1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
2. Yunnan University of Traditional Chinese Medicine, Kunming 650504, People's Republic of China
3. Henan University of Traditional Chinese Medicine, Zhengzhou 450008, People's Republic of China
4. School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, People's Republic of China