Patents by Inventor Yuji Narutomi

Yuji Narutomi 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).

  • Pyrroloquinoline quinone compounds useful as an enzyme inhibitor
    Patent number: 4898870
    Abstract: The present invention concerns an enzyme inhibitor containing the compound represented by the following formula (I) as an effective ingredient: ##STR1## where R represents hydrogen or substituted or not substituted alkyl group, alkenyl group, aryl group or aralkyl group, X represents OR' or NR"R"', in which R', R" and R'" represent respectively hydrogen or substituted or not substituted alkyl group, alkenyl group, aryl group or aralkyl group.The enzyme inhibitor according to the present invention can effectively inhibit aldose reductase, glyoxalase I and reverse transcriptase.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: February 6, 1990
    Assignee: Sogo Pharmaceutical Company Limited
    Inventors: Yuji Narutomi, Manabu Katsumata, Yasuko Osawa, Saburo Uchikuga