4-Oxo-β-lactams (Azetidine-2,4-diones) Are Potent and Selective Inhibitors of Human Leukocyte Elastase
作者:Jalmira Mulchande、Rudi Oliveira、Marta Carrasco、Luís Gouveia、Rita C. Guedes、Jim Iley、Rui Moreira
DOI:10.1021/jm901082k
日期:2010.1.14
sensitive to the nature of C-3 substituents, with small alkyl substituents such as a gem-diethyl group improving the inhibitory potency when compared to gem-methyl benzyl or ethyl benzyl counterparts. 4-Oxo-β-lactams containing a heteroarylthiomethyl group on the para position of an N1-aryl moiety afforded highly potent and selective inhibition of HLE, even at a very low inhibitor to enzyme ratio, as shown
人白细胞弹性蛋白酶(HLE)是一种在中性粒细胞中存储和分泌的丝氨酸蛋白酶,在几种肺部疾病的发病机理中起决定性作用。以前被报道作为猪胰弹性蛋白酶的酰化剂的4-氧代-β-内酰胺被发现是选择性和有效的HLE抑制剂。结构活性关系分析表明,抑制活性对C-3取代基的性质非常敏感,与宝石甲基苄基或乙基苄基对应物相比,较小的烷基取代基(如宝石二乙基)提高了抑制效能。在N 1的对位含有杂芳基硫甲基的4-Oxo-β-内酰胺芳基部分,得到高度有效的和HLE的选择性抑制,甚至在非常低的抑制剂的酶比率,如由ķ上的3.24×10值6中号-1小号-1为1207米。相应的邻位异构体的效力降低了40到90倍。