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从水杨梅根中分得3个成分，经光谱和化学方法鉴定为；quinovicacid3β-O-β-D-fucopy-ranosyl－（28→1）β-D－glucopyranosylester（Ⅰ），quinovicacid3β－O－α－L－rhamnopyranosyl－（28→1）-β-D-glucopyranosylester（Ⅱ）和quinovicacid3β-O-β-D-glucopyranosyl（1→2）-β-D-glucopyra-noside（Ⅲ）。
Three components were extracted from the roots of Salicina, identified by spectroscopic and chemical methods; quinovicacid3β-O-β-D-fucopy-ranosyl-(28→1)β-D-glucopyranosylester (I), quinovicacid3β-O-α -L-rhamnopyranosyl-(28→1)-β-D-glucopyranosylester(II) and quinovicacid3β-O-β-D-glucopyranosyl(1→2)-β-D-glucopyra-noside(III).