1. Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Culture Road, Jinan, Shandong 250012, PR China
2. Department of Pharmacy, Faculty of Health Science, American University of Madaba, P.O. Box 2882, Amman 11821, Jordan
3. Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, K. U. Leuven, Herestraat 49 Postbus 1043 (09.A097), Leuven B-3000, Belgium
4. China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province, 44 West Culture Road, Jinan, Shandong 250012, PR China