Patents by Inventor Tomohiro Tsujita

Tomohiro Tsujita 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).

  • Aryl-substituted nitrogen-containing heterocyclic compounds
    Patent number: 7829586
    Abstract: Disclosed is an aryl-substituted nitrogen-containing heterocyclic compound represented by the formula (I) below or a pharmaceutically acceptable salt thereof. This compound serves as nociceptin receptor antagonist and is useful as a pharmaceutical agent for treating diseases associated with a nociceptin receptor. (I) [in the formula, A1, A2 and A3 independently represent a carbon atom or a nitrogen atom, and one or two of A1, A2 and A3 represent a carbon atom; R1 represents a lower alkyl group or the like; R2 represents a phenyl group which may be substituted with a halogen atom or the like; R3 represents a hydrogen atom, a lower alkyl group or the like; and R4 represents a lower alkyl group or the like.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: November 9, 2010
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Hirokatsu Ito, Kensuke Kobayashi, Hisashi Ohta, Osamu Okamoto, Satoshi Ozaki, Tomohiro Tsujita
  • Aryl-Substituted Nitrogen-Containing Heterocyclic Compounds
    Publication number: 20090275617
    Abstract: Disclosed is an aryl-substituted nitrogen-containing heterocyclic compound represented by the formula (I) below or a pharmaceutically acceptable salt thereof. This compound serves as nociceptin receptor antagonist and is useful as a pharmaceutical agent for treating diseases associated with a nociceptin receptor. (I) [in the formula, A1, A2 and A3 independently represent a carbon atom or a nitrogen atom, and one or two of A1, A2 and A3 represent a carbon atom; R1 represents a lower alkyl group or the like; R2 represents a phenyl group which may be substituted with a halogen atom or the like; R3 represents a hydrogen atom, a lower alkyl group or the like; and R4 represents a lower alkyl group or the like.
    Type: Application
    Filed: September 28, 2006
    Publication date: November 5, 2009
    Inventors: Hirokatsu Ito, Kensuke Kobayashi, Hisashi Ohta, Osamu Okamoto, Satoshi Ozaki, Tomohiro Tsujita