1. Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, 833 South Wood Street, Chicago, Illinois 60612, Department of Biochemistry and Biophysics, Oregon State University, ALS 2011, Corvallis, Oregon 97331, and College of Pharmacy, University of Hawaii at Hilo, 60 Nowelo Street, Suite 101, Hilo, Hawaii 96720