Tyrosine Kinase Inhibitors. 14. Structure−Activity Relationships for Methyl- amino-Substituted Derivatives of 4-[(3-Bromophenyl)amino]-6-(methylamino)- pyrido[3,4-<i>d</i>]pyrimidine (PD 158780), a Potent and Specific Inhibitor of the Tyrosine Kinase Activity of Receptors for the EGF Family of Growth Factors
作者:Gordon W. Rewcastle、Donna K. Murray、William L. Elliott、David W. Fry、Curtis T. Howard、James M. Nelson、Billy J. Roberts、Patrick W. Vincent、H. D. Hollis Showalter、R. Thomas Winters、William A. Denny
DOI:10.1021/jm970641d
日期:1998.2.1
The 4-[(3-bromophenyl)amino]pyrido[3,4-d]pyrimidine PD 158780 is a very potent in vitro inhibitor of the tyrosine kinase activity of the epidermal growth factor receptor (EGFR) (IC50 0.08 nM), and other members of the erbB family, by competitive binding at the ATP site of these signal transduction enzymes. A series of analogues of PD 158780 bearing solubilizing functions off the 6-methylamino substituent
4-[(3-溴苯基)氨基]吡啶并[3,4-d]嘧啶PD 158780是一种非常有效的体外抑制剂,可抑制表皮生长因子受体(EGFR)的酪氨酸激酶活性(IC50 0.08 nM),并且erbB家族的其他成员,通过竞争结合这些信号转导酶的ATP位点来实现。通过使6-氟衍生物与适当的胺亲核试剂反应,制备了一系列具有6-甲基氨基取代基的增溶功能的PD 158780的类似物。评估了它们在培养的A431人表皮癌细胞中抑制EGF刺激的全长EGFR酶酪氨酸磷酸化作用的能力以及对EGFR自磷酸化的抑制能力。最有效的类似物是那些通过仲胺键带有弱碱性取代基的类似物,经证实具有水溶性(> 10 mM)和强效(IC50S通常<1 nM)。对于这些化合物,在胺碱强度或阳离子中心与发色团的距离方面尚无明确的SAR,这表明6位取代基在酶结合位点的体积容忍度良好的区域内。由于化合物抑制A431细胞中EGFR自磷酸化的能力,出