Affiliation: | 1. Department of Chemistry and Bioactivity of Traditional Chinese Medicine, School of Pharmacy, Shanghai Jiaotong University, 800 DongChuan Road, 200240, Shanghai, P. R. China;2. Department of Natural Product Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, 200433 Shanghai, P. R. China, (phone: +86‐21‐25070386;3. fax: +86‐21‐25070386) |