1. 1Department of Chemistry, College of Science, King Saud University, Girls Section, P.O. Box 22452 Riyadh 11495, Saudi Arabia
2. 2Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riaydh 11451, Saudi Arabia
3. 3Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
4. 4National Organization for Drug Control and Research, Agouza, Giza 35521, Egypt