Synthesis, activity, metabolic stability and cell permeability of new cytosolic phospholipase A2α inhibitors with 1-indolyl-3-phenoxypropan-2-one structure
作者:Angelina Subeska、Merlin Ekodo Voundi、Walburga Hanekamp、Dennis Mulac、Klaus Langer、Matthias Lehr
DOI:10.1016/j.bmcl.2023.129374
日期:2023.8
and glucuronosyltransferases, respectively. Here we show that the metabolic stability of these inhibitors can be improved by introducing alkyl substituents in the vicinity of the ketone group or by increasing their rigidity. Furthermore, permeability tests with Caco-2 cells revealed that the indole derivatives have only low permeability, which can be attributed to their affinity to efflux transporters
胞浆磷脂酶 A 2 α (cPLA 2 α) 是花生四烯酸级联的关键酶,被认为是开发新型抗炎药物的一个有趣的靶点。该酶的有效抑制剂包括在吲哚位置 1 具有丙二酮残基的吲哚 5 羧酸。此前,人们发现这些化合物的中心药效基团是它们的酮基和羧酸基,不幸的是,它们分别受到羰基还原酶和葡萄糖醛酸基转移酶的显着代谢。在这里,我们表明,可以通过在酮基附近引入烷基取代基或通过增加其刚性来改善这些抑制剂的代谢稳定性。此外,Caco-2 细胞的渗透性测试表明,吲哚衍生物仅具有较低的渗透性,这可归因于它们与外排转运蛋白的亲和力。其中,分子中心的极性酮基似乎是其反向运输的决定性因素。去除后,渗透性显着增加。通过进行的结构变化实现的代谢稳定性和渗透性的增强伴随着化合物对cPLA 2α的抑制效力或多或少显着的降低。