1 State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China [email protected] +86-871-65216953.
2 University of Chinese Academy of Sciences Beijing 100049 China.
3 School of Pharmaceutical Science, Yunnan Key Laboratory of Pharmacology of Natural Products, Kunming Medical University Kunming 650500 China.
4 School of Pharmaceutical Sciences, Peking University Health Science Center, Peking University Beijing 100191 China.