1. School
of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
2. School
of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China
3. Department
of Medicinal Chemistry, College of Pharmacy, University of Florida, 1345 Center Drive, Gainesville, Florida 32610, United States