1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, People’s Republic of China
2. University of the Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3. Yunnan Key Laboratory of Natural Medicinal Chemistry, Chinese Academy of Sciences, Kunming, Yunnan 650201, People’s Republic of China