1. Discovery Chemistry, Department of Metabolism and Pharmacokinetics, Department of Computer Aided Drug Design, and Department of Chemical Synthesis, Bristol-Myers Squibb Co, 5 Research Parkway, Wallingford, Connecticut 06492, Discovery Chemistry, Bristol-Myers Squibb Co, Candiac, Quebec, Canada, and Department of Oncology Drug Discovery, Department of Metabolism and Pharmacokinetics, Department of Macromolecular Structure, Bristol-Myers Squibb Co, Route 206 and Province Line Road, Princeton, New Jersey 08540