Affiliation: | 1. Faculty of Science, Department of Organic and Nuclear Chemistry, Charles University in Prague, Hlavova 2030/8, 128 43 Prague 2 (Czech Republic), Fax: (+420)?221951326;2. Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6 (Czech Republic);3. Institut für Chemie, Technische Universit?t Berlin, Strasse des 17 Juni 135, 10623 Berlin (Germany) |