Tyrosine Kinase Inhibitors. 13. Structure−Activity Relationships for Soluble 7-Substituted 4-[(3-Bromophenyl)amino]pyrido[4,3-<i>d</i>]pyrimidines Designed as Inhibitors of the Tyrosine Kinase Activity of the Epidermal Growth Factor Receptor
作者:Andrew M. Thompson、Donna K. Murray、William L. Elliott、David W. Fry、James A. Nelson、H. D. Hollis Showalter、Bill J. Roberts、Patrick W. Vincent、William A. Denny
DOI:10.1021/jm970366v
日期:1997.11.1
receptor (EGFR), via competitive binding at the ATP site of the enzyme, but many of the early analogues had poor aqueous solubility (<< 1 mM). A series of 7-substituted 4-[(3-bromophenyl)-amino]pyrido[4,3-d]pyrimidines, together with selected (3-methylphenyl)amino analogues, were prepared by reaction of the analogous 7-fluoro derivatives with appropriate amine nucleophiles in 2-BuOH or aqueous 1-PrOH. All
4-(苯基氨基)喹唑啉的一般类别是有效的(某些成员的IC50值<< 1 nM),并且是通过在表皮生长因子受体(EGFR)上的竞争性结合而选择性抑制表皮生长因子受体(EGFR)酪氨酸激酶活性的抑制剂。酶,但许多早期类似物的水溶性差(<< 1 mM)。通过将类似的7-氟衍生物与在2-BuOH或1-PrOH水溶液中的合适的胺亲核试剂。评价所有化合物抑制EGF刺激的全长EGFR酶的酪氨酸磷酸化作用的能力。还评估了选定的类似物在培养的A431人表皮样癌细胞中对EGF受体自身磷酸化的抑制作用,以及对小鼠中A431肿瘤异种移植物的抑制作用。带有多种多元醇,阳离子和阴离子可溶取代基的类似物保留了活性,但就增加的水溶性(> 40 mM)和保留总体抑制活性(针对分离的酶的IC50为0.5-10 nM)而言最有效。在A431细胞中抑制EGFR自磷酸化的8-40 nM是弱碱性胺衍生物。这些结果与这些化合物与EGF