Synthesis and biological evaluation of novel pyrazolo[1,5-a]pyrimidines: Discovery of a selective inhibitor of JAK1 JH2 pseudokinase and VPS34
作者:Justin D. Singleton、Reuben Dass、Nathaniel R. Neubert、Rachel M. Smith、Zak Webber、Marc D.H. Hansen、Matt A. Peterson
DOI:10.1016/j.bmcl.2019.126813
日期:2020.1
A series of novel 3,6-di-substituted or 3-substituted pyrazolo[1,5-a]pyrimidines were prepared via a microwave-assisted approach that generated a broad array of derivatives in good yields (20-93%, ave. = 59%). The straightforward synthesis involved sequential treatment of commercially-available acetonitrile derivatives with DMF-dimethylacetal (120 °C, 20 min), followed by treatment with NH2NH2·HBr
通过微波辅助方法制备了一系列新颖的3,6-二取代或3-取代的吡唑并[1,5-a]嘧啶,该方法以良好的收率(20-93%ave)产生了广泛的衍生物。 = 59%)。简单的合成方法包括依次用DMF-二甲基乙缩醛(120°C,20分钟)处理市售的乙腈衍生物,然后用NH2NH2·HBr(120°C,20分钟)和1,1,3,3-处理四甲氧基丙烷或2-芳基取代的丙二醛(120°C,20分钟)。在体外筛选化合物针对MCF7乳腺癌和/或A2780卵巢癌细胞系的抗有丝分裂活性。活性最高的化合物的EC50值为0.5至4.3μM,