Patents by Inventor Yi Fong Wang

Yi Fong Wang 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).

  • Patent number: 5106750
    Abstract: A process for irreversible regio- and stereoselective enzyme catalyzed acylation of alcohols using enol esters as acylating reagents is disclosed. The present invention permits the selective modification of hydroxyl group(s) of chiral and meso alcohols, including sugars, organometallics, and glycosides. The enol freed upon transesterification rapidly tautomerizes to the corresponding volatile aldehyde or ketone thereby preventing the reverse reaction from occurring.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: April 21, 1992
    Assignee: G. D. Searle & Co.
    Inventors: Chi-Huey Wong, Yi-Fong Wang, William J. Hennen, Kevin A. Babiak, John H. Dygos, John S. Ng