Patents Represented by Attorney Gould George M.

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  • Natural vitamin E intermediate
    Patent number: 4898962
    Abstract: An asymmetric synthesis for Vitamin E in an optically active pure form for 4-(2,5-diloweralkanoyloxy)-3,4,6-trimethylphenyl-butan-2-one and intermediates therein.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: February 6, 1990
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Ka-kong Chan, Gabriel G. Saucy