1. CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences (CAS); Lanzhou 730000 PR China
2. Centre of Resource Chemical and New Material, Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences; Qingdao 266100 PR China
3. Gansu University of Chinese Medicine; Lanzhou 730000 PR China