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首页> 外文期刊>Journal of Zhejiang University. Science, A >A novel long-chain acyl-derivative of epigallocatechin-3-O-gallate prepared and purified from green tea polyphenols
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A novel long-chain acyl-derivative of epigallocatechin-3-O-gallate prepared and purified from green tea polyphenols

机译:制备的EPigallocateChin-3-o-gallate的新型长链酰基衍生物,并从绿茶多酚纯化

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lipophilic tea polyphenols (LTP) were prepared by catalytic esterifica tion of green tea polyphenols (GTP) with hexadecanoyl chloride. A novel long-ch a in acyl-derivative of epigallocatechin-3-o-gallate (EGCG) was first isol ated fro m purification of LTP by high-speed countercurrent chromatography (HSCCC) using a solvent system composed of n-hexane-ethyl acetate-methanol-water (1:1:1:1, v/v). The molecular structure of the acyl-derivative, Epigallocatechin-3-O- gall ate-4'-O-hexadecanate, was elucidated by means of elemental analysis, I R, 1H-NMR and MS spectra.
机译:通过用十六二烷酰氯(GTP)催化Esterifica,通过用十六烷酰氯催化兼己烯醇(GTP)来制备亲脂性茶多酚醇(LTP)。 EpigallocateChin-3-Ha-gallate(EGCG)酰基衍生物中的新型LONG-CH A由使用由正己烷 - 乙基组成的溶剂系统通过高速逆流色谱(HSCCC)来获得LTP的LTP的纯化。乙酸甲酯 - 水(1:1:1:1,v / v)。通过元素分析,I R,1H-NMR和MS光谱,阐明了酰基衍生物的分子结构。

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