STUDIES ON WATER-SOLUBLE CONSTITUENTS OF ECHINACEA PRUPUREA

AIMTo study the water-soluble constituents of Echinacea purpurea. METHODSThe compounds were isolated by chromatography method and their structures were identified on the basis of spectral analyses. RESULTSFive compounds were identified as 2-(4-hydroxylphenyl)-ethyl-O-α-L-rhamnopy-ranoasyl-(1→6)-β-D-glucopyranoside, named echipuroside A 1); (6S,9R)-6-hydroxy-3-one-α-inonol-9-O-β-D-glucopyranoside 2), ampelopsisionoside 3); phenylmethyl-6-O-β-D-xylopyranosyl(1→6)-β-D-glucopyranoside 4) and phyenylmethyl-β-D-glucopyranoside 5). CONCLUSIONCompound 1 is a new compound, the others were isolated from this plant for the first time.