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Damarane-type Saponins from Gynostemma longipes and their Cytotoxic Activity

机译:绞股蓝的达玛烷型皂苷及其细胞毒活性

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摘要

Two new damarane-type saponins, named gylongiposides II-III (1 and 2), along with one known compound, (23S)-3 beta,20 xi,21 xi-trihydroxy-19-oxo-21,23-epoxydammar-24-ene 3-O-alpha-t-rhainnopyranosyl-(1 -> 2)-[beta-D-xylopyranosyl-(1 -> 3)]-alpha-t-arabinopyranoside, were isolated from the leaves of Gynostemma longipes C.Y.Wu. Their structures were determined by 1D- and 2D-NMR and HR-ESI-MS spectra. Compounds 1-3 exhibited moderate activity against four human cancer cell lines, A-549, HT-29, OVCAR, and MCF-7, with IC50 values ranging from 9.8 +/- 2.1 to 49.6 +/- 2.6 mu M.
机译:两种新的达玛烷型皂苷,名为gylongiposides II-III(1和2),以及一种已知的化合物(23S)-3 beta,20 xi,21 xi-trihydroxy-19-oxo-21,23-epoxydammar-24从长绞股蓝CYWu的叶子中分离出-ene3-O-α-t-鼠李糖基吡喃糖基-(1-> 2)-[β-D-木吡喃糖基-(1-> 3)]-α-t-阿拉伯吡喃糖苷。它们的结构是通过1D和2D-NMR和HR-ESI-MS光谱确定的。化合物1-3对四种人类癌细胞系A-549,HT-29,OVCAR和MCF-7表现出中等活性,IC50值范围为9.8 +/- 2.1至49.6 +/- 2.6μM。

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