Patents by Inventor Kousei Shimada

Kousei Shimada 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: 9394235
    Abstract: An object of the present invention is to efficiently produce an optically active bicyclic compound. The optically active bicyclic compound is efficiently produced using an enzyme.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: July 19, 2016
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yoshitaka Nakamura, Yukito Furuya, Kousei Shimada, Yoshiyuki Onishi
  • Publication number: 20150038738
    Abstract: An object of the present invention is to efficiently produce an optically active bicyclic compound. The optically active bicyclic compound is efficiently produced using an enzyme.
    Type: Application
    Filed: October 10, 2014
    Publication date: February 5, 2015
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Yoshitaka Nakamura, Yukito Furuya, Kousei Shimada, Yoshiyuki Onishi
  • Publication number: 20130035337
    Abstract: The present invention relates to a novel fused bicyclic heteroaryl derivative or a pharmacologically acceptable salt thereof, which has an excellent hypoglycemic effect or treats and/or prevents the onset of a disorder of carbohydrate or lipid metabolism or a disease mediated by peroxisome proliferator-activated receptor (PPAR) ?. A compound having the general formula (I): wherein R1 represents a C1-C6 alkyl group, a C6-C10 aryl group which may be substituted with 1 to 5 group(s) independently selected from Substituent Group a, or the like; R2 represents a C1-C6 alkyl group; R3 represents a C6-C10 aryl group which may be substituted with 1 to 5 group(s) independently selected from Substituent Group a, or the like; Q represents a group represented by the formula ?CH— or a nitrogen atom; and Substituent Group a represents a halogen atom, a C1-C6 alkyl group, a C1-C6 hydroxyalkyl group, and the like, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: March 13, 2012
    Publication date: February 7, 2013
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Kousei Shimada, Yoshiyuki Onishi, Makoto Mori, Eri Tokumaru
  • Patent number: 7947738
    Abstract: It is intended to provide a bicyclic ?-amino acid derivative having excellent activity as an ?2? ligand. The present invention provides a compound represented by the general formula (I): wherein R1, R2, R2?, R4, R5, R6, R7, R8, and R8? are a hydrogen atom or the like; and R3 is a hydrogen atom, a halogen atom, a C1-C6 alkyl group, or the like.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: May 24, 2011
    Assignee: Daiichi Sankyo Company, Ltd.
    Inventors: Kousei Shimada, Asuka Kawamura, Naohisa Arakawa, Yuki Domon
  • Publication number: 20100249229
    Abstract: It is intended to provide a bicyclic ?-amino acid derivative having excellent activity as an ?2? ligand. The present invention provides a compound represented by the general formula (I): wherein R1, R2, R2?, R4, R5, R6, R7, R8, and R8? are a hydrogen atom or the like; and R3 is a hydrogen atom, a halogen atom, a C1-C6 alkyl group, or the like.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 30, 2010
    Inventors: KOUSEI SHIMADA, ASUKA KAWAMURA, NAOHISA ARAKAWA, YUKI DOMON
  • Publication number: 20100048564
    Abstract: The present invention relates to a novel fused bicyclic heteroaryl derivative or a pharmacologically acceptable salt thereof, which has an excellent hypoglycemic effect or treats and/or prevents the onset of a disorder of carbohydrate or lipid metabolism or a disease mediated by peroxisome proliferator-activated receptor (PPAR) ?. A compound having the general formula (I): wherein R1 represents a C1-C6 alkyl group, a C6-C10 aryl group which may be substituted with 1 to 5 group(s) independently selected from Substituent Group a, or the like; R2 represents a C1-C6 alkyl group; R3 represents a C6-C10 aryl group which may be substituted with 1 to 5 group(s) independently selected from Substituent Group a, or the like; Q represents a group represented by the formula ?CH— or a nitrogen atom; and Substituent Group a represents a halogen atom, a C1-C6 alkyl group, a C1-C6 hydroxyalkyl group, and the like, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: October 5, 2009
    Publication date: February 25, 2010
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Kousei SHIMADA, Yoshiyuki ONISHI, Makoto MORI, Eri TOKUMARU
  • Publication number: 20070219234
    Abstract: [Problem to be Solved]The present invention provides a compound promoting osteogenesis. [Solution] The present invention provides a compound having the following general formula (I) wherein R1 is H or alkyl, R2 is RaS—, RaO—, RaNH—, Ra(Rb)N— or cyclic amino, and Ra and Rb are alkyl which may be substituted, cycloalkyl which may be substituted, or the like, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: April 11, 2005
    Publication date: September 20, 2007
    Inventors: Kiyoshi Oizumi, Satoru Naito, Akira Nakao, Tsuyoshi Shinozuka, Satoshi Matsui, Kousei Shimada
  • Patent number: 6040339
    Abstract: Compounds of formula (I): ##STR1## wherein: R.sup.1 is alkyl; R.sup.2a, R.sup.2b, R.sup.2c and R.sup.2d are the same or different and each is hydrogen, optionally substituted alkyl or various other organic groups; R.sup.3 is alkyl; R.sup.4 is a group of formula (II), (III), (IV), (V), (VI), (VII), (VIII) or (IX): ##STR2## wherein: A.sup.1 is a single bond, alkylene or alkenylene; A.sup.2 is or alkenylene; A.sup.3 is a single bond, alkyleneor alkenylene; R.sup.5a and R.sup.5b are the same or different and each is hydrogen, alkyl or various other groups; R.sup.6 is alkyl or phenyl; R.sup.7 is hydrogen or alkyl; R.sup.8 is alkyl or various other groups; and n is 0 and pharmaceutically acceptable salts thereof have valuable inhibitory activity against acyl-CoA: cholesterol acyl transferase.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: March 21, 2000
    Assignee: Sankyo Company, Limited
    Inventors: Akira Yoshida, Kozo Oda, Takashi Kasai, Kousei Shimada, Hiroshi Kogen, Ichiro Hayakawa, Sadao Ishihara, Teiichiro Koga, Eiichi Kitazawa, Taro Tokui
  • Patent number: 5880147
    Abstract: Compounds of formula (I): ##STR1## wherein: R.sup.1 is alkyl; R.sup.2a, R.sup.2b, R.sup.2c and R.sup.2d are the same or different and each is hydrogen, optionally substituted alkyl, --(C.dbd.O)--B.sup.1 (wherein B.sup.1 is hydrogen or alkyl), nitro, --NR.sup.c R.sup.d (wherein R.sup.c is hydrogen or alkyl and Rd is alkyl), hydroxy, protected hydroxy group, alkoxy, cyano, alkylthio, alkylsulfinyl, alkylsulfonyl or halogen;R.sup.3 is alkyl; R.sup.4 is a group of the formula (II) ##STR2## wherein A.sup.1 is a single bond, alkylene or alkenylene; R.sup.5a and R.sup.5b are the same or different and each is hydrogen, alkyl or --A.sup.4 R.sup.5.sub.c wherein A is a single bond, alkylene or alkenylene and R.sup.5.sub.c is alkoxy; and n is 0, and pharmaceutically acceptable salts thereof. Such compounds have valuable inhibitory activity against acyl-CoA (cholesterol acyl transferase).
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: March 9, 1999
    Assignee: Sankyo Company, Limited
    Inventors: Akira Yoshida, Kozo Oda, Takashi Kasai, Kousei Shimada, Hiroshi Kogen, Ichiro Hayakawa, Sadao Ishihara, Teiichiro Koga, Eiichi Kitazawa, Taro Tokui