1. Laboratory for Organic and Microwave-Assisted Chemistry
(LOMAC), University of Leuven, Celestijnenlaan 200F, B-3001 Heverlee,
Leuven, Belgium, Devgen NV, Technologie Park 30, B-9052, Zwijnaarde,
Belgium, and Bioorganic Laboratory, Department of Chemistry, University
of Delhi, Delhi 110 007, India