A series of new sorafenib derivatives was designed and synthesized. The antiproliferative activity of the synthesized compounds against human lung cancer cell (A549), human pancreatic cancer cell (PC‐3), human leukemia cell (K562), and human hepatoma cell (SMMC‐7721) was evaluated by MTT assay. The results revealed that several compounds displayed more significant antitumor activities than commercial anticancer agent sorafenib against SMMC‐7721. In addition, compounds 7a , 7g , 7l , 7m , and 7p represented obvious growth inhibition with IC₅₀ values of 1‐9 μM against four cancer cell lines, demonstrating more predominant activities against cancer cells as compared to sorafenib. Furthermore, some structure‐activity relationships have also been established. Compounds containing indole and benzene ring substituted by halogen showed better activity than sorafenib. Wound healing assay suggested that cells would be targeted on their migratory capacity by 7g , potentially affecting the migration activity of these tumors. The effects of A549 and PC‐3 cell apoptosis induced by compound 7g were significantly increased compared with sorafenib. Importantly, the result of western blot assay showed that 7g inhibited cell growth by suppressing the activity of EGFR, especially the expression of p‐EGFR (Tyr1068).

中文翻译：

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含有吲哚（酮）氨基脲类似物作为抗肿瘤剂的索拉非尼衍生物的设计，合成和生物学评估

设计并合成了一系列新的索拉非尼衍生物。通过MTT分析评估了合成化合物对人肺癌细胞（A549），人胰腺癌细胞（PC-3），人白血病细胞（K562）和人肝癌细胞（SMMC-7721）的抗增殖活性。结果表明，几种化合物显示出比市售抗癌药索拉非尼对SMMC-7721更显着的抗肿瘤活性。此外，化合物7a，7g，7l，7m和7p表现出明显的IC ₅₀抑制生长四种癌细胞系的1-9μM值，表明与索拉非尼相比具有更强的抗癌细胞活性。此外，还建立了一些构效关系。含有吲哚和被卤素取代的苯环的化合物显示出比索拉非尼更好的活性。伤口愈合试验表明，细胞的迁移能力将达到7g，这可能会影响这些肿瘤的迁移活性。与索拉非尼相比，化合物7g诱导的A549和PC-3细胞凋亡的作用显着增强。重要的是，蛋白质印迹分析的结果表明7g 通过抑制EGFR的活性，特别是p-EGFR（Tyr1068）的表达来抑制细胞生长。