1. Research group of Organic Chemistry; Department of Chemistry and Department of Bio-engineering Sciences; Faculty of Science and Bio-engineering Sciences; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
2. Chemistry Department; Université de Namur; Rue de Bruxelles 61 5000 Namur Belgium
3. Department of Medicinal Chemistry; Galapagos NV; Generaal De Wittelaan L11-A3 2800 Mechelen Belgium