1. Department of Drug Sciences and Health Products
2. University of Messina
3. 98168 Messina
4. Italy
5. Department of Chemical Sciences
6. 98166 Messina
7. Department of Medicinal and Organic Chemistry
8. University of Granada
9. Faculty of Pharmacy
10. 18071 Granada
11. Spain
12. Institute for Molecular Infection Biology
13. University of Würzburg
14. Würzburg 97074
15. Germany
16. University of Catania
17. 95125 Catania
18. Institute of Pharmacy and Biochemistry
19. University of Mainz
20. D-55128 Mainz