1. CNRS, Centre de Recherche Paul Pascal (CRPP), UMR 5031, F-33600 Pessac, France
2. Université Bordeaux, CRPP, F-33600 Pessac, France
3. Department of Chemistry and Faculty of Pharmacy, Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, QC Canada, H3C 3J7