1. Chemistry Department, College of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
2. Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt
3. Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Division, National Research Center, Giza, Egypt
4. Department of Pharmaceutical Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt