1. State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan P. R. China
2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
3. National
Center for Natural Products Research, Research Institute of Pharmaceutical
Science, Department of Pharmacognosy, and Department of Pharmacology,
School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States