1. Drug Discovery Program, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, Department of Pharmacology, Georgetown University Medical Center, 3900 Reservoir Road NW, Washington, D.C. 20007, Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, Louisiana 71130-3932, Department of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Boulevard, Galveston,...