Design, Synthesis, and Biological Evaluation of Novel Conformationally Constrained Inhibitors Targeting Epidermal Growth Factor Receptor Threonine<sup>790</sup> → Methionine<sup>790</sup> Mutant
作者:Shaohua Chang、Lianwen Zhang、Shilin Xu、Jinfeng Luo、Xiaoyun Lu、Zhang Zhang、Tianfeng Xu、Yingxue Liu、Zhengchao Tu、Yong Xu、Xiaomei Ren、Meiyu Geng、Jian Ding、Duanqing Pei、Ke Ding
DOI:10.1021/jm201591k
日期:2012.3.22
EGFRT790M mutant contributes approximately 50% to clinically acquired resistance against gefitinib or erlotinib. However, almost all the single agent clinical trials of the second generation irreversible EGFR inhibitors appear inadequate to overcome the EGFRT790M-related resistance. We have designed and synthesized a series of 2-oxo-3,4-dihydropyrimido[4,5-d]pyrimidinyl derivatives as novel EGFR inhibitors
EGFR T790M突变体在临床上获得了对吉非替尼或厄洛替尼的耐药性,约占50%。但是,几乎所有第二代不可逆EGFR抑制剂的单药临床试验都不足以克服EGFR T790M相关的耐药性。我们已经设计并合成了一系列2-oxo-3,4-dihydropyrimido [4,5- d ]嘧啶基衍生物作为新型EGFR抑制剂。最有效的化合物2q和2s抑制野生型和突变的EGFR的酶活性,IC 50值在亚纳摩尔范围内,包括T790M突变体。该化合物的激酶抑制效率通过具有EGFR不同突变体的癌细胞中EGFR的活化和下游信号转导的Western印迹分析进一步证实。这些化合物还强烈抑制了带有EGFR L858R / T790M的H1975非小细胞肺癌细胞的增殖,同时对正常细胞的毒性明显降低。此外,在人类NSCLC(H1975)异种移植裸鼠模型中,2s显示出有希望的抗癌功效。