1. Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena Humboldtstr 8 07743 Jena Germany
2. New address: Department of Analytical Chemistry Faculty of Chemistry University of Bialystok Ciolkowskiego 1K, 15–245 Bialystok Poland
3. Department of Biomolecular Chemistry Leibniz Institute for Natural Product Research and Infection Biology (HKI) Beutenbergstr 11a 07745 Jena Germany
4. Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali Università degli Studi di Messina V.le F. Stagno d'Alcontres, 31 98166 Messina Italy
5. Faculty of Biological Sciences Friedrich Schiller University Jena 07743 Jena Germany