HPLC-ESI-MSn Identification and NMR Characterization of Glucosyloxybenzyl 2 R-Benzylmalate Deriva-Tives from Arundina Graminifolia and Their Anti-Liver Fibrotic Effects In Vitro

葛根草中葡萄糖氧苄基2R-苄基苹果酸酯衍生物的HPLC-ESI-MSn鉴别、NMR表征及体外抗肝纤维化作用

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作者:Qingqing Liu, Feiyi Sun, Yulin Deng, Rongji Dai, Fang Lv

Abstract

Four new glucosyloxybenzyl 2R-benzylmalate derivatives, named Arundinoside H (2), I (5), J (6), K (8) as well as four known compounds Arundinoside D (1), G (3), F (4), E (7) were isolated and characterized by a combination of chemical and spectroscopic methods, including HR-ESI-MS, 1D and 2D NMR experiments. Besides, 24 unreported compounds were inferred from ESI-MSn data. The anti-liver fibrotic activities of the isolates were determined as proliferation inhibition of lipopolysaccharide (LPS)-induced activation of rat hepatic stellate cells (HSC-T6). The result suggested Arundinosides D, H, F, I and K showed moderate inhibitory effects in vitro.

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