Patents Represented by Attorney G. Butterfield

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  • Stereoselective preparation of substituted piperidines
    Patent number: 5686615
    Abstract: Novel processes are disclosed for the stereoselective preparation of substituted piperidine derivatives of the formulae ##STR1## wherein R.sup.1 and R.sup.2 are defined as below, useful as substance P receptor antagonists and in treating diseases mediated by an excess of substance P.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: November 11, 1997
    Assignee: Pfizer Inc
    Inventor: Terry J. Rosen