1. The Institute of Organic Chemistry and BiochemistryCzech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
2. Department of Organic ChemistryFaculty of ScienceCharles University Hlavova 2030/8 12843 Prague 2 Czech Republic
3. Higher Chemical CollegeD. I. Mendeleev University of the, Chemical Technology of Russia Miusskaya sq. 9 Moscow 125047 Russia