Selectivity switch between FAK and Pyk2: Macrocyclization of FAK inhibitors improves Pyk2 potency
摘要:
Herein, we describe the synthesis of Pyk2 inhibitors via macrocyclization of FAR and dual Pyk2-FAK inhibitors. We identified macrocycle 25a as a highly potent Pyk2 inhibitor (IC50 = 0.7 nM), with similar to 175-fold improvement in Pyk2 potency as compared to its acyclic counterpart. In many cases, macrocyclization improved Pyk2 potency while weakening FAK potency, thereby improving the Pyk2/FAIC selectivity ratio for this structural class of inhibitors. Various macrocyclic linkers were studied in an attempt to optimize Pyk2 selectivity. We observed macrocyclic atropisomerism during the synthesis of 19-membered macro cycles 10a-d, and successfully obtained crystallographic evidence of one atropisomer (10a-AtropB) preferentially bound to Pyk2. (C) 2016 Elsevier Ltd. All rights reserved.
杂环化中的分子内N-芳基化:新型吡啶基稠合的吡咯并[1,2- a ] [1,4]二氮杂pin酮的合成
摘要:
将1-脯氨酰胺与3-(氯甲基)-2-卤代吡啶烷基化,然后通过分子内Pd催化的酰胺化反应进行环化,从而提供了吡啶并[2,3- e ]吡咯并[1,2- a ] [1 ,4] diazepin-10-1支架。此外,通过用Boc-1-脯氨酸对连续取代的(氨甲基)卤代吡啶进行酰化,然后再用Boc-1-脯氨酸进行酰化反应,从而开发了一条合成途径,用于合成各种新的吡啶并[ f ]吡咯并[1,2- a ] [1,4]二氮杂-7-酮。分子内胺化。