1. State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China
2. University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
3. Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi, Xinjiang 830011, P. R. China
4. Vigonvita Life Science Co., Ltd., 108 Yuxin Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, P. R. China