Chemical components of Chaenomeles speciosa (Sweet) Nakai

Abstract

Four compounds were isolated from ethyl acetate extract of the dried fruits of Chaenomeles speciosa(Sweet) Nakai,and their structures were identified with spectral methods(MS,1H NMR,and 13C NMR) as hydroquinone(1),3,4-dihydroxybenzoic acid(2),quercetin(3),and methyl 3-hydroxylbutanedioic ester(4).Compounds(1～3) exhibited antioxidant effects in 2,2′-diphenyl-1-picrylhydrazyl(DPPH) radical scavenging assay.Compounds 1～4 were obtained from this plant for the first time.