1. Department of Chemistry, Faculty of Science, Alexandria University, P.O. Box 426, Ibrahimia, 21525 Alexandria, Egypt
2. Department of Pharmaceutical Medicinal Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo 11651, Egypt
3. Department of Microbiology and Immunology, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo 11651, Egypt