Synthesis, biological evaluation, and molecular modelling studies of potent human neutrophil elastase (HNE) inhibitors
作者:Maria Paola Giovannoni、Igor A. Schepetkin、Mark T. Quinn、Niccolò Cantini、Letizia Crocetti、Gabriella Guerrini、Antonella Iacovone、Paola Paoli、Patrizia Rossi、Gianluca Bartolucci、Marta Menicatti、Claudia Vergelli
DOI:10.1080/14756366.2018.1480615
日期:2018.1.1
both competitive HNE inhibitors. Molecular modelling on 7d and 8d suggests for the latter a more crowded region about the site of the nucleophilic attack, which could explain its lowered activity. In addition molecular dynamics (MD) simulations showed that the isomer 8d appears more prone to form H-bond interactions which, however, keep the reactive sites quite distant for the attack by Ser195. By contrast
我们报告了一系列新的3-或4-(取代)苯基异恶唑酮作为HNE抑制剂的合成和生物学评估。由于异恶唑酮核的互变异构现象,最终的化合物(2-NCO和5-OCO)得到了两个异构体,并且2-NCO衍生物的IC50值在纳摩尔范围内(20-70 nM)最为有效。动力学实验表明2-NCO 7d和5-OCO 8d都是竞争性HNE抑制剂。在7d和8d上进行分子建模,对于后者而言,在亲核攻击位点附近区域更为拥挤,这可以解释其活性降低的原因。此外,分子动力学(MD)模拟表明,异构体8d似乎更易于形成H键相互作用,但是,对于Ser195的攻击,其反应位点相距很远。