modification approach on ABT-263 by merging the piperazinyl-phenyl fragment into a bicyclic framework leading to a series of novel analogues, among which tetrahydroisoquinoline 13 was nearly equally potent against Bcl-2 as ABT-263. Further SAR in the P4-interaction pocket affored the difluoroazetidine substituted analogue 55, which retained good Bcl-2 activity with improved Bcl-2/Bcl-xL selectivity.
在许多肿瘤细胞中过表达的抗凋亡蛋白Bcl-2是潜在的小分子抗癌药物发现的有吸引力的靶标。在这里,我们报告了通过将
哌嗪基-苯基片段合并到一个双环框架中而导致一系列新型类似物的对ABT-263的不同结构修饰方法,其中
四氢异喹啉13对Bcl-2的作用几乎与ABT-263相同。P4相互作用口袋中的进一步
SAR修饰了二
氟氮杂
环丁烷取代的类似物55,该类似物保留了良好的Bcl-2活性,并具有改善的Bcl-2 / Bcl-xL选择性。