Triterpenoid saponins from Schefflera arboricola (original) (raw)

Nine triterpenoid saponins were isolated from the leaves and stems of Schefflera arboricola. The saponins were characterised, on the basis of chemical and spectral evidence, as 3-O-[a-l-rhamnopyranosyl-(1!4)-b-d-glucuronopyranosyl] oleanolic acid, 3-O-[a-lrhamnopyranosyl-(1!4)-b-d-glucuronopyranosyl] echinocystic acid, 3-O-[b-d-apiofuranosyl-(1!4)-b-d-glucuronopyranosyl] oleanolic acid 28-O-b-d-glucopyranosyl ester, 3-O-a-l-ramnopyranosyl-(1!4)-[a-l-arabinopyranosyl-(1!2)-] b-d-glucuronopyranosyl oleanolic acid, 3-O-a-l-rhamnopyranosyl-(1!4)-[a-l-arabinopyranosyl-(1!2)-] b-d-glucuronopyranosyl oleanolic acid 28-O-b-d-glucopyranosyl ester, 3-O-a-l-rhamnopyranosyl-(1!4)-[b-d-galactopyranosyl-(1!2)-] b-d-glucuronopyranosyl oleanolic acid, 3-O-a-l-rhamnopyranosyl-(1!4)-[b-d-galactopyranosyl-(1!2)-] b-d-glucuronopyranosyl oleanolic acid 28-O-b-d-glucopyranosyl ester, 3-O-b-d-apiofuranosyl-(1!4)-[a-l-arabinopyranosyl-(1!2)-] b-d-glucuronopyranosyl oleanolic acid and 3-O-b-dapiofuranosyl-(1!4)-[a-l-arabinopyranosyl-(1!2)-] b-d-glucuronopyranosyl oleanolic acid 28-O-b-d-glucopyranosyl ester.

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