[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.