1. Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam., 2, 166 10, Prague 6, Czech Republic
2. Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague, Czech Republic
3. Higher Chemical College, D. I. Mendeleev University of the Chemical Technology of Russia, Miusskaya sq. 9, 125047, Moscow, Russian Federation