1. Department of Biochemical and Chemical Engineering Laboratory of Technical Biology TU Dortmund Emil-Figge-Strasse 66 44227 Dortmund Germany
2. Department of Chemistry and Chemical Biology NMR Laboratory TU Dortmund Otto-Hahn-Strasse 4a 44227 Dortmund Germany
3. Transfer Group Antiinfectives Leibniz Institute for Natural Product Research and Infection Biology Beutenbergstrasse 11a 07745 Jena Germany
4. Department of Biochemical and Chemical Engineering Chair for Bioprocess Engineering TU Dortmund Emil-Figge-Strase 66 44227 Dortmund Germany