1. Department of Organic Chemistry, Vrije Universiteit Brussels, Pleinlaan 2, B-1050 Brussels, Belgium, Department of Pharmaceutical Sciences and Biotechnology Center, University of Ferrara, I-44100 Ferrara, Italy, Medicinal Chemistry Group, Laboratory of Pharmacology and Chemistry, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709, Department of Human Physiology and Pharmacology “Vittorio Erspamer”, University “La Sapienza”, I-00185 Rome, Italy, and...