1. School
of Chemistry and BSRC, University of St. Andrews, St. Andrews, KY16 9ST, U.K.
2. Departments
of Chemistry and Bio-engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
3. Organic
Synthesis, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
4. Janssen
Pharmaceutica, CREATe, Turnhoutseweg 30, B-2340 Beerse, Belgium