Synthesis and Biological Evaluation of Benzothiazole Derivatives Bearing the<i>ortho</i>-Hydroxy-<i>N</i>-acylhydrazone Moiety as Potent Antitumor Agents
作者:Junjie Ma、Guangyan Zhang、Xiaoqi Han、Guanglong Bao、Lihui Wang、Xin Zhai、Ping Gong
DOI:10.1002/ardp.201400230
日期:2014.12
A novel series of benzothiazole derivatives bearing the ortho‐hydroxy‐N‐acylhydrazone moiety were designed, synthesized, and evaluated for their procaspase‐3 kinase activation activities and antiproliferative activities against five cancer cell lines (NCI‐H226, SK‐N‐SH, HT29, MKN‐45, and MDA‐MB‐231). Most target compounds showed moderate to excellent cytotoxic activity against all five tested cancer
设计、合成了一系列带有邻羟基-N-酰基腙部分的新型苯并噻唑衍生物,并评估了它们对五种癌细胞系(NCI-H226、SK-N-SH、 HT29、MKN-45 和 MDA-MB-231)。大多数目标化合物对所有五个测试的癌症系都显示出中等至极好的细胞毒活性。最有希望的化合物 18e(procaspase-3 EC50 = 0.31 µM)对所有测试细胞系的 IC50 值范围为 0.24 至 0.92 µM,其活性是 PAC-1(procaspase-3 EC50 = 0.41 µM)的 4.24-12.2 倍。构效关系研究表明,2-羟基苯环上的苯基(A 部分)对体外药理活性至关重要。此外,在 A 部分引入苄氧基和在苄氧基的 4 位引入单吸电子基团更有利于抗肿瘤活性。此外,苄氧基苯环中电子密度的降低导致 procaspase-3 激酶活化活性的显着降低。