3-(2-氧代-2-取代)乙酰氨基苯甲酰胺类PARP-1抑制剂的设计、合成及活性评价

Design, synthesis and biological evaluation of novel 3-(2-oxo-2-substituted acetamido)benzamides as PARP-1 inhibitors

聚腺苷二磷酸核糖聚合酶-1[poly（ADP-ribose）polymerase-1,PARP-1]能够催化ADP-核糖单元从烟酰胺腺嘌呤二核苷酸（nicotinamide adenine dinucleotide,NAD＋）转移至受体蛋白,参与单链受损DNA的修复,是一种潜在的抗癌药物靶点。本文设计并合成了3-（2-氧代-2-取代）乙酰氨基苯甲酰胺类化合物16个,评价了所有目标化合物对PARP-1酶的抑制活性。其中6个化合物对PARP-1显示出了一定的抑制活性（0.23~5.78μmol·L-1）。初步探讨了该类化合物的构效关系,利用分子对接方法探索了目标化合物与PARP-1的作用模式,为进一步结构改造提供了依据。

Poly（ADP-ribose）polymerase-1 （PARP-1） plays a significant role in the DNA repair process by catalyzing the transfer of ADP-ribose from NAD＋ to its receptors. It is a promising anticancer drug target and many PARP-1 inhibitors have been developed and used in the clinical trial. In this work, a series of 3-（2-oxo-2-substituted acetamido）benzamides have been synthesized and their inhibitory activities against PARP-1 were evaluated. Of all the tested compounds, six compounds displayed inhibitory activities with IC50 values ranging from 0.23 to 5.78 μmol·L-1. The binding pose of compound 5a was predicted using molecular docking to facilitate further structural modification.