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采用硅胶、ODS和葡聚糖凝胶LH-20柱层析方法,从大叶紫珠(马鞭草科)70%乙醇提取物的乙酸乙酯萃取部位得到一个新的苯丙素类衍生物。采用包括电喷雾离子化高分辨质谱和一维、二维核磁共振等多种光谱学手段鉴定该化合物结构为2-甲氧基对苯二酚-4-O-[(5-O-反式-咖啡酰)-β-D-呋喃芹菜糖]-(1→2)-β-D-吡喃葡萄糖苷。
A new phenylpropanoid derivative was obtained from the ethyl acetate extract of 70% ethanol extract of S. auricula (Verbenaceae) using silica gel, ODS and Sephadex LH-20 column chromatography. The structures of the compounds were identified as 2-methoxy hydroquinone-4-O - [(5-O-trans - caffeoyl) -β-D-furan celery sugar] - (1 → 2) -β-D-glucopyranoside.