1. College of Pharmacy, Guangzhou Health Science College, Guangzhou, P. R. China
2. Henan Engineering Research Center of Funiu Mountain’s Medicinal Resources Utilization and Molecular Medicine, College of Medicine, Pingdingshan University, Pingdingshan, P. R. China
3. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, P. R. China
4. Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Dongguan, P. R. China