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Isolation and purification of prenylated phenolics from Amorpha fruticosa by high-speed counter-current chromatography



Isolation and purification of prenylated phenolics from Amorpha fruticosa by high-speed counter-current chromatography



Journal of Separation Science 38(16): 2924-2929



Prenylated phenolics such as amorfrutins are recently identified potent anti-inflammatory and antidiabetic natural products. In this work, high-speed counter-current chromatography was investigated for the isolation and purification of prenylated phenolics from the fruits of Amorpha fruticosa by using a two-phase solvent system composed of n-hexane/ethanol/water (5:4:1, v/v). As a result, 14.2 mg of 5,7-dihydroxy-8-geranylflavanone, 10.7 mg of amorfrutin A and 17.4 mg of amorfrutin B were obtained from 200 mg of n-hexane-soluble crude extract in one step within 250 min. The purities of 5,7-dihydroxy-8-geranylflavanone, amorfrutins A and B were 95.2, 96.7 and 97.1%, respectively, as determined by ultra high performance liquid chromatography. The structural identification was performed by mass spectrometry and (1) H and (13) C NMR spectroscopy. The results indicated that the established method is an efficient and convenient way to purified prenylated phenolics from A. fruticosa extract.

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Accession: 058175158

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PMID: 26041477

DOI: 10.1002/jssc.201500224


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