1. Center
for Organic and Medicinal Chemistry, Research Triangle Institute, P.O. Box 12194, 3040 Cornwallis Road, Research Triangle Park, North Carolina 27709, United States
2. Department
of Physiology and Biophysics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12th Avenue North, Sherbrooke, Quebec J1H
5N4, Canada