1. State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
2. Lingang Laboratory, Shanghai 200031, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. Nanchang University, Jiangxi 330031, China
5. Department of Organic Chemistry, University of Debrecen, Debrecen, P.O. Box 400, Debrecen H-4002, Hungary