Hepatoprotective triterpene saponins from the roots of Glycyrrhiza inflata.

Hepatoprotective triterpene saponins from the roots of Glycyrrhiza inflata.
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DOI:
10.3390/molecules20046273
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发表时间:
2015-04-09
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Peng GP
Peng GP
中科院分区:
其他
文献类型:
--
作者:
Zheng YF;Wei JH;Fang SQ;Tang YP;Cheng HB;Wang TL;Li CY;Peng GP

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从胀根甘草的水提物中分得两个新的齐墩果烷型三萜皂苷,即甘草皂苷P2(1)和甘草皂苷Q2(3),以及9个已知化合物2,4-11。通过波谱分析,包括2D-NMR实验(1H-1H COSY,HSQC,HMBC和ROESY),确定了这些化合物的结构。在体外试验中,化合物2-4、6和11通过降低D-半乳糖胺(D-GalN)损伤的原代大鼠肝细胞中的ALT和AST水平而显示出显著的肝保护活性。另外,化合物2-4、6、7和11对磷脂酶A_2活性有抑制作用,其IC_(50)分别为6.9 μM、3.6 μM、16.9 μM、27.1 μM、32.2 μM和9.3 μM,可能与其保肝作用有关。
Two novel oleanane-type triterpene saponins, licorice-saponin P2 (1) and licorice-saponin Q2 (3), together with nine known compounds 2, 4–11, have been isolated from the water extract of the roots of Glycyrrhiza inflata. The structures of these compounds were elucidated on the basis of spectroscopic analysis, including 2D-NMR experiments (1H–1H COSY, HSQC, HMBC and ROESY). In in vitro assays, compounds 2–4, 6 and 11 showed significant hepatoprotective activities by lowering the ALT and AST levels in primary rat hepatocytes injured by D-galactosamine (D-GalN). In addition, compounds 2–4, 6, 7 and 11 were found to inhibit the activity of PLA2 with IC50 values of 6.9 μM, 3.6 μM, 16.9 μM, 27.1 μM, 32.2 μM and 9.3 μM, respectively, which might be involved in the regulation of the hepatoprotective activities observed.
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