1. Équipe “Chimie des Substances Naturelles” Université Paris-Saclay, CNRS, BioCIS, 5 Rue J.-B. Clément, 92290 Châtenay-Malabry, France
2. Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
3. Faculty of Pharmacy, Microbiology, Bioorganic and Macromolecular Chemistry Unit, Université Libre de Bruxelles, Campus de la Plaine-CP 206/04, Boulevard du Triomphe, ACC.2, PO Box 1050, 1050 Bruxelles, Belgium
4. Department of Chemistry, Higher Teachers Training College, University of Maroua, P.O. Box 55, Maroua, Cameroon
5. Institut de Chimie des Substances Naturelles, CNRS, ICSN
UPR 2301, Université Paris-Saclay, 91198 Gif-sur-Yvette, France