1. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey,
2. Faculty of Pharmacy, Ataturk University, Erzurum, Turkey,
3. Department of Chemistry, Faculty of Science, Ataturk University, Erzurum, Turkey,
4. Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia, and
5. Polo Scientifico, Laboratorio di Chimica Bioinorganica, Universita degli Studi di Firenze, Sesto Fiorentino (Firenze), Italy