Patents by Inventor Sing-Yuen Sit

Sing-Yuen Sit 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).

  • Antihypercholesterolemic tetrazol-1-yl compounds
    Patent number: 4870187
    Abstract: Compounds of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each are independently hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or trifluoromethyl;R is hydrogen, C.sub.1-4 alkyl or phenyl;A is ##STR2## R.sup.5 is hydrogen, a hydrolyzable ester group or a cation to form a non-toxic pharmaceutically acceptable salt,are novel antihypercholesterolemic agents which inhibit cholesterol biosynethesis. Intermediates and processes for their preparation are disclosed.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: September 26, 1989
    Assignee: Bristol-Myers Company
    Inventors: Sing-Yuen Sit, John J. Wright