DPPF l,l'-bis(diphenylphos- phino)ferrocene
- S-Phos dicyclohexyl(2',6'-dimethoxy[l, -biphenyl]-2-yl)-phosphine
- X-Phos dicyciohexyi[2',4',6'-tris(l -methyiethyl)[ 1 , 1 '-biphenyi]-2-yi]-phosphine
- DBA dibenzylidine- acetone
- DMF dimethylformamide
- LiHMDS lithium bis(trimethylsilyl)amide
- TEA triethyl- amine
- DCM dichloromethane
- THF tetrahydrofuran
- TLC thin layer chromatography.
- Step 1 preparation of (4-bromo-phenyl)-propionic acid ethyl ester
- Step 3a Preparation of 5-(4-bromo-phenyl)-3-methyl-3H-[l, 2, 3] triazole-4-carboxylic acid ethyl ester
- Step 3b Preparation of 5-(4-bromo-phenyl)-l-methyl-lH-[l, 2, 3] triazole-4-carboxylic acid ethyl ester
- Step 4a Preparation of 5-(4-bromo-phenyl)-3-methyl-3H-[l, 2, 3] triazole-4-carboxylic acid
- Step 4b Preparation of 5-(4-bromo-phenyl)-l-methyl-lH-[l, 2, 3] triazole-4-carboxylic acid
- Step 5 Preparation of [5-(4-Bromo-phenyl)-3-methyl-3H-[l,2,3]triazol-4-yl]-carbamic acid (R)-l-phenyl-ethyl ester
- Deionized water (1 mL) was added and the mixture was degassed with argon for 2 minutes. The mixture was sealed and stirred at 100 °C for 2 hrs. The mixture was extracted with ethyl acetate and water, washed with brine and dried.
- Degassed water (2 mL) was added and the mixture was degassed with argon and then sealed. The mixture was stirred at 95°C for 5 firs until all starting material was consumed. The mixture was extracted with ethyl acetate and water. The organic layer was washed with brine and dried.
- the first fraction gave l-(4'- ⁇ l-methyl-5-[(S)-l-(3- trifluoromethyl-phenyl)-ethoxycarbonylamino] - 1 H- [ 1 ,2,3 Jtriazo 1-4-yl ⁇ -biphenyl-4-yl)- cyclopropanecarboxylic acid (158 mg) as a white solid.
- This compound was prepared using the same method as described for the preparation of l- ⁇ 4'-[l- methyl-5-((R)- 1 -phenyl-ethoxycarbonylamino)- 1 ⁇ -[ 1 ,2,3]triazol-4-yl]-biphenyl-4-yl ⁇ -cyclo- propanecarboxylic acid in Example 2, except that 5-(4-bromo-phenyl)-l-methyl-lH-[l,2,3]tri- azole-4-carboxylic acid (from step 4b in Example 1) was used.
- a 350 mL sealed cap vessel was charged with l-(3-bromophenyl)cyclopropanecarboxylic acid ethyl ester (3.56 g, 13.2 mmol), 4,4,4',4',5,5,5',5'-octamethyl-2,2'-bi(l,3,2-dioxaborolane) (4.03 g, 15.9 mmol), and potassium acetate (2.6 g, 26.5 mmol) and then 1,4-Dioxane (40 mL) was added to give a white suspension.
- the resulting light brown suspension was disconnected from the nitrogen line and the reaction mixture was heated to 105 °C and the progress of the reaction was followed by TLC analysis and it was completed after 1 h at this temperature. Then, it was cooled to room temperature and diluted with water and ethyl acetate. The two layers were separated and the aqueous layer was extracted with ethyl acetate (50 mL). The combined organic layer was washed with brine solution and dried over anhydrous MgSC ⁇ . Filtration and concentration gave the crude compound which was purified using an ISCO (40 g) column chro- matography eluting with 0-70% ethyl acetate in hexanes.
- ISCO 40 g
- Step 1 Preparation of (4-bromo-2-fluoro-phenyl)-propynoic acid ethyl ester
- Step 2 Preparation of 5-(4-bromo-2-fluoro-phenyl)-3-trimethylsilanylmethyl-3H- [l,2,3]triazole-4-carboxylic acid ethyl ester
- ethyl 3-(4-bromo-2-fluorophenyl)propiolate (1.27 g, 4.68 mmol)
- (azidomethyl)trimethylsilane (2.42 g, 2.78 mL, 18.7 mmol, Eq: 4) were combined with benzene (3.5 mL) to give a light yellow solution.
- the reaction mixture was heated to 90 °C and stirred for 4 h.
- Step 3 Preparation of 5-(4-bromo-2-fluoro-phenyl)-3-methyl-3H-[l,2,3]triazole-4- carboxylic acid ethyl ester
- Step 5 Preparation of [5-(4-bromo-2-fluoro-phenyl)-3-methyl-3H-[l,2,3]triazole-4-yl]- carbamic acid (R)-l-phenyl ethyl ester
- 5-(4-bromo-2-fluoro-phenyl)-3-methyl-3H-[l,2,3]triazole-4-carboxylic acid 102 mg, 340 ⁇
- (R)-l-phenylethanol 83.0 mg, 82.1 ⁇ , 680 ⁇ , Eq: 2
- TEA 86.0 mg, 118 ⁇ , 850 ⁇ mol, Eq: 2.5
- Step 6 Preparation of l- ⁇ 3'-fluoro-4'-[l-methyl-5-((R)-l- phenyl-ethoxycarbonylamino)- lH-[l,2,3]triazole-4-yl]-biphenyl-4-yl ⁇ -cyclopropanecarboxylic acid methyl ester
- Step 1 Preparation of N-[l-(4-bromo-phenyl)-cyclopropanecarbonyl]- methanesulfonamide
- Step 2 Preparation of N- ⁇ l-[4-(4,4,5,5-tetramethyl-[l,3,2]dioxaborolan-2-yl)-phenyl]- cyclopropanecarbonyl ⁇ -methanesulfonamide
- Step 3 Preparation of ⁇ 5-[4'-(l-methanesulfonylaminocarbonyl-cyclopropyl)-biphenyl-4- yl]-3-methyl-3H-[l,2,3]triazol-4-yl ⁇ -carbamic acid (R)-l-phenyl-ethyl ester
- [5-(4-bromo-phenyl)-3-methyl-3H-[l,2,3]triazol-4-yl]-carbamic acid (R)-l- phenyl-ethyl ester Example 1, 110.3 mg, 275 ⁇
- N- ⁇ l-[4-(4,4,5,5-tetramethyl-[l,3,2]di- oxaborolan-2-yl)-phenyl]-cyclopropanecarbonyl ⁇ -methanesulfonamide (112 mg, 307 ⁇ )
- DPPF 38 mg, 68.5 ⁇
- the reaction was diluted with ethyl acetate (75 mL) and 0.1 M HC1 (100 mL). The layers were separated. The aqueous layer was extracted with ethyl acetate (75 mL). The organic layers were washed with brine, dried over MgS0 4 , filtered, concentrated, and dried from DCM/hexanes to give a crude material (311 mg). The crude material was dissolved in minimal DCM and purified by flash chromatography (silica gel, 24 g Redisep, 30 mL/min, 0% to 100% EtOAc in hexanes, 0.5 %> AcOH).
- Step 1 Preparation of 5-(4-bromophenyl)-3-methyl-3H-[l,2,3]triazole-4-carboxylic acid benzyl ester
- Step 3 Preparation of 5-[4-(4-ethoxycarbonylmethyl-cyclohexyl)-phenyl]-3-methyl-3H- [l,2,3]triazole-4-carboxylic acid benzyl ester
- Step 5 Preparation of (4- ⁇ 4-[l-methyl-5-((R)-l-phenyl-ethoxycarbonylamino)-lH- [l,2,3]triazol-4-yl]-phenyl ⁇ -cyclohexyl)-acetic acid ethyl ester
- Step 6 Preparation of (4- ⁇ 4-[l-methyl-5-((R)-l-phenyl-ethoxycarbonylamino)-lH- [ 1 ,2,3] triazol-4-yl] -phenyl ⁇ -cyclohexyl)-acetic acid
- the ChemiScreen Calcium-optimized stable cell line containing the human recombinant LPA1 Lysophospho lipid receptor was purchased from Chemicon International, Inc./Millipore. The cells were cultured in DMEM-high glucose supplemented with 10% fetal bovine serum, 2mM glutamine, lOOU/mL penicillin/100 ⁇ g/mL streptomycin, IX nonessential amino acids, lOmM HEPES and 0.25mg/mL Geneticin. Cells were harvested with trypsin-EDTA and counted using ViaCount reagent. The cell suspension volume was adjusted to 2.0 x 10 5 cells/mL with complete growth media. Aliquots of 50 were dispensed into 384 well black/clear tissue culture treated plates (BD) and the microplates were placed in a 37°C incubator overnight. The following day plates were used in the assay.
- BD black/clear tissue culture treated plates
- Loading Buffer FLIPR Calcium-4, Molecular Devices
- Loading Buffer FLIPR Calcium-4, Molecular Devices
- Loading Buffer was prepared by dissolving the contents of one bottle into 100 mL Hank's Balanced Salt Solution containing 20 mM HEPES and 2.5 mM probenecid. Plates were loaded onto Biotek plate washer and growth media was removed and replaced with 20 of Hank's Balanced Salt Solution con- taining 20 mM HEPES and 2.5 mM probenecid, followed by 25 ⁇ ⁇ of Loading Buffer. The plates were then incubated for 30 minutes at 37°C.
- test compounds were prepared by adding 90 ⁇ , of HBSS/20 mM
- both the cell and "assay" plates were brought to the FLIPR and 20 of the diluted compounds were transferred to the cell plates by the FLIPR. Compound addition was monitored by the FLIPR to detect any agonist activity of the compounds. Plates were then incubated for 30 minutes at room temperature protected from light. After the incubation, plates were returned to the FLIPR and 20 of 4.5X concentrated agonist was added to the cell plates. During the assay, fluorescence readings were taken simultaneously from all 384 wells of the cell plate every 1.5 seconds. Five readings were taken to establish a stable baseline, then 20 of sample was rapidly (30 ⁇ , /sec) and simultaneously added to each well of the cell plate.
- the fluorescence was continuously monitored before, during and after sample addition for a total elapsed time of 100 seconds. Responses (increase in peak fluorescence) in each well following agonist addition was determined. The initial fluorescence reading from each well, prior to ligand stimulation, was used as zero baseline value for the data from that well. The responses were expressed as % inhibition of the buffer control.
- the antagonist activities of representative compounds of the invention are provided in Table 1 below:
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Priority Applications (18)
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CA2869541A CA2869541A1 (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as lpar antagonists |
MX2014014710A MX2014014710A (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as lpar antagonists. |
IN9348DEN2014 IN2014DN09348A (en) | 2012-06-20 | 2013-06-17 | |
KR1020147035768A KR20150021057A (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as lpar antagonists |
CN201380032285.0A CN104411692A (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as lpar antagonists |
JP2015517704A JP2015520202A (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as LPAR antagonists |
SG11201407220YA SG11201407220YA (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as lpar antagonists |
EP13729330.4A EP2864300A1 (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as lpar antagonists |
EA201492285A EA201492285A1 (en) | 2012-06-20 | 2013-06-17 | COMPOUNDS OF N-ALKYLTRIAZOLE AS ANTAGONISTS OF LYSOPHOSPHATID ACID (LPAR) |
BR112014030685A BR112014030685A2 (en) | 2012-06-20 | 2013-06-17 | n-alkyltriazole compounds as lpar antagonists |
UAA201500428A UA109868C2 (en) | 2012-06-20 | 2013-06-17 | N -alkyltriazole compounds asr |
AU2013279512A AU2013279512A1 (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as LPAR antagonists |
MA37764A MA37764A1 (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds used as antagonists of lpar |
US14/401,009 US9321738B2 (en) | 2012-06-20 | 2013-06-17 | N-alkyltriazole compounds as LPAR antagonists |
CR20140525A CR20140525A (en) | 2012-06-20 | 2014-11-17 | N-alkyltriazole compounds as LPAR antagonists |
IL236088A IL236088A0 (en) | 2012-06-20 | 2014-12-04 | N-alkyltriazole compounds as lpar antagonists |
PH12014502789A PH12014502789A1 (en) | 2012-06-20 | 2014-12-15 | N-alkyltriazole compounds as lpar antagonists |
HK15106927.8A HK1206342A1 (en) | 2012-06-20 | 2015-07-21 | N-alkyltriazole compounds as lpar antagonists lpar n- |
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EP (1) | EP2864300A1 (en) |
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CN (1) | CN104411692A (en) |
AU (1) | AU2013279512A1 (en) |
BR (1) | BR112014030685A2 (en) |
CA (1) | CA2869541A1 (en) |
CL (1) | CL2014003243A1 (en) |
CO (1) | CO7131358A2 (en) |
CR (1) | CR20140525A (en) |
EA (1) | EA201492285A1 (en) |
HK (1) | HK1206342A1 (en) |
IL (1) | IL236088A0 (en) |
IN (1) | IN2014DN09348A (en) |
MA (1) | MA37764A1 (en) |
MX (1) | MX2014014710A (en) |
PE (1) | PE20142448A1 (en) |
PH (1) | PH12014502789A1 (en) |
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CL2014003243A1 (en) | 2015-03-20 |
US9321738B2 (en) | 2016-04-26 |
CO7131358A2 (en) | 2014-12-01 |
AU2013279512A1 (en) | 2014-10-16 |
PH12014502789A1 (en) | 2015-02-09 |
MX2014014710A (en) | 2015-03-04 |
SG11201407220YA (en) | 2014-12-30 |
IL236088A0 (en) | 2015-02-01 |
IN2014DN09348A (en) | 2015-07-17 |
EP2864300A1 (en) | 2015-04-29 |
BR112014030685A2 (en) | 2017-06-27 |
PE20142448A1 (en) | 2015-01-28 |
KR20150021057A (en) | 2015-02-27 |
JP2015520202A (en) | 2015-07-16 |
MA37764A1 (en) | 2016-01-29 |
CR20140525A (en) | 2015-01-12 |
UA109868C2 (en) | 2015-10-12 |
CN104411692A (en) | 2015-03-11 |
US20150133511A1 (en) | 2015-05-14 |
EA201492285A1 (en) | 2015-04-30 |
HK1206342A1 (en) | 2016-01-08 |
CA2869541A1 (en) | 2013-12-27 |
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