1. Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062 (P. R. China)
2. Chinese National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute ofMateria Medica, Chinese Academy of Sciences, 189 Guo Shou Jing Road, Shanghai, 201203 (P. R. China)