Patents Assigned to Zaiden Hojin Biseibutsu Kagaku Kenkyu Kai
  • Synthesis of arphamenine A
    Patent number: 4870207
    Abstract: Known compound, optically active arphamenine A can now be synthesized in an optically active pure form and in a favorable yield by a new process comprising consecutive steps with starting from L-arginine, wherein racemization of intermediate reaction products can be minimized.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: September 26, 1989
    Assignee: Zaiden Hojin Biseibutsu Kagaku Kenkyu Kai
    Inventors: Hamao Umezawa, deceased, Takaaki Aoyagi, Kuniaki Tatsuta, Takeshi Nakamura, Shunzo Fukatsu