Patents Examined by Zima Northington
  • Pyridyl-cyclohexanone compounds
    Patent number: 4845228
    Abstract: The present invention relates to cyclohexanone derivatives represented by general formula: ##STR1## wherein R represents a hydrogen atom or an acetyl group. The cyclohexanone derivatives are important intermediates for producing isoquinoline derivatives which are useful as drugs, especially for heart drugs.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: July 4, 1989
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tsuneji Suzuki, Sannohe, Kunio, Toshihiko Ito, Masahiko Maruyama, Joji Kamiya, Makoto Hirayama, Takafumi Kitano, Akira Awaya