1. Institute of Organic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany, Swiss Tropical Institute, Socinstrasse 57, CH-4002 Basel, Switzerland, Department of Medicinal Chemistry, Danish University of Pharmaceutical Sciences, Universitetsparken 2, DK-2100 Copenhagen, Denmark, Institute for Molecular Infection Biology, University of Würzburg, Röntgenring 11, D-97070 Würzburg, Germany, Faculté des Sciences, Université de Kinshasa, B.P. 202, Kinshasa XI, Democratic Republic of Congo,...