1. Dipartimento di Chimica Ugo Schiff, Università degli Studi di Firenze, Sesto Fiorentino (Firenze), Italy,
2. Chemistry Department, Science Faculty, Ataturk University, Erzurum, Turkey,
3. Neurofarba Department, Section of Pharmaceutical and Nutriceutical Sciences, Università degli Studi di Firenze, Sesto Fiorentino (Florence), Italy, and
4. Department of Zoology, College of Science, King Saud University, Riyadh-Saudi Arabia