1. Department of Inorganic Chemistry National Research Centre Giza Egypt
2. Department of Biochemistry and Molecular Biology Theodor Bilharz Research Institute Giza Egypt
3. Division of Pharmaceutical and Drug Industries, Department of the Chemistry of Natural and Microbial Products National Research Centre Giza Egypt
4. Faculty of Science Ain Shams University Cairo Egypt
5. Department of Microbial Chemistry National Research Centre Giza Egypt