1. State
Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
2. School
of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
3. School
of Life Sciences, Lanzhou University, Lanzhou 730000, P. R. China
4. State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Macau University of Science and Technology, Taipa, Macau, P. R. China