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As part of our continuing study of apoptosis-inducing saponins from Cameroonian  Albizia  genus, one new triterpenoid saponin, named adianthifolioside J ( 1 ), together with the known gummiferaoside E ( 2 ), were isolated from  Albizia adianthifolia  stems. The structure of the new saponin ( 1 ), was established on the basis of extensive analysis of 1 D and 2 D NMR ( 1 H-,  13 C-NMR, DEPT, COSY, TOCSY, NOESY, HSQC, HSQC-TOCSY and HMBC) and HRESIMS experiments, and by chemical evidence as 3- O -[ β -D-xylopyranosyl-(1→2)- β -D-fucopyranosyl-(1→6)- β -D-glucopyranosyl]-21- O -{(2E,6S)-2-(hydroxymethyl)-6-methyl-6- O -{4- O -[(2E,6S)-2,6-dimethyl-6- O -( β -D-quinovopyranosyl)octa-2,7-dienoyl]-( β -D-quinovopyranosyl)octa-2,7-dienoyl]}acacic acid-28- O - β -D-glucopyranosyl-(1→3)-[5- O -acetyl- α -L-arabinofuranosyl-(1→4)]- α -L-rhamnopyranosyl-(1→2)- β -D-glucopyranosyl ester ( 1).  The pro-apoptotic activity of the new isolated saponin  1  was evaluated, using Annexin V-FITC binding assay, on the A431 human epidermoid cancer cell. The result showed that adianthifolioside J ( 1 ) displayed weak pro-apoptotic activity.

New triterpenoid saponin from the stems of Albizia adianthifolia (Schumach.) W.Wight