Chemical constituents of the aerial parts of Emilia sonchifolia (II) / 中国药学杂志

ABSTRACT

OBJECTIVE: To study the chemical constituents of the aerial parts of Emilia sonchifolia. METHODS: The chemical constituents were isolated and purified by chromatographies on silica gel, MCI gel, ODS, and Sephadex LH - 20 columns, as well as RP-HPLC. And their structures were identified on the basis of physicochemical properties and spectral data. RESULTS: Eighteen compounds were obtained from the aerial parts of E. sonchifolia and identified as isorhamnetin-3-O-α-L-rhamnopyranoside(1), afzelin (2), quercetin-7-O-α-L-rhamnopyranoside(3), 5, 2', 6'-trihydroxy-7-methoxyflavone 2'-O-β-D-glucopyranoside(4), quercetin-3-O- α-L-rhamnopyranoside(5), diosmin(6), isorhamnetin-3-O-rutinoside(7), linarin(8), vitexin(9), quercetin-7-O-β-D-glucopyranoside(10), vicenin-2(11), methyl 4-hydroxybenzeneacetate(12), 3, 4-dihydroxybenzeneacetic acid(13), brevifolin(14), chlorogenic acid(15), methyl chlorogenate(16), pedatisectine E(17), and uridine(18), respectively. CONCLUSION: All compounds are isolated from this genus for the first time except compounds 5 and 11.