1. Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; 130 Meilong Rd. Shanghai 200237 P. R. China
2. National Center for Drug Screening; State Key Laboratory of Drug Research; Shanghai Institute of Materia Medica; Chinese Academy of Sciences; 189 Guo Shoujing Rd. Shanghai 201203 P. R. China