A fluorine scan of non-peptidic inhibitors of neprilysin: Fluorophobic and fluorophilic regions in an enzyme active site
作者:Martin Morgenthaler、Johannes D. Aebi、Fiona Grüninger、Daniel Mona、Björn Wagner、Manfred Kansy、François Diederich
DOI:10.1016/j.jfluchem.2008.02.004
日期:2008.9
close contacts of organic fluorine with the negatively polarized π-surfaces of surrounding aromatic amino acid side chains. In contrast, the protein environment around the benzimidazole platform, with three electropositive guanidinium side chains of Arg residues, was found to provide a fluorophilic environment. Overall, the data support that organic fluorine, with its high negative charge density prefers
本文介绍了合成方法和体外(聚)氟化中性溶酶抑制剂的生物亲和力。研究了两个系列的配体中心苯并咪唑平台的F取代抑制剂和填充NEP S1'口袋的苄基载体。S1'口袋被发现具有高度的疏水性,F取代导致抑制剂的结合亲和力大大降低。该结果由有机氟在静电上不利地与周围的芳香族氨基酸侧链的负极化π表面紧密接触来解释。相反,发现苯并咪唑平台周围的蛋白质环境具有Arg残基的三个正电胍基侧链,提供了亲氟环境。总体而言,数据支持有机氟,具有高负电荷密度的电子更倾向于定向到受体位点的正电区域。p氟化配体的K a测量为预测苯并咪唑的p K a值提供了几种简单的模式,苯并咪唑是药物化学中的重要组成部分。