1. State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
2. China Pharmaceutical University
3. Nanjing 210009
4. China
5. Department of Chemistry
6. College of Materials & Chemical Engineering
7. Chuzhou University
8. Chuzhou 239000
9. State Key Laboratory of Chemical Biology and Drug Discovery
10. Department of Applied Biology and Chemical Technology
11. The Hong Kong Polytechnic University
12. Kowloon
13. P. R. China