1. Department of Organic Chemistry, Organic and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
2. Department of Organic Chemistry, NMR and Structure Analysis Unit, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
3. Laboratory of Pharmaceutical Microbiology, Ghent University, Harelbekestraat 72, 9000 Ghent (Belgium)