1. Department of Chemistry, Faculty of Science; University of Jeddah; Jeddah Saudi Arabia
2. Department of Chemistry, Faculty of Science; Assiut University; Assiut Egypt
3. Department of Chemistry, Faculty of Science; King Abdulaziz University; Jeddah Saudi Arabia
4. Institute of Medicinal and Pharmaceutical Chemistry; TU Braunschweig; Braunschweig Germany