1. Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy; Beni-Suef University; Beni-Suef; Egypt
2. Department of Medicinal Chemistry, Faculty of Pharmacy; Beni-Suef University; Beni-Suef; Egypt
3. Department of Pharmacology, Faculty of Pharmacy; Beni-Suef University; Beni-Suef; Egypt
4. Department of Chemistry; University of Florida; Gainesville; FL; USA
5. Department of Pharmacognosy, Faculty of Pharmacy; Beni-Suef University; Beni-Suef; Egypt