Patents by Inventor Takao TESHIMA

Takao TESHIMA 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).

  • Method for producing optically active pyrrolidine compounds
    Patent number: 11746099
    Abstract: The present invention provides a process for preparing a compound represented by formula (VII), which comprises reacting a compound represented by formula (VI) with a malonic acid derivative in the presence of a base and an asymmetric catalyst in a two layer solvent system of hydrophobic solvent and water, (wherein R2 and R3 each independently represents a protecting group for carboxyl group).
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: September 5, 2023
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Takao Teshima, Takafumi Yamagami, Tetsuo Yamaguchi, Junki Ando
  • METHOD FOR PRODUCING OPTICALLY ACTIVE PYRROLIDINE COMPOUNDS
    Publication number: 20220119364
    Abstract: The present invention provides a process for preparing a compound represented by formula (VII), which comprises reacting a compound represented by formula (VI) with a malonic acid derivative in the presence of a base and an asymmetric catalyst in a two layer solvent system of hydrophobic solvent and water.
    Type: Application
    Filed: June 10, 2021
    Publication date: April 21, 2022
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Takao TESHIMA, Takafumi YAMAGAMI, Tetsuo YAMAGUCHI, Junki ANDO
  • METHOD FOR PRODUCING OPTICALLY ACTIVE PYRROLIDINE COMPOUNDS
    Publication number: 20210300896
    Abstract: The present invention provides a process for preparing a compound represented by formula (VII), which comprises reacting a compound represented by formula (VI) with a malonic acid derivative in the presence of a base and an asymmetric catalyst in a two layer solvent system of hydrophobic solvent and water.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 30, 2021
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Takao TESHIMA, Takafumi YAMAGAMI, Tetsuo YAMAGUCHI, Junki ANDO
  • Method for producing optically active pyrrolidine compounds
    Patent number: 11104662
    Abstract: The present invention provides a process for preparing a compound represented by formula (VII), which comprises reacting a compound represented by formula (VI) with a malonic acid derivative in the presence of a base and an asymmetric catalyst in a two layer solvent system of hydrophobic solvent and water. (wherein R2 and R3 each independently represents a protecting group for carboxyl group).
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: August 31, 2021
    Assignee: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Takao Teshima, Takafumi Yamagami, Tetsuo Yamaguchi, Junki Ando
  • METHOD FOR PRODUCING OPTICALLY ACTIVE PYRROLIDINE COMPOUNDS
    Publication number: 20200024254
    Abstract: The present invention provides a process for preparing a compound represented by formula (VII), which comprises reacting a compound represented by formula (VI) with a malonic acid derivative in the presence of a base and an asymmetric catalyst in a two layer solvent system of hydrophobic solvent and water.
    Type: Application
    Filed: January 30, 2018
    Publication date: January 23, 2020
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Takao TESHIMA, Takafumi YAMAGAMI, Tetsuo YAMAGUCHI, Junki ANDO