1. Research Group of Organic Chemistry
2. Department of Chemistry and Department of Bio-engineering Sciences
3. Faculty of Science and Bio-engineering Sciences
4. Vrije Universiteit Brussel
5. B-1050 Brussels
6. NMR and Structure Analysis Unit
7. Department of Organic and Macromolecular Chemistry
8. Ghent University
9. 9000 Ghent
10. Belgium