1. Department of Plant Sciences, Microbiology and Biotechnology, Makerere University, Kampala P.O. Box 7062, Uganda
2. Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
3. Department of Biology, University of Nairobi, Nairobi P.O. Box 30197-0100, Kenya
4. Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, 06108 Halle (Saale), Germany
5. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
6. Department of Chemistry, University of Nairobi, Nairobi P.O. Box 30197-0100, Kenya
7. Department of Chemistry, Makerere University, Kampala P.O. Box 7062, Uganda
8. Transfer Group Anti-Infectives, Leibniz Institute for Natural Product Research and Infection Biology, Leibniz-HKI, Beutenbergstr. 11a, 07745 Jena, Germany