Inhibitory activities and inhibition specificities of caffeic acid derivatives and related compounds toward 5-lipoxygenase.
作者:Masanori SUGIURA、Youichiro NAITO、Yasunari YAMAURA、Chikara FUKAYA、Kazumasa YOKOYAMA
DOI:10.1248/cpb.37.1039
日期:——
Various caffeic acid derivatives were synthesized, and their effects on 5-lipoxygenase (5-LO), 12-lipoxygenase (12-LO) and prostaglandin (PG) synthase activities were investigated. Among them, caffeic acid octyl amide (5) and 1-(3, 4-dihydroxyphenyl)-1-octen-3-one (11) showed very potent inhibitory activities toward 5-LO with IC50 values of 4.2×10-8 and 3.5×10-8 M, respectively. They were very selective inhibitors for 5-LO. Compound 11 showed noncompetitive inhibition, and the two adjacent hydroxy groups attached to the benzene ring, as well as the hydrophobic alkyl side chain, were required for its strong binding to 5-LO.
合成了多种咖啡酸衍生物,并研究了它们对5-脂氧合酶(5-LO)、12-脂氧合酶(12-LO)和前列腺素(PG)合成酶活性的影响。其中,咖啡酸辛酰胺(5)和1-(3, 4-二羟基苯基)-1-辛烯-3-酮(11)对5-LO显示出非常强的抑制活性,IC50值分别为4.2×10-8 M和3.5×10-8 M。它们是非常选择性的5-LO抑制剂。化合物11表现出非竞争性抑制作用,苯环上的两个相邻羟基以及疏水性的烷基侧链对其与5-LO的强结合是必需的。