1. State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
2. State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
3. Faculty of Pharmacy, Kinki University, Higashiosaka, Osaka 577-8502, Japan