1. Faculty of Chemistry
2. University of Wrocław
3. 50-383 Wrocław
4. Poland
5. Institute of Bioorganic Chemistry
6. Polish Academy of Sciences
7. 61-704 Poznań
8. Department of Biotechnology
9. Chemistry and Pharmacy
10. University of Siena Via Aldo Moro
11. 2-53100 Siena
12. Italy