1. Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
2. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
3. Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China