1. State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
2. School of Chemistry and Pharmaceutical Sciences
3. Guangxi Normal University
4. Guilin 541004
5. P. R. China
6. Wuhan Britain-China School
7. Wuhan 430015
8. State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE)
9. College of Chemistry and Molecular Sciences
10. Wuhan University
11. Wuhan 430072