1. Department of Organic Chemistry
2. P.J. Šafárik University
3. Sk-040 01 Košice
4. Slovak Republic
5. Chemical Biology of Microbe-Host Interactions
6. Leibniz Institute for Natural Product Research and Infection Biology e.V.
7. Hans-Knöll-Institute (HKI)
8. 07745 Jena
9. Germany
10. Institute of Pharmacology
11. Faculty of Medicine
12. 040 66 Košice