Glycoside compounds from Chrysanthemum indicum and their antioxidant activity
Thirteen glycoside compounds were isolated and purified from 95%ethanol extract of Chrysanthemum indicum by normal and reversed phase silica gels,glucan gel,and high performance liquid chromatography,and their chemical structures were identified by spectroscopic data and physicochemical properties.These compounds were(2S,3R)-2,3-dihydro-3-hydroxymethyl-7-methoxy-2-benzodioxole-5-benzofuranpropanol-10-O-β-D-glucopyranoside(1),4,6,8-decatriynyl-β-D-glucopyranoside(2),5-(β-D-glucopyranosyloxy)-2-hydroxy benzoic acid methyl ester(3),citrusin C(4),cuminyl β-D-glucopyranoside(5),benzyl-6-[(2E)-2-butenoate]-β-D-glucopyranoside(6),benzyl β-D-glucoside(7),viridoside(8),phenylethyl β-D-glucopyranoside(9),syringaresinol-4′-O-β-D-glucoside(10),pinoresinol-4′-O-β-D-glucoside(11),isoeucommin A(12),and eucommin A(13).Among them,compound 1 was a new compound.Compounds 2 and 5 were first isolated from Chrysanthemum.Compounds 3-4,6,8,and 11-13 were isolated from the C.indicum for the first time.Compounds 5 and 8 have potential antioxidant activity.
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