Quantitative Structure-Activity Relationship of Catechol Derivatives Inhibiting 5-Lipoxygenase.
作者:Youichiro NAITO、Masanori SUGIURA、Yasunari YAMAURA、Chikara FUKAYA、Kazumasa YOKOYAMA、Yoshiaki NAKAGAWA、Tokuji IKEDA、Mitsugi SENDA、Toshio FUJITA
DOI:10.1248/cpb.39.1736
日期:——
Various catechol derivatives (β-substitued 3, 4-dihydroxystyrenes, 1-substituted 3, 4-dihydroxybenzenes, and 6-substituted 2, 3-dihydroxynaphthalenes) were synthesized and their inhibition of 5-lipoxygenease was assayed. Their structure-activity relationships were examined quantitatively with substituent and structural parameters and regression analysis. The variations in the inhibitory activity were explained in bilinear hydrophobic parameter (log P) terms, and steric (molecular thickness) and electronic (proton nuclear magnetic resonance (1H-NMR) chemical shift of the proton adjacent to the catechol group) parameter terms. The hydrophobicity of the inhibitor molecule was important, and the optimum valur of log P was about 4.3-4.6, beyond which inhibition did not increase further. A lower electron density of the aromatic ring containing the catechol group and the greater thickness of the lipophilic side chains were unfavorable to the activity. The results added a physicochemical basis for the selection of candidate compounds for developmental studies.
合成了多种儿茶酚衍生物(β-取代的3,4-二羟基苯乙烯、1-取代的3,4-二羟基苯和6-取代的2,3-二羟基萘),并测试了它们对5-脂氧合酶的抑制作用。通过取代基和结构参数进行定量结构-活性关系研究,并采用回归分析。抑制活性的变化可以用双线性疏水参数(log P)、空间(分子厚度)和电子(邻近儿茶酚基团的质子的核磁共振氢谱化学位移)参数来解释。抑制剂分子的疏水性很重要,log P的最佳值约为4.3-4.6,超过此值抑制作用不再增加。含有儿茶酚基团的芳环电子密度较低以及亲脂性侧链厚度较大均不利于活性。这些结果为候选化合物的发展研究提供了物理化学基础。