1. Institute of Materials and Environmental Chemistry
2. Research Centre for Natural Sciences
3. H-1117 Budapest
4. Hungary
5. Department of Organic Chemistry
6. Institute of Chemistry
7. Eötvös Loránd University
8. Institute of Biochemistry
9. Heinrich-Heine University
10. 40225 Düsseldorf
11. Germany
12. MTA-SZTE Stereochemistry Research Group
13. Institute of Pharmaceutical Chemistry
14. University of Szeged
15. H-6720 Szeged
16. Department of Chemistry and Chemical Engineering