Patents by Inventor Masayuki Isaji

Masayuki Isaji 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).

  • Publication number: 20050261205
    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: Application
    Filed: July 27, 2005
    Publication date: November 24, 2005
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Kenji Katsuno, Masahiro Hiratochi, Akira Iyobe, Minoru Fujioka, Masayuki Isaji
  • Publication number: 20050137143
    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: Application
    Filed: November 3, 2004
    Publication date: June 23, 2005
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Kenji Katsuno, Masahiro Hiratochi, Akira Iyobe, Minoru Fujioka, Masayuki Isaji
  • Publication number: 20050119192
    Abstract: The present invention provides crystals of 2-(4-methoxybenzyl)phenyl 6-O-ethoxycarbonyl-?-D-glucopyranoside, pharmaceutical compositions containing the same and their uses, which exhibit excellent SGLT2 inhibitory activities, and are useful for treating or preventing diseases associated with hyperglycemia.
    Type: Application
    Filed: March 4, 2003
    Publication date: June 2, 2005
    Inventors: Akira Iyobe, Hirotaka Teranishi, Kazuya Tatani, Shigeru Yonekubo, Masayuki Isaji
  • Publication number: 20050113315
    Abstract: The present invention relates to glucopyranosyloxybenzylbenzene 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: Application
    Filed: November 2, 2004
    Publication date: May 26, 2005
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Nobuhiko Fushimi, Kazuya Tatani, Norihiko Kikuchi, Kenji Katsuno, Masayuki Isaji
  • Publication number: 20050080022
    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: Application
    Filed: October 7, 2004
    Publication date: April 14, 2005
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Kazuya Tatani, Kenji Katsuno, Masahiro Hiratochi, Yoshiki Tokutake, Masayuki Isaji
  • Publication number: 20050075294
    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: Application
    Filed: October 7, 2004
    Publication date: April 7, 2005
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Kazuya Tatani, Kenji Katsuno, Masahiro Hiratochi, Yoshiki Tokutake, Masayuki Isaji
  • Publication number: 20050065098
    Abstract: The present invention relates to glucopyranosyloxy-benzylbenzene derivatives represented by the general formula: wherein P represents a group forming a prodrug; and R represents 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 or a lower alkoxy-substituted (lower alkylthio) group, which have an improved oral absorption and can exert an excellent inhibitory activity in human SGLT2 in vivo and which are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications or obesity, and pharmaceutical compositions comprising the same.
    Type: Application
    Filed: August 12, 2004
    Publication date: March 24, 2005
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Kazuya Tatani, Masayuki Isaji
  • Publication number: 20050059614
    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: Application
    Filed: November 2, 2004
    Publication date: March 17, 2005
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Nobuhiko Fushimi, Kazuya Tatani, Norihiko Kikuchi, Kenji Katsuno, Masayuki Isaji
  • Publication number: 20050049203
    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: Application
    Filed: June 17, 2002
    Publication date: March 3, 2005
    Inventors: Toshihiro Nishimura, Hideki Fujikura, Nobuhiko Fushimi, Kazuya Tatani, Kenji Katsuno, Masayuki Isaji
  • Publication number: 20040176308
    Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: 1
    Type: Application
    Filed: May 6, 2004
    Publication date: September 9, 2004
    Inventors: Hiroaki Shiohara, Hideki Fujikura, Nobuhiko Fushimi, Fumiaki Ito, Masayuki Isaji
  • Publication number: 20040147729
    Abstract: The present invention relates to glucopyranosyloxypyrazole derivatives represented by the general formula: 1
    Type: Application
    Filed: January 20, 2004
    Publication date: July 29, 2004
    Applicant: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Kenji Katsuno, Masahiro Hiratochi, Akira Iyobe, Minoru Fujioka, Masayuki Isaji
  • Publication number: 20040132669
    Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: 1
    Type: Application
    Filed: February 19, 2004
    Publication date: July 8, 2004
    Inventors: Toshihiro Nishimura, Nobuhiko Fushimi, Hideki Fujikura, Kenji Katsuno, Yoshimitsu Komatsu, Masayuki Isaji
  • Publication number: 20040116357
    Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: 1
    Type: Application
    Filed: January 12, 2004
    Publication date: June 17, 2004
    Inventors: Nobuhiko Fushimi, Hideki Fujikura, Toshihiro Nishimura, Kenji Katsuno, Masayuki Isaji
  • Publication number: 20040063170
    Abstract: The present invention relates to glucopyranosyloxybenzylbenzene derivatives represented by the general formula: 1
    Type: Application
    Filed: October 6, 2003
    Publication date: April 1, 2004
    Inventors: Hideki Fujikura, Toshihiro Nishimura, Nobuhiko Fushimi, Kazuya Tatani, Norihiko Kikuchi, Kenji Katsuno, Masayuki Isaji
  • Publication number: 20040063646
    Abstract: The present invention provides glucopyranosyloxypyrazole derivatives represented by the general formula: 1
    Type: Application
    Filed: November 6, 2003
    Publication date: April 1, 2004
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Takeshi Nakabayashi, Masayuki Isaji
  • Publication number: 20040053855
    Abstract: The present invention relates to glucopyranosyloxybenzylbenzene derivatives represented by the general formula: 1
    Type: Application
    Filed: December 30, 2002
    Publication date: March 18, 2004
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Kazuya Tatani, Kenji Katsuno, Masahiro Hiratochi, Yoshiki Tokutake, Masayuki Isaji
  • Publication number: 20040018998
    Abstract: The present invention relates to glucopyranosyloxybenzylbenzene derivatives represented by the general formula: 1
    Type: Application
    Filed: July 29, 2003
    Publication date: January 29, 2004
    Inventors: Hideki Fujikura, Nobuhiko Fushimi, Toshihiro Nishimura, Kazuya Tatani, Masayuki Isaji
  • Patent number: 6407139
    Abstract: The present invention relates to a neovascularization inhibitor comprising as the active ingredient N-(3,4-dimethoxycinnamoyl) anthranilic acid represented by the formula: or a pharmaceutically acceptable salt thereof, which has inhibitory effects on proliferation and chemotaxis of human microvascular endothelial cells and tube formation of human microvascular endothelial cells, and therefore, is useful as an agent for the prevention and treatment of diseases associated with neovascularization such as diabetic retino senile discoid macular degeneration, neovascular glaucoma and rheumatic arthritis.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: June 18, 2002
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Masayuki Isaji, Hiroshi Miyata, Yukiyoshi Ajisawa
  • Patent number: 6376543
    Abstract: The present invention relates to a secondary cataract inhibitor comprising as the active ingredient N-(3,4-dimethoxy-cinnamoyl)anthranilic acid represented by the formula: or a pharmaceutically acceptable salt thereof, which has an inhibitory activity on posterior capsule opacification formation after cataract surgery and is useful for the prevention or treatment of secondary cataract.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: April 23, 2002
    Assignee: Kissei Pharmaceuticals Co., Ltd.
    Inventors: Masayuki Isaji, Hiroshi Miyata, Yukiyoshi Ajisawa
  • Patent number: 6114383
    Abstract: The present invention relates to an agent inhibiting progress of pterygium and postoperative recurrence of the same. N-(3,4-Dimethoxycinnamoyl)anthranilic acid represented by the formula: ##STR1## or a pharmaceutically acceptable salt thereof has an inhibitory activity on proliferation of pterygium tissues, and a pharmaceutical composition comprising as the active ingredient the same is useful as an agent inhibiting progress of pterygium and postoperative recurrence of the same.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: September 5, 2000
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Masayuki Isaji, Hiroshi Miyata, Yukiyoshi Ajisawa