Patents Represented by Attorney Ramymond M. Speer

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  • Nitrogen deprotected 4-acyloxyazetidin-2-ones
    Patent number: 5177201
    Abstract: The 4-acyloxyazetidin-2-ones, which are intermediates in the production of carbapenems and penems, are produced from nitrogen deprotected 4-furanylazetidin-2-ones.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: January 5, 1993
    Assignee: Merck & Co., Inc.
    Inventors: Joseph E. Lynch, William L. Laswell, Ralph P. Volante, Ichiro Shinkai