1. Department
of Chemistry, University of Victoria, P.O. Box 3065, Victoria, British Columbia, V8W 3V6, Canada
2. Department
of Biochemistry and Microbiology, University of Victoria, P.O. Box 3065, Victoria, British Columbia, V8W 3V6, Canada
3. Centre for Drug Research and Development, 2405 Wesbrook Mall, Vancouver, British Columbia, V6T 1Z3, Canada