Twenty 2,3-disubstituted quinazolin-4(3H)-one derivatives 1–20 were successfully synthesized in moderate to good yields (25–82%). Their syntheses were based on a one pot tandem ring opening procedure followed by iodine-catalyzed oxidative cyclization of isatoic anhydride with aldehydes, using water as the only solvent under both classical and microwave irradiation conditions. Cytotoxicity assays of the prepared compounds against three human cancer cell lines (HeLa, MCF-7, and A549) indicated that 2, 3, and 20 possessed moderate activities against MCF-7 cells (IC₅₀ = 47.2 μM, 43.9 μM, and 44.9 μM, respectively). Good cytotoxic activities against A549 cells were observed for 3 and 8 with IC₅₀ values of 30.7 μM and 29.8 μM, respectively, which were comparable to the positive control, 5-fluorouracil (5-FU, IC₅₀ = 27.9 μM). Furthermore, compound 4 exhibited slightly stronger activity (IC₅₀ = 23.6 μM) than the positive control 5-FU against the A549 cell line.

20 种 2,3-二取代喹唑啉-4(3 H )-one 衍生物1 – 20以中等至良好的产率 (25–82%) 成功合成。他们的合成基于一锅串联开环程序，然后是碘催化的靛红酸酐与醛的氧化环化，在经典和微波辐射条件下使用水作为唯一溶剂。针对三种人癌细胞系（HeLa细胞，MCF-7，和A549）制备的化合物的细胞毒性测定法表明，2，3，和20具有适度的活动对MCF-7细胞（IC ₅₀ = 47.2 μM、43.9 μM 和 44.9 μM，分别）。针对 A549 细胞的良好细胞毒活性观察到3和8，IC ₅₀值分别为 30.7 μM 和 29.8 μM，与阳性对照 5-氟尿嘧啶（5-FU，IC ₅₀  = 27.9 μM）相当。此外，化合物4 对 A549 细胞系表现出比阳性对照 5-FU稍强的活性 (IC ₅₀ = 23.6 μM)。