WO2010095766A1 - 1,4-benzodiazepin-2-on derivatives - Google Patents
1,4-benzodiazepin-2-on derivatives Download PDFInfo
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- WO2010095766A1 WO2010095766A1 PCT/JP2010/053178 JP2010053178W WO2010095766A1 WO 2010095766 A1 WO2010095766 A1 WO 2010095766A1 JP 2010053178 W JP2010053178 W JP 2010053178W WO 2010095766 A1 WO2010095766 A1 WO 2010095766A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D243/00—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms
- C07D243/06—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms having the nitrogen atoms in positions 1 and 4
- C07D243/10—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms having the nitrogen atoms in positions 1 and 4 condensed with carbocyclic rings or ring systems
- C07D243/14—1,4-Benzodiazepines; Hydrogenated 1,4-benzodiazepines
- C07D243/16—1,4-Benzodiazepines; Hydrogenated 1,4-benzodiazepines substituted in position 5 by aryl radicals
- C07D243/18—1,4-Benzodiazepines; Hydrogenated 1,4-benzodiazepines substituted in position 5 by aryl radicals substituted in position 2 by nitrogen, oxygen or sulfur atoms
- C07D243/24—Oxygen atoms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/04—Anorexiants; Antiobesity agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/06—Antihyperlipidemics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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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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- 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
- C07D401/12—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 chain containing hetero atoms as chain links
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
- C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
Definitions
- the present invention relates to 1 ,4-benzodiazepin-2-on derivatives which are useful in the pharmaceutical field. These compounds have inhibitory activity of diacylglycerol O-acyltransferase type 1 (hereinafter also referred to as "DGAT 1 ”) and are useful as agents for treating and/or preventing hyperlipidemia, diabetes and obesity.
- DGAT 1 diacylglycerol O-acyltransferase type 1
- Obesity is a condition, in which the background of lack of exercise, intake of excessive energy, ageing, etc. leads to energy imbalance, the surplus energy is accumulated generally as neutral fat (triacylglycerol, TG) in adipose tissue, and a body weight and a fat mass are thus increased.
- neutral fat triacylglycerol, TG
- TG neutral fat
- the concept of metabolic syndrome associated with obesity involving the accumulation of the visceral fat, as an upstream risk factor including a plurality of risk factors of diabetes, lipidosis, hypertension, etc. has been established, and the diagnostic criteria and therapeutic guidelines for the metabolic syndrome were formulated (Journal of Japan Society for the Study of Obesity, Vol. 12, Extra Edition, 2006). Since the metabolic syndrome results in increase in the risks of arteriosclerosis, cardiovascular disorder and cerebrovascular disorder, treatment of obesity has been recognized to be important for preventing these diseases.
- DGATs Diacylglycerol acyltransferases
- EC 2.3.1.20 Diacylglycerol acyltransferases
- DGATs have been found to include two subtypes of DGATs 1 and 2. There is no significant homology at the generic or amino acid level between the DGATs 1 and 2, which are encoded by different genes (Proc. Natl. Acad. Sci. USA., 95, 13018-13023, 1998; JBC, 276, 38870-38876, 2001).
- DGATl which is present in the small intestine, adipose tissue, the liver, etc., is believed to be involved in lipid absorption; lipid accumulation in the fat cell; and VLDL secretion and lipid accumulation in the liver, in the small intestine, the fat cell and the liver, respectively (Ann. Med., 36, 252-261, 2004; JBC, 280, 21506-21514, 2005).
- a DGATl inhibitor is expected to improve metabolic syndrome through inhibition of the lipid absorption in the small intestine, the lipid accumulation in the adipose tissue and the liver, and the lipid secretion from the liver.
- DGATl -knockout mice deficient in DGATl at the generic level were produced, and analyses thereof were conducted.
- the DGATl -knockout mice have been found to have smaller fat masses than those of wild-type mice and to exhibit resistance to obesity, abnormal glucose tolerance, insulin resistance and fatty liver due to a high-fat diet load (Nature Genetics, 25, 87-90, 2000; JCI, 109, 1049-1055, 2002).
- DGATl inhibitors are likely to be therapeutic drugs with efficacy for obesity or type 2 diabetes, lipidosis, hypertension, fatty liver, arteriosclerosis, cerebrovascular disorder, coronary artery disease, or the like, associated with the obesity.
- Some compounds having DGATl inhibitory activity have been known, all of which have different structures from that of a compound according to the present invention (for example, see WO 2004/100881, WO 2006/044775 and WO 2006/113919).
- the present inventors conducted extensive research for developing a compound having DGATl inhibitory activity, found that a compound according to the present invention is efficacious as the compound having the DGATl inhibitory activity, and thus accomplished the present invention based on such findings.
- the present invention relates to a compound represented by a formula (I):
- R 1 each independently represents a hydrogen atom, a halogen atom or trifluoromethoxy
- R 2 represents lower alkyl, which may be substituted with 1 to 3 same or different halogen atoms
- R 3 and R 4 each independently represent lower alkyl
- R 5 is a group selected from the group consisting of:
- phenyl which may be substituted with 1 to 3 same or different groups selected from the group consisting of halogen atoms, lower alkoxy and trifluoromethyl;
- heteroaryl selected from the group consisting of pyridinyl, pyrazinyl, imidazolyl, thiazolyl, thienyl and oxazolyl, which heteroaryl may be substituted with 1 to 3 same or different halogen atoms or lower alkyl groups which may be substituted with 1 to 3 same or different halogen atoms;
- R 6 each independently represents a group selected from the group consisting of a hydrogen atom, a halogen atom and trifluoromethoxy; m is an integer of from 0 to 2; p is an integer of from 1 to 4; and q is an integer of from 1 to 5, or a pharmaceutically acceptable salt thereof.
- the present invention also relates to a pharmaceutical composition containing the compound represented by the formula (I) and a pharmaceutically acceptable carrier.
- the present invention also relates to a DGATl inhibitor containing the compound represented by the formula (I) or a pharmaceutically acceptable salt thereof as an active ingredient.
- the present invention also relates to an agent for treating and/or preventing hyperlipidemia, diabetes and obesity, which contains the compound represented by the formula (I) or a pharmaceutically acceptable salt thereof as an active ingredient.
- a compound (I) according to the present invention or a pharmaceutically acceptable salt thereof has strong DGATl inhibitory activity and is thus useful for treating and/or preventing hyperlipidemia, diabetes and obesity.
- halogen atom encompasses, for example, fluorine, chlorine, bromine and iodine atoms.
- lower alkyl refers to linear or branched Ci_ 6 alkyl, examples of which include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isoamyl, neopentyl, isopentyl, 1,1-dimethylpropyl, 1 -methyl butyl, 2-methyl butyl, 1 ,2-dimethylpropyl, hexyl, isohexyl, 1 -methyl pentyl, 2-methyl pentyl, 3-methyl pentyl, 1,1 -dimethyl butyl, 1,2-dimethyl butyl, 2,2-dimethyl butyl, 1,3-dimethyl butyl, 2,3-dimethyl butyl, 3,3-dimethyl
- lower alkoxy refers to a group in which the hydrogen atom of hydroxy is substituted with the above-mentioned lower alkyl, examples of which include methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, tert-butoxy, pentyloxy, isopentyloxy, hexyloxy and isohexyloxy.
- Examples of "C 3-6 branched lower alkyl” specifically include isopropyl, sec-butyl, tert-butyl and 1-ethylpropyl.
- C 3-7 cycloalkyl refers to a cycloalkyl group composed of 3 to 7 carbon atoms and specifically encompasses cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl.
- formula (I) a compound according to the present invention, represented by the formula (I):
- R 1 each independently represents a hydrogen atom, a halogen atom or trifluoromethoxy.
- "Halogen atom” represented by R 1 encompasses the same groups as the halogen atoms defined above, of which examples specifically include fluorine, chlorine, bromine and iodine atoms.
- R 2 represents lower alkyl, which may be substituted with 1 to 3 same or different halogen atoms.
- “Lower alkyl” represented by R 2 encompasses the same groups as the lower alkyl defined above, of which examples specifically include methyl, ethyl, propyl and isopropyl, especially preferably methyl. "Lower alkyl” represented by R 2 may be substituted with 1 to 3 same or different halogen atoms.
- substiruents include fluorine, chlorine and bromine atoms.
- Lower alkyl groups substituted with 1 to 3 same or different halogen atoms include, e.g., fluoromethyl, chloromethyl, bromomethyl and trifluoromethyl.
- R 2 is preferably methyl or fluoromethyl, more preferably methyl.
- R 3 and R 4 each independently represent lower alkyl.
- Lower alkyl groups represented by R 3 and R 4 include the same groups as the lower alkyl defined above.
- lower alkyl examples include methyl, ethyl, propyl and isopropyl.
- the lower alkyl group may be same or different.
- R 3 and R 4 be methyl.
- R 5 is a group selected from the group consisting of:
- phenyl which may be substituted with 1 to 3 same or different groups selected from the group consisting of halogen atoms, lower alkoxy and trifluoromethyl;
- heteroaryl selected from the group consisting of pyridinyl, pyrazinyl, imidazolyl, thiazolyl, thienyl and oxazolyl, which heteroaryl may be substituted with 1 to 3 same or different halogen atoms or lower alkyl groups which may be substituted with 1 to 3 same or different halogen atoms;
- Phenyl represented by R 5 may be substituted with 1 to 3 same or different groups selected from the group consisting of halogen atoms, lower alkoxy and trifluoromethyl.
- Halogen atoms of the substituents include the same groups as the halogen atoms defined above.
- Lower alkoxy groups of the substituents include the same groups as the lower alkoxy defined above, specifically, e.g., methoxy, ethoxy, propoxy and isopropoxy.
- Heteroaryl selected from the group consisting of pyridinyl, pyrazinyl, imidazolyl, thiazolyl, thienyl and oxazolyl, represented by R 5 may be substituted with 1 to 3 same or different halogen atoms or lower alkyl groups.
- Halogen atoms of the substituents include the same groups as the halogen atoms defined above, specifically, e.g., fluorine, chlorine, bromine and iodine atoms.
- Lower alkyl groups of the substituents include the same groups as the lower alkyl defined above, specifically, e.g., methyl, ethyl, propyl, isopropyl and butyl.
- the lower alkyl of the substituents may be also substituted with 1 to 3 same or different halogen atoms.
- Specific examples of the lower alkyl substituted with 1 to 3 same or different halogen atoms include trifluoromethyl.
- heteroaryl groups selected from the group consisting of pyridinyl, pyrazinyl, imidazolyl, thiazolyl, thienyl and oxazolyl represented by R 5 , which heteroaryl may be substituted with 1 to 3 same or different halogen atoms or lower alkyl groups which may be substituted with 1 to 3 same or different halogen atoms
- the heteroaryl groups selected from the group consisting of the pyridinyl and the imidazolyl, which heteroaryl may be substituted with 1 or 2 same or different groups selected from the group consisting of fluorine, chlorine and methyl groups are preferred, among which 5-fluoro-2-pyridinyl and 1 -methyl-2-imidazolyl are more preferred.
- -O-C 3 _ 6 branched lower alkyl represented by R 5 refers to a group having the C 3-6 branched-chain lower alkyl defined above bound to oxygen and specifically encompass, e.g., isopropoxy, sec-butoxy, tert-butoxy and 1-ethylpropoxy.
- the -C)-C 3-6 branched lower alkyl may be substituted with 1 to 3 same or different halogen atoms.
- Halogen atoms of the substituents include the same groups as the halogen atoms defined above, specifically, e.g., fluorine, chlorine, bromine and iodine atoms.
- C 3 _ 7 cycloalkyl groups represented by R 5 include the C 3 _ 7 cycloalkyl defined above, specifically, e.g., cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and , cycloheptyl.
- the C 3-7 cycloalkyl may be substituted with trifluoromethyl.
- C 3 . 7 cycloalkyl which may be substituted with trifluoromethyl represented by R 5 , l-(trifluoromethyl)cyclopropyl or 4-trifiuoromethylcyclohexyl is preferred.
- R 5 is preferably a group selected from the group consisting of phenyl, 4-chlorophenyl, 4-fluorophenyl, 3,4-difluorophenyl, 4-difluoromethoxyphenyl, 4-trifiuoromethoxyphenyl, 5-fluoro-2-pyridinyl, 2-fluoro-4-pyridinyl, tert-butoxy, l-(trifluoromethyl)cyclopropyl and 4-trifluoromethylcyclohexyl, more preferably a group selected from the group consisting of phenyl, 4-fluorophenyl, 4-difluoromethoxyphenyl, 4-trifluoromethoxyphenyl, 5-fluoro-2-pyridinyl, l-(trifiuoromethyl)cyclopropyl and tert-butoxy.
- m is an integer of from 0 to 2, where it is preferred that m be 1.
- the formula (I) are preferably groups selected from the group consisting of 4-trifluoromethoxyphenyl, 3,5-dichlorophenyl, 2-chlorophenyl, 4-fluoro-3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 2-fluorophenyl, 2-trifluoromethoxyphenyl, 4-trifluoromethoxyphenyl, 3,5-difluorophenyl, 3,4-dichlorophenyl, 3,5-dichlorophenyl, 4-chlorophenyl, 4-chloro-3 -fluorophenyl, 3,4-difluorophenyl, 3-methylphenyl, 3-trifluoromethoxyphenyl, 3,5-bis(trifluoromethyl)phenyl and 3-chloro-5-fluorophenyl.
- examples of compounds according to the present invention include, but are not limited to,
- any aspects of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , p, q and m as described above may be combined.
- This step is a process for producing a compound (3) by reacting a compound (1) with a compound (2) in the presence of Lewis acid.
- Lewis acids as used in this step include aluminum chloride, zinc chloride, boron trichloride and mixtures thereof.
- An amount of Lewis acid used is typically 1-5 equivalents, preferably 1-2 equivalents, per equivalent of the compound (1).
- An amount of the compound (2) used is typically 1-3 equivalents, preferably 1-1.5 equivalents, per equivalent of the compound (1).
- any solvent may be used in this step, examples of which include dichloromethane and dichloroethane.
- the reaction temperature is typically 0-150 0 C, preferably 40-80 0 C.
- the reaction time is typically 1-48 hours, preferably 1-12 hours.
- the compound (3) obtained in such a manner may be isolated and purified by well-known separation and purification measures such as concentration, vacuum concentration, reprecipitation, solvent extraction, crystallization and chromatography, or the isolation and purification may be omitted to subject the compound (3) to the subsequent step.
- separation and purification measures such as concentration, vacuum concentration, reprecipitation, solvent extraction, crystallization and chromatography, or the isolation and purification may be omitted to subject the compound (3) to the subsequent step.
- This step is a process for producing a compound (5) by reacting the compound (3) with an amino-protected ⁇ -(l-benzotriazolyl)glycine derivative (4).
- typical amide formation reaction may be performed by methods as described in documents (e.g., Nobuo Izumiya, et al.: Peptide Gosei no Kiso to Jikken (Fundamentals and Experiments of Peptide Synthesis), Maruzen (1983); Comprehensive Organic Synthesis, Vol. 6, Pergamon Press (1991), etc.), other methods known in the art or combinations thereof, that is, by using a condensation agent that is well known to those skilled in the art, or by an ester activation method, a mixed anhydride method, an acid chloride method, a carbodiimide method, etc., which can be used by those skilled in the art.
- amide formation reagents include thionyl chloride, oxalyl chloride, N,N-dicyclohexylcarbodiimide, l-methyl-2-bromopyridinium iodide,
- Bases as used include ternary aliphatic amines such as trimethylamine, triethylamine, N,N-diisopropylethylamine, N-methylmorpholine, N-methylpyrrolidine, N-methylpiperidine, N,N-dimethylaniline, l,8-diazabicyclo[5.4.0]undeca-7-en (DBU) and l,5-azabicyclo[4.3.0]nona-5-en (DBN); and aromatic amines such as pyridine, 4-dimethylaminopyridine, picoline, lutidine, quinoline and isoquinoline; especially preferably, N-methylmorpholine.
- ternary aliphatic amines such as trimethylamine, triethylamine, N,N-diisopropylethylamine, N-methylmorpholine, N-methylpyrrolidine, N-methylpiperidine, N,N-dimethylaniline, l,8-di
- Condensation adjuvants as used include, for example, N-hydroxybenzotriazole hydrate, N-hydroxy succinimide, N-hydroxy-5-norbornen-2,3-dicarboximide and
- 3-hydroxy-3,4-dihydro-4-oxo-l,2,3-benzotriazole especially preferably, e.g., N-hydroxybenzotriazole, etc.
- Protective groups Pro for the amino group of the compound (4) include groups as described in documents (e.g., T. W. Green: Protective Groups in Organic Synthesis; Second Edition, John Wiley & Sons (1991), etc.), specifically, e.g., benzyloxycarbonyl.
- An amount of the compound (3) used is typically 1-10 equivalents, preferably 1-3 equivalents, per equivalent of the compound (4) or a reactive derivative thereof.
- An amount of the base used is typically 1-10 equivalents, preferably 1-5 equivalents, depending on the types of a compound and a solvent used and other reaction conditions, per equivalent of the compound (4).
- reaction solvents that can be used in this step, include, but are not limited to, e.g., inactive solvents; specifically, e.g., chloroform, 1 ,2-dichloroethane, xylene, toluene, 1,4-dioxane, tetrahydrofuran and dimethoxyethane or mixed solvents thereof, among which tetrahydrofuran is preferred.
- the reaction time is typically 0.5-96 hours, preferably 3-24 hours.
- the reaction temperature is typically from 0 0 C to the boiling point of a solvent, preferably from room temperature to 80 0 C.
- One or a combination of two or more of bases, amide formation reagents and condensation adjuvants as used in this step may be used.
- the compound (5) obtained in such a manner may be isolated and purified by well-known separation and purification measures such as concentration, vacuum concentration, crystallization, solvent extraction, reprecipitation and chromatography, or the isolation and purification may be omitted to subject the compound (5) to the subsequent step.
- This step is a process of obtaining an aminoketone derivative by reacting the compound (5) with ammonia and thereafter cyclizing the aminoketone derivative with an acid catalyst to produce a compound (6).
- An amount of ammonia used is typically 1-100 equivalents, preferably 10-50 equivalents per equivalent of the compound (5).
- reaction temperature is typically 0-100 0 C, preferably 20-50 0 C.
- the reaction time is typically 1-24 hours, preferably 1-12 hours.
- (A) may be isolated and purified by well-known separation and purification measures such as concentration, vacuum concentration, reprecipitation, solvent extraction, crystallization and chromatography, or the isolation and purification may be omitted to subject the compound (A) to the subsequent step.
- separation and purification measures such as concentration, vacuum concentration, reprecipitation, solvent extraction, crystallization and chromatography, or the isolation and purification may be omitted to subject the compound (A) to the subsequent step.
- the compound (A) is then cyclized in the presence of an acid catalyst to produce the compound (6).
- Acid catalysts as used in this step specifically include, e.g., acetic acid and ammonium acetate.
- An amount of the acid catalyst used is typically 0.1-10 equivalents, preferably 0.1-1 equivalent per equivalent of the compound (A).
- any reaction solvent may be used, examples of which include water, methanol, ethanol, methylene chloride, dimethylformamide and acetic acid.
- the reaction time is typically 0.5-24 hours, preferably 0.5-12 hours.
- the reaction temperature is typically 0-100 0 C, preferably 0-50 0 C.
- the compound (6) obtained in such a manner may be isolated and purified by well-known separation and purification measures such as concentration, vacuum concentration, reprecipitation, solvent extraction, crystallization and chromatography, or the isolation and purification may be omitted to subject the compound (6) to the subsequent step.
- This step is a process of producing a compound (8) by reacting the compound (6) with the compound (7) in the presence of base.
- Bases as used include, for example, sodium-tert-pentoxide, sodium-tert-butoxide, potassium-tert-butoxide and sodium hydride.
- An amount of the base used is typically 1-3 equivalents, preferably 1-1.5 equivalents, per equivalent of the compound (6).
- X in the compound (7) represents a leaving group, of which examples include bromine and iodine atoms.
- An amount of the compound (7) used is typically 1-3 equivalents, preferably 1-1.5 equivalents, per equivalent of the compound (6).
- any reaction solvent may be used, examples of which include dimethylformamide and tetrahydrofuran.
- the reaction time is typically 1-24 hours, preferably 1-12 hours.
- the reaction temperature is typically from 0-100 0 C, preferably 0-50 0 C.
- the compound (8) obtained in such a manner may be isolated and purified by well-known separation and purification measures such as concentration, vacuum concentration, reprecipitation, solvent extraction, crystallization and chromatography, or the isolation and purification may be omitted to subject the compound (8) to the subsequent step.
- Step 5 This step is a process of producing a compound (9) by removing a protective group Pro for the amino group of the compound (8).
- reaction in this step can be carried out by methods as described in documents (e.g., T. W. Green: Protective Groups in Organic Synthesis, Second Edition, John Wiley & Sons (1991), etc.), methods equivalent thereto or combinations of these with usual methods.
- the protective group may be removed with, e.g., hydrogen bromide-acetic acid solution.
- Step 6 This step is a process for producing a compound (I) by reacting the compound (9) with a compound (10).
- typical amide formation reaction may be performed by methods as described in documents (e.g., Nobuo Izumiya, et al.: Peptide Gosei no Kiso to Jikken (Fundamentals and Experiments of Peptide Synthesis), Maruzen (1983); Comprehensive Organic Synthesis, Vol. 6, Pergamon Press (1991), etc.), other methods known in the art or combinations thereof, that is, by using a condensation agent that is well known to those skilled in the art, or by an ester activation method, a mixed anhydride method, an acid chloride method, a carbodiimide method, etc., which can be used by those skilled in the art.
- amide formation reagents include thionyl chloride, oxalyl chloride, N,N-dicyclohexylcarbodiimide, l-methyl-2-bromopyridinium iodide, N,N'-carbonyldiimidazole, diphenylphosphoryl chloride, diphenylphosphoryl azide, N,N'-disuccinimidyl carbonate, N,N'-disuccinimidyl oxalate, l-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, ethyl chloroformate, isobutyl chloroformate and benzotriazol-l-yl-oxy-tris(dimethylamino)phosphonium hexafluorophosphate; especially preferably, e.g., thionyl chloride, l-ethyl-3-(3-dimethylamino)
- Bases as used include ternary aliphatic amines such as trimethylamine, triethylamine, N,N-diisopropylethylamine, N-methylmorpholine, N-methylpyrrolidine, N-methylpiperidine,
- aromatic amines such as pyridine, 4-dimethylaminopyridine, picoline, lutidine, quinoline and isoquinoline; especially preferably, e.g., ternary aliphatic amines, etc., particularly preferably, e.g., trimethylamine, N,N-diisopropylethylamine, etc.
- Condensation adjuvants as used include, for example, N-hydroxybenzotriazole hydrate,
- N-hydroxy succinimide N-hydroxy-5-norbornen-2,3-dicarboximide and 3-hydroxy-3,4-dihydro-4-oxo-l,2,3-benzotriazole; especially preferably, e.g., N-hydroxybenzotriazole, etc.
- An amount of the compound (9) used is typically 1-10 equivalents, preferably 1-3 equivalents, per equivalent of the compound (10) or a reactive derivative thereof.
- An amount of the base used is typically 1-10 equivalents, preferably 1-5 equivalents per equivalent of the compound (10) or a reactive derivative thereof.
- reaction solvents that can be used in this step, include, but are not limited to, e.g., inactive solvents; specifically, e.g., methylene chloride, chloroform, 1,2-dichloroethane, dimethylformamide, ethyl acetate, methyl acetate, acetonitrile, benzene, xylene, toluene, 1,4-dioxane, tetrahydrofuran and dimethoxyethane or mixed solvents thereof; preferably, e.g., methylene chloride, chloroform, 1,2-dichloroethane, acetonitrile and N,N-dimethylformamide, from the viewpoint of ensuring preferable reaction temperature.
- inactive solvents specifically, e.g., methylene chloride, chloroform, 1,2-dichloroethane, dimethylformamide, ethyl acetate, methyl acetate, acetonitrile, benzen
- the reaction time is typically 0.5-96 hours, preferably 3-24 hours.
- the reaction temperature is typically from 0 0 C to the boiling point of a solvent, preferably from room temperature to 80 0 C.
- One or a combination of two or more of bases, amide formation reagents and condensation adjuvants as used in this step may be used.
- the compound (I) obtained in such a manner may be isolated and purified by well-known separation and purification measures such as concentration, vacuum concentration, crystallization, solvent extraction, reprecipitation and chromatography.
- the l,4-benzodiazepine-2-on derivative in accordance with the present invention may be present as a pharmaceutically acceptable salt, which may be produced according to usual methods using the compound (I).
- acid addition salts examples include hydrohalic acid salts such as hydrochloride, hydrofluorate, hydrobromide and hydroiodide; inorganic acid salts such as nitride, perchlorate, sulfate, phosphate and carbonate; lower alkyl sulfonate salts such as methanesulfonate, trifluoromethanesulfonate and ethanesulfonate; aryl sulfonates such as benzenesulfonate and p-toluenesulfonate; organic salts such as fumarate, succinate, citrate, tartrate, oxalate and maleate; and acid addition salts of organic acids, e.g., amino acids, such as glutamate and aspartate.
- hydrohalic acid salts such as hydrochloride, hydrofluorate, hydrobromide and hydroiodide
- inorganic acid salts such as nitride, perchlorate,
- the compound according to the present invention When the compound according to the present invention has an acidic group, such as carboxyl, in the group, the compound can be also converted into a corresponding pharmaceutically acceptable salt by processing the compound with base.
- base addition salts include alkali metal salts such as sodium and potassium; alkaline earth metal salts such as calcium and magnesium; ammonium salts; and salts of organic bases such as guanidine, triethylamine and dicyclohexylamine.
- the compound according to the present invention may be present in the form of a free compound or any hydrate or solvate of a salt thereof.
- a salt or ester can be also converted into a free compound by a usual method.
- a stereoisomer or a tautomer such as an optical isomer, a diastereoisomer or a geometrical isomer, is sometimes present depending on the form of a substituent. It will be appreciated that these isomers are encompassed entirely by compounds according to the present invention. Furthermore, it will be appreciated that any mixture of these isomers is encompassed by compounds according to the present invention.
- a compound represented by the general formula (I) may be orally or parenterally administered and is formulated into a form suitable for such administration to provide an agent for treating and/or preventing hyperlipidemia, diabetes and obesity using the compound.
- a pharmaceutically acceptable additive may be also added, depending on a dosage form, to produce various preparations, followed by administration of the preparations.
- Additives in this case for which various additives that are usually used in the field of formulation, include, for example, gelatine, lactose, saccharose, titanium oxide, starch, microcrystalline cellulose, hydroxypropyl methylcellulose, carboxymethyl cellulose, corn starch, microcrystalline wax, white petrolatum, magnesium aluminometasilicate, anhydrous calcium phosphate, citric acid, trisodium citrate, hydroxypropylcellulose, sorbitol, sorbitan fatty acid esters, polysorbates, sucrose fatty acid esters, polyoxyethylene, hydrogenated castor oil, polyvinyl pyrrolidone, magnesium stearate, light anhydrous silicic acid, talc, vegetable oil, benzyl alcohol, gum arabic, propylene glycol, polyalkylene glycol, cyclodextrin, hydroxypropyl cyclodextrin, etc.
- Examples of dosage forms as formulated mixtures with such additives include solid preparations such as tablets, capsules, granules, powders and suppositories; and liquid preparations such as syrups, elixirs and injections, which can be prepared according to typical methods in the field of formulation. Further, the liquid preparations may be in the form of dissolution or suspension in water or another appropriate medium just before use. Particularly, the injections may be also dissolved or suspended in a physiological saline solution or a glucose solution as needed, and a buffer or a preservative may be further added to the mixture. Such preparations may contain the compound according to the present invention at a rate of 1.0-100%, preferably 1.0-60%, by weight of the total drug. Such preparations may also contain other therapeutically-effective compounds.
- the compound according to the present invention may be used in combination with a drug efficacious for hyperlipidemia, diabetes, obesity or the like (hereinafter referred to as "concomitant drug").
- a drug efficacious for hyperlipidemia, diabetes, obesity or the like hereinafter referred to as "concomitant drug”
- Such drugs may be administered concurrently, separately or sequentially in treatment or prevention of the diseases.
- they may be formed into a pharmaceutical composition in a single dosage form.
- a composition containing the compound according to the present invention and a concomitant drug in different packages may be administered concurrently, separately or sequentially to an administration subject. They may be also administered at intervals.
- a dose of a concomitant drug may be based on a dose which is clinically used and may be selected appropriately depending on an administration subject, an administration route, a disease, a combination and the like.
- a dosage form of such a concomitant drug is not particularly limited, and it may be any form in which the compound according to the present invention and a concomitant drug are combined when they are administered.
- Examples of such dosage forms include (1) administration of a single pharmaceutical preparation obtained by formulating the compound according to the present invention and a concomitant drug concurrently; (2) coadministration via the same administration route of two pharmaceutical preparations obtained by formulating the compound according to the present invention and a concomitant drug separately; (3) administration at an interval via the same administration route of two pharmaceutical preparations obtained by formulating the compound according to the present invention and a concomitant drug separately; (4) coadministration via different administration routes of two pharmaceutical preparations obtained by formulating the compound according to the present invention and a concomitant drug separately; and (5) administration at an interval via different administration routes of two pharmaceutical preparations obtained by formulating the compound according to the present invention and a concomitant drug separately (e.g.
- a dosage regimen of it depends on the sex, age, body weight and severity of condition of a patient; and the type and range of desired therapeutic effect.
- the usual dosage regimen of it is 0.01-100 mg/kg per day, preferably 0.03-1 mg/kg per day in one dose or several divided doses.
- parenteral administration it is 0.001-10 mg/kg per day, preferably 0.001-0.1 mg/kg per day in one dose or several divided doses.
- Any appropriate administration route may be used to administer an effective amount of the compound according to the present invention to a mammal, particularly to a human.
- oral, rectum, local, intravenous, ocular, lung and nasal administration routes may be used.
- dosage forms include tablets, troches, powders, suspensions, solutions, capsules, creams, aerosols, etc., in which tablets for oral use are preferred.
- compositions for oral use any typical pharmaceutical medium may be used, examples of which include water, glycol, oils, alcohols, flavoring agents, preservatives, coloring agents, etc.
- examples of pharmaceutical media include suspensions, elixirs and solutions, and examples of carriers include starches, sugars, microcrystalline celluloses, diluents, granulating agents, lubricants, binders and disintegrating agents.
- examples of pharmaceutical media include powders, capsules and tablets. Particularly, the solid compositions for oral use are preferred.
- compositions in accordance with the present invention suitable for oral administration include capsules, cachets or tablets, each containing a predetermined amount of an active ingredient, such as a powder or granules, or as an aqueous liquid, a non-aqueous liquid, an oil-in- water emulsion or a water-in-oil liquid emulsion.
- Such compositions may be prepared by any pharmaceutical method, including a method of combining an active ingredient with a carrier consisting of one or more necessary constituents.
- Molded tablets can be prepared by molding, in a suitable machine, a mixture of the powdered compound moistened with an inert liquid diluent.
- each tablet contains about 1 mg to 1 g of active ingredient
- each cachet or capsule contains about 1 mg to 500 mg of active ingredient.
- the compound of the formula (I) may be used in combination with other drugs used in treatment/prevention/delay of onset of hyperlipidemia, diabetes or obesity as well as diseases or conditions associated therewith.
- the other drugs may be administered in an administration route or a dose that is typically used, concurrently with or separately from the compound of the formula
- the pharmaceutical composition according to the present invention contains the compound of the formula (I) as well as other active ingredients that are one or more.
- active ingredients which are used in combination with the compound of the formula (I) include, but are not limited to, the following (a) to (J):
- glucokinase activators e.g., glucokinase activators
- biguanides e.g., buformin, metformin and phenformin
- ⁇ -glucosidase inhibitors e.g., voglibose, miglitol and acarbose
- insulin secretagogues e.g., acetohexamide, carbutamide, chlorpropamide, glybenclamide, gliclazide, glimepiride, glipizide, gliquidone, glisoxepide, glyburide, glyhexamide, glypinamide, phenbutamide, tolazamide, tolbutamide, tolcyclamide, nateglinide and repaglinide
- DPP-IV dipeptidyl peptidase-IV
- glucose uptake facilitators which may be administered separately or in the same pharmaceutical composition.
- a weight ratio of the compound of the formula (I) to a second active ingredient varies within wide limits and further depends on the effective dose of each active ingredient. Accordingly, for example, when the compound of the formula (I) is used in combination with a PPAR agonist, a weight ratio of the compound of the formula (I) to the PPAR agonist is generally about 1000:1 to 1:1000, preferably about 200:1 to 1 :200. Combinations of the compound of the formula (I) and other active ingredients are within the above-mentioned range; and in any case, the effective dose of each active ingredient should be used.
- the present invention is described below in more detail referring to Examples and Reference Examples, but is not limited thereto.
- the compound according to the present invention or a pharmaceutically acceptable salt thereof has strong DGATl inhibitory activity and is thus useful for treating and/or preventing hyperlipidemia, diabetes and obesity. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and alterations may occur depending on design requirements and other factors insofar as they are within the scope of the appended claims or the equivalents thereof.
- Wakogel (registered trademark) C-300, made by Wako Pure Chemical Industries Ltd., or
- reaction solution was extracted with chloroform, dried over sodium sulfate, filtered, and thereafter concentrated.
- the resultant crude product was purified by silica gel column chromatography and thereafter crystallized to yield the title compound (2.44 g, 7.8 mmol) as a yellow crystal.
- reaction mixture was concentrated and dissolved in 40 ml of acetic acid, the mixture was stirred for 3 hours, thereafter ammonium acetate (5.8 g, 75 mmol) was added, and the mixture was further stirred for 1 hour.
- the reaction liquid was diluted with ethyl acetate and was basif ⁇ ed using a saturated aqueous sodium bicarbonate solution. After extraction, the organic layer was washed with a saturated saline solution, dried over sodium sulfate, filtered, concentrated, purified using silica gel chromatography, and thereafter crystallized with ethyl acetate and hexane to yield the title compound (4.8 g, 9.57 mmol) as a colorless solid.
- Benzyl ⁇ 7-fluoro-2-oxo-5-[4-(trifluoromethoxy)benzyl]-2,3-dihydro-lH-l,4-benzodiazepin -3-yl)carbamate (5.0 g, 10 mmol) was dissolved in DMF 50 ml, sodium tert-pentoxide (1.15 g, 10.5 mmol) and methyl iodide (1.49 g, 10.5 mmol) were sequentially added under ice-cooling, the mixture was stirred under ice-cooling for 1 hour, thereafter sodium tert-pentoxide (0.11 g, 1.0 mmol) and methyl iodide (0.14 g, 1.0 mmol) were sequentially added again, and the mixture was further stirred under ice-cooling for 30 minutes.
- the mixture was quenched using a saturated aqueous ammonium chloride solution, diluted with ethyl acetate, and thereafter washed with water and saturated saline solution.
- the washed matter was dried over sodium sulfate, thereafter filtered, concentrated, and purified by silica gel chromatography to yield the title compound (5.06 g, 9.8 mmol) as a colorless amorphous.
- DGATlF 5'-ATGGGCGACCGCGGCAGCTC ⁇ '
- DGATlR 5'-CAGGCCTCTGCCGCTGGGGCCTC ⁇ '
- the amplified human DGATl genes were introduced into a yeast expression vector pPICZA (Invitrogen).
- the resultant expression plasmid was introduced into an yeast ⁇ Pichia pastris) by electroporation to produce a recombinant yeast.
- the recombination yeast was cultured in the presence of 0.5% methanol for 72 hours, and the cells were crushed using glass beads in 10 mM Tris pH 7.5, 250 mM sucrose and 1 mM EDTA, followed by adjusting the membrane fraction by centrifugation to use the adjusted membrane fraction as an enzyme source.
- ⁇ DGAT 1 inhibitory activity test >
- reaction liquid having the following composition: 100 mM Tris pH 7.5, 100 mM MgCl 2 , 100 mM sucrose, 40 ⁇ M dioelin, 15 ⁇ M [ 14 C]-oleoyl-CoA, 0.25 ⁇ g of test substance, DGATl -expressed yeast membrane fraction, was added, and the mixture having a volume of 100 ⁇ l was incubated at room temperature for 30 minutes.
- 100 ⁇ l of 2-propanol/heptan/H 2 O (80:20:2) was added, the mixture was stirred well, followed by adding 200 ⁇ l of heptane and further stirring the mixture.
- Inhibition rate 100 - (radioactivity in case of addition of test compound - background) /
- the DGATl inhibitory activity of the compound according to the present invention by the aforementioned method is shown below.
- the compound according to the present invention has excellent DGATl inhibitory activity in consideration of an index of IC 50 .
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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AU2010216632A AU2010216632A1 (en) | 2009-02-17 | 2010-02-12 | 1,4-benzodiazepin-2-on derivatives |
EP10743885A EP2398781A1 (en) | 2009-02-17 | 2010-02-12 | 1,4-benzodiazepin-2-on derivatives |
US13/144,090 US20120015938A1 (en) | 2009-02-17 | 2010-02-12 | 1,4-benzodiazepin-2-on derivatives |
JP2011549841A JP2012517997A (en) | 2009-02-17 | 2010-02-12 | 1,4-benzodiazepin-2-one derivatives |
CA2752739A CA2752739A1 (en) | 2009-02-17 | 2010-02-12 | 1,4-benzodiazepin-2-on derivatives |
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JP2009-033877 | 2009-02-17 | ||
JP2009033877 | 2009-02-17 |
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WO2010095766A1 true WO2010095766A1 (en) | 2010-08-26 |
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PCT/JP2010/053178 WO2010095766A1 (en) | 2009-02-17 | 2010-02-12 | 1,4-benzodiazepin-2-on derivatives |
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US (1) | US20120015938A1 (en) |
EP (1) | EP2398781A1 (en) |
JP (1) | JP2012517997A (en) |
AU (1) | AU2010216632A1 (en) |
CA (1) | CA2752739A1 (en) |
WO (1) | WO2010095766A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US8299061B2 (en) | 2009-12-10 | 2012-10-30 | Eli Lilly And Company | Inhibitors of diacylglycerol acyltransferase |
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2010
- 2010-02-12 AU AU2010216632A patent/AU2010216632A1/en not_active Abandoned
- 2010-02-12 WO PCT/JP2010/053178 patent/WO2010095766A1/en active Application Filing
- 2010-02-12 CA CA2752739A patent/CA2752739A1/en not_active Abandoned
- 2010-02-12 US US13/144,090 patent/US20120015938A1/en not_active Abandoned
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Cited By (1)
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US8299061B2 (en) | 2009-12-10 | 2012-10-30 | Eli Lilly And Company | Inhibitors of diacylglycerol acyltransferase |
Also Published As
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US20120015938A1 (en) | 2012-01-19 |
AU2010216632A1 (en) | 2011-08-04 |
CA2752739A1 (en) | 2010-08-26 |
JP2012517997A (en) | 2012-08-09 |
EP2398781A1 (en) | 2011-12-28 |
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