1. Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0810, Laboratory of Medicinal Chemistry, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland 21702, Department of Pharmacology, University of North Carolina, School of Medicine, Chapel Hill, North Carolina 27599-7365, and Department of Cardiology, Lund University Hospital, SE-221 85...