WO2013147161A1 - ニペコチン酸誘導体及びその医薬用途 - Google Patents
ニペコチン酸誘導体及びその医薬用途 Download PDFInfo
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- WO2013147161A1 WO2013147161A1 PCT/JP2013/059534 JP2013059534W WO2013147161A1 WO 2013147161 A1 WO2013147161 A1 WO 2013147161A1 JP 2013059534 W JP2013059534 W JP 2013059534W WO 2013147161 A1 WO2013147161 A1 WO 2013147161A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D211/60—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P13/00—Drugs for disorders of the urinary system
- A61P13/12—Drugs for disorders of the urinary system of the kidneys
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/12—Antihypertensives
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/06—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
Definitions
- the present invention relates to a nipecotic acid derivative and its pharmaceutical use.
- kidney disease As the number of patients with kidney disease increases, the number of dialysis patients continues to increase all over the world, and the number has increased more than 10 times over the past 30 years. Under these circumstances, a new disease concept called chronic kidney disease was proposed in 2002, and a wide range of kidney diseases ranging from a state of renal function that has not led to renal failure to the end stage of renal failure has been proposed. It came to call it a disease (nonpatent literature 1).
- Non-patent Document 2 angiotensin II antihypertensive agents such as angiotensin II receptor antagonist and angiotensin converting enzyme inhibitor are prescribed for patients with chronic kidney disease.
- angiotensin II antihypertensive agents such as angiotensin II receptor antagonist and angiotensin converting enzyme inhibitor.
- pulmonary hypertension is a general term for pathological conditions in which an increase in pulmonary arterial pressure is observed, and it is known that exercise tolerance is significantly reduced, most of which is progressive and prognosis is poor.
- the pulmonary artery pressure is maintained lower than the systemic blood pressure, but in patients with pulmonary hypertension, the average pulmonary artery pressure is 25 mmHg or more at rest (30 mmHg or more during exercise), and this state persists for a long time. This induces right ventricular hypertrophy and right heart failure, and in the worst case, death.
- pulmonary vasospasm is involved as one of the causes of pulmonary hypertension
- short-term pulmonary vasodilatory effects such as prostacyclin derivatives, endothelin receptor antagonists and phosphodiesterase inhibitors are used for the treatment of pulmonary hypertension.
- the medicine which shows is used (nonpatent literature 3).
- EETs epoxyeicosatrienoic acid
- sEH soluble epoxide hydrolase
- DHETs dihydroxyeicosatrienoic acids
- DHETs soluble epoxide hydrolase inhibitors
- Non-patent Document 8 and Patent Documents 1 and 2 a compound having an sEH inhibitory activity has been reported, and there are examples in which it is suggested that it is useful for the treatment of chronic kidney disease and pulmonary hypertension (Non-patent Document 8 and Patent Documents 1 and 2). ), Even a compound having sEH inhibitory activity has been reported to show no therapeutic effect on a spontaneous hypertensive rat model (Non-Patent Documents 9 to 11). None of the compounds having sEH inhibitory activity reported so far has a nipecotic acid diamide structure.
- Non-Patent Documents 10 to 12 Non-Patent Documents 10 to 12. Therefore, for chronic renal failure and pulmonary hypertension, At present, it has not been easy to find sEH inhibitors exhibiting therapeutic effects.
- an object of the present invention is to provide a compound exhibiting sEH inhibitory activity and to provide a medicament that exhibits therapeutic and preventive effects on chronic kidney disease and pulmonary hypertension based on the inhibition of sEH.
- a novel nipecotic acid derivative or a pharmacologically acceptable salt thereof exhibits a strong sEH inhibitory activity and chronic kidney disease based on its action.
- the present inventors have found that it exhibits excellent therapeutic and preventive effects on pulmonary hypertension, and has completed the present invention.
- the present invention provides a nipecotic acid derivative represented by the following general formula (I) or a pharmacologically acceptable salt thereof.
- R 1 represents a hydroxyl group, a cyano group, an alkyl group or alkyloxy group having 1 to 6 carbon atoms, a cycloalkyl group or cycloalkyloxy group having 3 to 6 carbon atoms, or an alkyloxyalkyl group having 2 to 7 carbon atoms.
- a cycloalkylalkyl group having 4 to 7 carbon atoms (the alkyl group, alkyloxy group, cycloalkyl group, cycloalkyloxy group, alkyloxyalkyl group and cycloalkylalkyl group have 1 to 3 hydrogen atoms, Each independently may be substituted with a halogen atom, a hydroxyl group, a cyano group, —SR 6 , —S ( ⁇ O) —R 6 or —S ( ⁇ O) 2 R 6 ), —N (R 6 ) C ( ⁇ O) R 7 , —N (R 6 ) S ( ⁇ O) 2 R 7 , —C ( ⁇ O) N (R 6 ) R 7 or a heteroaryl group having 5 ring atoms, R 2 and R 3 are Independently, a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkyloxyalkyl group having 2 to 7 carbon atoms (the alkyl group
- R 2 and R 3 each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, or together represent — (CH 2 ) 1 —.
- R 4 represents a substituent at the 2-position on the benzene ring
- R 5 represents a substituent at the 4-position on the benzene ring.
- R 1 represents —N (R 6 ) C ( ⁇ O) R 7 or —N (R 6 ) S ( ⁇ O) 2 R 7
- R 4 represents a halogen atom.
- R 5 represents a halogen atom, a cyano group, or an alkyl group or alkyloxy group having 1 to 6 carbon atoms
- R 6 represents a hydrogen atom.
- R 1 represents —N (H) C ( ⁇ O) CH 2 CH 3
- R 2 and R 3 together represent — (CH 2 ) 3 —
- R 4 represents It is particularly preferred that it represents —OCF 3 and R 5 represents a cyano group.
- the present invention also provides a medicament containing the above nipecotic acid derivative or a pharmacologically acceptable salt thereof as an active ingredient.
- This medicament is preferably an sEH inhibitor, and more preferably a therapeutic or prophylactic agent for chronic kidney disease or pulmonary hypertension.
- nipecotic acid derivative of the present invention or a pharmacologically acceptable salt thereof exhibits a strong sEH inhibitory activity, and exhibits an excellent therapeutic or preventive effect on chronic kidney disease and pulmonary hypertension based on its action. Therefore, a prescription with reduced side effects commensurate with the patient's symptoms can be expected.
- the nipecotic acid derivative of the present invention or a pharmacologically acceptable salt thereof is characterized by being represented by the following general formula (I).
- R 1 represents a hydroxyl group, a cyano group, an alkyl group or alkyloxy group having 1 to 6 carbon atoms, a cycloalkyl group or cycloalkyloxy group having 3 to 6 carbon atoms, or an alkyloxyalkyl group having 2 to 7 carbon atoms.
- a cycloalkylalkyl group having 4 to 7 carbon atoms (the alkyl group, alkyloxy group, cycloalkyl group, cycloalkyloxy group, alkyloxyalkyl group and cycloalkylalkyl group have 1 to 3 hydrogen atoms, Each independently may be substituted with a halogen atom, a hydroxyl group, a cyano group, —SR 6 , —S ( ⁇ O) —R 6 or —S ( ⁇ O) 2 R 6 ), —N (R 6 ) C ( ⁇ O) R 7 , —N (R 6 ) S ( ⁇ O) 2 R 7 , —C ( ⁇ O) N (R 6 ) R 7 or a heteroaryl group having 5 ring atoms, R 2 and R 3 are Independently, a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkyloxyalkyl group having 2 to 7 carbon atoms (the alkyl group
- C1-C6 alkyl group means a straight-chain saturated hydrocarbon group having 1 to 6 carbon atoms or a branched saturated hydrocarbon group having 3 to 6 carbon atoms, such as a methyl group, Ethyl group, 1-propyl group, 2-propyl group, 1-butyl group, 2-butyl group, 2-methyl-2-propyl group (tert-butyl group), 2-methyl-1-propyl group, 2,2 -Dimethyl-1-propyl group, 1-pentyl group, 2-pentyl group or 3-pentyl group.
- C 1-6 alkyloxy group means a group in which the above C 1-6 alkyl group is bonded to an oxygen atom, such as a methoxy group, an ethoxy group, a 1-propyloxy group, -Propyloxy group, 1-butyloxy group or 2-butyloxy group.
- C3-C6 cycloalkyl group means a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, or a cyclohexyl group.
- C3-C6 cycloalkyloxy group means a cyclopropyloxy group, a cyclobutyloxy group, a cyclopentyloxy group, or a cyclohexyloxy group.
- C2-C7 alkyloxyalkyl group means a group having 2 to 7 carbon atoms in which one hydrogen atom of the alkyl group is substituted with an alkyloxy group.
- cycloalkyl alkyl group having 4 to 7 carbon atoms means a group having 4 to 7 carbon atoms in which one hydrogen atom of the alkyl group is substituted with a cycloalkyl group. Examples thereof include a methyl group, a cyclopropylethyl group, a cyclopropylpropyl group, a cyclobutylmethyl group, a cyclopentylmethyl group, and a cyclohexylmethyl group.
- Halogen atom means a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.
- heteroaryl group having 5 ring atoms means that the number of ring atoms is 5 including 1 to 4 identical or different atoms selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom. And includes, for example, pyrrolyl group, imidazolyl group, pyrazolyl group, triazolyl group, oxazolyl group, isoxazolyl group, furanyl group and thiazolyl group.
- R 1 may be —N (R 6 ) C ( ⁇ O) R 7 or —N (R 6 ) S ( ⁇ O) 2 R 7
- R 1 is acetylamidyl, propionamidyl group or methanesulfonylamidyl group.
- R 2 and R 3 are each independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, or preferably together, they are — (CH 2 ) 1 —, and each independently , A hydrogen atom or an alkyl group having 1 to 3 carbon atoms (in which the alkyl group, one hydrogen atom may be substituted with a hydroxyl group), or together, — (CH 2 ) 2 — Or — (CH 2 ) 3 — is more preferable, and each independently represents a hydrogen atom, a methyl group or a 2-hydroxy-2-propyl group, or together, — (CH 2 ) 2 -or-(CH 2 ) 3- is more preferred, but they are not simultaneously hydrogen atoms.
- R 4 is preferably a substituent at the 2-position on the benzene ring.
- R 4 is preferably a halogen atom, an alkyl group having 1 to 6 carbon atoms or an alkyloxy group, more preferably a halogen atom or an alkyloxy group, and further preferably an alkyloxy group.
- R 5 is preferably a substituent at the 4-position on the benzene ring.
- R 5 is preferably a halogen atom, a cyano group, an alkyl group having 1 to 6 carbon atoms, or an alkyloxy group having 1 to 6 carbon atoms, and more preferably a halogen atom or a cyano group.
- R 6 is preferably a hydrogen atom
- R 7 is preferably a methyl group or an ethyl group.
- L is preferably 2 or 3
- m is preferably 2
- n is preferably 2.
- nipecotic acid derivative (I) has at least one asymmetric carbon atom and has optical isomers and diastereomers.
- the nipecotic acid derivative (I) includes not only a single isomer but also a racemate and a mixture of diastereomers.
- all rotamers are included.
- Examples of the pharmacologically acceptable salt of the nipecotic acid derivative (I) include, for example, hydrochloride, trifluoroacetate, sulfate, nitrate, hydrobromide, hydroiodide or methane as an acid addition salt.
- Examples of the sulfonate include hydrochloride, sulfate, hydrobromide, hydroiodide, and methanesulfonate.
- the starting materials and reagents used for the production of the nipecotic acid derivative (I) may be commercially available products or may be synthesized by known methods.
- the nipecotic acid derivative (Ia) can be produced, for example, by a condensation reaction of an amine derivative (II) and a carboxylic acid derivative (III) in the presence of a base and a condensing agent as shown in the following scheme 1.
- Scheme 1 [Wherein R 1 ′ represents a hydroxyl group, a cyano group, an alkyl group or alkyloxy group having 1 to 6 carbon atoms, a cycloalkyl group or cycloalkyloxy group having 3 to 6 carbon atoms, or an alkyloxy group having 2 to 7 carbon atoms.
- alkyl group, a cycloalkylalkyl group having 4 to 7 carbon atoms (the alkyl group, alkyloxy group, cycloalkyl group, cycloalkyloxy group, alkyloxyalkyl group and cycloalkylalkyl group have 1 to 3 hydrogen atoms)
- R 2 to R 6 are the same as defined above. ]
- condensing agent used in the condensation reaction examples include cyclohexylcarbodiimide, N-ethyl-N′-3-dimethylaminopropylcarbodiimide hydrochloride, benzotriazol-1-yloxy-trisdimethylaminophosphonium salt (BOP reagent), 1- [ Bis (dimethylamino) methylene] -1H-benzotriazolium-3-oxide hexafluorophosphate (HBTU) or O- (7-azabenzotriazol-1-yl) tetramethyluronium hexafluorophosphate HATU), and HATU is preferred.
- the equivalent of the condensing agent is preferably 1 to 10 equivalents, and more preferably 1 to 3 equivalents.
- Examples of the solvent used in the condensation reaction include N, N-dimethylformamide (hereinafter referred to as DMF), tetrahydrofuran (hereinafter referred to as THF), dichloromethane, chloroform, diethyl ether or dimethyl ether, with DMF or THF being preferred, and DMF being More preferred.
- DMF N, N-dimethylformamide
- THF tetrahydrofuran
- dichloromethane dichloromethane
- chloroform chloroform
- diethyl ether or dimethyl ether dimethyl ether
- Examples of the base used in the condensation reaction include organic bases such as diisopropylethylamine (hereinafter DIPEA), triethylamine (hereinafter TEA), pyridine or N-methylmorpholine, or organic acid salts such as potassium carbonate, sodium carbonate or sodium bicarbonate. DIPEA or TEA is preferable.
- the equivalent of the base is preferably 1 to 100 equivalents and more preferably 1 to 10 equivalents with respect to the amine derivative (II).
- the equivalent amount of the carboxylic acid derivative (III) used in the condensation reaction is preferably 0.1 to 100 equivalents, more preferably 0.1 to 10 equivalents, and even more preferably 0.8 to 2 equivalents with respect to the amine derivative (II). .
- the reaction temperature of the condensation reaction is preferably ⁇ 50 to 100 ° C., more preferably 0 to 50 ° C., and further preferably 0 to 30 ° C.
- the reaction time for the condensation reaction is preferably 1 minute to 48 hours, more preferably 1 minute to 24 hours, and even more preferably 10 minutes to 24 hours.
- the concentration of the amine derivative (II) at the start of the condensation reaction is preferably 0.01 to 100M, more preferably 0.01 to 10M, and even more preferably 0.1 to 10M.
- nipecotic acid derivative (Ib) in which R 1 is —N (H) C ( ⁇ O) R 7 is represented by, for example, an amine derivative (IV) in the presence of a base as shown in Scheme 2 below.
- an acid chloride derivative (V) or a condensation reaction of an amine derivative (IV) and a carboxylic acid derivative (VI) in the presence of a base and a condensing agent. Scheme 2 [Wherein R 2 to R 5 and R 7 are the same as defined above]. ]
- Examples of the solvent used for the condensation reaction with the acid chloride derivative (V) include dichloromethane, 1,2-dichloroethane, acetonitrile, DMF, THF, dioxane, diethyl ether or 1,2-dimethoxyethane. 1,2-dichloroethane, acetonitrile or THF is preferred, and dichloromethane or 1,2-dichloroethane is more preferred.
- the equivalent amount of the acid chloride (V) used in the condensation reaction with the acid chloride derivative (V) is preferably 0.1 to 10 equivalents, more preferably 1 to 3 equivalents, relative to the amine derivative (IV). 5 equivalents are more preferred.
- Examples of the base used for the condensation reaction with the acid chloride derivative (V) include organic bases such as DIPEA, TEA, pyridine and N-methylmorpholine, with DIPEA or TEA being preferred.
- the equivalent of the base is preferably 1 to 100 equivalents and more preferably 1 to 10 equivalents with respect to the amine derivative (IV).
- the reaction temperature of the condensation reaction with the acid chloride derivative (V) is preferably ⁇ 50 to 100 ° C., more preferably ⁇ 20 to 60 ° C., and further preferably 0 to 40 ° C.
- the reaction time for the condensation reaction with acid chloride (V) is preferably 30 minutes to 24 hours, more preferably 30 minutes to 12 hours, and even more preferably 30 minutes to 8 hours.
- the concentration at the start of the reaction of the amine derivative (IV) in the condensation reaction with the acid chloride derivative (V) is preferably 0.01 to 100M, more preferably 0.01 to 10M, and further preferably 0.1 to 10M.
- nipecotic acid derivative (Ic) in which R 1 is —N (H) S ( ⁇ O) 2 R 7 can be synthesized with an amine derivative (IV) in the presence of a base, for example, as shown in Scheme 3 below. It can be produced by a sulfonamidation reaction with a sulfonic acid chloride derivative (VII). (Scheme 3) [Wherein R 2 to R 5 and R 7 are the same as defined above]. ]
- Examples of the solvent used in the sulfonamidation reaction include dichloromethane, 1,2-dichloroethane, acetonitrile, DMF, THF, dioxane, diethyl ether, or 1,2-dimethoxyethane, but dichloromethane, 1,2-dichloroethane, Acetonitrile or THF is preferred, and dichloromethane or 1,2-dichloroethane is more preferred.
- the equivalent amount of the sulfonic acid chloride derivative (VII) used in the sulfonamidation reaction is preferably 0.1 to 10 equivalents, more preferably 1 to 3 equivalents, and further preferably 1 to 1.5 equivalents with respect to the amine derivative (IV). preferable.
- Examples of the base used in the sulfonamidation reaction include organic bases such as DIPEA, TEA, pyridine and N-methylmorpholine, with DIPEA or TEA being preferred.
- the equivalent of the base is preferably 1 to 100 equivalents and more preferably 1 to 10 equivalents with respect to the amine derivative (IV).
- the reaction temperature of the sulfonamidation reaction is preferably ⁇ 50 to 50 ° C., more preferably ⁇ 30 to 30 ° C., and further preferably ⁇ 20 to 20 ° C.
- the reaction time of the sulfonamidation reaction is preferably 30 minutes to 24 hours, more preferably 30 minutes to 12 hours, and further preferably 30 minutes to 8 hours.
- the concentration of the amine derivative (IV) at the start of the reaction in the sulfonamidation reaction is preferably 0.01 to 100M, more preferably 0.01 to 10M, and further preferably 0.1 to 10M.
- the amine derivative (IV) which is the starting material in the above-mentioned schemes 2 and 3 is, for example, after the condensation reaction between the amine derivative (II) and the carboxylic acid derivative (VIII) in the presence of a base, as shown in the following scheme 4.
- the deprotection reaction following the condensation reaction can be performed by a known method described in, for example, Protective Groups in Organic Synthesis 3rd Edition (Green et al., 1999, John Wiley & Sons, Inc.).
- the protecting group is a tert-butoxycarbonyl group
- the protecting group can be removed by treatment with a strong acid such as trifluoroacetic acid.
- the amine derivative (II) which is the starting material in the above-mentioned schemes 1 and 4 is, for example, as shown in the following scheme 5, in the presence of a base and a condensing agent, benzylamine derivative (IX), nipecotic acid derivative (X) and After the condensation reaction, a deprotection reaction for removing the protecting group can be used.
- Scheme 5 [Wherein R 4 , R 5 and R 8 are the same as defined above. ]
- the deprotection reaction can be carried out under the same conditions as in the method described in Scheme 4.
- the condensation reaction of Scheme 5 can also be performed in the presence of a base by converting the nipecotic acid derivative (X) into an acid chloride.
- Examples of the reagent for converting the nipecotic acid derivative (X) into acid chloride include oxalyl chloride and thionyl chloride, with oxalyl chloride being preferred.
- the equivalent amount of the reagent is preferably 1 to 10 equivalents, more preferably 1 to 1.5 equivalents, relative to the nipecotic acid derivative (X).
- Examples of the solvent used for converting the nipecotic acid derivative (X) into the acid chloride include dichloromethane, chloroform, THF, 1,2-dichloroethane, acetonitrile, 1,4-dioxane, and DMF, and dichloromethane, THF, or DMF.
- a mixed solvent thereof is preferable, and a mixed solvent of dichloromethane and DMF or a mixed solvent of THF and DMF is more preferable.
- the reaction temperature for converting the nipecotic acid derivative (X) to acid chloride is preferably -50 to 100 ° C, more preferably -30 to 30 ° C, and further preferably -20 to 0 ° C.
- the reaction time for converting the nipecotic acid derivative (X) to acid chloride is preferably 30 minutes to 24 hours, more preferably 30 minutes to 12 hours, and even more preferably 30 minutes to 2 hours.
- the concentration of the nipecotic acid derivative (X) at the start of the reaction when converting the nipecotic acid derivative (X) to acid chloride is preferably 0.01 to 100M, more preferably 0.01 to 10M, and more preferably 0.1 to 3M. Is more preferable.
- nipecotic acid derivative (I) obtained as described above, a pharmacologically acceptable salt thereof, or an intermediate, a raw material compound or a reagent used for the production of the nipecotic acid derivative (I) is necessary. Depending on the method, it may be isolated and purified by a method such as extraction, distillation, chromatography or recrystallization.
- the medicament of the present invention is characterized by containing the above-mentioned nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof as an active ingredient, and this medicament is preferably an sEH inhibitor. More preferably, it is a therapeutic or prophylactic agent for chronic kidney disease or pulmonary hypertension.
- SEH is an abbreviation for soluble epoxide hydrolase, which is a metabolic enzyme that catalyzes the hydrolysis of epoxide and converts it to the corresponding diol.
- the most known substrate of sEH is EETs, which is one of endothelial cell-derived hyperpolarizing factors, and sEH has an action of metabolizing EETs to DHETs and inactivating them.
- EETs is an abbreviation for Epoxyeicosatrienoic acids
- DHETs is an abbreviation for Dihydroxyeicosatrienoic acids. Examples of the EETs include 14,15-epoxyeicosatrienoic acid (hereinafter, 14,15-EET). Examples of DHETs include 14,15-dihydroxyeicosatrienoic acid (14,15-DHET).
- SEH inhibitory activity means an activity that inhibits the action of sEH. Therefore, the sEH inhibitory activity includes the activity of inhibiting the enzymatic reaction of sEH to catalyze the hydrolysis of EETs, which is one of sEH substrates.
- SEH inhibitor means a compound showing sEH inhibitory activity or a composition containing the compound as an active ingredient.
- the sEH inhibitory activity is, for example, that human sEH and its substrate EETs are reacted in the presence of an sEH inhibitor, and the amount of DHETs produced is compared with the amount of DHETs produced in the absence of the sEH inhibitor. Can be measured.
- a commercially available measurement kit Soluable Epoxide Hydrose Inhibitor Screening Assay Kit; Cayman
- the sEH inhibitory activity of the inhibitor can be measured.
- racemic 4-nitrophenyl-trans-2,3-epoxy-3-phenylpropyl carbonate was used as a substrate for sEH, and 4-nitrophenolate anion was used.
- the appearance of 6-methoxy-2-naphthaldehyde is measured using cyano (6-methoxynaphthalen-2-yl) methyl 2- (3-phenyloxiran-2-yl) acetate as a substrate for sEH.
- the sEH inhibitory activity of the sEH inhibitor can also be measured by measuring the appearance.
- EETs concentration, the DHETs concentration, or the EETs / DHETs ratio can be measured using, for example, a commercially available measurement kit (14,15-EET / DHET ELISA-Kit; Detroit R & D).
- chronic kidney disease means a disease defined by The National Kidney Foundation-Kidney Disease Outcomes Quality Initiative (K / DOQI). That is, (1) a disease having a renal disorder defined by a structural or functional abnormality of the kidney for 3 months or more regardless of the presence or absence of a decrease in glomerular filtration rate (hereinafter referred to as GFR) Or (2) refers to a disease with a GFR of less than 60 mL / min / 1.73 m 2 for 3 months or more, regardless of whether or not the kidney is damaged.
- GFR National Kidney Foundation-Kidney Disease Outcomes Quality Initiative
- Kidney disorders include abnormalities in urine findings such as proteinuria including hematuria or microalbuminuria, abnormalities in renal image findings such as hemi-renal or polycystic kidneys, and renal disorder markers detected by blood tests or urinalysis. Abnormalities are detected by abnormal findings by histopathological diagnosis of the kidney such as renal biopsy.
- GFR is recommended as an indicator of renal function.
- converted GFR obtained by calculation based on the sCre value and taking into account age and sex is used.
- serum Cys-C levels are also measured for evaluation of renal function.
- Inulin clearance or creatinine clearance is also used for evaluation of renal function.
- Globular nephritis is one of chronic kidney diseases, such as IgA nephropathy, minimal change nephrotic syndrome, focal segmental glomerulosclerosis, membranous nephropathy, membranoproliferative glomerulonephritis or Menstrual nephritis is mentioned.
- Diabetic nephropathy is also a chronic kidney disease, a condition that progresses due to metabolic abnormalities due to hyperglycemia. In diabetic nephropathy, abnormal urinary findings such as urine protein including microalbuminuria, Hypertension or hyperglycemia is observed.
- Renal failure means a condition or symptom where renal function is below 30% of normal. A state in which the function of the glomerulus is reduced to 60% or less is called renal failure, and if it progresses to less than 10%, it becomes end-stage renal failure requiring dialysis treatment. Renal failure includes acute renal failure and chronic renal failure. Chronic renal failure is one of chronic kidney diseases, and is considered as end-stage renal disease, which is the end-stage state of chronic kidney disease. Progression of glomerulonephritis or diabetic nephropathy leads to chronic renal failure. When it becomes chronic renal failure, the pathology is the same regardless of the original disease, and it progresses by the final common pathway (final common pathway), leading to end-stage renal failure. In renal failure, an increase in sCre value or an increase in serum Cys-C value is observed.
- “Pulmonary hypertension” is a condition in which an increase in pulmonary arterial pressure in which blood is sent from the heart to the lung is observed, the mean pulmonary artery pressure in a resting position is 25 mmHg or more, or pulmonary disease, sleep apnea syndrome and In alveolar hypoventilation syndrome, mean pulmonary artery pressure is 20 mmHg or more at rest (30 mmHg or more when exercising) (digest version, pulmonary hypertension treatment guideline (2006 revision), P2-P3.). In pulmonary hypertension, increased right ventricular systolic pressure, right ventricular hypertrophy, pulmonary hypertrophy, pulmonary artery thickening, cell proliferation or myocardial hypertrophy in the lung are observed.
- nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof on chronic kidney disease can be evaluated using an animal model that has artificially induced chronic kidney disease.
- an animal model for example, an anti-GBM antiserum-administered nephritis model (Kidney International, 2003, Vol. 64, p. 1241-1252, etc.) using mice and rats, kidney by 5/6 nephrectomy Failure model (Journal of the American Society of Nephrology, 2002, Vol. 13, p. 2909-2915, etc.) or streptozotocin-administered diabetic nephropathy model (International Journal of Molecular Medicine, Vol.
- Hypertension 1998, Vol. 32, p.778-785.
- Abnormalities in renal function can be confirmed by measuring the sCre value, serum Cys-C value, or urinary albumin excretion.
- Hypertension can be confirmed by measuring systemic systolic pressure.
- Hyperglycemia can be confirmed by measuring plasma glucose concentration.
- sEH at the kidney lesion site of glomerulonephritis and chronic kidney disease, which is renal failure can be confirmed by staining the kidney tissue with an anti-sEH antibody.
- the histopathological changes in the kidney of chronic kidney disease, which is glomerulonephritis and renal failure, are as follows: hematoxylin and eosin (hereinafter referred to as HE) and periodic acid-Schiff (hereinafter referred to as PAS). ) Can be confirmed by staining.
- nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof on pulmonary hypertension can be evaluated using an animal model that artificially induces pulmonary hypertension.
- An example of such an animal model is a monocrotaline-administered pulmonary hypertension model using rats (Journal of Pharmacological Sciences, 2009, Vol. 111, p. 235-243).
- An increase in pulmonary artery pressure can be confirmed by measuring right ventricular systolic pressure.
- the right ventricular hypertrophy and pulmonary hypertrophy associated with pulmonary hypertension were measured by measuring the right ventricular weight ratio (right ventricular weight / (septal weight + left ventricular weight)) and lung weight ratio (lung weight / body weight), respectively. This can be confirmed.
- sEH in the pulmonary hypertension lesion site can be confirmed by immunohistochemical staining of lung tissue using an anti-sEH antibody.
- Pulmonary artery thickening in pulmonary hypertension can be confirmed by staining the lung tissue with Elastica-Wangeson.
- Cell proliferation in lungs with pulmonary hypertension can be confirmed by immunostaining lung tissue with an antiproliferative cell nuclear antigen (hereinafter, PCNA) antibody.
- PCNA antiproliferative cell nuclear antigen
- Myocardial hypertrophy of pulmonary hypertension can be confirmed by staining the right ventricle with HE.
- the systemic blood pressure in pulmonary hypertension can be confirmed by the method described in the examples.
- pulmonary arterial hypertension By confirming these, pulmonary arterial hypertension, pulmonary vein occlusive disease, pulmonary capillary hemangiomatosis, pulmonary hypertension due to left heart disease, pulmonary hypertension due to pulmonary disease and hypoxia, chronic thromboembolism pulmonary hypertension Moreover, the therapeutic effect with respect to the pulmonary hypertension by the complex factor of unknown cause can be evaluated.
- nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof when used as a medicine, it can be used as it is or as a pharmaceutical composition in an appropriate dosage form as a mammal (for example, mouse, rat, hamster, rabbit). , Dogs, monkeys, cows, sheep or humans) orally or parenterally (for example, transdermal administration, intravenous administration, rectal administration, inhalation administration, nasal administration or ophthalmic administration). it can.
- Examples of the dosage form for administration to mammals include tablets, powders, pills, capsules, granules, syrups, solutions, injections, emulsions, suspensions or suppositories, or known continuous forms.
- a formulation is mentioned.
- These dosage forms can be produced by a known method and contain a carrier generally used in the pharmaceutical field. Examples of such carriers include excipients, lubricants, binders, disintegrants in solid preparations, and solvents, solubilizers, suspending agents, or soothing agents in liquid preparations.
- excipient examples include lactose, D-mannitol, starch, sucrose, corn starch, crystalline cellulose, and light anhydrous silicic acid.
- lubricant examples include magnesium stearate, calcium stearate, talc, and colloidal silica.
- binder examples include crystalline cellulose, D-mannitol, dextrin, hydroxypropylcellulose, hydroxypropylmethylcellulose, polyvinylpyrrolidone, starch, sucrose, gelatin, methylcellulose or sodium carboxymethylcellulose.
- disintegrant examples include starch, carboxymethyl cellulose, carboxymethyl cellulose calcium, croscarmellose sodium, carboxymethyl starch sodium, and L-hydroxypropyl cellulose.
- solvent examples include water for injection, alcohol, propylene glycol, macrogol, sesame oil or corn oil.
- solubilizer examples include polyethylene glycol, propylene glycol, D-mannitol, benzyl benzoate, ethanol, cholesterol, triethanolamine, sodium carbonate, or sodium citrate.
- suspending agent examples include surfactants such as stearyltriethanolamine, sodium lauryl sulfate, laurylaminopropionic acid, lecithin, benzalkonium chloride, benzethonium chloride or glyceryl monostearate, or polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose. , Hydrophilic polymers such as hydroxymethylcellulose, hydroxyethylcellulose or hydroxypropylcellulose.
- surfactants such as stearyltriethanolamine, sodium lauryl sulfate, laurylaminopropionic acid, lecithin, benzalkonium chloride, benzethonium chloride or glyceryl monostearate, or polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose.
- Hydrophilic polymers such as hydroxymethylcellulose, hydroxyethylcellulose or hydroxypropylcellulose.
- Examples of soothing agents include benzyl alcohol.
- Examples of the isotonic agent include glucose, sodium chloride, D-sorbitol, and D-mannitol.
- buffer solutions such as phosphate, acetate, carbonate or citrate.
- preservative examples include p-oxybenzoates, chlorobutanol, benzyl alcohol, phenethyl alcohol, dehydroacetic acid, and sorbic acid.
- antioxidant examples include sulfite and ascorbic acid.
- the above-mentioned medicament preferably contains 0.001 to 99% by weight, more preferably 0.01 to 99% by weight, of the nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof.
- the effective dosage and frequency of administration of the nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof vary depending on the dosage form, the age, weight of the patient, or the nature or severity of the condition to be treated, In general, 1 to 1000 mg, preferably 1 to 300 mg, per day for an adult can be administered in one or several divided doses.
- the above medicines may be administered alone, but may be combined with other drugs or used in combination with other drugs in order to supplement or enhance the preventive or therapeutic effect of the disease or reduce the dose. Can also be used.
- combination drugs examples include, for example, antidiabetic drugs, diabetic complication drugs, hyperlipidemia drugs, antihypertensive drugs, antiobesity drugs, diuretics, and chemotherapeutic drugs. , Immunotherapy drugs, antithrombotic drugs or cachexia improving drugs.
- the administration timing of the above medicine and the concomitant drug is not particularly limited, and these may be administered simultaneously to the administration subject, with a time difference. May be administered.
- the concomitant drug may be a low molecular compound, a polymer such as a protein, polypeptide or antibody, or a vaccine.
- the dose of the concomitant drug can be appropriately selected based on the clinically used dose.
- the mixing ratio of the above medicine and the concomitant drug can be appropriately selected depending on the administration subject, administration route, target disease, symptom, combination of the above medicine and concomitant drug, and the like.
- the concomitant drug may be used at a compounding ratio of 0.01 to 99.99 with respect to the nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof.
- diabetes therapeutic agents include animal insulin preparations extracted from bovine or porcine pancreas, human insulin preparations synthesized by genetic engineering using Escherichia coli or yeast, insulin zinc, protamine insulin zinc, fragments or derivatives of insulin, etc.
- Insulin preparations insulin resistance improvers such as pioglitazone hydrochloride, troglitazone, rosiglitazone or its maleate, ⁇ -glucosidase inhibitors such as voglibose, acarbose, miglitol or emiglitate, biguanides such as phenformin, metformin or buformin, Tolbutamide, glibenclamide, gliclazide, chlorpropamide, tolazamide, acetohexamide, glyclopyramide, glimepiride, glipizide, glybzo Insulin secretion promoters such as repaglinide, nateglinide, mitiglinide or calcium salt hydrate thereof,
- therapeutic agents for diabetic complications include aldose reductase inhibitors such as tolrestat, epalrestat, zenarestat, zopolrestat, minalrestat or fidarestat, neurotrophic factors such as NGF, NT-3 or BDNF, neurotrophic factors Examples thereof include production / secretion promoters, AGE inhibitors, active oxygen scavengers such as thioctic acid, and cerebral vasodilators such as tiapride or mexiletine.
- aldose reductase inhibitors such as tolrestat, epalrestat, zenarestat, zopolrestat, minalrestat or fidarestat
- neurotrophic factors such as NGF, NT-3 or BDNF
- neurotrophic factors examples thereof include production / secretion promoters, AGE inhibitors, active oxygen scavengers such as thioctic acid, and cerebral vasodilators such as tiapride or mexiletine
- antihyperlipidemic drugs examples include pravastatin, simvastatin, lovastatin, atorvastatin, fluvastatin, ripanple, cerivastatin or itavastatin, etc., HMG-CoA reductase inhibitors, bezafibrate, beclobrate, binifibrate, ciprofibrate, clinofibrate , Clofibrate, clofibric acid, etofibrate, fenofibrate, gemfibrozil, nicofibrate, pilifibrate, lonifibrate, fibrate compounds such as simfibrate or theofibrate, squalene synthase inhibitors, ACAT inhibitors such as avasimib or eflucimate , Anion exchange resins such as cholestyramine, probucol, nicomol or niceritrol Cochin acid drugs or ethyl icosapentate
- Antihypertensive agents include, for example, angiotensin converting enzyme inhibitors such as captopril, enalapril or delapril, candesartan cilexetil, losartan, eprosartan, valsantan, telmisartan, irbesartan or tasosartan and other angiotensin II antagonists, manidipine, nifedipine, nicardipine, Calcium antagonists such as amlodipine or efonidipine, potassium channel openers such as lebuchromacalim, clonidine or aliskiren.
- angiotensin converting enzyme inhibitors such as captopril, enalapril or delapril
- candesartan cilexetil losartan
- eprosartan valsantan
- telmisartan telmisartan
- Anti-obesity agents include, for example, central anti-obesity agents such as dexfenfluramine, fenfluramine, phentermine, sibutramine, ampepramon, dexamphetamine, mazindol, phenylpropanolamine or clobenzorex, pancreatic lipase such as orlistat Inhibitors, peptidic appetite suppressants such as leptin or CNTF (ciliary neurotrophic factor) or cholecystokinin agonists such as linchtripto.
- central anti-obesity agents such as dexfenfluramine, fenfluramine, phentermine, sibutramine, ampepramon, dexamphetamine, mazindol, phenylpropanolamine or clobenzorex, pancreatic lipase such as orlistat Inhibitors, peptidic appetite suppressants such as leptin or CNTF (ciliary neurotrophic factor) or
- diuretics examples include thiazide preparations such as xanthine derivatives such as sodium theobromide salicylate or calcium theobromide, ethiazide, cyclopenthiazide, trichloromethiazide, hydrochlorothiazide, hydroflumethiazide, ventilhydrochlorothiazide, penflutide, polythiazide or methycrothiazide.
- thiazide preparations such as xanthine derivatives such as sodium theobromide salicylate or calcium theobromide, ethiazide, cyclopenthiazide, trichloromethiazide, hydrochlorothiazide, hydroflumethiazide, ventilhydrochlorothiazide, penflutide, polythiazide or methycrothiazide.
- Antialdosterone preparations such as spironolactone or triamterene, carbonic anhydrase inhibitors such as acetazolamide, chlorbenzenesulfonamide preparations such as chlorthalidone, mefluside or indapamide, azosemide, isosorbide, ethacrynic acid, piretanide, bumetanide or furosemide.
- chemotherapeutic agents include alkylating agents such as cyclophosphamide or ifosfamide, antimetabolites such as methotrexate or 5-fluorouracil, anticancer antibiotics such as mitomycin or adriamycin, plants such as vincristine, vindesine or taxol. Derived anticancer agents, cisplatin, oxaloplatin, carboplatin, etopoxide and the like.
- immunotherapeutic agents include muramyl dipeptide derivatives, picibanil, lentinan, schizophyllan, krestin, interleukin (IL), granulocyte colony stimulating factor or erythropoietin.
- Antithrombotic agents include, for example, heparin such as heparin sodium, heparin calcium or sodium dalteparin, warfarin such as warfarin potassium, antithrombin agents such as argatroban, thrombolytic agents such as urokinase, tisokinase,reteplase, nateplase, monteplase or pamiteplase.
- Platelet aggregation inhibitors such as ticlopidine hydrochloride, cilostazol, ethyl icosapentate or sarpogrelate hydrochloride.
- cachexia-improving drugs examples include progesterone derivatives such as megesterol acetate, carbohydrate steroids such as dexamethasone, metoclopramide drugs, tetrahydrocannabinol drugs or fat metabolism improving drugs such as eicosapentaenoic acid, growth hormone, IGF- 1 or antibodies against TNF- ⁇ , LIF, IL-6 or Oncostatin M, which are factors that induce cachexia.
- progesterone derivatives such as megesterol acetate, carbohydrate steroids such as dexamethasone, metoclopramide drugs, tetrahydrocannabinol drugs or fat metabolism improving drugs such as eicosapentaenoic acid, growth hormone, IGF- 1 or antibodies against TNF- ⁇ , LIF, IL-6 or Oncostatin M, which are factors that induce cachexia.
- Step 2 Synthesis of (4-bromo-2- (trifluoromethoxy) phenyl) methanol: At ⁇ 10 ° C., sodium borohydride (2.4 g, 63 mmol) was added to a methanol (0.23 L) solution of Reference Example compound 1 (16 g, 59 mmol). After stirring at ⁇ 10 ° C. for 10 minutes, acetone (10 mL) and 1N hydrochloric acid (10 mL) were added to the reaction solution. The reaction solution was concentrated under reduced pressure, water was added to the obtained crude product, and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure.
- Step 3 Synthesis of 4-bromo-2- (trifluoromethoxy) benzyl methanesulfonate: Methanesulfonyl chloride (0.93 g, 8.1 mmol) was added to a solution of Reference Example Compound 2 (2.0 g, 7.4 mmol) and TEA (1.2 mL, 8.9 mmol) in dichloromethane (20 mL) under ice cooling. It was. After stirring at room temperature for 3 hours, water was added to the reaction solution, and the mixture was extracted with dichloromethane. The organic layer was washed with a saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. 2.6 g of 4-bromo-2- (trifluoromethoxy) benzyl methanesulfonate (hereinafter referred to as Reference Example Compound 3) ( (Quantitative).
- Step 5 Synthesis of (4-bromo-2- (trifluoromethoxy) phenyl) methanamine: Hydrazine monohydrate (0.98 g, 19 mmol) was added to a methanol (40 mL) solution of Reference Example Compound 4 (2.6 g, 6.5 mmol) at room temperature. After stirring at 60 ° C. for 2 hours, the solid precipitated at room temperature was filtered off. The filtrate was concentrated under reduced pressure, and the resulting crude product was dissolved in ethyl acetate and washed with water and a saturated aqueous sodium chloride solution.
- Step 7 Synthesis of (R) -tert-butyl 3-((4-cyano-2- (trifluoromethoxy) benzyl) carbamoyl) piperidine-1-carboxylate: At room temperature, a solution of Reference Compound 6 (0.050 g, 0.10 mmol) and zinc cyanide (0.012 g, 0.10 mmol) in a DMF (2.0 mL) solution was added to tetrakistriphenylphosphine palladium (0) (0. 030 g, 0.026 mmol) was added. After stirring at 150 ° C. for 30 minutes, water was added to the reaction solution at room temperature, and the mixture was extracted with diethyl ether.
- Step 8 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide: Under ice-cooling, trifluoroacetic acid (hereinafter TFA) (35 mL, 0.45 mol) was added to a solution of Reference Example Compound 7 (6.9 g, 16 mmol) in dichloromethane (0.16 L). After stirring at room temperature for 1 hour, the reaction solution was concentrated under reduced pressure. The obtained crude product was dissolved in dichloromethane, neutralized with a saturated aqueous sodium carbonate solution, and extracted with dichloromethane.
- TFA trifluoroacetic acid
- Example Compound 1 (1-propionamidocyclobutanecarbonyl) piperidine-3-carboxamide was obtained in an amount of 6.2 g (71%).
- Example Compound 2 (2-Methyl-2- (methylsulfonamido) propanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 2) was obtained in an amount of 2.4 g (87%).
- Example Compound 3 (1- (methylsulfonamido) cyclopropanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 3) was obtained in an amount of 0.56 g (74%).
- Example 4 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1- (trifluoromethyl) cyclopropanecarbonyl) piperidine-3-carboxamide: The same reaction as in Example 1 [Step 9] was performed using 1- (trifluoromethyl) cyclopropanecarboxylic acid (0.054 g, 0.17 mmol) to give (R) -N- (4-cyano- 0.044 g (58%) of 2- (trifluoromethoxy) benzyl) -1- (1- (trifluoromethyl) cyclopropanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 4) was obtained.
- Example 5 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1- (methylsulfonamido) cyclobutanecarbonyl) piperidine-3-carboxamide: (R) -N- (4-cyano-2- (trifluoromethoxy) was obtained by conducting the same reaction as in Example 2 [Step 3] using Reference compound 10 (0.020 g, 0.047 mmol). 0.017 g (71%) of benzyl) -1- (1- (methylsulfonamido) cyclobutanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 5) was obtained.
- Example 6 Synthesis of (R) —N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1-isobutyramidecyclobutanecarbonyl) piperidine-3-carboxamide: (R) -N- (4-cyano-2- (trifluoromethoxy) was prepared by carrying out the same reaction as in Example 1 [Step 11] using isobutyryl chloride (0.0055 g, 0.052 mmol). 0.022 g (95%) of (benzyl) -1- (1-isobutyramidecyclobutanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 6) was obtained.
- Example 7 Synthesis of (R) —N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1-pivalamidocyclobutanecarbonyl) piperidine-3-carboxamide: (R) -N- (4-cyano-2- (trifluoromethoxy) was prepared by carrying out the same reaction as in Example 1 [Step 11] using pivaloyl chloride (0.0063 g, 0.052 mmol). 0.017 g (72%) of (benzyl) -1- (1-pivalamidocyclobutanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 7) was obtained.
- Example 9 Synthesis of (R) -1- (1-acetamidocyclobutanecarbonyl) -N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide: (R) -1- (1-acetamidocyclobutanecarbonyl) -N- (4) was prepared by performing the same reaction as in Example 8 [Step 3] using Reference compound 10 (0.020 g, 0.047 mmol). 0.013 g (60%) of -cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide (hereinafter, Example Compound 9) was obtained.
- Example Compound 10 The organic layer was washed with 0.1N hydrochloric acid, water, and a saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, and concentrated under reduced pressure.
- Step 2 Synthesis of (R) -1-((R) -2-acetamido-3-methylbutanoyl) -N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide: (R) -1-((R) -2-acetamido-3-methyl) was prepared by performing the same reaction as in Example 8 [Step 3] using Reference compound 23 (0.020 g, 0.047 mmol). 0.018 g (83%) of butanoyl) -N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide (hereinafter, Example Compound 11) was obtained.
- Example 12 (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-((R) -3-methyl-2- (methylsulfonamido) butanoyl) piperidine-3- Synthesis of carboxamide: (R) -N- (4-cyano-2- (trifluoromethoxy) was prepared by conducting the same reaction as in Example 2 [Step 3] using Reference Example Compound 23 (0.020 g, 0.047 mmol). 0.020 g (83%) of benzyl) -1-((R) -3-methyl-2- (methylsulfonamido) butanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 12) was obtained.
- Example Compound 13 was obtained in an amount of 0.0080 g (13%).
- Example Compound 14 (2-Methyl-2- (methylsulfonamido) propanoyl) piperidine-3-carboxamide was obtained in an amount of 0.013 g (63%).
- Example 15 (R) -N- (4-carbamoyl-2- (trifluoromethoxy) benzyl) -1- (2-methyl-2- (methylsulfonamido) cyclopropanecarbonyl) piperidine-3-carboxamide Synthesis: (R) -N- (4-carbamoyl-2- (trifluoromethoxy) benzyl) -1 was prepared by carrying out the same reaction as in Example 14 using Example Compound 3 (0.025 g, 0.051 mmol). 0.020 g (77%) of-(2-methyl-2- (methylsulfonamido) cyclopropanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 15) was obtained.
- Example 16 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (2-hydroxy-2-methylpropanoyl) piperidine-3-carboxamide: The same reaction as in Example 1 [Step 9] was performed using 2-hydroxy-2-methylpropanoic acid (0.15 g, 0.46 mmol) to give (R) -N- (4-cyano-2- 0.12 g (62%) of (trifluoromethoxy) benzyl) -1- (2-hydroxy-2-methylpropanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 16) was obtained.
- Example 17 Synthesis of (R) —N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-pivaloylpiperidine-3-carboxamide: By performing the same reaction as in Example 1 [Step 11] using Reference Example Compound 8 (0.15 g, 0.46 mmol) and pivaloyl chloride (0.066 g, 0.55 mmol), (R) — 0.19 g (quantitative) of N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-pivaloylpiperidine-3-carboxamide (hereinafter, Example Compound 17) was obtained.
- Step 2 Synthesis of ethyl 1- (N-methylmethylsulfonamido) cyclopropanecarboxylate: Sodium hydride (55 wt%, 0.51 g, 12 mmol) was added to a DMF (10 mL) solution of Reference Example Compound 24 (2.0 g, 9.7 mmol) under ice cooling. After stirring for 10 minutes under ice cooling, the mixture was stirred for 30 minutes at room temperature. Methyl iodide (0.78 mL, 13 mmol) was added to the reaction solution under ice cooling.
- Step 3 Synthesis of 1- (N-methylmethylsulfonamido) cyclopropanecarboxylic acid: A 1N aqueous sodium hydroxide solution (12 mL, 12 mmol) was added to a methanol (20 mL) solution of Reference Example Compound 25 (1.8 g, 7.9 mmol) at room temperature. After stirring at 50 ° C. for 3 hours, 1N hydrochloric acid was added to the reaction solution at room temperature, and the mixture was extracted with chloroform.
- HATU (0.35 g, 0.93 mmol) was added to a DMF (1.6 mL) solution of the obtained crude product (0.10 g) and DIPEA (0.30 mL, 1.7 mmol) under ice cooling. After stirring for 15 minutes under ice cooling, Reference Example Compound 8 (0.28 g, 0.85 mmol) was added to the reaction solution. After stirring overnight at room temperature, water was added to the reaction solution, and the mixture was extracted with diethyl ether. The organic layer was washed with water and a saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, and concentrated under reduced pressure.
- Step 3 Synthesis of (R) -1-((R) -2-aminobutanoyl) -N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide: (R) -1-((R) -2-aminobutanoyl)-was prepared by carrying out the same reaction as in Example 1 [Step 10] using Reference Example Compound 28 (0.47 g, 0.91 mmol). 0.38 g (quantitative) of N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide (hereinafter referred to as Reference Example Compound 29) was obtained.
- Step 4 Synthesis of (R) -1-((R) -2-acetamidobutanoyl) -N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide: (R) -1-((R) -2-acetamidobutanoyl)-was prepared by conducting the same reaction as in Example 8 [Step 3] using Reference compound 29 (0.091 g, 0.22 mmol). 0.085 g (85%) of N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide (hereinafter, Example Compound 21) was obtained.
- Example 22 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-((R) -2- (methylsulfonamido) butanoyl) piperidine-3-carboxamide: (R) -N- (4-cyano-2- (trifluoromethoxy) was obtained by conducting the same reaction as in Example 2 [Step 3] using Reference compound 29 (0.096 g, 0.23 mmol). 0.090 g (79%) of (benzyl) -1-((R) -2- (methylsulfonamido) butanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 22) was obtained.
- Example 23 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1-cyanocyclopropanecarbonyl) piperidine-3-carboxamide: The same reaction as in Example 1 [Step 9] was performed using 1-cyanocyclopropanecarboxylic acid (0.034 g, 0.31 mmol) to give (R) -N- (4-cyano-2- (tri 0.081 g (63%) of fluoromethoxy) benzyl) -1- (1-cyanocyclopropanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 23) was obtained.
- Morpholine (0.36 mL, 4.1 mmol) was added to a solution of the obtained crude product (0.53 g) in DMF (4.0 mL) at room temperature. After stirring at room temperature for 6 hours, water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure.
- Example Compound 24 The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure.
- Example 25 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-((R) -2- (methylsulfonamido) propanoyl) piperidine-3-carboxamide: (R) -N- (4-cyano-2- (trifluoromethoxy) was obtained by conducting the same reaction as in Example 2 [Step 3] using Reference compound 30 (0.10 g, 0.25 mmol). 0.099 g (83%) of benzyl) -1-((R) -2- (methylsulfonamido) propanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 25) was obtained.
- Example 26 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1-isobutyramidecyclopropanecarbonyl) piperidine-3-carboxamide: By performing the same reaction as in Example 1 [Step 11] using Reference Example Compound 14 (0.020 g, 0.049 mmol) and isobutyryl chloride (0.0062 g, 0.058 mmol), (R) — 0.017 g (71%) of N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1-isobutyramidecyclopropanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 26) was obtained. It was.
- Example 27 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1-pivalamidocyclopropanecarbonyl) piperidine-3-carboxamide: By performing the same reaction as in Example 1 [Step 11] using Reference Example Compound 14 (0.020 g, 0.049 mmol) and pivaloyl chloride (0.0064 g, 0.058 mmol), (R) — 0.018 g (73%) of N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1-pivalamidocyclopropanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 27) Obtained.
- Example 28 (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (4- (methylsulfonamido) tetrahydro-2H-pyran-4-carbonyl) piperidine-3- Synthesis of carboxamide: [Step 1] Synthesis of 8-oxa-1,3-diazaspiro [4.5] decane-2,4-dione: Dihydro-2H-pyran 4 (3H) -one (2.0 g, 20 mmol), ammonium carbonate (9.6 g, 0.10 mol), TEA (2.8 mL, 20 mmol) in water: methanol (water: methanol) at room temperature.
- Example 29 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1- (cyclopropanecarboxamido) cyclobutanecarbonyl) piperidine-3-carboxamide: (R) -N- (4-cyano-2- (trifluoromethoxy) was prepared by carrying out the same reaction as in Example 1 [Step 11] using cyclopropanecarbonyl chloride (0.0059 g, 0.057 mmol). 0.012 g (52%) of benzyl) -1- (1- (cyclopropanecarboxamide) cyclobutanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 29) was obtained.
- Step 2 Synthesis of (S) -tert-butyl (1,3-dihydroxy-3-methylbutan-2-yl) carbamate: Methyl magnesium bromide diethyl ether solution (3N, 30 mL, 91 mmol) was added to a diethyl ether (0.12 L) solution of Reference Example compound 35 (4.0 g, 18 mmol) at ⁇ 78 ° C. After stirring at room temperature for 1 hour, a saturated aqueous ammonium chloride solution and water were added to the reaction solution under ice cooling, and the mixture was extracted with ethyl acetate.
- Example Compound 30 ((R) -1-((R) -2-acetamido-3-hydroxy 0.029 g (66%) of -3-methylbutanoyl) -N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide (hereinafter, Example Compound 30) was obtained.
- Example 31 (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-((R) -3-hydroxy-3-methyl-2-propionamidobutanoyl) piperidine- Synthesis of 3-carboxamide: (R) -N- (4-cyano-2- (trifluoromethoxy) was prepared by conducting the same reaction as in Example 1 [Step 11] using Reference Example Compound 39 (0.0083 g, 0.019 mmol). As a result, 0.0065 g (70%) of (benzyl) -1-((R) -3-hydroxy-3-methyl-2-propionamidobutanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 31) was obtained.
- Example Compound 32 0.038 g (81%) of (benzyl) -1-((R) -3-hydroxy-3-methyl-2- (methylsulfonamido) butanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 32) was obtained. .
- Example 33 Synthesis of (R) -1- (1-butylamidocyclobutanecarbonyl) -N- (4-cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide: (R) -1- (1-Butylamidocyclobutanecarbonyl) -N— (4) 0.018 g (79%) of -cyano-2- (trifluoromethoxy) benzyl) piperidine-3-carboxamide (hereinafter, Example Compound 33) was obtained.
- Example 34 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1- (2-cyclopropylacetamido) cyclobutanecarbonyl) piperidine-3-carboxamide: By performing the same reaction as in Example 1 [Step 9] using Reference Example Compound 10 (0.021 g, 0.049 mmol) and 2-cyclopropylacetic acid (0.0059 g, 0.058 mmol), (R) 0.0065 g of —N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1- (2-cyclopropylacetamido) cyclobutanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 34) (26%) obtained.
- Example 35 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1- (2-cyclopropylacetamido) cyclopropanecarbonyl) piperidine-3-carboxamide: By conducting the same reaction as in Example 1 [Step 9] using Reference Example Compound 14 (0.020 g, 0.049 mmol) and 2-cyclopropylacetic acid (0.0059 g, 0.058 mmol), (R) —N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (1- (2-cyclopropylacetamido) cyclopropanecarbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 35) 0083 g (35%) was obtained.
- Step 2 Synthesis of sodium 2-methyl-2- (1H-1,2,4-triazol-1-yl) propanoate: Under ice-cooling, 1N aqueous sodium hydroxide solution (3.9 mL, 3.9 mmol) was added to a solution of Reference Example Compound 40 (0.65 g, 3.6 mmol) in ethanol (18 mL). After stirring at room temperature for 1 hour, the reaction solution was concentrated under reduced pressure, and sodium 2-methyl-2- (1H-1,2,4-triazol-1-yl) propanoate (hereinafter referred to as Reference Example Compound 41) was reduced to 0. Obtained .67 g (quantitative).
- Example 37 (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1- (2-methyl-2- (1H-pyrazol-1-yl) propanoyl) piperidine-3- Synthesis of carboxamide: [Step 1] Synthesis of ethyl 2-methyl-2- (1H-pyrazol-1-yl) propanoate: By carrying out the same reaction as in Example 36 [Step 1] using 1H-pyrazole (0.42 g, 6.2 mmol), ethyl 2-methyl-2- (1H-pyrazol-1-yl) propanoate ( In the following, 0.81 g (87%) of Reference Example Compound 42) was obtained.
- Step 2 Synthesis of sodium 2-methyl-2- (1H-pyrazol-1-yl) propanoate: By performing the same reaction as in Example 36 [Step 2] using Reference Example Compound 42 (0.81 g, 4.5 mmol), sodium 2-methyl-2- (1H-pyrazol-1-yl) propanoate 0.80 g of Reference Example Compound 43 was obtained.
- Step 3 Synthesis of (R) -N- (2,4-dichlorobenzyl) -1- (1-hydroxycyclohexanecarbonyl) piperidine-3-carboxamide: (R) -N- (2,4-dichlorobenzyl) -1- (1-hydroxycyclohexane) was prepared by performing the same reaction as in Example 20 using Reference Example Compound 45 (0.10 g, 0.35 mmol). 0.030 g (24%) of carbonyl) piperidine-3-carboxamide (hereinafter, Example Compound 38) was obtained.
- Example Compound 39 ((R) -1-((R) -2-acetamido-3-hydroxy 0.021 g (96%) of -3-methylbutanoyl) -N- (2,4-dichlorobenzyl) piperidine-3-carboxamide (hereinafter, Example Compound 39) was obtained.
- Example 40 Synthesis of (R) -N- (2,4-dichlorobenzyl) -1-((R) -3-hydroxy-3-methyl-2-propionamidobutanoyl) piperidine-3-carboxamide: By performing the same reaction as in Example 1 [Step 11] using Reference Example Compound 47 (0.020 g, 0.050 mmol), (R) -N- (2,4-dichlorobenzyl) -1- ( 0.018 g (77%) of (R) -3-hydroxy-3-methyl-2-propionamidobutanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 40) was obtained.
- Example 41 (R) -N- (2,4-dichlorobenzyl) -1-((R) -3-hydroxy-3-methyl-2- (methylsulfonamido) butanoyl) piperidine-3-carboxamide Synthesis: The same reaction as in Example 2 [Step 3] was carried out using Reference Compound 47 (0.020 g, 0.050 mmol) to give (R) -N- (2,4-dichlorobenzyl) -1- ( 0.020 g (85%) of (R) -3-hydroxy-3-methyl-2- (methylsulfonamido) butanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 41) was obtained.
- Example 42 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-((R) -2-hydroxypropanoyl) piperidine-3-carboxamide: (R) -N- (4-cyano-2) was obtained by carrying out the same reaction as in Example 1 [Step 9] using (R) -2-hydroxypropanoic acid sodium salt (0.019 g, 0.17 mmol). 0.045 g (74%) of-(trifluoromethoxy) benzyl) -1-((R) -2-hydroxypropanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 42) was obtained.
- Example 43 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-((R) -2-hydroxybutanoyl) piperidine-3-carboxamide: (R) -2-N- (4-cyano-2-) is prepared by carrying out the same reaction as in Example 1 [Step 9] using (R) -2-hydroxybutanoic acid (0.017 g, 0.17 mmol). 0.056 g (89%) of (trifluoromethoxy) benzyl) -1-((R) -2-hydroxybutanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 43) was obtained.
- Example 44 Synthesis of (R) -N- (4-cyano-2- (trifluoromethoxy) benzyl) -1-((R) -2-hydroxy-3-methylbutanoyl) piperidine-3-carboxamide : (R) -2-Hydroxy-3-methylbutanoic acid (0.018 g, 0.15 mmol) was used for the same reaction as in Example 1 [Step 9] to give (R) -N- (4-cyano 0.042 g (64%) of 2- (trifluoromethoxy) benzyl) -1-((R) -2-hydroxy-3-methylbutanoyl) piperidine-3-carboxamide (hereinafter, Example Compound 44) was obtained. It was.
- Tables 1-1 to 1-6 show physical property data of Example compounds 1 to 44
- Table 2 shows physical property data of Comparative compounds 1 to 2
- Tables 3-1 to 3-5 The physical property data of Reference Example compounds 1 to 49 are shown in FIG. In the table, N.I. D. Represents “no data”.
- the solvent name in the 1H-NMR data indicates the solvent used for the measurement.
- the 400 MHz NMR spectrum was measured using a JNM-AL400 type nuclear magnetic resonance apparatus (JEOL Ltd.). The chemical shift is represented by ⁇ (unit: ppm) based on tetramethylsilane, and the signals are s (single line), d (double line), t (triple line), q (quadruple line), m ( Multiple line), brs (wide), dd (double double line), dt (double triple line), ddd (double double line), dq (double quadruple line), td (triple double line) (Multiple line) or tt (triple triple line). All solvents were commercially available.
- the ESI-MS spectrum was measured using Agilent Technologies 1200 Series, G6130A (Agilent Technology).
- Example 45 Evaluation test of sEH inhibitory activity in vitro: SEH inhibition of nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof using human sEH based on the method described in a publicly known document (Analytical Biochemistry, 2005, 343, p. 66-75) Activity was evaluated.
- Example compounds 1 to 44 showed a very strong inhibitory activity against the enzymatic reaction of human sEH, as compared with Comparative compounds 1 and 2.
- nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof exhibits a very strong inhibitory activity on the enzyme reaction of human sEH.
- sEH expression examination test in rat anti-GBM antiserum-administered nephritis model Rat anti-GBM antiserum administration nephritis model (Proceedings of the National Academy of Sciences of the United States of America, 2005, 102, p. 7336-7741; 167-176) was used to examine the expression of sEH in glomerulonephritis and chronic kidney disease with renal failure.
- Rats induced glomerulonephritis by administration of rabbit anti-GBM antiserum was designated as “nephritis-induced rat”.
- a rat not administered with anti-GBM antiserum was designated as a “normal rat”.
- Example 47 Drug efficacy evaluation test in rat anti-GBM antiserum-administered nephritis model: Rat anti-GBM antiserum administration nephritis model (Proceedings of the National Academy of Sciences of the United States of America, 2005, 102, p. 7736-7741; Europe, org. Example compound 1 or 2 was administered to 167-176), and the therapeutic effect of glipenephritis and chronic renal disease, which is renal failure, of nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof was evaluated.
- Example Compound 1 On the other hand, the group not administered with anti-GBM antiserum was designated as the “normal group”.
- Example Compound 1 3 mg / kg administration group
- a group in which 0.5% Tween 80-containing 0.5% methylcellulose aqueous solution was similarly administered to rats in the nephritis induction group was designated as a “nephritis control group”.
- the normal group was similarly administered with a 0.5% methylcellulose aqueous solution containing 0.5% Tween80.
- the sCre value was measured by the same method as described above two and three weeks after administration of the anti-GBM antiserum. Serum Cys-C values were measured 5 weeks after administration of anti-GBM antiserum. Serum Cys-C value was measured using antigen-antibody reaction.
- the rats were euthanized under anesthesia, and then the kidneys were removed and immersed in formalin solution and stored. The kidney fixed with formalin solution was embedded in paraffin, a section was prepared, a histopathological specimen (HE and PAS staining) was prepared, and a histopathological examination was performed.
- the measurement results of the sCre value after 2 and 3 weeks after administration of the anti-GBM antiserum are shown in FIG.
- the * mark in the figure indicates that it is statistically significant compared to the nephritis control group (t test, p ⁇ 0.05).
- a histopathological examination of the kidney 5 weeks after the administration of anti-GBM antiserum was performed, and the injury area of 30 to 40 glomeruli in each individual was scored in four stages according to the ratio (%) of the lesion area (lesion).
- 2 shows the results of area scores; 1+: less than 25%, 2+: 25% or more and less than 50%, 3+: 50% or more and less than 75%, and 4+: 75% or more.
- the distribution of the lesion area score is shown by one bar graph for each individual, and the vertical axis of the figure indicates the ratio of the lesion area score of each individual.
- the nephritis control group exhibited chronic glomerulonephritis and renal failure.
- Example Compound 1 In addition, the sCre value in the Example Compound 1 (3 mg / kg) administration group 3 weeks after the anti-GBM antiserum administration was statistically significantly lower than the sCre value in the nephritis control group. (FIG. 1). Therefore, Example Compound 1 was shown to have a therapeutic effect on the pathology of chronic glomerulonephritis and renal failure. In addition, Example Compound 1 was shown to have a therapeutic effect on the pathology of chronic kidney disease, which is renal failure with an increased sCre value.
- Example Compound 1 was shown to have a therapeutic effect on the pathology of chronic glomerulonephritis and renal failure. In addition, Example Compound 1 was shown to have a therapeutic effect on the pathology of chronic kidney disease in which an increase in serum Cys-C level is observed.
- Example Compound 1 was shown to have a therapeutic effect on the pathology of chronic glomerulonephritis and renal failure.
- Example Compound 2 Effect of Example Compound 2 on rat anti-GBM antiserum administered nephritis model: A group in which glomerulonephritis was induced by administering anti-GBM antiserum into the tail vein of a rat (Wistar-Kyoto strain, male, 10 weeks old; Charles River Japan Co., Ltd.) is called “nephritis induction group”. It was.
- SCre value was measured by the same method as in Example 47 1) 2 and 5 weeks after administration of anti-GBM antiserum.
- the sCre value of normal rats was 0.25 to 0.28 mg / dL (see Example 47-1)). Therefore, the sCre value 2 weeks after administration of the anti-GBM antiserum in the nephritis induction group was significantly increased as compared with the sCre value of normal rats. That is, it was shown that the nephritis induction group exhibited glomerulonephritis and pathological conditions of renal failure two weeks after administration of anti-GBM antiserum.
- Example Compound 2 10 mg / kg administration group
- a group in which 0.5% Tween 80-containing 0.5% methylcellulose aqueous solution was similarly administered to rats in the nephritis induction group was designated as a “nephritis control group”.
- the measurement results of the sCre value after 2 and 5 weeks after administration of the anti-GBM antiserum are shown in FIG.
- the nephritis control group exhibited chronic glomerulonephritis and renal failure.
- Example Compound 2 10 mg / kg administration group 5 weeks after the administration of the anti-GBM antiserum was significantly lower than the sCre value in the nephritis control group (FIG. 3). . Therefore, Example Compound 2 was shown to have a therapeutic effect on the pathology of chronic glomerulonephritis and renal failure. In addition, Example Compound 2 was shown to have a therapeutic effect on the pathology of chronic kidney disease in which an increase in sCre value was observed.
- Example 48 Drug efficacy evaluation test in rat diabetic nephropathy model: Example Compound 1 was administered to a rat diabetic nephropathy model (International Journal of Molecular Medicine, 2007, Vol. 19, p. 571-579: Hypertension, 1998, Vol. 32, p. 778-785). The therapeutic effect of the acid derivative (I) or a pharmacologically acceptable salt thereof on chronic kidney disease, which is diabetic nephropathy, was evaluated.
- Diabetic nephropathy was induced by administering streptozotocin (Enzolivesciences) aqueous solution (40 mg / kg) into the tail vein of rats (Spontaneously Hypertensive Rat, male, 12 and 13 weeks of age: Charles River, Japan). The group was designated as “Diabetic nephropathy induction group”. On the other hand, a group to which water for injection was similarly administered was designated as a “non-treatment group”.
- urine was collected at room temperature for 24 hours using a metabolic cage.
- the urinary albumin concentration in the collected urine was measured using the ELISA method.
- Urinary albumin excretion was calculated from urinary albumin concentration and urine weight.
- Example compound 1 (10 mg / kg) or positive control compound imidapril (2 mg / kg) was administered to rats in the diabetic nephropathy induction group exhibiting the pathological condition of diabetic nephropathy for 20 days from 8 days after streptozotocin administration. Once administered orally.
- Example compound 1 and imidapril were suspended in a 0.5% aqueous solution of methylcellulose containing 0.5% Tween 80.
- a group in which Example Compound 1 was administered at a dose of 10 mg / kg was designated as “Example Compound 1 Administration Group”. Further, a group in which imidapril was administered at a dose of 2 mg / kg was referred to as an “imidapril administration group”.
- a group in which 0.5% Tween 80-containing 0.5% methylcellulose aqueous solution was similarly administered to rats of the diabetic nephropathy induction group was designated as “diabetic nephropathy control group”.
- the non-treated group was similarly administered with a 0.5% methylcellulose aqueous solution containing 0.5% Tween80.
- Urine was collected for 24 hours at room temperature using a metabolic cage after the final administration of the test substance 27 days after administration of streptozotocin.
- the urinary albumin concentration in the collected urine was measured using the ELISA method.
- Urinary albumin excretion was calculated from urinary albumin concentration and urine weight.
- systemic systolic pressure was measured using the tail-cuff method 18 days after streptozotocin administration.
- 29 days after administration of streptozotocin blood was collected from the rat abdominal aorta and the plasma glucose concentration was measured. Plasma glucose concentration was measured using the Glu-DHUV method.
- Example Compound 1 was shown to have a therapeutic effect on the pathological condition of chronic diabetic nephropathy. In addition, Example Compound 1 was shown to have a therapeutic effect on the pathology of chronic kidney disease, which is diabetic nephropathy in which an increase in urinary albumin excretion is observed.
- Example Compound 1 has a therapeutic effect on the pathological condition of diabetic nephropathy. Moreover, it was shown that Example 1 has a therapeutic effect also on the pathological condition of diabetic nephropathy in which hypertension is observed.
- Example Compound 1 does not act on hyperglycemia of diabetic nephropathy.
- Example 46 From the results of Example 46, Example 47 1) and 2) and Example 48, chronic kidney disease in which the nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof is glomerulonephritis and renal failure. It has been shown to have a therapeutic effect on the pathological conditions. Moreover, it was shown that the nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof has a therapeutic effect on the pathological condition of chronic kidney disease, which is diabetic nephropathy.
- Example 49 Drug efficacy evaluation test in rat monocrotaline-administered pulmonary hypertension model: Example compound 1 or 2 was administered to a rat monocrotaline-administered pulmonary hypertension model (Journal of Pharmaceutical Sciences, 2009, Vol. 111, p. 235-243), and nipecotic acid derivative (I) or a pharmacological compound thereof The therapeutic effect of pharmaceutically acceptable salt on pulmonary hypertension was evaluated.
- Example Compound 1 Effect of Example Compound 1 on Cardiopulmonary Function and Right Ventricular Hypertrophy, Lung Hypertrophy, Pulmonary Arterial Thickening, Lung Cell Proliferation and Myocardial Hypertrophy in Rat Monocrotaline
- Pulmonary Hypertension Model A group in which pulmonary hypertension was induced by administering a monocrotaline (Sigma) aqueous solution (60 mg / kg) subcutaneously to the back of a rat (Wistar strain, male, 5 weeks old; Nippon SLC Co., Ltd.) Pulmonary hypertension induction group.
- a group to which water for injection was similarly administered was defined as a “normal group”.
- Example compound 1 (3, 10 and 30 mg / kg) or positive control compound tadalafil (10 mg / kg) was orally administered once daily to rats in the pulmonary hypertension induction group for 24 days from the day of monocrotaline administration.
- Example compound 1 and tadalafil were used suspended in 0.5% methylcellulose aqueous solution containing 0.5% Tween80.
- Groups in which Example Compound 1 was administered at doses of 3, 10 and 30 mg / kg were “Example Compound 1 (3 mg / kg) administration group” and “Example Compound 1 (10 mg / kg) administration group”, respectively. And “Example Compound 1 (30 mg / kg) administration group”.
- tadalafil administration group a group in which tadalafil was administered at a dose of 10 mg / kg was referred to as a “tadalafil administration group”.
- a comparative control a group in which 0.5% Tween 80-containing 0.5% methylcellulose aqueous solution was similarly administered to rats of the pulmonary hypertension induction group was designated as a “pulmonary hypertension control group”.
- the normal group was similarly administered with a 0.5% methylcellulose aqueous solution containing 0.5% Tween80.
- body weight, lung wet weight, and wet weight of right ventricle, left ventricle and septum were measured, right ventricular weight ratio (right ventricular weight / (septal weight + left ventricular weight)) and lung weight. The ratio (lung weight / body weight) was determined.
- the lungs were immersed in a formalin solution after wet weight measurement and stored.
- Lungs fixed with formalin solution were embedded in paraffin, sections were prepared, immunostained tissue specimens were prepared using anti-sEH antibodies, and sEH expression was examined.
- an immunostained tissue specimen was prepared using an anti-PCNA antibody, and cell proliferation was examined.
- the right ventricle was immersed in a formalin solution after wet weight measurement and stored.
- the right ventricle fixed with formalin solution was embedded in paraffin, a section was prepared, a pathological tissue specimen was prepared by HE staining, and myocardial hypertrophy was examined.
- 14,15-EET and 14,15-DHET were extracted after the excised lung was crushed in a buffer solution.
- the extracted 14,15-EET was hydrolyzed and converted to 14,15-DHET, and the 14,15-DHET concentration was measured using an ELISA method.
- the 14,15-DHET concentration increased before and after the hydrolysis reaction was taken as the 14,15-EET concentration, and the 14,15-EET / 14,15-DHET ratio was determined.
- the * mark in the figure indicates statistical significance in comparison with the pulmonary hypertension control group (Dunnett's test, p ⁇ 0.05).
- the right ventricular systolic pressure of the pulmonary hypertension control group is statistically significantly higher than the right ventricular systolic pressure of the normal group (Aspin-Welch t test, p ⁇ 0.05), It was shown to have a pathological condition of pulmonary hypertension.
- the right ventricular systolic pressure in the group administered with Example Compound 1 (10 mg / kg) and the group administered with Example Compound 1 (30 mg / kg) were statistically compared with those in the pulmonary hypertension control group. Scientifically significantly lower values (Dunnett's test, p ⁇ 0.05) (FIG. 4). Therefore, it was shown that Example Compound 1 has a therapeutic effect on the pathological condition of pulmonary hypertension in which an increase in pulmonary artery pressure is observed.
- the right ventricular weight ratio of the pulmonary hypertension control group was statistically significantly higher than the right ventricular weight ratio of the normal group (Aspin-Welch t test, p ⁇ 0.05). It was shown that he had a hypertrophic condition.
- the right ventricular weight ratio of the Example Compound 1 (10 mg / kg) administration group and the Example Compound 1 (30 mg / kg) administration group was statistically compared with the right ventricular weight ratio of the pulmonary hypertension control group. (Dunnett's test, p ⁇ 0.05) (FIG. 5). Therefore, it was shown that Example Compound 1 has a therapeutic effect also on the pathological condition of pulmonary hypertension in which right ventricular hypertrophy is observed.
- the lung weight ratio of the pulmonary hypertension control group was statistically significantly higher than the lung weight ratio of the normal group (Aspin-Welch t test, p ⁇ 0.05), and the pathological condition of lung hypertrophy Was shown.
- the lung weight ratio of the Example Compound 1 (10 mg / kg) administration group was statistically significantly lower than the lung weight ratio of the pulmonary hypertension control group (Dunnett's test, p ⁇ 0.05) (FIG. 6). Therefore, it was shown that Example Compound 1 has a therapeutic effect also on the pathological condition of pulmonary hypertension in which pulmonary hypertrophy is observed.
- Example Compound 1 has no effect on heart rate and systemic blood pressure in pulmonary hypertension.
- Example Compound 1 As a result of examining pulmonary artery thickening in pulmonary hypertension, pulmonary artery thickening was observed in the lungs of the pulmonary hypertension control group compared to the lungs of the normal group. On the other hand, in the lungs of Example Compound 1 (3 mg / kg) administration group, pulmonary artery thickening was not observed as compared with the lungs of the pulmonary hypertension control group. Therefore, it was shown that Example Compound 1 has a therapeutic effect also on the pathological condition of pulmonary hypertension in which pulmonary artery thickening is observed.
- Example Compound 1 has a therapeutic effect also on the pathological condition of pulmonary hypertension in which cell proliferation in the lung is observed.
- Example Compound 1 has a therapeutic effect also on the pathological condition of pulmonary hypertension in which myocardial hypertrophy is observed.
- the 14,15-EET / 14,15-DHET ratio in the lung of the pulmonary hypertension control group was Compared with the 15-EET / 14,15-DHET ratio, a low value was shown. Therefore, it was shown that the 14,15-EET / 14,15-DHET ratio decreased in the lungs with pulmonary hypertension.
- the 14,15-EET / 14,15-DHET ratio in the lung of the Example Compound 1 (10 mg / kg) administration group is the 14,15-EET / 14,15-DHET ratio in the lung of the pulmonary hypertension control group. High value was shown in comparison with. Thus, Example Compound 1 was shown to increase the 14,15-EET / 14,15-DHET ratio in lungs with pulmonary hypertension.
- Example Compound 1 Effect of Example Compound 1 on right ventricular hypertrophy by administration of rat monocrotaline administered pulmonary hypertension from the stage of progression of the disease state: A group in which pulmonary hypertension was induced by administering a monocrotaline (Sigma) aqueous solution (60 mg / kg) subcutaneously to the back of a rat (Wistar strain, male, 5 weeks old; Nippon SLC Co., Ltd.) Pulmonary hypertension induction group. On the other hand, a group to which water for injection was similarly administered was defined as a “normal group”.
- Example compound 1 (3 and 10 mg / kg) or positive control compound tadalafil (10 mg / kg) was orally administered to rats in the pulmonary hypertension induction group once a day.
- Example Compound 1 (3 and 10 mg / kg) was administered for 18 or 19 days from 10 days after the administration of monocrotaline.
- Tadalafil (10 mg / kg) was administered for 28 or 29 days from the day of monocrotaline administration.
- Example compound 1 and tadalafil were used suspended in 0.5% methylcellulose aqueous solution containing 0.5% Tween80.
- Example Compound 1 The groups administered with Example Compound 1 at doses of 3 and 10 mg / kg were referred to as “Example Compound 1 (3 mg / kg) administration group” and “Example Compound 1 (10 mg / kg) administration group”, respectively. Further, a group in which tadalafil was administered at a dose of 10 mg / kg was referred to as a “tadalafil administration group”. On the other hand, as a comparative control, a group in which 0.5% Tween 80-containing 0.5% methylcellulose aqueous solution was similarly administered to rats of the pulmonary hypertension induction group was designated as a “pulmonary hypertension control group”. The normal group was similarly administered with a 0.5% methylcellulose aqueous solution containing 0.5% Tween80.
- the 14,15-DHET concentration and sEH activity in the blood of the pulmonary hypertension control group were higher than the 14,15-DHET concentration and sEH activity in the blood of the normal group. Therefore, in pulmonary hypertension, it was shown that the 14,15-DHET concentration increased and the sEH activity increased.
- results are shown in FIG. 7 for the right ventricular weight ratio on the last administration day of the test compound.
- the * mark in the figure indicates that it is statistically significant in comparison with the pulmonary hypertension control group (t test, p ⁇ 0.05).
- the right ventricular weight ratio of the pulmonary hypertension control group was statistically significantly higher than the right ventricular weight ratio of the normal group (t test, p ⁇ 0.05). Therefore, it was shown that the control group for pulmonary hypertension exhibits a pathological condition of right ventricular hypertrophy.
- the right ventricular weight ratio of the Example Compound 1 (10 mg / kg) administration group was statistically significantly lower than the right ventricular weight ratio of the pulmonary hypertension control group (t test, p ⁇ 0.05) (FIG. 7). Therefore, Example Compound 1 was shown to have a therapeutic effect on the pathophysiology of pulmonary hypertension in which right ventricular hypertrophy is observed even when administered from the stage of pathophysiology of pulmonary hypertension.
- Example Compound 1 Effect of Example Compound 1 on systemic blood pressure in a pulmonary hypertension model administered with rat monocrotaline: Monocrotaline-administered pulmonary hypertension model rats were administered Example Compound 1 once, and the effect on systemic blood pressure immediately after administration of nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof was evaluated.
- Monocrotaline (Sigma) aqueous solution 60 mg / kg was administered subcutaneously to the back of rats (SD system, male, 11 weeks old; Nippon Charles River Co., Ltd.) to induce pulmonary hypertension.
- Example Compound 1 was orally administered once at a dose of 10 mg / kg. In addition, Example compound 1 was used suspended in 0.5% methylcellulose aqueous solution containing 0.5% Tween80. The group to which Example Compound 1 was administered was referred to as “Example Compound 1 Administration Group”.
- pulmonary hypertension control group a group in which 0.5% Tween 80-containing 0.5% methylcellulose aqueous solution was similarly administered to rats in which pulmonary hypertension was induced was referred to as “pulmonary hypertension control group”.
- Systemic mean blood pressure was measured immediately after administration of Example Compound 1 or 0.5% methylcellulose aqueous solution containing 0.5% Tween 80 until 1, 2, 3, 4, 5 and 6 hours after administration.
- Example Compound 1 does not affect systemic blood pressure immediately after administration in pulmonary hypertension.
- Example Compound 2 Effect of Example Compound 2 on cardiopulmonary function and right ventricular hypertrophy in rat monocrotaline-administered pulmonary hypertension model: The effect of Example Compound 2 on rat monocrotaline-administered pulmonary hypertension model was evaluated by the same method as Example 49 1) except that the test compound was different.
- Rats of the “pulmonary hypertension induction group” prepared in the same manner as in Example 49 1) were treated with Example Compound 2 (10 mg / kg) or positive control compound Tadalafil (10 mg / kg) for 24 days from the day of monocrotaline administration. ) was orally administered once a day.
- Example compound 2 and tadalafil were suspended in a 0.5% aqueous solution of methylcellulose containing 0.5% Tween 80.
- the group in which Example Compound 2 was administered at a dose of 10 mg / kg was designated as “Example Compound 2 Administration Group”, and the group in which tadalafil was administered at a dose of 10 mg / kg was designated as “Tadalafil Administration Group”.
- a group in which 0.5% Tween 80-containing 0.5% methylcellulose aqueous solution was similarly administered to rats of the pulmonary hypertension induction group was designated as a “pulmonary hypertension control group”.
- 0.5% methylcellulose aqueous solution containing 0.5% Tween 80 was similarly administered to the “normal group” to which monocrotaline was not administered.
- Example 49 1 the right ventricular systolic pressure, systemic systolic blood pressure, and heart rate were measured the day after the final administration of the test compound. On the same day, body weight, lung wet weight, and wet weight of right ventricle, left ventricle and septum were measured, right ventricular weight ratio (right ventricular weight / (septal weight + left ventricular weight)) and lung weight. The ratio (lung weight / body weight) was determined.
- the * mark in the figure indicates statistical significance in comparison with the pulmonary hypertension control group (Dunnett's test, p ⁇ 0.05).
- the right ventricular systolic pressure of the pulmonary hypertension control group is statistically significantly higher than the right ventricular systolic pressure of the normal group (Aspin-Welch t test, p ⁇ 0.05), It was shown to have a pathological condition of pulmonary hypertension.
- the right ventricular systolic pressure of the Example Compound 2 administration group was statistically significantly lower than the right ventricular systolic pressure of the pulmonary hypertension control group (Dunnett's test, p. ⁇ 0.05) (FIG. 8). Therefore, it was shown that Example Compound 2 has a therapeutic effect on the pathological condition of pulmonary hypertension in which an increase in pulmonary artery pressure is observed.
- the right ventricular weight ratio of the pulmonary hypertension control group was statistically significantly higher than the right ventricular weight ratio of the normal group (Aspin-Welch t test, p ⁇ 0.05). It was shown that he had a hypertrophic condition.
- the right ventricular weight ratio of the Example Compound 2 administration group was statistically significantly lower than the right ventricular weight ratio of the pulmonary hypertension control group (Dunnett's test, p ⁇ 0). .05) (FIG. 9). Therefore, Example Compound 2 was shown to have a therapeutic effect also on the pathological condition of pulmonary hypertension in which right ventricular hypertrophy is observed.
- the lung weight ratio of the pulmonary hypertension control group was statistically significantly higher than the lung weight ratio of the normal group (Aspin-Welch t test, p ⁇ 0.05), and the pathological condition of lung hypertrophy was shown. Moreover, the lung weight ratio of the Example Compound 2 administration group showed a low value compared with the lung weight ratio of the pulmonary hypertension control group (FIG. 10). Therefore, it was shown that Example Compound 2 has a therapeutic effect also on the pathological condition of pulmonary hypertension in which pulmonary hypertrophy is observed.
- Example Compound 2 was shown not to affect heart rate and systemic blood pressure in pulmonary hypertension.
- Example 49 From the results of Example 49 1), 2), 3) and 4), it is clear that the nipecotic acid derivative (I) or a pharmacologically acceptable salt thereof has a therapeutic effect on pulmonary hypertension. It became.
- the nipecotic acid derivative of the present invention or a pharmacologically acceptable salt thereof exhibits a strong sEH inhibitory activity and can be used as a therapeutic or preventive agent for chronic kidney disease and pulmonary hypertension in the pharmaceutical field.
Abstract
Description
(スキーム1)
(スキーム2)
(スキーム3)
(スキーム4)
(スキーム5)
〔ステップ1〕
4-ブロモ-2-(トリフルオロメトキシ)ベンズアルデヒドの合成:
-78℃下、4-ブロモ-1-ヨード-2-(トリフルオロメトキシ)ベンゼン(25g、68mmol)のTHF(0.40L)溶液に、n-ブチルリチウムヘキサン溶液(1.6規定、86mL、0.14mol)を1.5時間かけて滴下した。-78℃下で1時間撹拌した後、反応溶液に、DMF(11mL、0.14mmol)を10分間かけて滴下した。-78℃下で2時間撹拌した後、反応溶液に、クエン酸水溶液(0.25M、0.25L、63mmol)を加え、ジエチルエーテルで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、4-ブロモ-2-(トリフルオロメトキシ)ベンズアルデヒド(以下、参考例化合物1)を16g(87%)得た。
(4-ブロモ-2-(トリフルオロメトキシ)フェニル)メタノールの合成:
-10℃下、参考例化合物1(16g、59mmol)のメタノール(0.23L)溶液に、水素化ホウ素ナトリウム(2.4g、63mmol)を加えた。-10℃下で10分間撹拌した後、反応溶液に、アセトン(10mL)、1規定塩酸(10mL)を加えた。反応溶液を減圧濃縮し、得られた粗生成物に、水を加え、酢酸エチルで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=50:1→1:1)で精製し、(4-ブロモ-2-(トリフルオロメトキシ)フェニル)メタノール(以下、参考例化合物2)を15g(91%)得た。
4-ブロモ-2-(トリフルオロメトキシ)ベンジル メタンスルホナートの合成:
氷冷下、参考例化合物2(2.0g、7.4mmol)、TEA(1.2mL、8.9mmol)のジクロロメタン(20mL)溶液に、メタンスルホニルクロリド(0.93g、8.1mmol)を加えた。室温下で3時間撹拌した後、反応溶液に、水を加え、ジクロロメタンで抽出した。有機層を飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮し、4-ブロモ-2-(トリフルオロメトキシ)ベンジル メタンスルホナート(以下、参考例化合物3)を2.6g(定量的)得た。
2-(4-ブロモ-2-(トリフルオロメトキシ)ベンジル)イソインドリン-1,3-ジオンの合成:
氷冷下、参考例化合物3(2.6g、7.4mmol)のDMF(20mL)溶液に、フタルイミドカリウム(2.1g、11mmol)を加えた。室温下で14時間撹拌した後、反応溶液に、水を加えた。析出した固体をろ取し、水で洗浄し、乾燥し、2-(4-ブロモ-2-(トリフルオロメトキシ)ベンジル)イソインドリン-1,3-ジオン(以下、参考例化合物4)を2.7g(91%)得た。
(4-ブロモ-2-(トリフルオロメトキシ)フェニル)メタンアミンの合成:
室温下、参考例化合物4(2.6g、6.5mmol)のメタノール(40mL)溶液に、ヒドラジン一水和物(0.98g、19mmol)を加えた。60℃下で2時間撹拌した後、室温下で析出した固体をろ別した。ろ液を減圧濃縮し、得られた粗生成物を酢酸エチルに溶解させ、水、飽和塩化ナトリウム水溶液で洗浄した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、(4-ブロモ-2-(トリフルオロメトキシ)フェニル)メタンアミン(以下、参考例化合物5)を1.5g(85%)得た。
(R)-tert-ブチル 3-((4-ブロモ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボキシラートの合成:
室温下、参考例化合物5(0.50g、1.9mmol)、(R)-1-(tert-ブトキシカルボニル)ピペリジン-3-カルボン酸(0.43g、1.9mmol)、DIPEA(0.53g、4.1mmol)のDMF(3.0mL)溶液に、HATU(0.77g、2.0mmol)を加えた。室温下で15時間撹拌した後、反応溶液に、酢酸エチルを加え、有機層を飽和炭酸水素ナトリウム水溶液、水、飽和塩化ナトリウム水溶液で洗浄した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=9:1→1:1)で精製し、(R)-tert-ブチル 3-((4-ブロモ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボキシラート(以下、参考例化合物6)を0.89g(定量的)得た。
(R)-tert-ブチル 3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボキシラートの合成:
室温下、参考例化合物6(0.050g、0.10mmol)、シアン化亜鉛(0.012g、0.10mmol)のDMF(2.0mL)溶液に、テトラキストリフェニルホスフィンパラジウム(0)(0.030g、0.026mmol)を加えた。150℃下で30分間撹拌した後、室温下で反応溶液に、水を加え、ジエチルエーテルで抽出した。有機層を水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=20:1→1:2)で精製し、(R)-tert-ブチル 3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボキシラート(以下、参考例化合物7)を0.017g(39%)得た。
(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物7(6.9g、16mmol)のジクロロメタン(0.16L)溶液に、トリフルオロ酢酸(以下、TFA)(35mL、0.45mol)を加えた。室温下で1時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をジクロロメタンに溶解させ、飽和炭酸ナトリウム水溶液で中和し、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物8)を5.2g(98%)得た。
(R)-tert-ブチル (1-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボニル)シクロブチル)カルバマートの合成:
氷冷下、参考例化合物8(0.20g、0.67mmol)、1-((tert-ブトキシカルボニル)アミノ)シクロブタンカルボン酸(0.15g、0.67mmol)、DIPEA(0.24mL、1.3mmol)のDMF(0.70mL)溶液に、HATU(0.28g、0.73mmol)を加えた。室温下で86時間撹拌した後、反応溶液に、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(富士シリシア化学社製アミンシリカゲルDM1020、溶離液;ヘキサン:酢酸エチル=7:3→4:6)で精製し、(R)-tert-ブチル (1-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボニル)シクロブチル)カルバマート(以下、参考例化合物9)を0.25g(78%)得た。
(R)-1-(1-アミノシクロブタンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物9(0.25g、0.47mmol)のジクロロメタン(1.4mL)溶液に、TFA(0.70mL、9.1mmol)を加えた。室温下で3時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をジクロロメタンに溶解させ、飽和炭酸ナトリウム水溶液で中和し、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-1-(1-アミノシクロブタンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物10)を0.18g(90%)得た。
(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-プロピオンアミドシクロブタンカルボニル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物10(7.6g、18mmol)、TEA(5.5mL、40mmol)のジクロロメタン(54mL)溶液に、プロピオニルクロリド(1.8g、20mmol)を加えた。氷冷下で1時間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジクロロメタンで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→95:5)で精製し、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-プロピオンアミドシクロブタンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物1)を6.2g(71%)得た。
〔ステップ1〕
(R)-tert-ブチル (1-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-イル)-2-メチル-1-オキソプロパン-2-イル)カルバマートの合成:
氷冷下、参考例化合物8(3.5g、11mmol)、2-((tert-ブトキシカルボニル)アミノ)-2-メチルプロパン酸(2.6g、13mmol)、DIPEA(4.1mL、24mmol)のDMF(40mL)溶液に、HATU(4.9g、13mmol)を加えた。室温下で1時間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(富士シリシア化学社製アミンシリカゲルDM1020、溶離液;ヘキサン:酢酸エチル=9:1→4:6)で精製し、(R)-tert-ブチル (1-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-イル)-2-メチル-1-オキソプロパン-2-イル)カルバマート(以下、参考例化合物11)を5.2g(95%)得た。
(R)-1-(2-アミノ-2-メチルプロパノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物11(5.2g、10mmol)のジクロロメタン(0.10L)溶液に、TFA(25mL、0.32mol)を加えた。室温下で1.5時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をジクロロメタンに溶解させ、飽和炭酸ナトリウム水溶液で中和し、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-1-(2-アミノ-2-メチルプロパノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物12)を3.4g(82%)得た。
(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(2-メチル-2-(メチルスルホンアミド)プロパノイル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物12(2.3g、5.6mmol)、TEA(1.6mL、11mmol)のジクロロメタン(15mL)溶液に、メタンスルホニルクロリド(0.97g、8.5mmol)を加えた。氷冷下で5分間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジクロロメタンで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→95:5)で精製し、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(2-メチル-2-(メチルスルホンアミド)プロパノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物2)を2.4g(87%)得た。
〔ステップ1〕
(R)-tert-ブチル (1-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボニル)シクロプロピル)カルバマートの合成:
氷冷下、参考例化合物8(0.67g、2.0mmol)、1-((tert-ブトキシカルボニル)アミノ)シクロプロパンカルボン酸(0.49g、2.4mmol)、DIPEA(1.1mL、6.1mmol)のDMF(5.0mL)溶液に、HATU(1.1g、2.5mmol)を加えた。室温下で1時間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(富士シリシア化学社製アミンシリカゲルDM1020、溶離液;ヘキサン:酢酸エチル=9:1→4:6)で精製し、(R)-tert-ブチル (1-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボニル)シクロプロピル)カルバマート(以下、参考例化合物13)を0.92g(88%)得た。
(R)-1-(1-アミノシクロプロパンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物13(0.92g、1.8mmol)のジクロロメタン(20mL)溶液に、TFA(4.7mL、61mmol)を加えた。室温下で1.5時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をジクロロメタンに溶解させ、飽和炭酸水素ナトリウム水溶液で中和し、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-1-(1-アミノシクロプロパンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物14)を0.63g(87%)得た。
(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(メチルスルホンアミド)シクロプロパンカルボニル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物14(0.63g、1.5mmol)、TEA(1.1mL、7.7mmol)のジクロロメタン(5.0mL)溶液に、メタンスルホニルクロリド(0.27g、2.3mmol)を加えた。氷冷下で1.5時間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→95:5)で精製し、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(メチルスルホンアミド)シクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物3)を0.56g(74%)得た。
1-(トリフルオロメチル)シクロプロパンカルボン酸(0.054g、0.17mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(トリフルオロメチル)シクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物4)を0.044g(58%)得た。
参考例化合物10(0.020g、0.047mmol)を用いて実施例2〔ステップ3〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(メチルスルホンアミド)シクロブタンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物5)を0.017g(71%)得た。
イソブチリルクロリド(0.0055g、0.052mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-イソブチルアミドシクロブタンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物6)を0.022g(95%)得た。
ピバロイルクロリド(0.0063g、0.052mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-ピバルアミドシクロブタンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物7)を0.017g(72%)得た。
〔ステップ1〕
(R)-tert-ブチル (1-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボニル)シクロペンチル)カルバマートの合成:
1-((tert-ブトキシカルボニル)アミノ)シクロペンタンカルボン酸(0.078g、0.34mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-tert-ブチル (1-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボニル)シクロペンチル)カルバマート(以下、参考例化合物15)を0.13g(77%)得た。
(R)-1-(1-アミノシクロペンタンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
参考例化合物15(0.13g、0.24mmol)を用いて実施例1〔ステップ10〕と同様の反応を行うことにより、(R)-1-(1-アミノシクロペンタンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物16)を0.051g(49%)得た。
(R)-1-(1-アセトアミドシクロペンタンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物16(0.020g、0.046mmol)、TEA(0.019mL、0.14mmol)のジクロロメタン(0.20mL)溶液に、無水酢酸(0.0070g、0.068mmol)を加えた。氷冷下で1時間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→95:5)で精製し、(R)-1-(1-アセトアミドシクロペンタンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、実施例化合物8)を0.014g(62%)得た。
参考例化合物10(0.020g、0.047mmol)を用いて実施例8〔ステップ3〕と同様の反応を行うことにより、(R)-1-(1-アセトアミドシクロブタンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、実施例化合物9)を0.013g(60%)得た。
〔ステップ1〕
4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンゾニトリルの合成:
氷冷下、2,2,2-トリフルオロエタノール(1.5g、15mmol)のTHF(50mL)溶液に、水素化ナトリウム(55重量%、0.67g、15mmol)を加えた。氷冷下で10分間撹拌した後、室温下で30分間撹拌した。氷冷下、反応溶液に、4-クロロ-2-フルオロベンゾニトリル(2.0g、13mmol)を加えた。室温下で1時間撹拌した後、氷冷下、反応溶液に、0.1規定塩酸を加え、酢酸エチルで抽出した。有機層を水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=10:0→3:1)で精製し、4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンゾニトリル(以下、参考例化合物17)を2.6g(86%)得た。
(4-クロロ-2-(2,2,2-トリフルオロエトキシ)フェニル)メタンアミンの合成:
氷冷下、参考例化合物17(2.5g、11mmol)のジエチルエーテル(30mL)溶液に、水素化アルミニウムリチウム(1.0g、27mmol)を加えた。室温下で4時間撹拌した後、氷冷下、反応溶液に、THF(20mL)、水(1.0mL)、1規定水酸化ナトリウム水溶液(1.0mL)、水(3.0mL)を加えた。反応溶液をろ過後、ろ液を減圧濃縮し、(4-クロロ-2-(2,2,2-トリフルオロエトキシ)フェニル)メタンアミン(以下、参考例化合物18)を2.4g(94%)得た。
(R)-tert-ブチル 3-((4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボキシラートの合成:
参考例化合物18(2.4g、10mmol)を用いて実施例1〔ステップ6〕と同様の反応を行うことにより、(R)-tert-ブチル 3-((4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボキシラート(以下、参考例化合物19)を4.5g(定量的)得た。
(R)-N-(4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物19(2.0g、4.4mmol)に、濃塩酸(10mL、0.12mol)を加えた。室温下で3時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をジクロロメタン(10mL)に溶解させ、飽和炭酸水素ナトリウム水溶液(10mL)を加えた。室温下で30分間撹拌した後、反応溶液に、水を加え、ジクロロメタンで抽出した。有機層を水で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-N-(4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物20)を1.4g(87%)得た。
(R)-tert-ブチル (1-3-((4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)カルバモイル)ピペリジン-1-イル)-2-メチル-1-オキソプロパン-2-イル)カルバマートの合成:
参考例化合物20(0.60g、1.7mmol)を用いて実施例2〔ステップ1〕と同様の反応を行うことにより、(R)-tert-ブチル (1-3-((4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)カルバモイル)ピペリジン-1-イル)-2-メチル-1-オキソプロパン-2-イル)カルバマート(以下、参考例化合物21)を0.77g(84%)得た。
(R)-1-(2-アミノ-2-メチルプロパノイル)-N-(4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物21(0.83g、1.5mmol)に、TFA(10mL)を加えた。室温下で3時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をジクロロメタン(10mL)に溶解させ、飽和炭酸水素ナトリウム水溶液(10mL)を加えた。室温下で30分間撹拌した後、反応溶液に、水を加え、ジクロロメタンで抽出した。有機層を水で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-1-(2-アミノ-2-メチルプロパノイル)-N-(4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物22)を0.65g(96%)得た。
(R)-N-(4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)-1-(2-メチル-2-(メチルスルホンアミド)プロパノイル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物22(0.080g、0.18mmol)、ピリジン(0.030mL、0.37mmol)のジクロロメタン(2.0mL)溶液に、メタンスルホニルクロリド(0.023g、0.20mmol)を加えた。室温下で10時間撹拌した後、反応溶液に、水を加え、ジクロロメタンで抽出した。有機層を0.1規定塩酸、水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=100:1→10:1)で精製し、(R)-N-(4-クロロ-2-(2,2,2-トリフルオロエトキシ)ベンジル)-1-(2-メチル-2-(メチルスルホンアミド)プロパノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物10)を0.030g(32%)得た。
〔ステップ1〕
(R)-1-((R)-2-アミノ-3-メチルブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物8(0.21g、0.65mmol)、(R)-2-((((9H-フルオレン-9-イル)メトキシ)カルボニル)アミノ)-3-メチルブタン酸(0.24g、0.72mmol)、DIPEA(0.14mL、0.78mmol)のDMF(3.5mL)溶液に、HATU(0.30g、0.78mmol)を加えた。室温下で1時間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=9:1→1:9)で精製し、粗生成物を0.30g得た。氷冷下、得られた粗生成物(0.30g)のDMF(2.0mL)溶液に、モルホリン(0.20mL、2.3mmol)を加えた。室温下で2.5時間撹拌した後、反応溶液に、水を加え、酢酸エチルで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→90:10)で精製し、(R)-1-((R)-2-アミノ-3-メチルブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物23)を0.18g(2段階収率65%)得た。
(R)-1-((R)-2-アセトアミド-3-メチルブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
参考例化合物23(0.020g、0.047mmol)を用いて実施例8〔ステップ3〕と同様の反応を行うことにより、(R)-1-((R)-2-アセトアミド-3-メチルブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、実施例化合物11)を0.018g(83%)得た。
参考例化合物23(0.020g、0.047mmol)を用いて実施例2〔ステップ3〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-((R)-3-メチル-2-(メチルスルホンアミド)ブタノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物12)を0.020g(83%)得た。
氷冷下、参考例化合物14(0.050g、0.12mmol)、DIPEA(0.043mL、0.24mmol)のジクロロメタン(3.0mL)溶液に、エタンスルホニルクロリド(0.017g、0.13mmol)を加えた。室温下で3時間撹拌した後、ピリジン(0.30mL、3.7mmol)を加えた。室温下で3時間撹拌した後、反応溶液に、水を加え、ジクロロメタンで抽出した。有機層を0.1規定塩酸、水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=100:1→10:1)で精製し、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(エチルスルホンアミド)シクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物13)を0.0080g(13%)得た。
氷冷下、実施例化合物2(0.020g、0.041mmol)、炭酸カリウム(0.0028g、0.020mmol)のDMF(0.38mL)溶液に、過酸化水素水(30重量%、0.021mL)を加えた。室温下で18時間撹拌した後、反応溶液に、水を加え、酢酸エチルで抽出した。有機層をチオ硫酸ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→85:15)で精製し、(R)-N-(4-カルバモイル-2-(トリフルオロメトキシ)ベンジル)-1-(2-メチル-2-(メチルスルホンアミド)プロパノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物14)を0.013g(63%)得た。
実施例化合物3(0.025g、0.051mmol)を用いて実施例14と同様の反応を行うことにより、(R)-N-(4-カルバモイル-2-(トリフルオロメトキシ)ベンジル)-1-(2-メチル-2-(メチルスルホンアミド)シクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物15)を0.020g(77%)得た。
2-ヒドロキシ-2-メチルプロパン酸(0.15g、0.46mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(2-ヒドロキシ-2-メチルプロパノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物16)を0.12g(62%)得た。
参考例化合物8(0.15g、0.46mmol)、ピバロイルクロリド(0.066g、0.55mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-ピバロイルピペリジン-3-カルボキサミド(以下、実施例化合物17)を0.19g(定量的)得た。
〔ステップ1〕
1-(メチルスルホンアミド)シクロプロパンカルボン酸エチルの合成:
氷冷下、1-アミノシクロプロパンカルボン酸エチル塩酸塩(2.0g、12mmol)、DIPEA(6.3mL、36mmol)のジクロロメタン(35mL)溶液に、メタンスルホニルクロリド(1.4g、12mmol)を加えた。氷冷下で3時間撹拌した後、反応溶液に、1規定塩酸を加え、酸性にした後、酢酸エチルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=10:1→1:2)で精製し、1-(メチルスルホンアミド)シクロプロパンカルボン酸エチル(以下、参考例化合物24)を2.3g(60%)得た。
1-(N-メチルメチルスルホンアミド)シクロプロパンカルボン酸エチルの合成:
氷冷下、参考例化合物24(2.0g、9.7mmol)のDMF(10mL)溶液に、水素化ナトリウム(55重量%、0.51g、12mmol)を加えた。氷冷下で10分間撹拌した後、室温下で30分間撹拌した。氷冷下、反応溶液に、ヨウ化メチル(0.78mL、13mmol)を加えた。室温下で14時間撹拌した後、氷冷下、反応溶液に、0.1規定塩酸を加え、ヘキサン:酢酸エチル混合溶媒(ヘキサン:酢酸エチル=1:2)で抽出した。有機層を水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=10:1→1:1)で精製し、1-(N-メチルメチルスルホンアミド)シクロプロパンカルボン酸エチル(以下、参考例化合物25)を1.8g(84%)得た。
1-(N-メチルメチルスルホンアミド)シクロプロパンカルボン酸の合成:
室温下で、参考例化合物25(1.8g、7.9mmol)のメタノール(20mL)溶液に、1規定水酸化ナトリウム水溶液(12mL、12mmol)を加えた。50℃下で3時間撹拌した後、室温下、反応溶液に、1規定塩酸を加え、クロロホルムで抽出した。有機層を飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮し、1-(N-メチルメチルスルホンアミド)シクロプロパンカルボン酸(以下、参考例化合物26)を0.88g(58%)得た。
(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(N-メチルメチルスルホンアミド)シクロプロパンカルボニル)ピペリジン-3-カルボキサミドの合成:
参考例化合物26(0.13g、0.67mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(N-メチルメチルスルホンアミド)シクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物18)を0.17g(60%)得た。
室温下、3-ヒドロキシ-2,2-ジメチルプロパン酸メチル(1.0g、7.6mmol)のメタノール(7.5mL)溶液に、1規定水酸化ナトリウム水溶液(9.1mL)を加えた。室温下で4時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物に、1規定塩酸を加え、減圧濃縮した。氷冷下、得られた粗生成物(0.10g)、DIPEA(0.30mL、1.7mmol)のDMF(1.6mL)溶液に、HATU(0.35g、0.93mmol)を加えた。氷冷下で15分間撹拌した後、反応溶液に、参考例化合物8(0.28g、0.85mmol)を加えた。室温下で一晩撹拌した後、反応溶液に、水を加え、ジエチルエーテルで抽出した。有機層を水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=8:2→酢酸エチルのみ)で精製し、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(3-ヒドロキシ-2,2-ジメチルプロパノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物19)を0.24g(2段階収率65%)得た。
氷冷下、シクロヘキサノン(3.0g、31mmol)、シアン化カリウム(2.2g、34mmol)の水(5.6mL)溶液に、硫酸水溶液(40重量%、5.6mL)を加えた。室温下で1時間撹拌した後、反応溶液に、水を加え、ジエチルエーテルで抽出した。有機層を飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物に、濃塩酸(60mL)を加えた。80℃下で16時間撹拌した後、反応溶液を減圧濃縮し、粗生成物を4.0g得た。氷冷下、得られた粗生成物(0.16g)、参考例化合物8(0.15g、0.46mmol)、DIPEA(0.24mL、1.4mmol)のDMF(1.0mL)溶液に、HATU(0.45g、0.60mmol)を加えた。室温下で2時間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(富士シリシア化学社製アミンシリカゲルDM1020、溶離液;ヘキサン:酢酸エチル=7:3→4:6)で精製し、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-ヒドロキシシクロヘキサンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物20)を0.061g(2段階収率29%)得た。
〔ステップ1〕
(R)-2-((tert-ブトキシカルボニル)アミノ)ブタン酸の合成:
氷冷下、(R)-2-アミノブタン酸(2.0g、19mmol)、炭酸水素ナトリウム(1.6g、19mmol)の1,4-ジオキサン:水(1,4-ジオキサン:水=3:10、26mL)混合溶液に、ジ-tert-ブチルジカルボナート(4.7g、21mmol)を加えた。室温下で120時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をクロロホルムに溶解させ、1規定塩酸を加え、クロロホルムで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-2-((tert-ブトキシカルボニル)アミノ)ブタン酸(以下、参考例化合物27)を2.0g(定量的)得た。
tert-ブチル ((R)-1-((R)-3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-イル)-1-オキソブタン-2-イル)カルバマートの合成:
参考例化合物27(0.20g、1.0mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、tert-ブチル ((R)-1-((R)-3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-イル)-1-オキソブタン-2-イル)カルバマート(以下、参考例化合物28)を0.47g(定量的)得た。
(R)-1-((R)-2-アミノブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
参考例化合物28(0.47g、0.91mmol)を用いて実施例1〔ステップ10〕と同様の反応を行うことにより、(R)-1-((R)-2-アミノブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物29)を0.38g(定量的)得た。
(R)-1-((R)-2-アセトアミドブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
参考例化合物29(0.091g、0.22mmol)を用いて実施例8〔ステップ3〕と同様の反応を行うことにより、(R)-1-((R)-2-アセトアミドブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、実施例化合物21)を0.085g(85%)得た。
参考例化合物29(0.096g、0.23mmol)を用いて実施例2〔ステップ3〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-((R)-2-(メチルスルホンアミド)ブタノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物22)を0.090g(79%)得た。
1-シアノシクロプロパンカルボン酸(0.034g、0.31mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-シアノシクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物23)を0.081g(63%)得た。
〔ステップ1〕
(R)-1-((R)-2-アミノプロパノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
室温下、参考例化合物8(0.35g、1.1mmol)、(R)-2-((((9H-フルオレン-9-イル)メトキシ)カルボニル)アミノ)プロパン酸(0.37g、1.2mmol)、DIPEA(0.56mL、3.2mmol)のDMF(2.0mL)溶液に、HATU(0.53g、1.4mmol)を加えた。室温下で30分間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(富士シリシア化学社製アミンシリカゲルDM1020、溶離液;ヘキサン:酢酸エチル=9:1→1:9)で精製し、粗生成物を0.53g得た。室温下、得られた粗生成物(0.53g)のDMF(4.0mL)溶液に、モルホリン(0.36mL、4.1mmol)を加えた。室温下で6時間撹拌した後、反応溶液に、水を加え、酢酸エチルで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(富士シリシア化学社製アミンシリカゲルDM1020、溶離液;クロロホルム:メタノール=99:1→95:5)で精製し、(R)-1-((R)-2-アミノプロパノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物30)を0.29g(2段階収率67%)得た。
(R)-1-((R)-2-アセトアミドプロパノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物30(0.10g、0.25mmol)、TEA(0.11mL、0.14mmol)のジクロロメタン(1.0mL)溶液に、無水酢酸(0.032g、0.32mmol)を加えた。氷冷下で5分間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→90:10)で精製し、(R)-1-((R)-2-アセトアミドプロパノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、実施例化合物24)を0.11g(定量的)得た。
参考例化合物30(0.10g、0.25mmol)を用いて実施例2〔ステップ3〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-((R)-2-(メチルスルホンアミド)プロパノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物25)を0.099g(83%)得た。
参考例化合物14(0.020g、0.049mmol)、イソブチリルクロリド(0.0062g、0.058mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-イソブチルアミドシクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物26)を0.017g(71%)得た。
参考例化合物14(0.020g、0.049mmol)、ピバロイルクロリド(0.0064g、0.058mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-ピバルアミドシクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物27)を0.018g(73%)得た。
〔ステップ1〕
8-オキサ-1,3-ジアザスピロ[4.5]デカン-2,4-ジオンの合成:
室温下、ジヒドロ-2H-ピラン4(3H)-オン(2.0g、20mmol)、炭酸アンモニウム(9.6g、0.10mol)、TEA(2.8mL、20mmol)の水:メタノール(水:メタノール=1:1、60mL)混合溶液に、シアン化カリウム(3.9g、60mmol)を加えた。加熱環流下で48時間撹拌した後、反応溶液を減圧濃縮し、溶媒を半分程度留去し、析出した固体をろ取し、水で洗浄後、乾燥し、8-オキサ-1,3-ジアザスピロ[4.5]デカン-2,4-ジオン(以下、参考例化合物31)を1.4g(41%)得た。また、ろ液に、酸性になるまで濃塩酸を加え、析出した固体をろ取し、水で洗浄後、乾燥し、参考例化合物31を0.80g(24%)得た。
4-((tert-ブトキシカルボニル)アミノ)テトラヒドロ-2H-ピラン-4-カルボン酸の合成:
室温下、参考例化合物31(2.2g、13mmol)の水(30mL)溶液に水酸化カルシウム(3.0g、41mmol)を加えた。加熱環流下で48時間撹拌した後、反応溶液をセライトろ過し、ろ物を熱湯で洗浄した。ろ液を減圧濃縮し、得られた粗生成物を水:1,4-ジオキサン:メタノール(水:1,4-ジオキサン:メタノール=10:10:3、23mL)混合溶液に溶解させた。室温下、反応溶液に、ジ-tert-ブチルジカルボナート(3.4g、16mmol)、水酸化ナトリウム(0.50g、13mmol)を加えた。室温下で15時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物に、希塩酸(15mL)を加え、クロロホルム:メタノール(クロロホルム:メタノール=10:1)混合溶液で抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、4-((tert-ブトキシカルボニル)アミノ)テトラヒドロ-2H-ピラン-4-カルボン酸(以下、参考例化合物32)を2.6g(82%)得た。
(R)-tert-ブチル (4-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボニル)テトラヒドロ-2H-ピラン-4-イル)カルバマートの合成:
参考例化合物32(0.082g、0.34mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-tert-ブチル (4-(3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-カルボニル)テトラヒドロ-2H-ピラン-4-イル)カルバマート(以下、参考例化合物33)を0.10g(62%)得た。
(R)-1-(4-アミノテトラヒドロ-2H-ピランカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
参考例化合物33(0.10g、0.19mmol)を用いて実施例1〔ステップ10〕と同様の反応を行うことにより、(R)-1-(4-アミノテトラヒドロ-2H-ピランカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物34)を0.050g(58%)得た。
(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(4-(メチルスルホンアミド)テトラヒドロ-2H-ピラン-4-カルボニル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物34(0.040g、0.088mmol)を用いて実施例2〔ステップ3〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(4-(メチルスルホンアミド)テトラヒドロ-2H-ピラン-4-カルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物28)を0.024g(5.1%)得た。
シクロプロパンカルボニルクロリド(0.0059g、0.057mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(シクロプロパンカルボキサミド)シクロブタンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物29)を0.012g(52%)得た。
〔ステップ1〕
(R)-2-((tert-ブトキシカルボニル)アミノ)-3-ヒドロキシプロパン酸メチルの合成:
氷冷下、(R)-2-アミノ-3-ヒドロキシプロパン酸メチル(3.0g、19mmol)、TEA(8.1mL、58mmol)のメタノール(50mL)溶液に、ジ-tert-ブチルジカルボナート(4.6g、21mmol)を加えた。室温下で14時間撹拌した後、反応溶液に、希塩酸を加えた。室温下で1時間環撹拌した後、反応溶液に、水を加え、酢酸エチルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液、水で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=20:1→2:1)で精製し、(R)-2-((tert-ブトキシカルボニル)アミノ)-3-ヒドロキシプロパン酸メチル(以下、参考例化合物35)を4.1g(97%)得た。
(S)-tert-ブチル (1,3-ジヒドロキシ-3-メチルブタン-2-イル)カルバメートの合成:
-78℃下、参考例化合物35(4.0g、18mmol)のジエチルエーテル(0.12L)溶液に、メチルマグネシウムブロミドジエチルエーテル溶液(3規定、30mL、91mmol)を加えた。室温下で1時間撹拌した後、反応溶液に、氷冷下、飽和塩化アンモニウム水溶液、水を加え、酢酸エチルで抽出した。有機層を0.1規定希塩酸、水で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=10:1→3:1)で精製し、(S)-tert-ブチル (1,3-ジヒドロキシ-3-メチルブタン-2-イル)カルバメート(以下、参考例化合物36)を2.8g(84%)得た。
(R)-2-((tert-ブトキシカルボニル)アミノ)-3-ヒドロキシ-3-メチルブタン酸の合成:
35℃下、参考例化合物36(2.8g、13mmol)、2,2,6,6,-テトラメチルピペリジン 1-オキシル(0.40g、2.6mmol)、標準中性リン酸緩衝液(45mL)のアセトニトリル(50mL)溶液に、次亜塩素酸ナトリウム(0.8g、0.64mmol)の水(5.0mL)溶液、亜塩素酸(2.4g、27mmol)の水(10mL)溶液を、同時に別々にゆっくり加えた。35℃下で3時間撹拌した後、反応溶液に、酢酸(1.0mL)を加えた。35℃下で3時間撹拌した後、反応溶液に、水を加え、酢酸エチルで抽出した。有機層を水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物を飽和炭酸水素ナトリウム水溶液に溶解させ、酢酸エチルで洗浄した。水層に、3規定塩酸を加え、酸性にし、酢酸エチルで抽出した。有機層を水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-2-((tert-ブトキシカルボニル)アミノ)-3-ヒドロキシ-3-メチルブタン酸(以下、参考例化合物37)を2.5g(84%)得た。
tert-ブチル ((R)-1-((R)-3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-イル)-3-ヒドロキシ-3-メチル-1-オキソブタン-2-イル)カルバマートの合成:
室温下、参考例化合物8(0.30g、0.92mmol)、参考例化合物37(0.24g、1.0mmol)、DIPEA(0.35mL、2.0mmol)のDMF(2.0mL)溶液に、HATU(0.42g、1.1mmol)を加えた。室温下で1時間撹拌した後、反応溶液に、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(富士シリシア化学社製アミンシリカゲルDM1020、溶離液;ヘキサン:酢酸エチル=7:3→4:6)で精製し、tert-ブチル ((R)-1-((R)-3-((4-シアノ-2-(トリフルオロメトキシ)ベンジル)カルバモイル)ピペリジン-1-イル)-3-ヒドロキシ-3-メチル-1-オキソブタン-2-イル)カルバマート(以下、参考例化合物38)を0.44g(89%)得た。
(R)-1-((R)-2-アミノ-3-ヒドロキシ-3-メチルブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物38(0.44g、0.82mmol)のジクロロメタン(8.0mL)溶液に、TFA(1.8mL、23mmol)を加えた。室温下で2時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をジクロロメタンに溶解させ、飽和炭酸ナトリウム水溶液で中和し、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-1-((R)-2-アミノ-3-ヒドロキシ-3-メチルブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物39)を0.20g(58%)得た。
((R)-1-((R)-2-アセトアミド-3-ヒドロキシ-3-メチルブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物39(0.040g、0.090mmol)、DIPEA(0.035mL、0.20mmol)のジクロロメタン(0.30mL)溶液に、無水酢酸(0.010g、0.10mmol)を加えた。氷冷下で10分間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→95:5)で精製し、((R)-1-((R)-2-アセトアミド-3-ヒドロキシ-3-メチルブタノイル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、実施例化合物30)を0.029g(66%)得た。
参考例化合物39(0.0083g、0.019mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-((R)-3-ヒドロキシ-3-メチル-2-プロピオンアミドブタノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物31)を0.0065g(70%)得た。
参考例化合物39(0.040g、0.090mmol)を用いて実施例2〔ステップ3〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-((R)-3-ヒドロキシ-3-メチル-2-(メチルスルホンアミド)ブタノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物32)を0.038g(81%)得た。
ブチリルクロリド(0.0060g、0.057mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-1-(1-ブチルアミドシクロブタンカルボニル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、実施例化合物33)を0.018g(79%)得た。
参考例化合物10(0.021g、0.049mmol)、2-シクロプロピル酢酸(0.0059g、0.058mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(2-シクロプロピルアセトアミド)シクロブタンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物34)を0.0065g(26%)得た。
参考例化合物14(0.020g、0.049mmol)、2-シクロプロピル酢酸(0.0059g、0.058mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(1-(2-シクロプロピルアセトアミド)シクロプロパンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物35)を0.0083g(35%)得た。
〔ステップ1〕
2-メチル-2-(1H-1,2,4-トリアゾール-1-イル)プロパン酸エチルの合成:
室温下、2-ブロモ-2-メチルプロパン酸エチル(1.0g、5.1mmol)のDMF(25mL)溶液に、炭酸セシウム(5.0g、15mmol)、1,2,4-トリアゾール-1-イドナトリウム(0.58g、6.2mmol)を加えた。50℃下で24時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物に、水を加え、クロロホルムで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=7:3→4:6)で精製し、2-メチル-2-(1H-1,2,4-トリアゾール-1-イル)プロパン酸エチル(以下、参考例化合物40)を0.84g(89%)得た。
2-メチル-2-(1H-1,2,4-トリアゾール-1-イル)プロパン酸ナトリウムの合成:
氷冷下、参考例化合物40(0.65g、3.6mmol)のエタノール(18mL)溶液に、1規定水酸化ナトリウム水溶液(3.9mL、3.9mmol)を加えた。室温下で1時間撹拌した後、反応溶液を減圧濃縮し、2-メチル-2-(1H-1,2,4-トリアゾール-1-イル)プロパン酸ナトリウム(以下、参考例化合物41)を0.67g(定量的)得た。
(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(2-メチル-2-(1H-1,2,4-トリアゾール-1-イル)プロパノイル)ピペリジン-3-カルボキサミドの合成:
参考例化合物41(0.090g、0.51mmol)を用いて実施例1〔ステップ6〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(2-メチル-2-(1H-1,2,4-トリアゾール-1-イル)プロパノイル)ピペリジン-3(以下、実施例化合物36)を0.12g(54%)得た。
〔ステップ1〕
2-メチル-2-(1H-ピラゾール-1-イル)プロパン酸エチルの合成:
1H-ピラゾール(0.42g、6.2mmol)を用いて実施例36〔ステップ1〕と同様の反応を行うことにより、2-メチル-2-(1H-ピラゾール-1-イル)プロパン酸エチル(以下、参考例化合物42)を0.81g(87%)得た。
2-メチル-2-(1H-ピラゾール-1-イル)プロパン酸ナトリウムの合成:
参考例化合物42(0.81g、4.5mmol)を用いて実施例36〔ステップ2〕と同様の反応を行うことにより、2-メチル-2-(1H-ピラゾール-1-イル)プロパン酸ナトリウム(以下、参考例化合物43)を0.80g得た。
(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(2-メチル-2-(1H-ピラゾール-1-イル)プロパノイル)ピペリジン-3-カルボキサミドの合成:
参考例化合物43(0.090g、0.51mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-(2-メチル-2-(1H-ピラゾール-1-イル)プロパノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物37)を0.16g(68%)得た。
〔ステップ1〕
(R)-tert-ブチル 3-((2,4-ジクロロベンジル)カルバモイル)ピペリジン-1-カルボキシラートの合成:
2,4-ジクロロベンジルアミン(1.5g、8.5mmol)を用いて実施例1〔ステップ6〕と同様の反応を行うことにより、(R)-tert-ブチル 3-((2,4-ジクロロベンジル)カルバモイル)ピペリジン-1-カルボキシラート(以下、参考例化合物44)を2.6g(定量的)得た。
(R)-N-(2,4-ジクロロベンジル)ピペリジン-3-カルボキサミドの合成:
参考例化合物44(2.6g、6.7mmol)を用いて実施例1〔ステップ8〕と同様の反応を行うことにより、(R)-N-(2,4-ジクロロベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物45)を1.8g(95%)得た。
(R)-N-(2,4-ジクロロベンジル)-1-(1-ヒドロキシシクロヘキサンカルボニル)ピペリジン-3-カルボキサミドの合成:
参考例化合物45(0.10g、0.35mmol)を用いて実施例20と同様の反応を行うことにより、(R)-N-(2,4-ジクロロベンジル)-1-(1-ヒドロキシシクロヘキサンカルボニル)ピペリジン-3-カルボキサミド(以下、実施例化合物38)を0.030g(24%)得た。
〔ステップ1〕
tert-ブチル ((R)-1-((R)-3-(2,4-ジクロロベンジル)カルバモイル)ピペリジン-1-イル)-3-ヒドロキシ-3-メチル-1-オキソブタン-2-イル)カルバマートの合成:
氷冷下、参考例化合物37(0.089g、0.38mmol)、参考例化合物45(0.10g、0.35mmol)、DIPEA(0.20mL、1.1mmol)のDMF(0.70mL)溶液に、HATU(0.16g、0.42mmol)を加えた。室温下で1時間撹拌した後、反応溶液に、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;ヘキサン:酢酸エチル=7:3→4:6)で精製し、tert-ブチル ((R)-1-((R)-3-(2,4-ジクロロベンジル)カルバモイル)ピペリジン-1-イル)-3-ヒドロキシ-3-メチル-1-オキソブタン-2-イル)カルバマート(以下、参考例化合物46)を0.15g(82%)得た。
氷冷下、参考例化合物46(0.70g、1.7mmol)のジクロロメタン(2.0mL)溶液に、TFA(1.0mL、13mmol)を加えた。室温下で2.5時間撹拌した後、反応溶液に、TFA(1.0mL、13mmol)を加えた。室温下で1時間撹拌した後、反応溶液を減圧濃縮した。得られた粗生成物をジクロロメタンに溶解させ、飽和炭酸ナトリウム水溶液で中和し、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-1-((R)-2-アミノ-3-ヒドロキシ-3-メチルブタノイル)-N-(2,4-ジクロロベンジル)ピペリジン-3-カルボキサミド(以下、参考例化合物47)を0.47g(84%)得た。
((R)-1-((R)-2-アセトアミド-3-ヒドロキシ-3-メチルブタノイル)-N-(2,4-ジクロロベンジル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物47(0.020g、0.050mmol)、TEA(0.014mL、0.099mmol)のジクロロメタン(0.15mL)溶液に、無水酢酸(0.0056g、0.055mmol)を加えた。氷冷下で10分間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジクロロメタンで抽出した。有機層を無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(溶離液;クロロホルム:メタノール=99:1→95:5)で精製し、((R)-1-((R)-2-アセトアミド-3-ヒドロキシ-3-メチルブタノイル)-N-(2,4-ジクロロベンジル)ピペリジン-3-カルボキサミド(以下、実施例化合物39)を0.021g(96%)得た。
参考例化合物47(0.020g、0.050mmol)を用いて実施例1〔ステップ11〕と同様の反応を行うことにより、(R)-N-(2,4-ジクロロベンジル)-1-((R)-3-ヒドロキシ-3-メチル-2-プロピオンアミドブタノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物40)を0.018g(77%)得た。
参考例化合物47(0.020g、0.050mmol)を用いて実施例2〔ステップ3〕と同様の反応を行うことにより、(R)-N-(2,4-ジクロロベンジル)-1-((R)-3-ヒドロキシ-3-メチル-2-(メチルスルホンアミド)ブタノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物41)を0.020g(85%)得た。
(R)-2-ヒドロキシプロパン酸ナトリウム(0.019g、0.17mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-((R)-2-ヒドロキシプロパノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物42)を0.045g(74%)得た。
(R)-2-ヒドロキシブタン酸(0.017g、0.17mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-((R)-2-ヒドロキシブタノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物43)を0.056g(89%)得た。
(R)-2-ヒドロキシ-3-メチルブタン酸(0.018g、0.15mmol)を用いて実施例1〔ステップ9〕と同様の反応を行うことにより、(R)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)-1-((R)-2-ヒドロキシ-3-メチルブタノイル)ピペリジン-3-カルボキサミド(以下、実施例化合物44)を0.042g(64%)得た。
〔ステップ1〕
(R)-tert-ブチル 3-((5-(トリフルオロメチル)ピリジン-2-イル)カルバモイル)ピペリジン-1-カルボキシラートの合成:
氷冷下、(R)-1-(tert-ブトキシカルボニル)ピペリジン-3-カルボン酸(20g、87mmol)のTHF(1.0L)溶液に、DMF(0.68mL、8.7mmol)、オキサリルクロリド(8.0mL、92mmol)を内温が5℃を超えないように加えた。氷冷下で30分間撹拌した後、-25℃下、反応溶液に、2-アミノ-5-(トリフルオロメチル)ピリジン(15g、92mmol)、ピリジン(15mL、0.18mmol)のTHF(0.10L)溶液を内温が-20℃を超えないように加えた。氷冷下で3時間撹拌した後、反応溶液に、飽和塩化ナトリウム水溶液を内温が5℃を超えないように加え、ジクロロメタンで抽出した。有機層を飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物に、ヘキサンを加えた。析出した固体をろ取し、ろ液を減圧濃縮した。同様の精製操作を2回繰り返した。得られた固体を合わせ、(R)-tert-ブチル 3-((5-(トリフルオロメチル)ピリジン-2-イル)カルバモイル)ピペリジン-1-カルボキシラート(以下、参考例化合物48)を26g(80%)得た。
(R)-N-(5-(トリフルオロメチル)ピリジン-2-イル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物48(1.5g、4.0mmol)のジクロロメタン(10mL)溶液に、TFA(2.2mL、28mmol)を加えて、室温下撹拌した。2時間後、反応溶液に飽和炭酸水素ナトリウム水溶液、水を加えて、ジクロロメタンで抽出した。有機層を飽和食塩水で洗浄後、無水硫酸ナトリウムで乾燥後、減圧濃縮し、(R)-N-(5-(トリフルオロメチル)ピリジン-2-イル)ピペリジン-3-カルボキサミド(以下、参考例化合物49)を0.95g(87%)得た。
(R)-1-(1-ヒドロキシシクロヘキサンカルボニル)-N-(5-(トリフルオロメチル)ピリジン-2-イル)ピペリジン-3-カルボキサミドの合成:
氷冷下、参考例化合物49(0.13g、0.46mmol)、1-ヒドロキシシクロヘキサンカルボン酸(0.079g、0.55mmol)、DIPEA(0.24mL、1.4mmol)のDMF(1.0mL)溶液に、HATU(0.23g、0.60mmol)を加えた。室温下で1時間撹拌した後、反応溶液に、水、1規定塩酸を加え、ジエチルエーテルで抽出した。有機層を飽和炭酸水素ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をシリカゲルカラムクロマトグラフィー(富士シリシア化学社製アミンシリカゲルDM1020、溶離液;ヘキサン:酢酸エチル=9:1→3:7)で精製し、(R)-1-(1-ヒドロキシシクロヘキサンカルボニル)-N-(5-(トリフルオロメチル)ピリジン-2-イル)ピペリジン-3-カルボキサミド(以下、比較例化合物1)を0.058g(32%)得た。
室温下、参考例化合物8(0.10g、0.31mmol)、N-アセチルグリシン(0.036g、0.31mmol)、DIPEA(0.16mL、0.92mmol)のDMF(5mL)溶液にHATU(0.14g、0.37mmol)を加えた。室温下で14時間撹拌した後、氷冷下、反応溶液に、1規定希塩酸を加え、ヘキサン:酢酸エチル(ヘキサン:酢酸エチル=1:2)混合溶媒で抽出した。有機層を水、飽和塩化ナトリウム水溶液で洗浄し、無水硫酸ナトリウムで乾燥後、減圧濃縮した。得られた粗生成物をジエチルエーテル(1.0mL)に溶解させ、ヘキサン(4.0mL)を加えた。析出したゲル状物質をろ取し、(R)-1-(2-アセトアミドアセチル)-N-(4-シアノ-2-(トリフルオロメトキシ)ベンジル)ピペリジン-3-カルボキサミド(以下、比較例化合物2)を0.040g(31%)得た。
公知文献(Analytical Biochemistry、2005年、第343巻、p.66-75)記載の方法に基づき、ヒトsEHを用いて、ニペコチン酸誘導体(I)又はその薬理学的に許容される塩のsEH阻害活性を評価した。
ラット抗GBM抗血清投与腎炎モデル(Proceedings of the National Academy of Sciences of the United States of America、2005年、第102巻、p.7736-7741;European journal of pharmacology、2002年、第449巻、p.167-176)の腎臓を用い、sEHの糸球体腎炎及び腎不全である慢性腎臓病における発現を検討した。
ラット抗GBM抗血清投与腎炎モデル(Proceedings of the National Academy of Sciences of the United States of America、2005年、第102巻、p.7736-7741;European journal of pharmacology、2002年、第449巻、p.167-176)に実施例化合物1又は2を投与し、ニペコチン酸誘導体(I)又はその薬理学的に許容される塩の糸球体腎炎及び腎不全である慢性腎臓病に対する治療効果を評価した。
ラット(Wistar-Kyoto系、雄性、8週齢;日本チャールス・リバー株式会社)の尾静脈内に、文献記載の方法(Proceedings of the National Academy of Sciences of the United States of America、2005年、第102巻、p.7736-7741;European journal of pharmacology、2002年、第449巻、p.167-176)にて作成したウサギの抗GBM抗血清を投与して、腎炎を誘発させた群を「腎炎誘発群」とした。一方で、抗GBM抗血清を投与しない群を、「正常群」とした。
ラット(Wistar-Kyoto系、雄性、10週齢;日本チャールス・リバー株式会社)の尾静脈内に、抗GBM抗血清を投与して、糸球体腎炎を誘発させた群を、「腎炎誘発群」とした。
ラット糖尿病性腎症モデル(International Journal of Molecular Medicine、2007年、第19巻、p.571-579:Hypertension、1998年、32巻、p.778-785)に実施例化合物1を投与し、ニペコチン酸誘導体(I)又はその薬理学的に許容される塩の糖尿病性腎症である慢性腎臓病に対する治療効果を評価した。
ラットモノクロタリン投与肺高血圧症モデル(Journal of Pharmacological Sciences、2009年、第111巻、p.235-243)に、実施例化合物1又は2を投与し、ニペコチン酸誘導体(I)又はその薬理学的に許容される塩の肺高血圧症に対する治療効果を評価した。
ラット(Wistar系、雄性、5週齢;日本エスエルシー株式会社)の背部皮下に、モノクロタリン(シグマ社)水溶液(60mg/kg)を投与して、肺高血圧症を誘発させた群を、「肺高血圧症誘発群」とした。一方で、注射用水を同様に投与した群を、「正常群」とした。
ラット(Wistar系、雄性、5週齢;日本エスエルシー株式会社)の背部皮下に、モノクロタリン(シグマ社)水溶液(60mg/kg)を投与して、肺高血圧症を誘発させた群を、「肺高血圧症誘発群」とした。一方で、注射用水を同様に投与した群を、「正常群」とした。
モノクロタリン投与肺高血圧症モデルラットに、実施例化合物1を単回投与し、ニペコチン酸誘導体(I)又はその薬理学的に許容される塩の投与直後からの全身血圧に対する作用を評価した。
被験化合物が異なる点を除いて、実施例49の1)と同じ方法で、ラットモノクロタリン投与肺高血圧症モデルに対する実施例化合物2の効果を評価した。
Claims (6)
- 以下の一般式(I)で示される、ニペコチン酸誘導体又はその薬理学的に許容される塩。
R2及びR3は、それぞれ独立して、水素原子、炭素数1~6のアルキル基又は炭素数2~7のアルキルオキシアルキル基(該アルキル基及びアルキルオキシアルキル基は、1~3個の水素原子が、それぞれ独立して、ハロゲン原子、水酸基又はシアノ基で置換されていてもよい)を表すか、又は、一緒になって-(CH2)l-若しくは-(CH2)m-O-(CH2)n-を表すが、同時に水素原子を表すことはなく、
R4及びR5は、それぞれ独立して、水素原子、ハロゲン原子、シアノ基、炭素数1~6のアルキル基若しくはアルキルオキシ基、炭素数3~6のシクロアルキル基若しくはシクロアルキルオキシ基(該アルキル基、アルキルオキシ基、シクロアルキル基及びシクロアルキルオキシ基は、1~3個の水素原子が、それぞれ独立して、ハロゲン原子で置換されていてもよい)又は-C(=O)NH2を表すが、同時にアルキルオキシ基を表すことはなく、
R6は、水素原子又は炭素数1~6のアルキル基を表し、
R7は、炭素数1~6のアルキル基、炭素数3~6のシクロアルキル基、炭素数2~7のアルキルオキシアルキル基又は炭素数4~7のシクロアルキルアルキル基(該アルキル基、シクロアルキル基、アルキルオキシアルキル基及びシクロアルキルアルキル基は、1~3個の水素原子が、それぞれ独立して、ハロゲン原子、水酸基又はシアノ基で置換されていてもよい)を表し、
lは、2~5の整数を表し、
m及びnは、それぞれ独立して、1又は2を表す。] - R2及びR3は、それぞれ独立して、水素原子若しくは炭素数1~6のアルキル基を表すか、又は、一緒になって-(CH2)l-を表すが、同時に水素原子を表すことはなく、
R4は、ベンゼン環上の2位の置換基を表し、
R5は、ベンゼン環上の4位の置換基を表す、請求項1記載のニペコチン酸誘導体又はその薬理学的に許容される塩。 - R1は、-N(R6)C(=O)R7又は-N(R6)S(=O)2R7を表し、
R4は、ハロゲン原子又は炭素数1~6のアルキル基若しくはアルキルオキシ基を表し、
R5は、ハロゲン原子、シアノ基又は炭素数1~6のアルキル基若しくはアルキルオキシ基を表し、
R6は、水素原子を表す、請求項1又は2記載のニペコチン酸誘導体又はその薬理学的に許容される塩。 - 請求項1~3のいずれか一項記載のニペコチン酸誘導体又はその薬理学的に許容される塩を有効成分として含有する、医薬。
- 請求項1~3のいずれか一項記載のニペコチン酸誘導体又はその薬理学的に許容される塩を有効成分として含有する、可溶性エポキシド加水分解酵素阻害剤。
- 請求項1~3のいずれか一項記載のニペコチン酸誘導体又はその薬理学的に許容される塩を有効成分として含有する、慢性腎臓病若しくは肺高血圧症の治療剤又は予防剤。
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WO2015046404A1 (ja) * | 2013-09-26 | 2015-04-02 | 東レ株式会社 | 肺高血圧症の治療剤又は予防剤 |
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CN109394748A (zh) * | 2018-11-14 | 2019-03-01 | 上海市第十人民医院 | Tppu在治疗制备肥胖所致肾损伤药物中的应用 |
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WO2015046404A1 (ja) * | 2013-09-26 | 2015-04-02 | 東レ株式会社 | 肺高血圧症の治療剤又は予防剤 |
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