1. Department of Chemistry, University of Patras, 26500 Patras, Greece, Department of Biological Sciences, University of Calgary, 2500 University Drive N.W., Calgary AB, T2N 4NI, Canada, National Hellenic Research Foundation, Institute of Organic and Pharmaceutical Chemistry, 11635 Athens, Greece, Department of Biology and Genetics, Medical Faculty, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece, and Department of Fertility, Gynecological Center of Patras, 26221 Patras, Greece