1. Department of Organic Chemistry, Faculty of Science, University of Yaounde I, Yaounde, Cameroon
2. UFR Sciences Fondamentales et Appliquées, Team Récepteurs, Régulations, Cellules Tumoraales (2RCT)-EA 3842 CAPTuR, Pôle Biologie Santé-Bât. B36/B37, University of Poitiers, Poitiers, France
3. Department of Chemistry, Faculty of Science, University of Ngaoundere, Ngaoundéré, Cameroon
4. Department of Biomedical Science, Faculty of Science, University of Ngaoundere, Ngaoundéré, Cameroon
5. Institute of Chemistry IC2MP, University of Poitiers, Poitiers, France
6. Laboratory of NMR and Molecular Imaging, Department of General, Organic Chemistry and Biomedical, University of Mons, Mons, Belgium