1. Department of Pharmacognosy, College of Pharmacy, King-Saud University, P.O. Box 2457, Saudi Arabia
2. Department of Organic Chemistry, Faculty of Science, Al-Azhar University, Assuit, Egypt
3. Department of Pharmacognosy, College of Pharmacy, King-Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
4. Department Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Al-Azhar University, Assuit, Egypt
5. Department of Drug Radiation Research, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
6. Department of Chemistry, Faculty of Science, Mansura University, Mansura, Egypt
7. Department of Pharmacognosy, Faculty of Pharmacy, Mansura University, Mansura, Egypt
8. Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia