Malík, Ivan; Dept. of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University in Bratislava, Slovak Republic; Csöllei, Jozef; Dept of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences in Brno, Czech Republic; Bukovský, Marián; Dept. of Cell and Molecular Biology of Drugs, Faculty of Pharmacy, Comenius University in Bratislava, Slovak Republic