1. Department of Biomolecular Chemistry; Leibniz Institute for Natural Product Research and Infection Biology, HKI; Beutenbergstrasse 11a 07745 Jena Germany
2. Transfer Group Antiinfectives; Leibniz Institute for Natural Product Research and Infection Biology (HKI); 07745 Jena Germany
3. Friedrich Schiller University Jena; 07743 Jena Germany