1. Center
for Studies on Medicinal Plants and Traditional Medicine, Institute of Medical Research and Medicinal Plants Studies (IMPM), P.O. Box 6163, Yaoundé, Cameroon
2. Laboratory
of Pharmacognosy, Department of Pharmacy, CIRM, University of Liège, B36, 4000 Liège, Belgium
3. Department
of Organic Chemistry, Faculty of Sciences, University of Yaoundé I, P.O.
Box 812, Yaoundé, Cameroon
4. Centre
d’Ingénierie des Protéines, Université de Liège, B6, 3 Allée de la Chimie, 4000 Liège, Belgium