1. Chemical Industries Division, Department of Applied Organic Chemistry; National Research Centre; El Behous Street Dokki Cairo Egypt
2. Department of Bioorganic Chemistry; Leibniz Institute of Plant Biochemistry; Weinberg 3 D-06120 Halle (Saale) Germany
3. Institute of Pharmacy; Martin-Luther University, Research Group of Drug Development and Analysis; Wolfgang-Langenbeck-Straße 4 06120 Halle (Saale) Germany