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).

  • Patent number: 7655633
    Abstract: The present invention provides nitrogen-containing heterocyclic derivatives represented by the general formula: wherein X1 represents N or CR1; X2 represents N or CR2; X3 represents N or CR3; X4 represents N or CR4; and with the proviso that one or two of X1 to X4 represent N; R represents optionally substituted C3-8 cycloalkyl, optionally substituted C6-10 aryl, etc.; R1 to R4 represent H, a halogen atom, etc.) or pharmaceutically acceptable salts thereof, or prodrugs thereof, which exert an excellent inhibitory activity in human SGLT2 and are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications, obesity or the like, pharmaceutical compositions comprising the same, and medicinal uses thereof.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 2, 2010
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Kenji Katsuno, Masayuki Isaji
  • Patent number: 7576063
    Abstract: 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: Grant
    Filed: September 30, 2003
    Date of Patent: August 18, 2009
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hideki Fujikura, Norihiko Kikuchi, Shigeki Tazawa, Tokuhisa Yamato, Masayuki Isaji
  • Patent number: 7576064
    Abstract: The present invention provides pyrazole derivatives represented by the general formula: wherein R1 represents H, an optionally substituted C1-6 alkyl, etc.; one of Q and T represents a group selected from the following: and the other represents -Z-Ar wherein Z represents —O—, —S—, etc.; Ar represents an optionally substituted C6-10 aryl, etc.; R represents an optionally substituted C3-8 cycloalkyl, an optionally substituted C6-10 aryl, etc., pharmaceutically acceptable salts thereof, and prodrugs thereof, which exhibit an excellent inhibitory activity in human sodium/glucose cotransporter (SGLT) 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 selected from glucose, fructose and mannose (diabetes, postprandial hyperglycemia, impaired glucose tolerance, diabetic complications, etc.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: August 18, 2009
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Norihiko Kikuchi, Hideki Fujikura, Shigeki Tazawa, Tokuhisa Yamato, Masayuki Isaji
  • Patent number: 7541341
    Abstract: The present invention provides glucopyranosyloxybenzylbenzene derivatives represented by the general formula: wherein P represents a hydrogen atom or a group forming a prodrug; R1 represents a hydrogen atom, an optionally substituted amino group, a carbamoyl group, an optionally substituted lower alkyl group, an optionally substituted lower alkoxy group, etc.; R2 represents a hydrogen atom or a lower alkyl group; and R3 represents an optionally substituted lower alkyl group, an optionally substituted lower alkoxy group, an optionally substituted lower alkylthio group, etc., which have an improved oral absorption, and exert an inhibitory activity in human SGLT2, and therefore are useful as drugs for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications or obesity, or pharmaceutically acceptable salts thereof, and pharmaceutical uses thereof.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: June 2, 2009
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Nobuhiko Fushimi, Kazuya Tatani, Hideki Fujikura, Toshihiro Nishimura, Minoru Fujioka, Takeshi Nakabayashi, Masayuki Isaji
  • Publication number: 20090093419
    Abstract: 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 thereof
    Type: Application
    Filed: July 9, 2008
    Publication date: April 9, 2009
    Applicant: Kissei Pharmaceutical Co. Ltd.
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Takeshi Nakabayashi, Masayuki Isaji
  • Patent number: 7465713
    Abstract: 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 there
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: December 16, 2008
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Takeshi Nakabayashi, Masayuki Isaji
  • Patent number: 7465712
    Abstract: The present invention relates to glucopyranosyloxybenzylbenzene derivatives represented by the general formula: wherein R1 represents a hydrogen atom or a hydroxy(lower alkyl) group; and R2 represents a lower alkyl group, a lower alkoxy group, a lower alkylthio group, a hydroxy(lower alkyl) group, a hydroxy(lower alkoxy) group, a hydroxy(lower alkylthio) group etc., and salts thereof, which have an excellent inhibitory activity in human SGLT2 and are useful as agents for the prevention or treatment of diabetes, obesity etc., and intermediates thereof.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: December 16, 2008
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Kazuya Tatani
  • Patent number: 7429568
    Abstract: 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 thereo
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: September 30, 2008
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Takeshi Nakabayashi, Masayuki Isaji
  • Patent number: 7393838
    Abstract: 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 there
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: July 1, 2008
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Takeshi Nakabayashi, Masayuki Isaji
  • Patent number: 7294618
    Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: wherein R1, R2 and R3 represent a hydrogen atom or a halogen atom; R4 represents a lower alkyl group or a halo(lower alkyl) group; and R5 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a lower alkylthio group, etc., a pharmaceutically acceptable salt thereof or a prodrug thereof., which exert an excellent inhibitory activity in human SGLT2, and therefore are useful as drugs for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications or obesity, pharmaceutically acceptable salts thereof or prodrugs thereof, production intermediates thereof and pharmaceutical uses thereof.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: November 13, 2007
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Nobuhiko Fushimi, Hideki Fujikura, Toshihiro Nishimura, Kenji Katsuno, Masayuki Isaji
  • Patent number: 7271153
    Abstract: The present invention provides nitrogen-containing heterocyclic derivatives represented by the general formula: wherein X1 and X3 independently represent N or CH; X2 represents N or CR2; X4 represents N or CR3; and with the proviso that one or two of X1, X2, X3 and X4 represent N; R1 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a lower alkylthio group, a lower alkoxy-substituted (lower alkyl) group, a lower alkoxy-substituted (lower alkoxy) group, a lower alkoxy(lower alkoxy)-substituted (lower alkyl) group, a cyclic lower alkyl group, a halo(lower alkyl) group or a group represented by the general formula: HO-A- wherein A represents a lower alkylene group, a lower alkyleneoxy group or a lower alkylenethio group; R2 represents a hydrogen atom, a halogen atom, a lower alkyl group, a cyclic lower alkyl group, a lower alkoxy group, an amino group, a (lower acyl)amino group, a mono(lower alkyl)amino group or a di(lower alkyl)amino group; and R3 represents a hydrogen a
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: September 18, 2007
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Toshihiro Nishimura, Hideki Fujikura, Nobuhiko Fushimi, Kazuya Tatani, Kenji Katsuno, Masayuki Isaji
  • Publication number: 20070197450
    Abstract: 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: Application
    Filed: March 3, 2005
    Publication date: August 23, 2007
    Inventors: Nobuhiko Fushimi, Masayuki Isaji, Hideki Fujikura
  • Publication number: 20070197449
    Abstract: 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: Application
    Filed: March 3, 2005
    Publication date: August 23, 2007
    Applicant: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Nobuhiko Fushimi, Hideki Fujikura, Masayuki Isaji
  • Publication number: 20070185197
    Abstract: The present invention provides phenol derivatives represented by the following general formula 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, obesity or the like, and pharmaceutical compositions comprising the same, and pharmaceutical uses thereof. In the chemical structure, R1 and R2 represent H, OH, NH2, etc.; R3and R4represent H, OH, a halogen atom, an optionally substituted alkyl group, etc.; ring A represents an aryl group or a heteroaryl group; G represents a group represented by the following general formula (G); E1 represents H or F; and E2 represents H, F, or a methyl group, etc.
    Type: Application
    Filed: March 30, 2005
    Publication date: August 9, 2007
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Masayuki Isaji
  • Patent number: 7217697
    Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: wherein R1 is a hydrogen atom or a hydroxyalkyl group; one of Q and T is a group represented by the general formula; the other is an optionally substituted alkyl group or a cycloalkyl group; and R2 is a halogen atom, a hydroxy group, an optionally substituted alkyl group, an optionally substituted alkoxy group, an alkylthio group, a group of the general formula: -A-R3 wherein A is a single bond, an oxygen atom, a methylene group, an ethylene group, —OCH2— or —CH2O—; and R3 is a cycloalkyl group, a heterocycloalkyl group, an optionally substituted aryl group, an optionally substituted tiazolyl group or an optionally substituted pyridyl group, pharmaceutically acceptable salts thereof or prodrugs thereof, which exert an excellent inhibitory activity in human SGLT1, and therefore are useful as drugs for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic
    Type: Grant
    Filed: May 27, 2002
    Date of Patent: May 15, 2007
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hiroaki Shiohara, Hideki Fujikura, Nobuhiko Fushimi, Fumiaki Ito, Masayuki Isaji
  • Publication number: 20070060531
    Abstract: The present invention provides pyrazole derivatives represented by the general formula: wherein R1 represents H, an optionally substituted C1-6 alkyl, etc.; one of Q and T represents a group selected from the following: , and the other represents -Z-Ar wherein Z represents —O—, —S—, etc.; Ar represents an optionally substituted C6-10 aryl, etc.; R represents an optionally substituted C3-8 cycloalkyl, an optionally substituted C6-10 aryl, etc., pharmaceutically acceptable salts thereof, and prodrugs thereof, which exhibit an excellent inhibitory activity in human sodium/glucose cotransporter (SGLT) 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 selected from glucose, fructose and mannose (diabetes, postprandial hyperglycemia, impaired glucose tolerance, diabetic complications, etc.
    Type: Application
    Filed: June 15, 2004
    Publication date: March 15, 2007
    Inventors: Norihiko Kikuchi, Hideki Fujikura, Shigeki Tazawa, Tokuhisa Yamato, Masayuki Isaji
  • Patent number: 7189702
    Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: wherein one of Q and T represents a group represented by the general formula: while the other represents a lower alkyl group or a halo(lower alkyl) group; R1 represents a hydrogen atom, an optionally substituted lower alkyl group, a lower alkenyl group, a cyclic lower alkyl group, etc.; R2 represents a hydrogen atom, an optionally substituted lower alkyl group, a lower alkoxy group, a lower alkenyl group, a cyclic lower alkyl group, a cyclic lower alkoxy group, etc., which exert an excellent inhibitory activity in human SGLT2, and therefore are useful as drugs for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications or obesity, pharmaceutically acceptable salts thereof or prodrugs thereof, production intermediates thereof and pharmaceutical uses thereof.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: March 13, 2007
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Toshihiro Nishimura, Nobuhiko Fushimi, Hideki Fujikura, Kenji Katsuno, Yoshimitsu Komatsu, Masayuki Isaji
  • Patent number: 7129381
    Abstract: The present invention relates to glucopyranosyl-oxybenzylbenzene derivatives represented by the general formula: wherein R1 represents a hydrogen atom, a hydroxy group, a substituted or unsubstituted amino group, a carbamoyl group, a substituted or unsubstituted(lower alkyl) group, a substituted or unsubstituted(lower alkoxy) group etc.; R2 represents a hydrogen atom or a lower alkyl group; and R3 represents a substituted or unsubstituted(lower alkyl) group, a substituted or unsubstituted(lower alkoxy) group, a substituted or unsubstituted(lower alkylthio) group etc., or pharmaceutically acceptable salts thereof, which have an inhibitory activity in human SGLT2 and are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complication or obesity, pharmaceutical compositions comprising the same and intermediates thereof.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: October 31, 2006
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Nobuhiko Fushimi, Kazuya Tatani, Norihiko Kikuchi, Kenji Katsuno, Masayuki Isaji
  • Patent number: 7115575
    Abstract: The present invention relates to glucopyranosyloxypyrazole derivatives represented by the general formula: wherein R1 represents a hydrogen atom or a lower alkyl group; one of Q1 and T1 represents a group represented by the general formula: while the other represents a lower alkyl group or a halo(lower alkyl) group; and 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, or pharmaceutically acceptable salts thereof, which have an inhibitory activity in human SGLT2 and are useful as agents for the prevention or treatment of diabetes, diabetic complications or obesity, and to pharmaceutical compositions comprising the same and intermediates thereof.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: October 3, 2006
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Kenji Katsuno, Masahiro Hiratochi, Akira Iyobe, Minoru Fujioka, Masayuki Isaji
  • Patent number: 7087579
    Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: wherein one of Q and T represents a group represented by the general formula: while the other represents a lower alkyl group or a halo(lower alkyl) group; R1 represents a hydrogen atom, an optionally substituted lower alkyl group, a lower alkenyl group, a cyclic lower alkyl group, etc.; R2 represents a hydrogen atom, an optionally substituted lower alkyl group, a lower alkoxy group, a lower alkenyl group, a cyclic lower alkyl group, a cyclic lower alkoxy group, etc., which exert an excellent inhibitory activity in human SGLT2, and therefore are useful as drugs for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications or obesity, pharmaceutically acceptable salts thereof or prodrugs thereof, production intermediates thereof and pharmaceutical uses thereof.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: August 8, 2006
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Toshihiro Nishimura, Nobuhiko Fushimi, Hideki Fujikura, Kenji Katsuno, Yoshimitsu Komatsu, Masayuki Isaji