Under the guidance of anti-fungal bioassay, four previously undescribed oleanane-type and one lupane-type triterpenoid saponins, along with twelve known analogues, were isolated from the extract of Sapindus mukorossi pulps. Their structures were determined on the basis of spectroscopic analysis and chemical methods. In vitro biotests, oleanolic acid 3-O-β-D-xylopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)-α-L-arabinopyranoside showed inhibitory activity against Trichophyton rubrum with MIC80 value of 8 μg/mL, while oleanolic acid 3-O-α-L-arabinopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)-α-L-arabinopyranoside exhibited inhibitory activity against both Trichophyton rubrum and Candida albicans with MIC80 values of 8 μg/mL.

中文翻译：

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无患子果肉中的三萜皂苷及其抗真菌活性

在抗真菌生物测定的指导下，从无患子果肉的提取物中分离出四种以前未描述的齐墩果烷型和一种羽扇豆烷型三萜皂苷，以及十二种已知的类似物。它们的结构是在光谱分析和化学方法的基础上确定的。在体外生物测试中，齐墩果酸 3-O-β-D-吡喃木糖基-(1 → 3)-α-L-吡喃鼠李糖基-(1 → 2)-α-L-阿拉伯吡喃糖苷对红色毛癣菌具有抑制活性，MIC80 值为 8 μg/mL，而齐墩果酸 3-O-α-L-arabinopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)-α-L-arabinopyranoside 对红色毛癣菌和白色念珠菌均表现出抑制活性MIC80 值为 8 μg/mL。