1. State Key Laboratory of Phytochemistry and Plant Resources in West China
2. Kunming Institute of Botany
3. Chinese Academy of Sciences
4. Kunming 650201
5. China
6. Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
7. School of Pharmacy
8. Tongji Medical College
9. Huazhong University of Science and Technology
10. Wuhan 430030