1. Photochemistry Department (Heterocyclic Unit), National Research Centre, Dokki, Giza, Egypt
2. Chemistry Department, Faculty of Science, Jazan University, Jazan, Saudi Arabia
3. Department of Pharmacognosy and Natural Products Chemistry Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
4. Department of Pharmaceutical Biology Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt