1. Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
2. School of Pharmacy
3. Tongji Medical College
4. Huazhong University of Science and Technology
5. Wuhan 430030
6. State Key Laboratory of Phytochemistry and Plant Resources in West China
7. Kunming Institute of Botany
8. Chinese Academy of Sciences
9. Kunming 650204
10. People's Republic of China