1. Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P.O. Box 8888, Succ. Centre‐Ville, Montreal, Québec, H3C 3P8 (Canada), Fax: (+1) 514‐987‐4054
2. CERMAV CNRS (Affiliated to Université Joseph Fourier and belonging to ICMG), BP 53, 38041 Grenoble cedex 9 (France), Fax: (+33) 476‐547‐203