1. Division of Medicinal Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
2. Frontier Medicines, 151 Oyster Point Blvd., South San Francisco, California 94080, United States
3. Novartis Institutes for Biomedical Research, Chemical Biology and Therapeutics, 4002 Basel, Switzerland
4. Astex Pharmaceuticals, 436 Cambridge Science Park, Milton Road, Cambridge CB4 0QA, United Kingdom