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[Study on lignans of Polygonum capitatum].

Huanxin Zhao, Hong Bai, Wei Li, Yuanshu Wang

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Abstract

OBJECTIVE: To study the lignan of Polygonum capitatum. METHODS: The compounds were isolated and purified by using of SiO2, Sephadex LH-20 column chromatography and pre-HPLC. The structures of the compounds were determined on the basis of their physical properties and the spectral data. RESULTS: Four compounds were isolated and identified as schizandriside (1), (-)-isolariciresinol-2a-O-beta-D-xylopyranoside (2), (-) -5 '-methoxyisolariciresinol-2a-O-beta-D-xylopyranoside (3) and nudiposide (4). CONCLUSION: Compounds 1 - 4 are isolated from the genus for the first time.

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What this paper is about

OBJECTIVE: To study the lignan of Polygonum capitatum. METHODS: The compounds were isolated and purified by using of SiO2, Sephadex LH-20 column chromatography and pre-HPLC. The structures of the compounds were determined on the basis of their physical properties and the spectral data. RESULTS: Four compounds were isolated and identified as schizandriside (1), (-)-isolariciresinol-2a-O-beta-D-xylopyranoside (2), (-) -5 '-methoxyisolariciresinol-2a-O-beta-D-xylopyranoside (3) and nudiposide (4). CONCLUSION: Compounds 1 - 4 are isolated from the genus for the first time.

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Available abstract

OBJECTIVE: To study the lignan of Polygonum capitatum. METHODS: The compounds were isolated and purified by using of SiO2, Sephadex LH-20 column chromatography and pre-HPLC. The structures of the compounds were determined on the basis of their physical properties and the spectral data. RESULTS: Four compounds were isolated and identified as schizandriside (1), (-)-isolariciresinol-2a-O-beta-D-xylopyranoside (2), (-) -5 '-methoxyisolariciresinol-2a-O-beta-D-xylopyranoside (3) and nudiposide (4). CONCLUSION: Compounds 1 - 4 are isolated from the genus for the first time.

Key concepts: Lignan, Polygonum, Sephadex, Chemistry, Chromatography, High-performance liquid chromatography, Column chromatography, Stereochemistry

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