1. Center of Excellence for Polysaccharide Research Institute for Organic Chemistry and Macromolecular Chemistry Friedrich‐Schiller University of Jena Humboldtstraße 10 07743 Jena Germany
2. Science of Polymeric Materials Department of Biomaterial Sciences Graduate School of Agricultural and Life Sciences The University of Tokyo 1‐1‐1 Yayoi, Bunkyo‐ku Tokyo 113‐8657 Japan
3. Institute of Organic Chemistry Graz University of Technology Stremayrgasse 9 8010 Graz Austria