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Pharmaceutical Biology 2016-Jul

New flavonoid from Patrinia villosa.

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Zheng Xiang
Ning Chen
Ying Xu
Jian Wu
Ying-Jie Liu
Chong Tan
Yu-Bin Ji
Wen-Lan Li

Ключови думи

Резюме

BACKGROUND

Patrinia villosa (Thunb.) Juss (Valerianaceae) is an important ancient herbal medicine widely used for inflammation, wound healing, and abdominal pain. But little is known of the phytochemical constituents of this herbal plant.

OBJECTIVE

The objective of this study is to isolate and identify the bioactive components from P. villosa.

METHODS

A 70% EtOH extract of P. villosa was subjected to normal-phase silica, ODS silica gel column chromatography, and semi-preparative HPLC chromatography after partitioned successively with light petroleum, dichloromethane and n-BuOH. Chemical structures of the compounds were elucidated by spectroscopic methods including UV, 1D-NMR, 2D-NMR, HR-ESI-MS, and CD spectra. The cytotoxic activity of the new component was determined with the SMMC-7721 cell line using the MTT method after incubation for 48 h.

RESULTS

A new flavonoid named patriniaflavanone A (1) along with four known compounds was isolated from P. villosa. The four known compounds were identified as luteolin 7-O-glucuronide-6″-methyl ester (2), p-hydroxyphenylacetic acid methyl ester (3), trans-caffeic acid (4), and trans-caffeic acid methylate (5) by comparison of their spectral data with the reported data. The IC50 value of patriniaflavanone A (1) on SMMC-7721 was 61.27 μM.

CONCLUSIONS

This is the first report on the isolation and identification of patriniaflavanone A (1), and compounds 2-5 were isolated for the first time from the title plant. Patriniaflavanone A (1) exhibited moderate cytotoxic activity.

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