Abstract A systematic study on chemical constituents of the roots of Astragalus ernestii was performed by silica gel, sephadex LH-20, MCI gel and Rp-18 column chromatography and spectral analysis such as MS, 1D and 2D NMR. As a result, nine cycloartane triterpenoid saponins were obtained from the methanol extract including a new compound asernestioside D (1), along with eight known constituents, 3-O-β-d-xylopyranosyl-3β,6a,16β,20(S),24(R),25-hexahydroxycycloartane (2), cycloasgenin C-3-O-β-d-xylopyranoside (3), cycloascidoside (4), cyclosiversigenin-3-O-β-d-xylopyranoside (5), isoastragaloside IV (6), asernestioside A (7), asernestioside B (8), and asernestioside C (9).

中文翻译：

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黄芪根中的环阿烷三萜皂苷

摘要 采用硅胶、葡聚糖凝胶LH-20、MCI凝胶和Rp-18柱色谱和质谱、一维、二维核磁共振等光谱分析方法对黄芪根的化学成分进行了系统研究。结果，从甲醇提取物中获得了九种环阿坦三萜皂苷，包括一种新化合物天冬氨酸苷 D (1)，以及八种已知成分，3-O-β-d-吡喃木糖基-3β,6a,16β,20(S) ,24(R),25-hexahydroxycycloartane (2), cycloasgenin C-3-O-β-d-xylopyranoside (3), cycloascidoside (4), cyclosiversigenin-3-O-β-d-xylopyranoside (5),isoastragaloside IV (6)、asernestioside A (7)、asernestioside B (8) 和 asernestioside C (9)。