1. State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry China Pharmaceutical University 24 Tong Jia Xiang Nanjing Jiangsu 210009 China
2. State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences 555 Zu Chong Zhi Road Shanghai 201203 China
3. School of Pharmaceutical Science and Technology Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 China