Discovery of 4,7-Diamino-5-(4-phenoxyphenyl)-6-methylene-pyrimido[5,4-<i>b</i>]pyrrolizines as Novel Bruton’s Tyrosine Kinase Inhibitors
作者:Yu Xue、Peiran Song、Zilan Song、Aoli Wang、Linjiang Tong、Meiyu Geng、Jian Ding、Qingsong Liu、Liping Sun、Hua Xie、Ao Zhang
DOI:10.1021/acs.jmedchem.8b00441
日期:2018.5.24
An alternative medicinal chemistry approach was conducted on Bruton’s tyrosine kinase (BTK) inhibitor 1 (ibrutinib) by merging the pyrazolo[3,4-d]pyrimidine component into a tricyclic skeleton. Two types of compounds were prepared, and their biochemical activities on BTK as well as stereochemistry effects were determined. Structural optimization focusing on the reactive binding group to BTK Cys481
通过将吡唑并[3,4- d ]嘧啶组分合并成三环骨架,对布鲁顿酪氨酸激酶(BTK)抑制剂1(依鲁替尼)进行了另一种药物化学处理。制备了两种类型的化合物,并确定了它们对BTK的生化活性以及立体化学作用。进行了结构优化,重点是与BTK Cys481的反应性结合基团和以代谢研究为指导的代谢位点。7S被认为是最有效的,对BTK的IC 50值为0.4 nM,对BTK依赖的TMD8细胞的IC 50为16 nM。相比1,7S对B细胞受体信号通路的抑制作用强一些。在源自TMD8细胞的动物异种移植模型中,7S在15 mg / kg QD剂量下显示出5.3的相对肿瘤体积,在25 mg / kg QD较高剂量下比1(RTV 6.6)更有效。所有这些结果表明7S是一种值得进一步分析的新型BTK抑制剂。