AbstractA series of thieno[2,3‐d]pyrimidines were designed and synthesized as epidermal growth factor receptor (EGFR) inhibitors. These compounds were tested for their ability to inhibit MCF‐7 and A549 cancer cells. The most active compound, 12c, inhibited the growth of both cell lines, with IC50 values of 15.67 and 12.16 μM, respectively. It was found that 12c had inhibitory effects on both EGFRWT and EGFRT790M isoforms, with inhibitory partialities of 37.50 and 148.90 nM, respectively. Additionally, 12c was found to be safer than erlotinib against normal cell lines (IC50 = 38.61 μM). Compound 12c induced early and late apoptosis in A549 cells and arrested cell growth at G1 and G2/M phases. 12c was also found to increase caspases 3 and 8 ratios. Molecular docking indicated the correct binding modes of the synthesized compounds. MD simulations, MM‐GBSA, and PLIP studies confirmed the precise binding of 12c to the EGFR protein over 100 ns.
摘要 设计并合成了一系列噻吩并[2,3-d]嘧啶类表皮生长因子受体(EGFR)抑制剂。对这些化合物抑制 MCF-7 和 A549 癌细胞的能力进行了测试。活性最强的化合物 12c 可抑制这两种细胞株的生长,其 IC50 值分别为 15.67 和 12.16 μM。研究发现,12c对表皮生长因子受体WT和表皮生长因子受体T790M两种异构体都有抑制作用,抑制偏度分别为37.50和148.90 nM。此外,研究发现 12c 对正常细胞株的抑制作用(IC50 = 38.61 μM)比厄洛替尼更安全。化合物 12c 可诱导 A549 细胞早期和晚期凋亡,并阻止细胞在 G1 和 G2/M 期生长。研究还发现 12c 能提高 caspases 3 和 8 的比例。分子对接表明合成的化合物具有正确的结合模式。MD 模拟、MM-GBSA 和 PLIP 研究证实 12c 与表皮生长因子受体蛋白的结合时间超过 100 ns。