Sterically induced conformational restriction: Discovery and preclinical evaluation of novel pyrrolo[3,2-d]pyrimidines as microtubule targeting agents
作者:Roheeth Kumar Pavana、Khushbu Shah、Taylor Gentile、Nicholas F. Dybdal-Hargreaves、April L. Risinger、Susan L. Mooberry、Ernest Hamel、Aleem Gangjee
DOI:10.1016/j.bmc.2018.09.025
日期:2018.11
The discovery, synthesis and biological evaluations of a series of nine N5-substituted-pyrrolo[3,2-d]pyrimidin-4-amines are reported. Novel compounds with microtubule depolymerizing activity were identified. Some of these compounds also circumvent clinically relevant drug resistance mechanisms (expression of P-glycoprotein and βIII tubulin). Compounds 4, 5, and 8–13 were one to two-digit nanomolar
报道了一系列九种N5-取代的吡咯并[3,2 - d ]嘧啶-4-胺的发现,合成和生物学评估。鉴定了具有微管解聚活性的新型化合物。这些化合物中的某些还绕开了临床相关的耐药机制(P-糖蛋白和βIII微管蛋白的表达)。化合物4,5,和8 - 13为一到两位数纳摩尔(IC 50)癌症细胞在培养的抑制剂。相反,最近的报道(Banerjee等药物化学杂志。 2018,61,1704年至1718年),最活跃的化合物的构象来确定由11 H NMR和分子模型与先前报道的相似并且与最近报道的X射线晶体结构保持一致。与三种对照相比,在三种异种移植模型[MDA-MB-435,MDA-MB-231和NCI / ADR-RES]中,化合物11以HCl盐的形式自由溶于水,具有统计学上显着的肿瘤生长抑制作用。化合物11没有显示出动物毒性的迹象,目前被计划用于进一步的临床前开发。