1. Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C23, Saarbrücken D-66123, Germany
2. Pharmaceutical Organic Chemistry Department, Assiut University, Assiut 71526, Egypt
3. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, October University for Modern Sciences and Arts, Cairo 12451, Egypt
4. Department of Chemistry of Natural and Microbial Products, Institute of Pharmaceutical and Drug Industries Research, National Research Centre, El-Buhouth St., Dokki, P.O. Box 12622 Cairo 12451, Egypt
5. Department of Drug Design and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Campus Building E81, Saarbrücken 66123, Germany