1. Chemistry of Natural and Microbial Products Department; National Research Center; Dokki Cairo Egypt
2. Chemistry of Natural Compounds Department; National Research Center; Dokki Cairo Egypt
3. Department of Chemistry, Faculty of Science; Cairo University; Giza Egypt
4. Department of Chemistry, Faculty of Applied Science; Umm Al-Qura University; Makkah Almukkarramah Saudi Arabia
5. Department of Pharmaceutical Chemistry, Faculty of Pharmacy; Helwan University; Ein Helwan Cairo Egypt
6. Research Unit; Saco Pharm. Co.; 6th October City Egypt