Patents Assigned to Tokyo Kasei Kogyo Co., Ltd.
  • Process for the preparation of (2R)-2-propyloctanoic acid
    Patent number: 6608221
    Abstract: A process for the preparation of (2R)-2-propyloctanoic acid which is characterized by subjecting (2S)-2-(2-propynyl)octanoic acid or (2S)-2-(2-propenyl)octanoic acid to reduction using platinum on carbon. This process gives (2R)-2-propyloctanoic acid having high optical purity without isomerization.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: August 19, 2003
    Assignees: Ono Pharmaceutical Co., Ltd., Tokyo Kasei Kogyo Co., Ltd.
    Inventors: Norikazu Toda, Kaoru Yamaguchi, Youichi Iguchi
  • 3-aminopyrrolidine compound and process for preparation thereof
    Patent number: 4785119
    Abstract: Disclosed is a novel compound of 3-aminopyrrolidine having the formula (I): ##STR1## in which R.sup.1 is hydrogen, an alkyl, an aralkyl or an aryl.
    Type: Grant
    Filed: October 7, 1986
    Date of Patent: November 15, 1988
    Assignee: Tokyo Kasei Kogyo Co., Ltd.
    Inventors: Kou Hojo, Anji Sakamoto, Masumi Tsutsumi, Tamotsu Yamada, Kazuhiko Nakazono, Kazuya Ishimori