1. Drug Metabolism and Pharmacokinetics Research Laboratories, Daiichi Sankyo Co., Ltd., Tokyo, Japan,
2. Organic Synthesis Department, Daiichi Sankyo RD Novare Co., Ltd., Tokyo, Japan,
3. Discovery Science and Technology Department, Daiichi Sankyo RD Novare Co., Ltd., Tokyo, Japan,
4. ArQule, Inc., Woburn, MA, USA, and
5. Research Function, Daiichi Sankyo Co., Ltd., Tokyo, Japan