1. Department
of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J1P3, Canada
2. GlaxoSmithKline
Pharmaceuticals Inc., 709 Swedeland
Road, P.O. Box 1539, UMW 2810, King of Prussia, Pennsylvania 19406, United States
3. Centre
for Catalysis Research and Innovation (CCRI) and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N6N5, Canada