1. Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
2. School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. China
3. Hunan Provincial Key Laboratory of Neurorestoratology, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410006, P.R. China
4. School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200241, P. R. China