1. Medicinal Chemistry, Department of Pharmacy and Pharmacology & Sterix Ltd., University of Bath, Bath BA2 7AY, UK, Endocrinology and Metabolic Medicine and Sterix Ltd., Faculty of Medicine, Imperial College, St. Mary's Hospital, London W2 1NY, UK, Department of Chemistry, University of Bath, BA2 7AY, UK, IPSEN System Biology, 91966 Les Ulis, France, Experimental Oncology Research IPSEN/Biomeasure, Inc., 27 Maple Street Milford, Massachusetts 01757