A series of saccharide-modified thiadiazole sulfonamide derivatives has been designed and synthesized by the “tail approach” and evaluated for inhibitory activity against carbonic anhydrases II, IX, and XII. Most of the compounds showed high topological polar surface area (TPSA) values and excellent enzyme inhibitory activity. The impacts of some compounds on the viability of HT-29, MDA-MB-231, and MG-63 human cancer cell lines were examined under both normoxic and hypoxic conditions, and they showed certain inhibitory effects on cell viability. Moreover, it was found that the series of compounds had the ability to raise the pH of the tumor cell microenvironment. All the results proved that saccharide-modified thiadiazole sulfonamides have important research prospects for the development of CA IX inhibitors.
一系列糖苷修饰的噻二唑磺胺衍生物已通过“尾部方法”设计和合成,并针对碳酸酐酶II、IX和XII的抑制活性进行评估。大多数化合物显示出较高的拓扑极性表面积(TPSA)值和优秀的酶抑制活性。一些化合物对HT-29、MDA-MB-231和MG-63人类癌细胞系的存活率在常氧和低氧条件下进行了检查,它们显示出一定的细胞存活抑制作用。此外,发现这一系列化合物具有提高肿瘤细胞微环境pH值的能力。所有结果证明,糖苷修饰的噻二唑磺胺具有重要的CA IX抑制剂开发研究前景。