Patents by Inventor Ayumi Takemura

Ayumi Takemura 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).

  • Methods and compounds useful in the synthesis of orexin-2 receptor antagonists
    Patent number: 9416109
    Abstract: The present disclosure provides compounds and methods that are useful for the preparation of compounds useful as orexin-2 receptor antagonists.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: August 16, 2016
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: George Anthony Moniz, Annie Zhu Wilcoxen, Farid Benayoud, Jaemoon Lee, Huiming Zhang, Taro Terauchi, Ayumi Takemura, Yu Yoshida, Toshiaki Tanaka, Keiichi Sorimachi, Yoshimitsu Naoe, Yuji Kazuta
  • Methods and Compounds Useful in the Synthesis of Orexin-2 Receptor Antagonists
    Publication number: 20150025237
    Abstract: The present disclosure provides compounds and methods that are useful for the preparation of compounds useful as orexin-2 receptor antagonists.
    Type: Application
    Filed: February 14, 2013
    Publication date: January 22, 2015
    Inventors: George Anthony Moniz, Annie Zhu Wilcoxen, Farid Benayoud, Jaemoon Lee, Huiming Zhang, Taro Terauchi, Ayumi Takemura, Yu Yoshida, Toshiaki Tanaka, Keiichi Sorimachi, Yoshimitsu Naoe, Yuji Kazuta
  • Cyclopropane compound
    Patent number: 8268848
    Abstract: A cyclopropane compound represented by the following formula (A) or a pharmaceutically acceptable salt thereof has orexin receptor antagonism, and therefore has a potencial of usefulness for the treatment of sleep disorder for which orexin receptor antagonism is effective, for example, insomnia: wherein Q represents —CH— or a nitrogen atom, R1a and R1b each independently represent a C1-6 alkyl group and the like, R1c represents a hydrogen atom and the like, R2a, R2b, R2c and R2d each independently represent a hydrogen atom, a halogen atom, a C1-6 alkyl group and the like, R3a, R3b and R3c each independently represent a hydrogen atom, a halogen atom and the like, and R3d represents a hydrogen atom and the like.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: September 18, 2012
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Taro Terauchi, Ayumi Takemura, Takashi Doko, Yu Yoshida, Toshiaki Tanaka, Keiichi Sorimachi, Yoshimitsu Naoe, Carsten Beuckmann, Yuji Kazuta
  • CYCLOPROPANE DERIVATIVES
    Publication number: 20120165339
    Abstract: A cyclopropane derivative represented by the following formula (I) or a pharmaceutically acceptable salt thereof has orexin receptor inhibitory action, and thus, is extremely useful as an agent for preventing or treating sleep disorder or dyssomnia caused by orexin, including insomnia as a typical example: wherein A1, A2 and A3 each independently represent an aryl group, a heterocyclyl group or the like, R1, R2 and R3 each independently represent a hydrogen atom, a C1-6 alkyl group or the like, X represents an oxygen atom or the like, and L represents a bond or the like.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 28, 2012
    Applicant: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Taro Terauchi, Ayumi Takemura, Yuji Kazuta, Fumihiro Ozaki, Takashi Doko, Yu Yoshida, Toshiaki Tanaka, Keiichi Sorimachi, Yoshimitsu Naoe, Carsten Beuckmann
  • CYCLOPROPANE COMPOUND
    Publication number: 20120095031
    Abstract: A cyclopropane compound represented by the following formula (A) or a pharmaceutically acceptable salt thereof has orexin receptor antagonism, and therefore has a potencial of usefulness for the treatment of sleep disorder for which orexin receptor antagonism is effective, for example, insomnia: wherein Q represents —CH— or a nitrogen atom, R1a and R1b each independently represent a C1-6 alkyl group and the like, R1c represents a hydrogen atom and the like, R2a, R2b, R2c and R2d each independently represent a hydrogen atom, a halogen atom, a C1-6 alkyl group and the like, R3a, R3b and R3c each independently represent a hydrogen atom, a halogen atom and the like, and R3d represents a hydrogen atom and the like.
    Type: Application
    Filed: September 20, 2011
    Publication date: April 19, 2012
    Applicant: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Taro Terauchi, Ayumi Takemura, Takashi Doko, Yu Yoshida, Toshiaki Tanaka, Keiichi Sorimachi, Yoshimitsu Naoe, Carsten Beuckmann, Yuji Kazuta