1. Laboratoire des Aminoacides, Peptides, et Protéines (LAPP), UMR 5810, Faculté de Pharmacie, Université Montpellier I et II, 15 avenue Charles Flahault, 34060 Montpellier, France, Department of Pharmaceutical Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Kraków, Poland, and Department of Medicinal Chemistry, Institute of Pharmacology, Polish Academy of Sciences, 12 Smȩtna Street, 31-343 Kraków, Poland