Isolation and structural identification of phenylethanoid glycosides from Corallodiscus flabellata

AimTo study the chemical constituents from Corallodiscus flabellata. MethodsThe compounds were isolated and purified by macroporous adsorption resin, silica gel column chromatography and identified on the basis of their physiochemical and spectral data. ResultsThree phenylethanoid glycosides (I-III) were obtained from the n-BuOH fraction of water-extracts. Their structures were elucidated as 3,4-dihydroxyphenylethanol-8-O-［β-D-apiofuranosyl (1→3)］-β-D-glucopyranoside (I), 3,4-dihydroxyphenylethanol-8-O-［4-O-trans-caffeoyl-β-D-apiofuranosyl(1→3)-β-D-glucopyranosyl-(1→6)］-β-D-glucopyranoside (II) and 3,4-dihydroxyphenylethanol-8-O-［β-D-apiofuranosyl(1→3)-β-D-glucopyranosyl-(1→6)］-β-D-glucopyranoside (III). ConclusionCompounds I, II and III are new compounds.