1. School of Pharmacy; Lanzhou University; Lanzhou China
2. Guiyang College of Traditional Chinese Medicine; Guiyang China
3. State Key Laboratory of Applied Organic Chemistry and Department of Chemistry; Lanzhou University; Lanzhou China
4. Henan Engineering Research Center of Chiral Hydroxyl Pharmaceutical; School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan China