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首页> 外文期刊>Archives of Pharmacal Research >Biologically active C-alkylated flavonoids from Dodonaea viscosa
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Biologically active C-alkylated flavonoids from Dodonaea viscosa

机译:十二指肠生物活性C-烷基化类黄酮

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摘要

A new C-alkylated flavonoid (5,7-dihydroxy-3′-(4″-acetoxy-3″-methylbutyl)-3,6,4′-trimethoxyflavone (1), along with two known C-alkylated flavonoids (5,7-dihydroxy-3′-(3-hydroxymethylbutyl)-3,6,4′-trimethoxyflavone (2), 5,7,4′-trihydroxy-3′-(3-hyroxymethylbutyl)-3,6-dimethoxyflavone (3) and two new source C-alkylated flavonoids (5,7-dihydroxy-3′-(2-hydroxy-3-methyl-3-butenyl)-3,6,4′-trimethoxyflavone (4), 5,7,4′-trihydroxy-3,6-dimethoxy-3′-isoprenyl-flavone (5) were isolated from the aerial parts of Dodonaea viscosa. The structures of all compounds were established on the basis of 1D and 2D NMR spectroscopy and mass spectrometry. The isolated compounds were evaluated for their inhibitory effect on urease and α-chymotrypsin enzyme. All the compounds (1–5) exhibited mild inhibition against urease but remained recessive in case of α-chymotrypsin.
机译:一种新的C-烷基化类黄酮(5,7-二羟基-3'-(4“-乙酰氧基-3”-甲基丁基)-3,6,4'-三甲氧基黄酮(1),以及两个已知的C-烷基化类黄酮(5 ,7-二羟基-3'-(3-羟基甲基丁基)-3,6,4'-三甲氧基黄酮(2),5,7,4'-三羟基-3'-(3-羟甲基甲基丁基)-3,6-二甲氧基黄酮( 3)和两个新的C-烷基化黄酮类化合物(5,7-二羟基-3'-(2-羟基-3-甲基-3-丁烯基)-3,6,4'-三甲氧基黄酮(4),5,7,从Dodonaea viscosa的地上部分中分离出4'-三羟基-3,6-二甲氧基-3'-异戊二烯基-黄酮(5),并基于一维和二维核磁共振谱和质谱法确定了所有化合物的结构。对分离出的化合物对脲酶和α-胰凝乳蛋白酶的抑制作用进行了评估,所有化合物(1-5)对脲酶的抑制作用均较轻,但在α-胰凝乳蛋白酶的情况下仍呈隐性。

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