1. Chemistry Department and Centre for Biotechnology, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario
L2S 3A1, Canada
2. Department of Medicinal Chemistry, School of Pharmacy, The University of Mississippi, 419 Faser Hall, P.O.
Box 1848, University, Mississippi 38677-1848, United States
3. Noramco, Inc., 503 Carr Road, Suite 200, Wilmington,
Delaware 19809, United States