Design, synthesis, and biological evaluation of imidazo[1,2- b ]pyridazine derivatives as mTOR inhibitors
作者:Beibei Mao、Shanyun Gao、Yiran Weng、Liangren Zhang、Lihe Zhang
DOI:10.1016/j.ejmech.2017.02.015
日期:2017.3
the structure-activity relationship of known mTOR inhibitors, a series of novel imidazo[1,2-b]pyridazine derivatives were synthesized and characterized. The anti-proliferative activities of these compounds were evaluated by SRB assay against six human cancer cell lines. Imidazo[1,2-b]pyridazine diaryl urea derivatives A15-A24 exhibited significant anti-proliferative activity especially against non-small
ATP竞争性mTOR抑制剂已被研究为潜在的抗肿瘤药物。基于已知的mTOR抑制剂的构效关系,合成并表征了一系列新型咪唑并[1,2-b]哒嗪衍生物。通过SRB分析评估了这些化合物对六种人类癌细胞系的抗增殖活性。咪唑并[1,2-b]哒嗪二芳基脲衍生物A15-A24表现出显着的抗增殖活性,尤其是针对非小细胞肺癌A549和H460,IC50值为0.02μM至20.7μM。其中,化合物A17和A18表现出mTOR抑制活性,IC50分别为0.067μM和0.062μM。对化合物A17和A18的更详细分析表明,它们在细胞水平上诱导G1期细胞周期停滞并抑制AKT和S6的磷酸化。此外,在已建立的裸鼠A549异种移植模型中观察到了A17在体内的明显抗癌作用。