【摘 要】
：
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
【机 构】
：
Catalysis Institute,Medical College of Wenzhou
论文部分内容阅读
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.
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