Patents Represented by Attorney Ellen Ciambone Coletti

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  • Compounds, process and intermediates
    Patent number: 5110958
    Abstract: The claimed invention relates to intermediate compounds of the formula ##STR1## wherein R is hydrogen or methyl, R.sub.1 and R.sub.2 each, independently, is hydrogen, lower alkyl or aryl, or taken together are lower alkylene of from 3 to 6 carbon atoms, and the dotted (. . . ) line is an optional bond.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: May 5, 1992
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Enrico G. Baggiolini, Andrew D. Batcho, Gary A. Truitt, Milan R. Uskokovic, Peter M. Wovkulich