Patents by Inventor Kengo OSHITA

Kengo OSHITA 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).

  • 1,3,4,8-Tetrahydro-2H-Pyrido[1,2-a]Pyrazine Derivative and Use of the Same as HIV Integrase Inhibitor
    Publication number: 20180319798
    Abstract: [Problem] Provided is a novel 1,3,4,8-tetrahydro-2H-pyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, or a solvate thereof, which is useful as an anti-HIV agent. [Solving Means] The present invention provides a compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, or a solvate thereof.
    Type: Application
    Filed: July 25, 2018
    Publication date: November 8, 2018
    Applicant: Japan Tobacco Inc.
    Inventors: Susumu Miyazaki, Yuki Bessho, Kaoru Adachi, Seiji Kawashita, Hirotaka Isoshima, Kengo Oshita, Shunichi Fukuda
  • Substituted spiropyrido[1,2-a]pyrazine derivative and medicinal use thereof as HIV integrase inhibitor
    Patent number: 10087178
    Abstract: Provided is a substituted spiropyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, which is useful as an anti-HIV agent. The present invention relates to a compound represented by the following formula [I] or [II] or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the specification.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: October 2, 2018
    Assignee: JAPAN TOBACCO INC.
    Inventors: Susumu Miyazaki, Hirotaka Isoshima, Kengo Oshita, Seiji Kawashita, Noboru Nagahashi, Masakazu Terashita
  • Substituted thiazoles as HIV integrase inhibitors
    Patent number: 10065950
    Abstract: [Problem] Provided is a novel 1,3,4,8-tetrahydro-2H-pyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, or a solvate thereof, which is useful as an anti-HIV agent. [Solving Means] The present invention provides a compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, or a solvate thereof.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: September 4, 2018
    Assignee: Japan Tobacco Inc.
    Inventors: Susumu Miyazaki, Yuki Bessho, Kaoru Adachi, Seiji Kawashita, Hirotaka Isoshima, Kengo Oshita, Shunichi Fukuda
  • SUBSTITUTED SPIROPYRIDO[1,2-a]PYRAZINE DERIVATIVE AND MEDICINAL USE THEREOF AS HIV INTEGRASE INHIBITOR
    Publication number: 20170044156
    Abstract: Provided is a substituted spiropyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, which is useful as an anti-HIV agent. The present invention relates to a compound represented by the following formula [I] or [II] or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the specification.
    Type: Application
    Filed: December 27, 2013
    Publication date: February 16, 2017
    Applicant: JAPAN TOBACCO INC.
    Inventors: Susumu MIYAZAKI, Hirotaka ISOSHIMA, Kengo OSHITA, Seiji KAWASHITA, Noboru NAGAHASHI, Masakazu TERASHITA
  • SUBSTITUTED SPIROPYRIDO[1,2-a]PYRAZINE DERIVATIVE AND PHARMACEUTICAL USE OF SAME AS HIV INTEGRASE INHIBITOR
    Publication number: 20160046641
    Abstract: [Problem] Provided is a substituted spiropyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, which is useful as an anti-HIV agent. [Solving Means] The present invention relates to a compound represented by the following formula [I] or [II] or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the specification.
    Type: Application
    Filed: March 20, 2015
    Publication date: February 18, 2016
    Inventors: Susumu MIYAZAKI, Hirotaka ISOSHIMA, Kengo OSHITA, Seiji KAWASHITA, Noboru NAGAHASHI, Masakazu TERASHITA
  • SUBSTITUTED SPIROPYRIDO[1,2-a]PYRAZINE DERIVATIVE AND PHARMACEUTICAL USE OF SAME AS HIV INTEGRASE INHIBITOR
    Publication number: 20140221378
    Abstract: Provided is a substituted spiropyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, which is useful as an anti-HIV agent. The present invention relates to a compound represented by the following formula [I] or [II] or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the specification.
    Type: Application
    Filed: December 27, 2013
    Publication date: August 7, 2014
    Applicant: JAPAN TOBACCO INC.
    Inventors: Susumu MIYAZAKI, Hirotaka ISOSHIMA, Kengo OSHITA, Seiji KAWASHITA, Noboru NAGAHASHI, Masakazu TERASHITA
  • SUBSTITUTED SPIROPYRIDO[1,2-a]PYRAZINE DERIVATIVE AND PHARMACEUTICAL USE OF SAME AS HIV INTEGRASE INHIBITOR
    Publication number: 20140221380
    Abstract: [Summary] [Problem] Provided is a substituted spiropyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, which is useful as an anti-HIV agent. [Solving Means] The present invention relates to a compound represented by the following formula [I] or [II] or a pharmaceutically acceptable salt thereof: wherein each symbol is as defined in the specification.
    Type: Application
    Filed: December 27, 2013
    Publication date: August 7, 2014
    Applicant: JAPAN TOBACCO INC.
    Inventors: Susumu MIYAZAKI, Hirotaka ISOSHIMA, Kengo OSHITA, Seiji KAWASHITA, Noboru NAGAHASHI, Masakazu TERASHITA
  • 1,3,4,8-Tetrahydro-2H-Pyrido[1,2-a]Pyradine Derivatives and Use Thereof as HIV Integrase Inhibitor
    Publication number: 20120108564
    Abstract: [Problem] Provided is a novel 1,3,4,8-tetrahydro-2H-pyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, or a solvate thereof, which is useful as an anti-HIV agent. [Solving Means] The present invention provides a compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, or a solvate thereof.
    Type: Application
    Filed: February 25, 2011
    Publication date: May 3, 2012
    Inventors: Susumu MIYAZAKI, Yuki BESSHO, Kaoru ADACHI, Seiji KAWASHITA, Hirotaka ISOSHIMA, Kengo OSHITA, Shunichi FUKUDA