Patents by Inventor Setsuya SHIBAHARA

Setsuya SHIBAHARA 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).

  • Process for preparing substituted polycyclic pyridone derivative and crystal thereof
    Patent number: 11807648
    Abstract: The present invention provides a process for preparing a compound of the formula (II): wherein R2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: November 7, 2023
    Assignee: SHIONOGI & CO., LTD.
    Inventor: Setsuya Shibahara
  • PROCESS FOR PREPARING SUBSTITUTED POLYCYCLIC PYRIDONE DERIVATIVE AND CRYSTAL THEREOF
    Publication number: 20220251107
    Abstract: The present invention provides a process for preparing a compound of the formula (II): wherein R2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.
    Type: Application
    Filed: January 19, 2022
    Publication date: August 11, 2022
    Applicant: Shionogi & Co., Ltd.
    Inventors: Setsuya SHIBAHARA, Nobuaki FUKUI, Toshikatsu MAKI, Kosuke ANAN
  • Process for preparing substituted polycyclic pyridone derivative and crystal thereof
    Patent number: 11261198
    Abstract: The present invention provides a process for preparing a compound of the formula (II): wherein R2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: March 1, 2022
    Assignee: SHIONOGI & CO., LTD.
    Inventors: Setsuya Shibahara, Kosuke Anan
  • PROCESS FOR PREPARING SUBSTITUTED POLYCYCLIC PYRIDONE DERIVATIVE AND CRYSTAL THEREOF
    Publication number: 20210230187
    Abstract: The present invention provides a process for preparing a compound of the formula (II): wherein R2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.
    Type: Application
    Filed: June 19, 2017
    Publication date: July 29, 2021
    Applicant: Shionogi & Co., Ltd.
    Inventors: Setsuya SHIBAHARA, Nobuaki FUKUI, Toshikatsu MAKI, Kosuke ANAN