1. Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, P. R. China
2. New Drug R&D Department of Kunming Institute of Kidney Disease, Kunming, P. R. China
3. Shang Hai University of Medicine & Health Sciences, Shang Hai, P. R. China
4. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, P. R. China