Patents Examined by Pavanaraty R. Sripada
  • Hydrophobic vitamin B.sub.12 derivatives
    Patent number: 5510479
    Abstract: A novel hydrophobic vitamin B.sub.12 derivative represented by the formula: ##STR1## wherein R represents an alkyl group having 2 to 17 carbon atoms, and X represents a cyano group, a hydroxyl group, an alkyl group or a 5'-deoxyadenosyl group. Since the derivative is hydrophobic, it can be taken up by an organism by thermodynamic diffusion, a passive transport, without an active transport.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: April 23, 1996
    Assignee: Nippon Oil Company
    Inventors: Tetsuo Toraya, Mamoru Yamanishi, Yusuke Takahata, Ichiro Kojima