1. Department of Organic & Bioorganic Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 03, Hradec Králové, Czech Republic
2. Department of Biological & Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10, Pardubice, Czech Republic
3. Department of Chemistry, Faculty of Science, J. E. Purkinje University, Pasteurova 3632/15, 400 96, Ústí nad Labem, Czech Republic