Patents by Inventor Tsubasa Takeichi

Tsubasa Takeichi 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 7H-PYRROLO[2,3-d]PYRIMIDINE DERIVATIVES AND SYNTHETIC INTERMEDIATES THEREOF
    Publication number: 20240140967
    Abstract: The present invention provides processes for preparing 7H-pyrrolo[2,3-d]pyrimidine derivatives, which are useful as a Janus kinase (JAK) inhibitor, intermediates thereof, and processes for preparing the intermediates. The present invention provides processes for preparing 3-[(3S,4R)-3-methyl-6-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1,6-diazaspiro[3.4]octan-1-yl]-3-oxopropanenitrile using salts of (3S,4R)-1-benzyl-3-methyl-1,6-diazaspiro[3.4]octane with organic acids.
    Type: Application
    Filed: April 19, 2023
    Publication date: May 2, 2024
    Inventors: Hiromu Takiguchi, Akinobu Higashi, Takashi Inaba, Takashi Watanabe, Tsubasa Takeichi, Anders Klarskov Petersen, Per Vedsoe, Kim Lebek Jensen, Jan Bornholdt, Soren Ebdrup
  • Process for preparing 7H-pyrrolo[2,3-d]pyrimidine derivatives and synthetic intermediates thereof
    Patent number: 11673900
    Abstract: The present invention provides processes for preparing 7H-pyrrolo[2,3-d]pyrimidine derivatives, which are useful as a Janus kinase (JAK) inhibitor, intermediates thereof, and processes for preparing the intermediates. The present invention provides processes for preparing 3-[(3S,4R)-3-methyl-6-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1,6-diazaspiro[3.4]octan-1-yl]-3-oxopropanenitrile using salts of (3S,4R)-1-benzyl-3-methyl-1,6-diazaspiro[3.4]octane with organic acids.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: June 13, 2023
    Assignees: Japan Tobacco Inc., LEO Pharma A/S
    Inventors: Hiromu Takiguchi, Akinobu Higashi, Takashi Inaba, Takashi Watanabe, Tsubasa Takeichi, Anders Klarskov Petersen, Per Vedsoe, Kim Lebek Jensen, Jan Bornholdt, Soren Ebdrup
  • Production method for pyrazole-amide compound
    Patent number: 10981877
    Abstract: A production method of a compound represented by the formula [I]: or a pharmaceutically acceptable salt thereof, or a hydrate thereof.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: April 20, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takahisa Motomura, Masafumi Inoue, Hirotsugu Ito, Takuya Matsuo, Koichi Suzawa, Hiroshi Yamamoto, Tsubasa Takeichi, Yasuyuki Kajimoto, Takashi Inaba, Takao Ito, Takahiro Yamasaki, Yukishige Ikemoto
  • PROCESS FOR PREPARING 7H-PYRROLO[2,3-d]PYRIMIDINE DERIVATIVES AND SYNTHETIC INTERMEDIATES THEREOF
    Publication number: 20200216470
    Abstract: The present invention provides processes for preparing 7H-pyrrolo[2,3-d]pyrimidine derivatives, which are useful as a Janus kinase (JAK) inhibitor, intermediates thereof, and processes for preparing the intermediates. The present invention provides processes for preparing 3-[(3S, 4R)-3-methyl-6-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1,6-diazaspiro[3.4]octan-1-yl]-3-oxopropanenitrile using salts of (3S,4R)-1-benzyl-3-methyl-1,6-diazaspiro[3.4]octane with organic acids.
    Type: Application
    Filed: December 20, 2017
    Publication date: July 9, 2020
    Inventors: Hiromu Takiguchi, Akinobu Higashi, Takashi Inaba, Takashi Watanabe, Tsubasa Takeichi, Anders Klarskov Petersen, Per Vedsoe, Kim Lebek Jensen, Jan Bornholdt, Soren Ebdrup
  • PRODUCTION METHOD FOR PYRAZOLE-AMIDE COMPOUND
    Publication number: 20190375717
    Abstract: A production method of a compound represented by the formula [I]: or a pharmaceutically acceptable salt thereof, or a hydrate thereof.
    Type: Application
    Filed: July 28, 2017
    Publication date: December 12, 2019
    Inventors: Takahisa Motomura, Masafumi Inoue, Hirotsugu Ito, Takuya Matsuo, Koichi Suzawa, Hiroshi Yamamoto, Tsubasa Takeichi, Yasuyuki Kajimoto, Takashi Inaba, Takao Ito, Takahiro Yamasaki, Yukishige Ikemoto