Novel acetylated triterpenoid saponins in a chromatographic fraction from Quillaja saponaria Molina

摘要

Six novel fucose 3-O-acetylated saponisn,with a quillaic acid aglycone,were isolated from a bark extract from the Quillaja saponaria Molina tree.In addition,a saponina wiht a novel aglycone (phytolaccgenic acid) and a novel fatty acyl group [(S)-2-methylbutanoly] for Quillaja saponisns was found.The compounds were characterised using NMR spectroscopy,mass spectrometry and chemical methods.