1. UMR 176 CNRS-Institut Curie, Laboratoire de Pharmacochimie, Section de Recherche, Batiment 110, Centre Universitaire, 91405 Orsay, France, Johnson&Johnson Pharmaceutical Research and Development, Medicinal Chemistry Department, Campus de Maigremont BP315, Val de Reuil, France, Johnson&Johnson Pharmaceutical Research and Development, Virology Drug Discovery, Tumhoutseweg 30 B-2340 Beerse, Belgium, and TIBOTEC, Generaal De Wittelaan L 11 B3, B-2800 Mechelen, Belgium