1. Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province Generic Drug Research Center of Guizhou Province Zunyi Medical University Zunyi Guizhou 563000 People's Republic of China
2. Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education School of Pharmacy Zunyi Medical University Zunyi Guizhou People's Republic of China
3. School of Medicine Yale University New Haven Connecticut 06510 United States
4. Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 People's Republic of China