Tyrosine Kinase Inhibitors. 9. Synthesis and Evaluation of Fused Tricyclic Quinazoline Analogues as ATP Site Inhibitors of the Tyrosine Kinase Activity of the Epidermal Growth Factor Receptor
作者:Gordon W. Rewcastle、Brian D. Palmer、Alexander J. Bridges、H. D. Hollis Showalter、Li Sun、James Nelson、Amy McMichael、Alan J. Kraker、David W. Fry、William A. Denny
DOI:10.1021/jm950692f
日期:1996.1.1
4-[(3-bromophenyl)amino]-6,7-dimethoxyquinazoline (4; PD 153035) as an extremely potent (IC(50) 0.025 nM) inhibitor of the tyrosine kinase activity of the epidermal growth factor receptor (EGFR), several fused tricyclic quinazoline analogues have been prepared and evaluated for their ability to inhibit the enzyme. The most potent compound was the linear imidazo[4,5-g]quinazoline (8), which exhibited an IC(50) of 0
发现4-[((3-溴苯基)氨基] -6,7-二甲氧基喹唑啉(4; PD 153035)作为表皮生长因子受体酪氨酸激酶活性的极强抑制剂(IC(50)0.025 nM) (EGFR),已经制备了几种稠合的三环喹唑啉类似物,并对其抑制酶的能力进行了评估。最有效的化合物是线性咪唑并[4,5-g]喹唑啉(8),其IC(50)为0.008 nM,可抑制磷脂酶C-gamma-1片段作为底物的磷酸化。虽然8的N-甲基类似物显示出相似的效价,但类似的N- [2-(二甲基氨基)乙基]衍生物效果较差。接下来最有效的化合物是线性吡唑并喹唑啉(19和20)(IC(50)s为0.34和0.44 nM)和吡咯并喹唑啉(21)(IC(50)为0.44nM),而其他几个几何形状类似于8的线性三环系统(三唑并,噻唑并和吡嗪并喹唑啉)的效果则较差。在咪唑并[4,5-g]喹唑啉和吡咯并喹唑啉系列中,相应的角型异构体的效力也远低于