Patents by Inventor Koji Ikedou

Koji Ikedou 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).

  • Fused heterocyclic compounds as peptidase inhibitors
    Patent number: 7547710
    Abstract: A compound represented by the formula wherein ring A is an optionally substituted 5- to 10-membered aromatic ring; R1 and R2 are the same or different and each is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group; X and Y are the same or different and each is a bound, —O—, —S—, —SO—, —SO?2#191- or —NR3— (R3 is a hydrogen atom or an optionally substituted hydrocarbon group); and L is a divalent hydrocarbon group, or a salt thereof shows a superior peptidase-inhibitory activity and is useful as a prophylactic or therapeutic agent of diabetes and the like.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: June 16, 2009
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Satoru Oi, Hironobu Maezaki, Koji Ikedou
  • Fused heterocyclic compounds
    Publication number: 20060135530
    Abstract: A compound represented by the formula wherein ring A is an optionally substituted 5- to 10-membered aromatic ring; R1 and R2 are the same or different and each is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group; X and Y are the same or different and each is a bound, —O—, —S—, —SO—, —SO?2#191- or —NR3— (R3 is a hydrogen atom or an optionally substituted hydrocarbon group); and L is a divalent hydrocarbon group, or a salt thereof shows a superior peptidase-inhibitory activity and is useful as a prophylactic or therapeutic agent of diabetes and the like.
    Type: Application
    Filed: August 7, 2003
    Publication date: June 22, 2006
    Inventors: Satoru Oi, Hironobu Maezaki, Koji Ikedou
  • Fused heterocyclic compounds
    Patent number: 7034039
    Abstract: The present invention provides a compound of the formula: wherein ring A is an optionally substituted 5 to 10-membered aromatic ring; R1 and R2 are the same or different and each is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group; X is a bond and the like; and L is a divalent hydrocarbon group, and a salt thereof, except 3-(aminomethyl)-2,6,7-trimethyl-4-phenyl-1(2H)-isoquinolinone, 3-(aminomethyl)-2-methyl-4-phenyl-1(2H)-isoquinolinone, 3-(aminomethyl)-6-chloro-2-methyl-4-phenyl-1(2H)-isoquinolinone and 3-(aminomethyl)-2-isopropyl-4-phenyl-1(2H)-isoquinolinone. The compound shows a superior peptidase-inhibitory activity and is useful as an agent for the prophylaxis or treatment of diabetes and the like.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: April 25, 2006
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Satoru Oi, Koji Ikedou, Koji Takeuchi, Masaki Ogino, Yoshihiro Banno, Hiroyuki Tawada, Taihei Yamane
  • Fused heterocyclic compounds
    Publication number: 20040082607
    Abstract: The present invention provides a compound of the formula: wherein ring A is an optionally substituted 5 to 10-membered aromatic ring; R1 and R2 are the same or different and each is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group; X is a bond and the like; and L is a divalent hydrocarbon group, and a salt thereof, except 3-(aminomethyl)-2,6,7-trimethyl-4-phenyl-1(2H)-isoquinolinone, 3-(aminomethyl)-2-methyl-4-phenyl-1(2H)-isoquinolinone, 3-(aminomethyl)-6-chloro-2-methyl-4-phenyl-1(2H)-isoquinolinone and 3-(aminomethyl)-2-isopropyl-4-phenyl-1(2H)-isoquinolinone. The compound shows a superior peptidase-inhibitory activity and is useful as an agent for the prophylaxis or treatment of diabetes and the like.
    Type: Application
    Filed: August 1, 2003
    Publication date: April 29, 2004
    Inventors: Satoru Oi, Koji Ikedou, Koji Takeuchi, Masaki Ogino, Yoshihiro Banno, Hiroyuki Tawada, Taihei Yamane