Azetidine-2,4-diones (4-Oxo-β-lactams) as Scaffolds for Designing Elastase Inhibitors
作者:Jalmira Mulchande、Rita C. Guedes、Wing-Yin Tsang、Michael I. Page、Rui Moreira、Jim Iley
DOI:10.1021/jm701257h
日期:2008.3.1
N-(4-aryl) position in 3,3-diethyl- N-aryl derivatives increasing the rate of enzyme acylation and generating a Hammett rho-value of 0.65. Compared with a rho-value of 0.96 for the rates of alkaline hydrolysis of the same series, this is indicative of an earlier transition state for the enzyme-catalyzed reaction. Docking studies indicate favorable noncovalent interactions of the inhibitor with the enzyme
新型抑制剂4-氧代-β-内酰胺(氮杂环丁烷-2,4-二酮)含有分子识别所需的结构元素,可抑制猪胰弹性蛋白酶(PPE),但与类似物相比,其对氢氧化物的反应性大大降低抑制剂3-氧代-β-杜鹃花。抑制作用是3,3-二乙基-N-芳基衍生物的N-(4-芳基)活性位点丝氨酸和吸电子取代基被酰化的结果,增加了酶酰化的速率并产生了Hammett的Rh值0.65。与相同系列碱性水解速率的rho值0.96相比,这表明酶催化反应的过渡态更早。对接研究表明抑制剂与酶之间有利的非共价相互作用。化合物2i