Patents by Inventor Hideki Fujikura
Hideki Fujikura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9023882Abstract: 5-membered heterocyclic derivatives represented by general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof. In the formula (I), T represents nitro, cyano and the like; ring J represents aryl or heteroaryl; Q represents carboxy, 5-tetazolyl and the like; Y represents H, OH, NH2, halogen, haloalkyl and the like; X1 and X2 independently represent CR2 or N; R2 represents H, alkyl and the like; R1 represents halogen, cyano, haloalkyl, A-D-E-G-L-M, —N(-D-L-M)2 and the like, A represents a single bond, O, S and the like; D, G and M independently represent optionally substituted alkylene, cycloalkylene, heterocycloalkylene, arylene, heteroarylene and the like; E and L independently represent a single bond, O, S, COO, SO2 and the like.Type: GrantFiled: June 12, 2012Date of Patent: May 5, 2015Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Patent number: 8993616Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to (aza)indole derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: GrantFiled: May 16, 2013Date of Patent: March 31, 2015Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Patent number: 8829040Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to (aza)indole derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: GrantFiled: February 28, 2014Date of Patent: September 9, 2014Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Publication number: 20140179932Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to (aza)indole derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: ApplicationFiled: February 28, 2014Publication date: June 26, 2014Applicant: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Publication number: 20130252955Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to (aza)indole derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: ApplicationFiled: May 16, 2013Publication date: September 26, 2013Applicant: Kissei Pharmaceutical Co., Ltd.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Patent number: 8466152Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to (aza)indole derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: GrantFiled: May 26, 2011Date of Patent: June 18, 2013Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Publication number: 20120289506Abstract: 5-membered heterocyclic derivatives represented by general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof. In the formula (I), T represents nitro, cyano and the like; ring J represents aryl or heteroaryl; Q represents carboxy, 5-tetazolyl and the like; Y represents H, OH, NH2, halogen, haloalkyl and the like; X1 and X2 independently represent CR2 or N; R2 represents H, alkyl and the like; R1 represents halogen, cyano, haloalkyl, A-D-E-G-L-M, —N(-D-L-M)2 and the like, A represents a single bond, O, S and the like; D, G and M independently represent optionally substituted alkylene, cycloalkylene, heterocycloalkylene, arylene, heteroarylene and the like; E and L independently represent a single bond, O, S, COO, SO2 and the like.Type: ApplicationFiled: June 12, 2012Publication date: November 15, 2012Applicant: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Patent number: 8263622Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal plasma uric acid level and the like. The present invention relates to fused ring derivatives represented by the following formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of plasma uric acid level, prodrugs thereof, salts thereof or the like. In the formula (I), X1 and X2 represent CH or N; ring U represents aryl or heteroaryl; m represents integral number from 0 to 2; n represents integral number from 0 to 3; R1 represents a hydroxy group, amino or C1-6 alkyl; R2 represents C1-6 alkyl, C1-6 alkoxy C1-6 alkyl or the like.Type: GrantFiled: October 14, 2009Date of Patent: September 11, 2012Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Kazuo Shimizu, Masato Iizuka, Hideki Fujikura, Yasushi Takigawa, Masahiro Hiratochi
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Patent number: 8227500Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to 5-membered heterocyclic derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: GrantFiled: April 10, 2008Date of Patent: July 24, 2012Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Patent number: 8058245Abstract: The present invention provides fused heterocyclic derivatives represented by the following general formula (I) or pharmaceutically acceptable salts thereof, or prodrugs thereof, which exhibit an inhibitory activity in human SGLT and are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, postprandial hyperglycemia, impaired glucose tolerance, diabetic complications or obesity, in the formula R1 to R4 represent H, OH, an amino group, etc.; R5 and R6 represent H, OH, a halogen atom, an option ally substituted alkyl group, etc.; Q represents alkylene, alkenylene, etc.; ring A represents an aryl group or a heteroaryl group; the following ring (R1) represents a group represented by the following ring (R2); G represents a group represented by the following general formula (G-1) or (G-2) (E1 represents H, F or OH; and E represents H, F, a methyl group, etc.), and pharmaceutical compositions comprising the same, and pharmaceutical uses thereof.Type: GrantFiled: March 3, 2005Date of Patent: November 15, 2011Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Nobuhiko Fushimi, Masayuki Isaji, Hideki Fujikura
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Publication number: 20110230454Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to (aza)indole derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: ApplicationFiled: May 26, 2011Publication date: September 22, 2011Applicant: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Publication number: 20110207935Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal plasma uric acid level and the like. The present invention relates to fused ring derivatives represented by the following formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of plasma uric acid level, prodrugs thereof, salts thereof or the like. In the formula (I), X1 and X2 represent CH or N; ring U represents aryl or heteroaryl; m represents integral number from 0 to 2; n represents integral number from 0 to 3; R1 represents a hydroxy group, amino or C1-6 alkyl; R2 represents C1-6 alkyl, C1-6 alkoxy C1-6 alkyl or the like.Type: ApplicationFiled: October 14, 2009Publication date: August 25, 2011Applicant: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Kazuo Shimizu, Masato Iizuka, Hideki Fujikura, Yasushi Takigawa, Masahiro Hiratochi
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Patent number: 8003647Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to (aza)indole derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: GrantFiled: April 10, 2008Date of Patent: August 23, 2011Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Publication number: 20110201815Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal plasma uric acid level and the like. The present invention relates to fused heterocyclic derivatives represented by the following formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of plasma uric acid level, prodrugs thereof, salts thereof or the like. In the formula (I), T represents trifluoromethyl, nitro or cyano; ring Q represents heteroaryl; X1 and X2 independently represent CH or N; ring U represents aryl or heteroaryl; m represents integral number from 0 to 2; n represents integral number from 0 to 3; R1 represents a hydroxy group, amino or C1-6 alkyl; R2 represents C1-6 alkyl, C1-6 alkoxy C1-6 alkyl or the like.Type: ApplicationFiled: October 14, 2009Publication date: August 18, 2011Applicant: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Kazuo Shimizu, Masato Iizuka, Hideki Fujikura, Yasushi Takigawa, Masahiro Hiratochi
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Patent number: 7989424Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: wherein R represents a hydrogen atom, a lower alkyl group or a group forming a prodrug; one of Q and T represents a group represented by the general formula: (wherein P represents a hydrogen atom or a group forming a prodrug), while the other represents a lower alkyl group or a halo(lower alkyl) group; R2 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a lower alkylthio group, a halo(lower alkyl) group or a halogen atom; and with the proviso that P does not represent a hydrogen atom when R represents a hydrogen atom or a lower alkyl group, or pharmaceutically acceptable salts thereof, which exert an inhibitory activity in human SGLT2 and have an improved oral absorption, and therefore are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications or obesity, and pharmaceutically acceptable salts thereoType: GrantFiled: July 9, 2008Date of Patent: August 2, 2011Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Takeshi Nakabayashi, Masayuki Isaji
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Patent number: 7888487Abstract: Pyrazole derivatives represented by the general formula: wherein R1 represents H, an optionally substituted C1-6 alkyl group etc.; one of Q and T represents a group selected from the following groups: and the other represents —(CH2)n—Ar wherein Ar represents a substituted C6-10 aryl group, etc., and n represents 0 to 2, R represents an optionally substituted C3-8 cycloalkyl group, etc., pharmaceutically acceptable salts thereof or prodrugs thereof, which exhibit an excellent inhibitory activity in human 1,5-anhydroglucitol/fructose/mannose transporter and are useful as agents for the prevention, inhibition of progression or treatment of a disease associated with the excess uptake of at least a kind of carbohydrates from glucose, fructose and mannose or a disease associated with hyperglycemia and pharmaceutical compositions comprising the same, pharmaceutical uses thereof, and intermediates for production thereof.Type: GrantFiled: August 3, 2009Date of Patent: February 15, 2011Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Hideki Fujikura, Norihiko Kikuchi, Shigeki Tazawa, Tokuhisa Yamato, Masayuki Isaji
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Publication number: 20100227864Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to 5-membered heterocyclic derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: ApplicationFiled: April 10, 2008Publication date: September 9, 2010Applicant: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Patent number: 7732596Abstract: The present invention provides nitrogen-containing fused cyclic derivatives represented by the following general formula or pharmaceutically acceptable salts thereof, or prodrugs thereof, which exhibit an excellent inhibitory activity in human SGLT and are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, postprandial hyperglycemia, impaired glucose tolerance, diabetic complications or obesity, in the formula one of R1 and R4 represents a group represented by the following general formula (S) (in which R5 and R6 represent H, OH, a halogen atom, etc.; Q represents an alkylene group etc.; and ring A represents an aryl group etc.), and the other represents H, OH, an amino group, etc.; R2 and R3 represent H, OH, an amino group, a halogen atom, and an optionally substituted alkyl group, etc.; A1 represents O, S, etc.Type: GrantFiled: March 3, 2005Date of Patent: June 8, 2010Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Nobuhiko Fushimi, Hideki Fujikura, Masayuki Isaji
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Publication number: 20100056521Abstract: The present invention provides compounds useful as agents for the prevention or treatment of a disease associated with abnormal serum uric acid level which has a uricosuric activity or the like. The present invention relates to (aza)indole derivatives represented by the following general formula (I) having xanthine oxidase inhibitory activities and useful as agents for the prevention or treatment of a disease associated with abnormality of serum uric acid level, prodrugs thereof, or salts thereof.Type: ApplicationFiled: April 10, 2008Publication date: March 4, 2010Applicant: KISSEI PHARMACEUTICAL CO., LTD.Inventors: Kazuo Shimizu, Yasushi Takigawa, Hideki Fujikura, Masato Iizuka, Masahiro Hiratochi, Norihiko Kikuchi
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Publication number: 20100029919Abstract: The present invention provides pyrazole derivatives represented by the general formula: wherein R1 represents H, an optionally substituted C1-6 alkyl group etc.; one of Q and T represents a group selected from the following groups: , and the other represents —(CH2)n—Ar wherein Ar represents an optionally substituted C6-10 aryl group or an optionally substituted C1-9 heteroaryl group; and n represents an integral number from 0 to 2, an optionally substituted C1-6 alkoxyl group, an optionally substituted amino group, an optionally substituted C2-9 heterocycloalkyl group or an optionally substituted heterocycle-fused phenyl group; R represents an optionally substituted C3-8 cycloalkyl group, an optionally substituted C6-10 aryl group etc.Type: ApplicationFiled: August 3, 2009Publication date: February 4, 2010Applicant: Kissei Pharmaceutical Co., Ltd.Inventors: Hideki Fujikura, Norihiko Kikuchi, Shigeki Tazawa, Tokuhisa Yamato, Masayuki Isaji