In the present study a series of Schiff bases of indoline-2,3-dione were synthesized and investigated for their Mtb gyrase inhibitory activity. Promising inhibitory activity was demonstrated with some of these derivatives, which exhibited IC50 values ranging from 50–157 mM. The orientation and the ligand-receptor interactions of such molecules within the Mtb DNA gyrase A subunit active site were investigated applying a multi-step docking protocol using Molecular Operating Environment (MOE) and Autodock4 docking software. The results revealed the importance of the isatin moiety and the connecting side chain for strong interactions with the enzyme active site. Among the tested compounds the terminal aromatic ring benzofuran showed the best activity. Promising new leads for developing a novel class of Mtb gyrase inhibitors were obtained from Schiff bases of indoline-2,3-dione.
在本研究中,合成了一系列
吲哚啉-2,3-二酮的施夫碱,并研究了它们对结核分枝杆菌(Mtb)拓扑异构酶抑制活性。其中一些衍
生物显示出良好的抑制活性,IC50值范围为50–157 mM。通过采用多步骤的对接方案,利用分子操作环境(MOE)和Autodock4对接软件,研究了这些分子在Mtb DNA拓扑异构酶A亚基活性位点内的取向和
配体-受体相互作用。结果揭示了异
羧酸基团及连接侧链在与酶活性位点强相互作用中的重要性。在测试的化合物中,末端芳香环
苯并呋喃表现出最佳活性。从
吲哚啉-2,3-二酮的施夫碱中获得了开发新型Mtb拓扑异构酶
抑制剂的有希望的新线索。