Synthesis, characterization, and biological evaluation of new quinazolin-4-one derivatives hybridized with pyridine or pyran moiety
作者:Marwa F. Ahmed、Amany Belal
DOI:10.1007/s11164-015-2048-8
日期:2016.2
A new series of 2-(furan-2-yl)-4-oxoquinazolin-3-phenyl derivatives hybridized with pyridine 3a–d, 4a–d or pyran moiety 5a–d were synthesized; their structures were confirmed by spectral and elemental analysis. Cytotoxicity was evaluated on three cancer cell lines (HEPG2, HCT116 and MCF7) using the sulphorodamine-B assay method and doxorubicin as a reference drug. Compound 5d showed a closely similar activity to doxorubicin on MCF7; their IC50 values are 4.6 and 4.4 nmol/mL, respectively. In addition, compounds 4b and 4c exhibited a closely similar activity to doxorubicin on HEPG2 cancer cells; their IC50 values expressed in nmol/mL are 6.6, 6.7, and 5.7, respectively. Moreover, compound 4b (IC50 = 1.2 nmol/mL) was four times more potent than doxorubicin (IC50 = 4.8 nmol/mL) on HCT116, and compound 5d (IC50 = 0.2 nmol/mL) revealed potency equal to 24 times the potency of doxorubicin on the same cancer cell line. The most active compounds were screened against EGFR TK, and results showed that compound 5d was the most potent inhibitor; its percentage of inhibition was 95.6. Furthermore, compound 5d was docked into the EGFR binding site to explore its possible interactions with EGFR TK.
合成了一系列与吡啶 3a-d、4a-d 或吡喃分子 5a-d 杂交的 2-(呋喃-2-基)-4-氧代喹唑啉-3-苯基新衍生物,并通过光谱和元素分析确认了它们的结构。以多柔比星为参照药物,采用磺胺-B 法对三种癌细胞系(HEPG2、HCT116 和 MCF7)进行了细胞毒性评估。化合物 5d 对 MCF7 的活性与多柔比星非常相似,它们的 IC50 值分别为 4.6 和 4.4 nmol/mL。此外,化合物 4b 和 4c 对 HEPG2 癌细胞的活性与多柔比星极为相似;它们的 IC50 值(以 nmol/mL 表示)分别为 6.6、6.7 和 5.7。此外,化合物 4b(IC50 = 1.2 nmol/mL)比多柔比星(IC50 = 4.8 nmol/mL)的四倍,化合物5d(IC50 = 0.2 nmol/mL)对HCT116的效力相当于多柔比星对同一癌细胞株效力的24倍。针对表皮生长因子受体 TK 筛选出了最有效的化合物,结果表明化合物 5d 是最有效的抑制剂;其抑制百分比为 95.6。此外,还将化合物 5d 与表皮生长因子受体结合部位对接,以探索其与表皮生长因子受体 TK 之间可能存在的相互作用。