1. School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, Chongqing 401331, China
2. College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
3. State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, China
4. Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou 646106, China