Pro-apoptotic activity of new triterpenoid saponins from the roots of Albizia adianthifolia (Schumach.) W.Wight - Noté, O P; Kamto, E LD; Toukea, D D; Aouazou, S A; Ngo Mbing, J; Muller, C D; Guillaume, D; Pegnyemb, D E (Fitoterapia, 2018)