1. Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, Xinjiang, P. R. China
2. University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
3. Yunnan Institute for Food and Drug control, Kunming, 650201, Yunnan, P. R. China
4. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, P. R. China