1. Dipartimento Farmaco-Chimico, University of Messina, Via SS. Annunziata, Messina 98168, Italy
2. Dipartimento di Scienze Chimiche, University of Catania, Viale A. Doria 6, Catania 95125, Italy
3. Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Łódź, 90-151 Łódź, Muszyńskiego 1, Poland