Abstract
ABSTRACTMedium pressure liquid chromatography and semipreparative high-performance liquid chromatography, followed by recycling high-performance liquid chromatography, were used for the isolation and purification of oligostilbenes from the acetone extracts of Dipterocarpus semivestitus and Neobalanocarpus heimii. Two stilbene dimers, ε-viniferin and cis-ε-viniferin, and a stilbene trimer, cis-miyabenol C were isolated from D. semivestitus. A trimer, ampelopsin C, and two tetramers, hemsleyanol D and isohopeaphenol, were isolated from N. heimii. The purities of the compounds were determined by an ultrahigh-performance liquid chromatography.
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