Patents by Inventor Koki Matsubara

Koki Matsubara 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: 20230149382
    Abstract: The present invention relates to tetrahydroquinoline derivatives of the present invention or a pharmaceutically acceptable salt thereof or a prodrug thereof, processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of various disorders which are mediated via the P2X7 receptor.
    Type: Application
    Filed: July 22, 2022
    Publication date: May 18, 2023
    Inventors: Hirohide NOGUCHI, Yoshimasa ARANO, Kazuo ANDO, Kazuki TOYOSHIMA, Toshihiko SONE, Koki MATSUBARA
  • Patent number: 11439633
    Abstract: The present invention relates to tetrahydroquinoline derivatives of the present invention or a pharmaceutically acceptable salt thereof or a prodrug thereof, processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of various disorders which are mediated via the P2X7 receptor.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: September 13, 2022
    Assignees: RaQualia Pharma Inc., Asahi Kasei Pharma Corporation
    Inventors: Yoshimasa Arano, Kazuki Toyoshima, Toshihiko Sone, Koki Matsubara
  • Publication number: 20210085667
    Abstract: The present invention relates to tetrahydroquinoline derivatives of the present invention or a pharmaceutically acceptable salt thereof or a prodrug thereof, processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of various disorders which are mediated via the P2X7 receptor.
    Type: Application
    Filed: December 4, 2020
    Publication date: March 25, 2021
    Applicants: RaQualia Pharma Inc., Asahi Kasei Pharma Corporation
    Inventors: Hirohide NOGUCHI, Yoshimasa ARANO, Kazuo ANDO, Kazuki TOYOSHIMA, Toshihiko SONE, Koki MATSUBARA
  • Publication number: 20200405706
    Abstract: The present invention relates to tetrahydroquinoline derivatives of the present invention or a pharmaceutically acceptable salt thereof or a prodrug thereof, processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of various disorders which are mediated via the P2X7 receptor.
    Type: Application
    Filed: March 13, 2018
    Publication date: December 31, 2020
    Applicants: RaQualia Pharma Inc., Asahi Kasei Pharma Corporation
    Inventors: Hirohide NOGUCHI, Yoshimasa ARANO, Kazuo ANDO, Kazuki TOYOSHIMA, Toshihiko SONE, Koki MATSUBARA
  • Patent number: 8664243
    Abstract: (S)-1-(4-Chloro-5-isoquinolinesulfonyl)-3-(methylamino)pyrrolidine monohydrochloride and a crystal thereof, and a crystal of the aforementioned monohydrochloride having a major peak or peaks at one or more positions selected from the group consisting of positions where 2?s are about 13.9°, 21.5°, 21.7°, 22.4°, 22.8°, 24.5° and 35.0° in a powder X-ray diffraction spectrum, which have excellent properties as active ingredient of a medicament for prophylactic and/or therapeutic treatment of glaucoma and the like.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: March 4, 2014
    Assignee: Asahi Kasei Pharma Corporation
    Inventors: Hitoshi Kida, Koki Matsubara, Shunsuke Kaneko
  • Publication number: 20120270898
    Abstract: (S)-1-(4-Chloro-5-isoquinolinesulfonyl)-3-(methylamino)pyrrolidine monohydrochloride and a crystal thereof, and a crystal of the aforementioned monohydrochloride having a major peak or peaks at one or more positions selected from the group consisting of positions where 2?s are about 13.9°, 21.5°, 21.7°, 22.4°, 22.8°, 24.5° and 35.0° in a powder X-ray diffraction spectrum, which have excellent properties as active ingredient of a medicament for prophylactic and/or therapeutic treatment of glaucoma and the like.
    Type: Application
    Filed: June 27, 2012
    Publication date: October 25, 2012
    Inventors: Hitoshi KIDA, Koki Matsubara, Shunsuke Kaneko
  • Patent number: 8232292
    Abstract: (S)-1-(4-Chloro-5-isoquinolinesulfonyl)-3-(methylamino)pyrrolidine monohydrochloride and a crystal thereof, and a crystal of the aforementioned monohydrochloride having a major peak or peaks at one or more positions selected from the group consisting of positions where 2?s are about 13.9°, 21.5°, 21.7°, 22.4°, 22.8°, 24.5° and 35.0° in a powder X-ray diffraction spectrum, which have excellent properties as active ingredient of a medicament for prophylactic and/or therapeutic treatment of glaucoma and the like.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: July 31, 2012
    Assignee: Asahi Kasei Pharma Corporation
    Inventors: Hitoshi Kida, Koki Matsubara, Shunsuke Kaneko, Yoshihito Kanzawa
  • Patent number: 7964613
    Abstract: A compound represented by the formula (1) [A represents a nitrogen-containing saturated ring; m represents an integer of 0 to 2; n represents an integer of 1 to 4; G1 represents hydrogen atom, chlorine atom, hydroxyl group, an alkoxy group, or amino group; G2 represents a halogen atom, hydroxyl group, cyano group, carboxy group, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an amino group, an alkylsulfinyl group, an alkylsulfonyl group, or an aryl group; G3 represents hydrogen atom, a halogen atom, hydroxyl group, cyano group, carboxy group, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an amino group, an alkoxycarbonyl group, an acyl group, an acyloxy group, an alkylsulfinyl group, an alkylsulfonyl group, or an aryl group; Y represents a single bond, or —C(R3)(R4)— (R3 and R4 represent hydrogen atom, or an alkyl group, or alkylene groups which combine together to form a saturated hydrocarbon ring group); G4 represents hydro
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: June 21, 2011
    Assignee: Asahi Kasei Pharma Corporation
    Inventors: Koki Matsubara, Atsushi Iesato, Akifumi Oomura, Koh Kawasaki, Rintaro Yamada, Minoru Seto
  • Publication number: 20090156823
    Abstract: (S)-1-(4-Chloro-5-isoquinolinesulfonyl)-3-(methylamino)pyrrolidine monohydrochloride and a crystal thereof, and a crystal of the aforementioned monohydrochloride having a major peak or peaks at one or more positions selected from the group consisting of positions where 2?s are about 13.9°, 21.5°, 21.7°, 22.4°, 22.8°, 24.5° and 35.0° in a powder X-ray diffraction spectrum, which have excellent properties as active ingredient of a medicament for prophylactic and/or therapeutic treatment of glaucoma and the like.
    Type: Application
    Filed: July 1, 2008
    Publication date: June 18, 2009
    Applicant: Asahi Kasei Pharma Corporation
    Inventors: Hitoshi Kida, Koki Matsubara, Shunsuke Kaneko, Yoshihito Kanzawa
  • Publication number: 20090048223
    Abstract: A compound represented by the formula (1) [A represents a nitrogen-containing saturated ring; m represents an integer of 0 to 2; n represents an integer of 1 to 4; G1 represents hydrogen atom, chlorine atom, hydroxyl group, an alkoxy group, or amino group; G2 represents a halogen atom, hydroxyl group, cyano group, carboxy group, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an amino group, an alkylsulfinyl group, an alkylsulfonyl group, or an aryl group; G3 represents hydrogen atom, a halogen atom, hydroxyl group, cyano group, carboxy group, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an amino group, an alkoxycarbonyl group, an acyl group, an acyloxy group, an alkylsulfinyl group, an alkylsulfonyl group, or an aryl group; Y represents a single bond, or —C(R3)(R4)— (R3 and R4 represent hydrogen atom, or an alkyl group, or alkylene groups which combine together to form a saturated hydrocarbon ring group); G4 represents hydro
    Type: Application
    Filed: February 27, 2008
    Publication date: February 19, 2009
    Applicant: Asahi Kasei Pharma Corporation
    Inventors: Koki Matsubara, Atsushi Iesato, Akifumi Oomura, Koh Kawasaki, Rintaro Yamada, Minoru Seto
  • Patent number: 6696573
    Abstract: A process for the preparation of tricyclic amino alcohol derivatives including 2-[N-[2-(9H-carbazol-2-yloxy)ethyl]]amino-1-[(3-methylsulfonylamino)phenyl]ethanol useful in the treatment of diabetes, obesity, hyperlipidemia and so on; and intermediates as represented by formula (5) or (6) or the like useful in the preparation, wherein R11 is hydrogen or the like; and *1 represents an asymmetric carbon atom. 2-Halo-1-(3-nitrophenyl)ethanone derivatives and 1-(3-nitrophenyl)oxirane derivatives, which are intermediates for the preparation of tricyclic amino alcohol derivatives, are easy of purification, and particularly optically active 1-(3-nitrophenyl)oxirane derivatives are effective in enhancing the optical purities of the final products.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: February 24, 2004
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Koki Matsubara, Naoyuki Ishii, Masami Ogawa
  • Publication number: 20030225289
    Abstract: A process for the preparation of tricyclic amino alcohol derivatives including 2-[N-[2-(9H-carbazol-2-yloxy)ethyl]]amino-1-[(3-methylsulfonylamino)phenyl]ethanol useful in the treatment of diabetes, obesity, hyperlipidemia and so on; and intermediates as represented by formula (5) or (6) or the like useful in the preparation, wherein R11 is hydrogen or the like; and *1 represents an asymmetric carbon atom. 2-Halo-1-(3-nitrophenyl)ethanone derivatives and 1-(3-nitrophenyl)oxirane derivatives, which are intermediates for the preparation of tricyclic amino alcohol derivatives, are easy of purification, and particularly optically active 1-(3-nitrophenyl)oxirane derivatives are effective in enhancing the optical purities of the final products.
    Type: Application
    Filed: June 11, 2003
    Publication date: December 4, 2003
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koki Matsubara, Naoyuki Ishii, Masami Ogawa
  • Patent number: 6495701
    Abstract: The present invention is directed to processes for the preparation of a compound useful for treating diabetes, obesity, hyperlipidemia and the like, which compound is represented by the formula (1): wherein R1 represents a lower alkyl group or a benzyl group; *1 represents an asymmetric carbon atom; R2 hydrogen atom, a halogen atom or a hydroxyl group; and A represents one of the following groups: wherein X represents NH, O or S; R6 represents a hydrogen atom, a hydroxyl group, an amino group or an acetylamino group; and *2 represents an asymmetric carbon atom when R6 is not a hydrogen atom, and to intermediates useful for the said processes. The processes of the present invention are convenient, practical preparing processes with low cost which comprise a small number of steps with good industrial work efficiency.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: December 17, 2002
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Koki Matsubara, Hitoshi Kida