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Two new compounds from <Emphasis Type="Italic">Phyllanthus niruri</Emphasis>
Authors:Wan-Xing Wei  Yuan-Jiang Pan  Hong Zhang  Cui-Wu lin  Teng-You Wei
Institution:(1) College of Chemistry and Chemical Engineering, Guangxi University, 530004 Nanning, P. R. China;;(2) Department of Chemistry, Zhejiang University, 310027 Hangzhou, P. R. China
Abstract:Three compounds were isolated from Phyllanthus niruri Linn. One effective method, improved dry column liquid chromatography for isolating these compounds, was applied on a silica gel column. It is a combination of conventional dry column chromatographic and flash chromatographic techniques. Structures of those obtained compounds were elucidated by means of spectral techniques including IR, MS, and 1D NMR and 2D NMR. Compound 1 was elucidated as 2,3,5,6-tetrahydroxybenzyl acetate. Compound 2 , 2,4,5-trihydroxy-3-(4,6,7-trihydroxy-3-oxo-1,3-dihydroisobenzofuran-5-yl)-benzoic acid methyl ester, was given the name phyllangin, and compound 3 was named corilagin. Compounds 1 and 2 are new compounds.Published in Khimiya Prirodnykh Soedinenii, No. 5, pp. 380–382, September–October, 2004.
Keywords:Dry column chromatography  Phyllanthus niruriLinn    2  3  5  6-tetrahydroxybenzyl acetate  Phyllangin  Corilagin
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