1. Institute of Medicinal and Pharmaceutical Chemistry; TU Braunschweig; Braunschweig Germany
2. Department of Pharmaceutical Chemistry; Al-Azhar University-Gaza; Gaza Palestine
3. Chemistry Department, Faculty of Science-North Jeddah; King Abdulaziz University; Jeddah Saudi Arabia
4. Chemistry Department, Faculty of Science; King Abdulaziz University; Jeddah Saudi Arabia