Patents by Inventor Suk K. Lee

Suk K. Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ginkgolide derivatives and a process for preparing them
    Patent number: 5466829
    Abstract: The present invention relates to new ginkgolide derivatives of the formula (I) as below which represents PAF-antagonistic activity and the method for the preparation thereof, by that the cyclic compounds of substituted Ginkgolide B derivatives are produced by reacting the known Ginkgolide B and C mixture having the hydroxy group in 1- and 10-carbon with acid, then they are separated, and separated Ginkgolide B derivatives is hydrolyzed in acidic aqueous solution. And the present invention is related to make use it as PAF-antagonistic agent through separating the only one component of the new ginkgolide derivative by those methods.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: November 14, 1995
    Assignee: Sunkyong Industries Co., Ltd.
    Inventors: Hwa K. Park, Suk K. Lee, Pyeong U. Park, Wie J. Kwan