Three main saponins were isolated from the seeds of Albizzia lucida. Their structures were established by spectral analyses and chemical and enzymatic transformations as 3-O-[β-d-xylopyranosyl(1→2)-α-l-arabinopyranosyl(1→6)] [β-d-glucopyranosyl(1→2)] β-d-glucopyranosyl echinocystic acid; 3-O-[α-l-arabinopyranosyl(1→6)][β-d-glucopyranosyl(1→2)]-β-d-glucopyranosyl echinocystic acid and 3-O-[β-d-xylopyranosyl(1→2)-β-d-fucopyranosyl(1→6)-2-acetamido-2-deoxy-β-d-glucopyranosyl echinocystic acid, characterized as its methyl ester.
cytotoxic activity, Leguminosae, seeds, Albizzia lucida, Mimosaceae, echinocystic acid glycosides
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