1. a Department of Medicinal Chemistry , University of Utah , 30 S 2000 East, RM 311A, Salt Lake City, Utah, 84112‐5820, USA
2. c Covance Laboratories, Inc. , 3301 Kinsman Blvd., Madison, Wisconsin, 53704, USA
3. b Department of Biochemistry , University of Utah , 30 S 2000 East, RM 311A, Salt Lake City, Utah, 84112‐5820, USA
4. d University of Utah , School of Medicine, 50 N. Medical Drive, Salt Lake City, Utah, 84132, USA