Patents Assigned to Asahi Denka Kogko Kabushiki Kaisha
  • Optically active compound
    Patent number: 5401436
    Abstract: An optically active compound of the formula (I): ##STR1## R is a halogen atom, a cyano group, an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 18 carbon atoms, --R' or --O--R' group; R' is a ##STR2## group, wherein Y is a halogen atom, a hydroxyl group, an alkoxy group having 1 to 18 carbon atoms or an acyloxy group having 1 to 18 carbon atoms; X is a direct bond or a ##STR3## group; m, n and p each are each 0 or 1, provided that at least one of m, n and p is 1; and , represents an asymetric carbon atom.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: March 28, 1995
    Assignee: Asahi Denka Kogko Kabushiki Kaisha
    Inventors: Seiichi Takano, Kunio Ogasawara, Toshihiro Shibata, Masaki Kimura, Norio Kurosawa