1. Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany;
2. Department of Phytochemistry, National Research Centre, Giza, Egypt;
3. Department of Natural Compounds Chemistry, National Research Centre, Giza, Egypt;
4. Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-Cho, Tokushima, Japan;
5. Pharmacognosy Department, Faculty of Pharmacy, Deraya University, Minia, Egypt;
6. Department of Microbial Drugs, Helmholtz Centre for Infection Research, Braunschweig, Germany;
7. Department of Chemistry, Faculty of Science, Aswan University, Aswan, Egypt;
8. Debbab Med, Munich, Germany;
9. Division of Pharmacognosy, Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden;
10. Department of Chemistry, Faculty of Science, El-Menoufia University, Shebin El-Kom, Egypt;
11. Genetic Engineering and Biotech. Division, National Research Centre, Giza, Egypt;
12. Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA