1. Department
of Organic Chemistry, University of Chemical Technology, Technická
5, 166 28 Prague, Czech Republic
2. Department
of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 128 43 Prague, Czech Republic
3. Institute
of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague, Czech Republic