Patents by Inventor Isao Wanajo

Isao Wanajo 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).

  • Pyrrolidine derivative
    Patent number: 10995084
    Abstract: The present invention aims to provide a novel compound which has CGRP receptor antagonist activity and which is useful for the treatment of various diseases mediated by CGRP receptors. That is, the present invention relates to the pyrrolidine derivatives represented by the following formula (I) or a pharmaceutically acceptable salt thereof. In the formulae, W is ring, X is a carbon atom or the like, Y1 to Y4 are carbon atoms or the like, and R1 to R7 is alkyl or the like. The compounds of the present invention or a pharmaceutically acceptable salt thereof have an excellent CGRP receptor antagonist activity, and thus are useful as agents for the treatment of various diseases mediated by CGRP receptors.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: May 4, 2021
    Assignee: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Atsushi Kondo, Naohide Morita, Takehiro Ishikawa, Masako Yoshida, Akihiro Moriyama, Isao Wanajo
  • PYRROLIDINE DERIVATIVE
    Publication number: 20200299273
    Abstract: The present invention aims to provide a novel compound which has CGRP receptor antagonist activity and which is useful for the treatment of various diseases mediated by CGRP receptors. That is, the present invention relates to the pyrrolidine derivatives represented by the following formula (I) or a pharmaceutically acceptable salt thereof. In the formulae, W is ring, X is a carbon atom or the like, Y1 to Y4 are carbon atoms or the like, and R1 to R7 is alkyl or the like. The compounds of the present invention or a pharmaceutically acceptable salt thereof have an excellent CGRP receptor antagonist activity, and thus are useful as agents for the treatment of various diseases mediated by CGRP receptors.
    Type: Application
    Filed: July 20, 2017
    Publication date: September 24, 2020
    Applicant: KISSEI PHARMACEUTICAL CO., LTD.
    Inventors: Atsushi Kondo, Naohide Morita, Takehiro Ishikawa, Masako Yoshida, Akihiro Moriyama, Isao Wanajo