1. Institute of Medical Research and Medicinal Plant Studies, Yaoundé, Cameroon
2. Faculty of Sciences, Department of Organic Chemistry, TWAS Research Unit (TRU) of University of Yaounde I, Yaoundé, Cameroon
3. H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
4. Department of Chemistry, Higher Teacher Training College, The University of Bamenda, Bambili-Bamenda, Cameroon
5. Laboratory for Phytobiochemistry and Medicinal Plant Study, Antimicrobial and Biocontrol Agent Unit, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
6. Department of Chemistry, Higher Teachers’ Training College, University of Yaoundé I, Yaoundé, Cameroon