1. Department of Bioorganic and Organic Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
2. Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, Mlynská dolina, 842 15 Bratislava 4, Slovakia
3. Trelleborg Bohemia, Akademika Bedrny 531/8a, Věkoše, 500 03 Hradec Králové Czech Republic
4. Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 532 10 Pardubice 2, Czech Republic
5. Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
6. Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic