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Cycloartane triterpenoid saponins from the roots of Astragalus ernestii
来源:本地   作者:肖朝江   发布时间:2021-07-09 22:22   点击次数:
 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,6α,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).

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