1. Insitute for Chemistry Humboldt Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
2. Department of Pharmaceutical Chemistry College of Pharmacy Helwan University Cairo 11795 Egypt
3. CNRS Institut de Chimie de Nice Université Côte d'Azur 06108 Nice France
4. Department of Toxicology, Institute of Nutritional Science University of Potsdam Arthur-Scheunert-Allee 114–116 14558 Nuthetal Germany
5. Department of Molecular Biology University of Duisburg-Essen Hufelandstrasse 55 45147 Essen Germany
6. Unit ‘Sexually Transmitted Bacterial Infections' Department of Infectious Diseases Robert Koch Institute 13353 Berlin Germany
7. Universität Potsdam Institut für Chemie Karl- Liebknecht- Strasse 24–25, Haus 25 14476 Golm Germany
8. Chemistry Department Faculty of Science Suez Canal University Ismailia 41522 Egypt