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Lipid metabolites with free-radical scavenging activity from Euphorbia helioscopia L.

机译:一品红具有自由基清除作用的脂质代谢产物。

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摘要

The methanolic extract of the plant Euphorbia helioscopia L. exhibited an interesting free-radical scavenging activity. From the aerial parts of Euphorbia helioscopia L. (Euphorbiaceae), a complex mixture of seven cerebro-sides together with glucoclionasterol, a digalactosyldiacylglycerol and a diacylmonogalactosylglycerol were identified. The structures of the cerebrosides were characterized as 1-O-β-D-glucosides of phy-tosphingosines, which comprised (2S, 3S, 4E, 8E)-2-amino-4(E),8(E)-octadecadiene-l,3-diol, (2S, 3S, 4E, 8Z)-2-amino-4(E),8(Z)-octadecadiene-l,3-diol, (2S, 3S, 4R, 8Z)-2-amino-8(Z)-octadecene-l,3,4-triol as long chain bases with seven 2-hydroxy fatty acids of varying chain lengths (C_(16), C_(24:1), C_(26:1), C_(24), C_(26), C_(28:1)) linked to the amino group. The glycosylglycerides were characterized as (2S)-2,3-O-di-(9,12,15-octadecatrienoyl)-glyceryl-6-O-(α-D-galactopyranosyl)-β-D-galactopyranoside and (2S)-2,3-O-di-(9,12,15-octadecatrienoyl)-glyceryl-1-O-β-D-galactopyranoside. The structures were established on the basis of spectroscopic data and chemical reactions.
机译:植物大戟属天芥菜的甲醇提取物表现出有趣的自由基清除活性。从大戟属大戟科的地上部分,鉴定出七种脑侧与葡糖甾醇,二半乳糖基二酰基甘油和二酰基单半乳糖基甘油的复杂混合物。脑苷的结构被表征为phy-tosphingosinesines的1-O-β-D-葡萄糖苷,其中包括(2S,3S,4E,8E)-2-氨基-4(E),8(E)-十八碳二烯- 1,3-二醇,(2S,3S,4E,8Z)-2-氨基-4(E),8(Z)-十八碳二烯-1,3-二醇,(2S,3S,4R,8Z)-2-氨基-8(Z)-十八碳烯-1,3,4-三醇为长链碱基,具有七个不同链长的2-羟基脂肪酸(C_(16),C_(24:1),C_(26:1) ,C_(24),C_(26),C_(28:1))与氨基连接。糖基甘油酯的特征是(2S)-2,3-O-二-(9,12,15-十八碳三烯酰基)-甘油-6-O-(α-D-吡喃半乳糖基)-β-D-吡喃半乳糖苷和(2S) -2,3-O-二-(9,12,15-十八碳三烯酰基)-甘油基-1-O-β-D-吡喃半乳糖苷。根据光谱数据和化学反应建立结构。

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