A series of azepino[3′,4′:4,5]pyrrolo[2,1-a]isoquinolin-12-ones (3a–f), that were conformationally restricted analogs of lead compound 2, were designed as potential cytotoxic compounds and synthesized using a radical oxidative aromatic substitution reaction as the key step. Compounds 3a–f were tested on five tumor cell lines to determine the conformational requirements for biological activity of compound
作为潜在的细胞毒性化合物,设计了一系列azepino [3',4':4,5]吡咯并[2,1 - a ]异喹啉-12-酮(3a–f),它们是前导化合物2的构象受限类似物。并以自由基氧化性芳族取代反应为关键步骤进行合成。在5种肿瘤细胞系上测试了化合物3a–f,以确定化合物2的生物学活性的构象要求。结果表明,对化合物2的构象限制(生成衍生物3a - f)并没有明显降低2的细胞毒活性,尽管化合物3d(R = Br)显示出对U-251细胞的良好活性。对这些化合物进行的初步结构-活性关系研究表明,结合至异喹啉部分的卤素非常重要。此外,衍生物3f(R = NO 2)和3b(R = F)对PC-3和K-562细胞具有细胞毒性。然而,azepino [3',4':4,5]吡咯并[2,1- a ]异喹啉酮均未抑制CDK1 / cyclin B,CDK5 / p25或GSK-3的酶活性。