1. Department of Chemistry of Natural and Microbial Products; National Research Centre; Dokki 12622 Giza Egypt
2. Chemistry Department, Faculty of Applied Science; Umm Al-Qura University; Makkah Almukkarramah 21955 Saudi Arabia
3. Department of Pharmacology, Medical Division; National Research Centre; 33 EL Bohouthst (former EL Tahrirst), Dokki 12622 Giza Egypt
4. Department of Chemistry, Faculty of Science; Cairo University; Giza 12613 Egypt