Pyrido[2,3-<i>d</i>]pyrimidin-7-ones as Specific Inhibitors of Cyclin-Dependent Kinase 4
作者:Scott N. VanderWel、Patricia J. Harvey、Dennis J. McNamara、Joseph T. Repine、Paul R. Keller、John Quin、R. John Booth、William L. Elliott、Ellen M. Dobrusin、David W. Fry、Peter L. Toogood
DOI:10.1021/jm049355+
日期:2005.4.1
Inhibition of the cell cycle kinase, cyclin-dependent kinase-4 (Cdk4), is expected to provide an effective method for the treatment of proliferative diseases such as cancer. The pyrido[2,3-d]pyrimidin-7-one template has been identified previously as a privileged structure for the inhibition of ATP-dependent kinases, and good potency against Cdks has been reported for representative examples. Obtaining
预期细胞周期激酶,细胞周期蛋白依赖性激酶4(Cdk4)的抑制将为治疗增生性疾病(例如癌症)提供有效的方法。以前已经鉴定了吡啶并[2,3-d]嘧啶-7-模板作为抑制ATP依赖性激酶的优先结构,并且已经报道了代表性实例对Cdks的良好效力。获得对单个Cdk酶,特别是Cdk4的选择性一直具有挑战性。在这里,我们报道在吡啶基[2,3-d]嘧啶-7-一个模板的C-5位置处引入甲基取代基足以赋予Cdk4相对于其他Cdks和代表性酪氨酸激酶优异的选择性。进一步的优化导致鉴定出在体外对人肿瘤细胞表现出有效抗增殖活性的高效Cdk4抑制剂。评估了选择性最强的Cdk4抑制剂对小鼠中MDA-MB-435人乳腺癌异种移植物的抗肿瘤活性。