Patents by Inventor Toshimasa Katagiri

Toshimasa Katagiri 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).

  • 1-arylpyrimidine derivatives and pharmaceutical use thereof
    Patent number: 5661153
    Abstract: The present invention relates to 1-arylpyrimidine derivatives represented by general formula (I): ##STR1## wherein R.sub.1 is H, alkyl or aralkyl;Ar is 1-naphthyl, or a substituted or unsubstituted phenyl group;R.sub.4 is a substituted phenyl, a substituted styryl, 1-methylcyclohexyl, 4-methylcyclohexyl, 4-oxo-4H-pyran-2-yl or 2-oxo-2H-pyran-5-yl group;R.sub.5 and R.sub.6 are each independently H or alkyl;R.sub.3 is H, and R.sub.7 and R.sub.8 are combined together to be oxo, or else R.sub.3 and R.sub.7 are combined together to be another direct bond, and R.sub.5 and R.sub.8 are combined together to be a direct bond,or pharmaceutically acceptable salts thereof; and methods for treating allergic diseases with such compounds.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 26, 1997
    Assignee: Japan Energy Corporation
    Inventors: Yoshiaki Isobe, Toshimasa Katagiri, Junko Umezawa, Yuso Goto, Masashi Sasaki, Nobuo Watanabe, Hideharu Sato, Fumihiro Obara