1. Medicinal Chemistry, Department of Pharmacy and Pharmacology & Sterix Ltd., and Department of Chemistry, University of Bath, Bath BA2 7AY, U.K., Endocrinology and Metabolic Medicine and Sterix Ltd., Faculty of Medicine, Imperial College London, St. Maryʼs Hospital, London W2 1NY, U.K., IPSEN System Biology, 91966 Les Ulis, France, Istituto di Biostrutture e Bioimmagini-CNR, Naples, Italy, and Laboratorio di Chimica Bioinorganica, Università degli Studi di Firenze, Florence, Italy