1. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey;
2. Division of Pharmacology, Meikai University School of Dentistry, Sakado, Saitama, Japan;
3. Department of Chemistry, Faculty of Science, Ataturk University, Erzurum, Turkey;
4. Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia;
5. Department of Physiology, Faculty of Medicine, Ataturk University, Erzurum, Turkey;
6. Neurofarba Departmente Laboratorio di Chimica Bioinorganica, Universita degli Studi di Firenze, Sesto Fiorentino, Florence, Italy