Design, Synthesis, and Evaluation in Vitro of Quinoline-8-carboxamides, a New Class of Poly(adenosine-diphosphate-ribose)polymerase-1 (PARP-1) Inhibitor
作者:Anna-Marie Lord、Mary F. Mahon、Matthew D. Lloyd、Michael D. Threadgill
DOI:10.1021/jm8013629
日期:2009.2.12
prepared by selective Pd-catalyzed couplings at the 2-position of 2,8-dibromoquinoline, followed by lithium−bromine exchange of the intermediate 2-(alkyl/aryl)-8-bromoquinolines and reaction with trimethylsilyl isocyanate. The intramolecular hydrogen bond was confirmed by X-ray and by NMR. The SAR of the 3-substituted compounds for inhibition of human recombinant PARP-1 activity showed a requirement
聚(ADP-核糖)聚合酶-1是药物设计中的重要目标酶。抑制剂具有多种治疗活性。设计了一系列喹啉-8-羧酰胺以通过分子内氢键维持所需的药效团构象。通过Pd催化的偶联(Suzuki,Sonogashira,Stille)与3-碘喹啉-8-羧酰胺合成3-取代的喹啉-8-羧酰胺,这是在最后一步引入多样性的有效方法。通过在2,8-二溴喹啉的2-位进行选择性Pd催化偶联反应,然后通过中间体2-(烷基/芳基)-8-溴喹啉的锂溴交换和反应制备2-取代的喹啉-8-甲酰胺。与异氰酸三甲基甲硅烷基酯。分子内氢键通过X射线和NMR确认。用于抑制人重组PARP-1活性的3-取代化合物的SAR显示需要一个小的狭窄基团。2位取代基增加了效能,最活跃的2-甲基喹啉-8-羧酰胺具有IC50 = 500 nM(5-氨基异喹啉-1-酮(5-AIQ,标准水溶性抑制剂)的IC 50 = 1.8μM)。