Affiliation: | 1. Key Laboratory of Medicinal Chemistry for Natural Resources (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P.?R. China (phone: +86‐871‐5033644‐8899;2. fax: +86‐871‐5035538);3. College of Fundamental and Information Engineering, Yunnan Agricultural University, Kunming 650201, P.?R. China |