1. Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia;
2. National Organization for Drug Control and Research, Giza, Egypt;
3. Biochemistry Department, College of Sciences, King Saud University, Riyadh, Saudi Arabia;
4. Department of Surgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia;
5. Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, Kuantan, Pahang Darul Makmur, Malaysia