1. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira , Gezira , Sudan
2. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University-Egypt , New Damietta 34518 , Egypt
3. Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 6th of October City , Giza 12566 , Egypt
4. Department of Biology, College of Science and Technology, Florida A&M University , Florida , USA
5. Department of Pharmacognosy, Faculty of Pharmacy, University of Khartoum , Khartoum , Sudan
6. Department of Pharmacognosy, College of Pharmacy, King Saud University , Riyadh , Saudi Arabia