1. Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
2. Department of Applied Organic Chemistry, National Research Center, Dokki, Cairo 12622, Egypt
3. Department of Pharmaceutical Chemistry, College of Pharmacy, Egyptian Russian University, Badr City, Cairo 11829, Egypt
4. Department of Clinical Microbiology and Immunology, College of Medicine, Mansoura University, Mansoura 35516, Egypt
5. X-Ray Crystallography Unit, School of Physics, Universiti Sains Malaysia (USM), 11800 Penang, Malaysia