Novel tetrazoloquinoline–thiazolidinone conjugates as possible antitubercular agents: synthesis and molecular docking
作者:Dnyaneshwar D. Subhedar、Mubarak H. Shaikh、Bapurao B. Shingate、Laxman Nawale、Dhiman Sarkar、Vijay M. Khedkar
DOI:10.1039/c6md00278a
日期:——
A novel approach for the synthesis of a new 4-thiazolidinone scaffold was developed by a one-pot three-component cyclocondensation of various tetrazolo quinoline aldehydes 1a–f, acid hydrazide 2a–c, and thioglycolic acid 3 in the presence of [DBUH][OAc] as a catalyst in high yields. All the conjugates were screened for their antimycobacterial activity against MTB H37Ra and M. bovis BCG strains, with
在[DBUH]存在下,通过四氮杂喹啉醛1a-f,酰肼2a-c和巯基乙酸3的一锅三组分环缩合,开发了一种新的合成4-噻唑烷酮支架的新方法。[OAc]作为高收率的催化剂。筛选所有缀合物对MTB H37Ra和牛分枝杆菌BCG菌株的抗分枝杆菌活性,MIC值分别为0.99–13.55μmolmL -1和0.14–20.11μmolmL -1。结合有4-噻唑烷酮的四唑并喹啉衍生物4a,4d,4g,4j,4m和4p对MTB H37Ra和牛分枝杆菌BCG菌株非常有效。还评估了活性最高的化合物对MCF-7,A549和HCT 116细胞系的细胞毒性,发现它们无细胞毒性。此外,对InhA酶活性位点的分子对接研究揭示了与晶体结构中天然配体的相似结合模式,从而帮助我们理解了配体与蛋白质的结合相互作用,并为抑制结核分枝杆菌奠定了结构基础。结果表明,四唑喹啉-噻唑烷酮共轭物4a,4d,4g,4j,4m和4p是很有前途的抗结核药。