Trisubstituted Imidazoles with a Rigidized Hinge Binding Motif Act As Single Digit nM Inhibitors of Clinically Relevant EGFR L858R/T790M and L858R/T790M/C797S Mutants: An Example of Target Hopping
作者:Michael Juchum、Marcel Günther、Eva Döring、Adrian Sievers-Engler、Michael Lämmerhofer、Stefan Laufer
DOI:10.1021/acs.jmedchem.7b00178
日期:2017.6.8
recently detected triple mutation compromises the activity of the gold standard third-generation EGFR inhibitors. We have prepared a set of trisubstituted imidazoles with a rigidized 7-azaindole hinge binding motif as a new structural class of EGFR inhibitors by a target hopping approach from p38α MAPK inhibitor templates. On the basis of an iterative approach of docking, compound preparation, biological
非小细胞肺癌肿瘤的高基因组不稳定性导致对有前途的EGFR酪氨酸激酶抑制剂(TKIs)的耐药性迅速发展。最近检测到的三重突变损害了金标准的第三代EGFR抑制剂的活性。我们通过p38αMAPK抑制剂模板的靶标跳跃方法制备了一组具有刚性7-氮杂吲哚铰链结合基序的三取代咪唑,作为EGFR抑制剂的新结构类。在对接,化合物制备,生物学测试和SAR解释的迭代方法的基础上,建立了稳健而灵活的合成路线。结果,我们报告了两种可逆抑制剂11d和11e具有临床挑战性的三重突变体L858R / T790M / C797S的IC 50值在低纳摩尔范围内。此外,我们开发了一种激酶组选择性的不可逆抑制剂45A具有IC 50为1nM的针对EGFR L858R / T790M双突变体的值。包括靶结合动力学和代谢稳定性数据。这些有效的突变EGFR抑制剂可作为开发结构新颖的EGFR探针,工具或候选物的基础。