1. Department of Chemistry, Faculty of Arts and Sciences, İnönü University, Malatya, Turkey;
2. Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, İnönü University, Malatya, Turkey;
3. Dipartimento Neurofarba, Sezione Di Scienze Farmaceutiche E Nutraceutiche e Laboratorio Di Chimica Bioinorganica, Universita` Degli Studi Di Firenze, Florence, Italy