The Discovery of 7-Methyl-2-[(7-methyl[1,2,4]triazolo[1,5-<i>a</i>]pyridin-6-yl)amino]-9-(tetrahydro-2<i>H</i>-pyran-4-yl)-7,9-dihydro-8<i>H</i>-purin-8-one (AZD7648), a Potent and Selective DNA-Dependent Protein Kinase (DNA-PK) Inhibitor
作者:Frederick W. Goldberg、M. Raymond V. Finlay、Attilla K. T. Ting、David Beattie、Gillian M. Lamont、Charlene Fallan、Gail L. Wrigley、Marianne Schimpl、Martin R. Howard、Beth Williamson、Mercedes Vazquez-Chantada、Derek G. Barratt、Barry R. Davies、Elaine B. Cadogan、Antonio Ramos-Montoya、Emma Dean
DOI:10.1021/acs.jmedchem.9b01684
日期:2020.4.9
DNA-PK is a key component within the DNA damage response, as it is responsible for recognizing and repairing double-strand DNA breaks (DSBs) via non-homologous end joining. Historically it has been challenging to identify inhibitors of the DNA-PK catalytic subunit (DNA-PKcs) with good selectivity versus the structurally related PI3 (lipid) and PI3K-related protein kinases. We screened our corporate collection
DNA-PK是DNA损伤反应中的关键组成部分,因为它通过非同源末端连接负责识别和修复双链DNA断裂(DSB)。从历史上看,与结构相关的PI3(脂质)和PI3K相关的蛋白激酶相比,鉴定具有良好选择性的DNA-PK催化亚基(DNA-PKcs)抑制剂具有挑战性。我们筛选了具有良好PI3激酶选择性的DNA-PKcs抑制剂的企业馆藏,确定了化合物1。优化的重点是进一步提高选择性,同时改善物理和药代动力学特性,尤其是共同优化通透性和代谢稳定性,以鉴定化合物16(AZD7648) 。与PI3Kα/γ脂质激酶相比,化合物16在蛋白激酶组中没有明显的脱靶活性,并且活性较弱。在鼠异种移植模型中观察到了单一疗法的活性,当与DSBs的诱导剂(阿霉素或辐射)或PARP抑制剂(奥拉帕尼)联合使用时,观察到了回归。这些数据支持进入临床研究(NCT03907969)。