1. The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemical Biology, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
2. School of Pharmaceutical Sciences and the Key Laboratory for Chemical Biology of Fujian Province; Xiamen University; South Xiang-An Road Xiamen 361102 P.R. China
3. The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry; Tsinghua University; Beijing 100084 P.R. China