1. Institute of Organic Chemistry, Gottfried Wilhelm Leibniz University Hannover, 30167Hannover, Germany
2. Institute of Organic Chemistry, Justus Liebig University, 35392Giessen, Germany
3. Centre of Biomolecular Drug Research (BMWZ), Gottfried Wilhelm Leibniz University Hannover, 30167Hannover, Germany
4. Helmholtz Centre for Infection Research (HZI), 38124Braunschweig, Germany