1. Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
2. Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
3. Institute of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
4. Department of Chemistry, University of Jyväskulä, FIN-40014 Jyväskulä, Finland