1. The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine and China-Thailand Joint Research Institute of Natural MedicineShanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 People's Republic of China
2. CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 People's Republic of China