1. Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P. R. China
2. Departments of Pharmacology, School of Pharmacy, China Pharmaceutical University, Nanjing 211100, P. R. China
3. Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, Nanjing 211100, P. R. China