Novel potent substituted 4-amino-2-thiopyrimidines as dual VEGFR-2 and BRAF kinase inhibitors
作者:Heba T. Abdel-Mohsen、Mohamed A. Omar、Ahmed M. El Kerdawy、Abeer E.E. Mahmoud、Mamdouh M. Ali、Hoda I. El Diwani
DOI:10.1016/j.ejmech.2019.06.063
日期:2019.10
nes as antiangiogenic and antiproliferative agents. Structural hybridization between 4-substituted aminopyrimidines (VEGFR-2 inhibitors) and 2-thioxopyrimidines (BRAF inhibitors) was carried out to afford substituted 4-amino-2-thiopyrimidines as type II dual VEGFR-2/BRAF inhibitors. Our design strategy was tailored such that the 4-amino-2-thiopyrimidine scaffold is to be accommodated in the central
在本研究中,我们报告了一种新型的取代的4-氨基-2-硫代嘧啶类药物作为抗血管生成和抗增殖剂的发现。进行4-取代的氨基嘧啶(VEGFR-2抑制剂)和2-硫代嘧啶(BRAF抑制剂)之间的结构杂交,得到取代的4-氨基-2-硫代嘧啶,作为II型双重VEGFR-2 / BRAF抑制剂。我们的设计策略是经过量身定制的,以便将4-氨基-2-硫代嘧啶骨架容纳在两种酶无活性DFG-out构象的中央门区域中。一方面,4-氨基上的疏水取代基将占据疏水的后口袋,而另一方面,硫化物部分上的取代基应延伸以适合铰链区(前口袋)。分子对接模拟证实了所设计化合物在VEGFR-2和BRAF活性位点完成关键相互作用的能力。大多数合成的取代的4-氨基-2-硫代嘧啶在亚微摩尔浓度下均表现出有效的VEGFR-2抑制活性。化合物图8a,图8D,图9C和9E显示IC 50 相比,索拉非尼= 0.17,0.12,0.17和0.19μM,分别针对VEGFR-2(我)IC