Patents by Inventor Richard E. Shuman

Richard E. Shuman 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).

  • Method for introducing a 1,2 double bond into azasteroids
    Patent number: 5021575
    Abstract: A process for introducing a 1,2 double bond into a compound of the formula ##STR1## which comprises the process of (a) treating the compound of formula I with oxalyl chloride; (b) brominating the product of step (a) followed by in situ dehydrobromination; (c) deprotecting the product of step (b) to yield the .alpha. and .beta. isomers; (d) dehydrobrominating the product of step (c), which results in the introduction of a double bond at the 1,2 position.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: June 4, 1991
    Assignee: Merck & Co., Inc.
    Inventors: Anthony O. King, Robert K. Anderson, Richard E. Shuman, Leonard M. Weinstock