Novel quinolone substituted 1,3,4-oxadiazole derivatives: design, synthesis, antimicrobial and anti-inflammatory potential.

IF 3.9 2区 化学 Q2 CHEMISTRY, APPLIED
Vishal Sharma, Rina Das, Dinesh Kumar Mehta, Diksha Sharma
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引用次数: 0

Abstract

A novel series of quinolone-substituted 1,3,4-oxadiazole derivatives 4(a-l) have been designed and synthesized. The target compounds were investigated for their antibacterial activity against gram positive (Staphylococcus aureus, ATCC 25923, Enterococcus faecalis, ATCC 29212) and gram negative bacterium (Escherichia coli, ATCC 25922, Pseudomonas aeruginosa, ATCC 27853) for antifungal activity using (Candida albicans, ATCC 10231) and anti-inflammatory activity as COX-II inhibitors, respectively. The 1,3,4-oxadiazole functionality was introduced at C-6 position of pipemidic acid derivatives. IR, 1H NMR and Mass spectrometry techniques confirmed the structure of synthesized derivatives. The quinolone (pipemidic acid)-oxadiazole hybrid derivatives were effective against bacterial strains. When compared to ciprofloxacin (MIC 16 µg/mL), the compounds under consideration (4f, 4h, and 4k) showed significant antibacterial activity against all bacterial strains except Enterococcus faecalis, with MICs of 8 µg/mL. On the other hand, synthesized target compounds 4(a-l) did not respond well against Candida albicans fungal strain. The compound (4k) represents high % inhibition against COX-II. The compounds (4f, 4h and 4k) exhibited highest hydrogen bonding interaction with ARG57, ARG72, ARG78, LEU54 and MET16 target residues with a binding energy of - 8.4, - 8.6 and - 8.5 kcal/mol into the active pocket of DNA gyrase enzyme respectively even better in comparison to reference ligands. Based on the docking study, quinolone (pipemidic acid) oxadiazole hybrid structural ligands exhibited strong interaction at binding pockets of DNA gyrase enzyme.

Abstract Image

新型喹诺酮取代的 1,3,4-恶二唑衍生物:设计、合成、抗菌和消炎潜力。
我们设计并合成了一系列新型喹诺酮取代型 1,3,4-恶二唑衍生物 4(a-l)。研究了目标化合物对革兰氏阳性菌(金黄色葡萄球菌,ATCC 25923;粪肠球菌,ATCC 29212)和革兰氏阴性菌(大肠杆菌,ATCC 25922;铜绿假单胞菌,ATCC 27853)的抗菌活性,以及作为 COX-II 抑制剂的抗炎活性。在哌啶甲酸衍生物的 C-6 位引入了 1,3,4-噁二唑官能团。红外光谱、1H NMR 和质谱技术证实了合成衍生物的结构。喹诺酮(哌啶甲酸)-噁二唑混合衍生物对细菌菌株有效。与环丙沙星(MIC 16 µg/mL)相比,所研究的化合物(4f、4h 和 4k)对除粪肠球菌以外的所有细菌菌株都具有显著的抗菌活性,MIC 为 8 µg/mL。另一方面,合成的目标化合物 4(a-l)对白色念珠菌真菌菌株反应不佳。化合物(4k)对 COX-II 的抑制率较高。化合物(4f、4h 和 4k)与 ARG57、ARG72、ARG78、LEU54 和 MET16 目标残基的氢键相互作用最高,与 DNA 回旋酶活性口袋的结合能分别为 - 8.4、- 8.6 和 - 8.5 kcal/mol,甚至优于参考配体。根据对接研究,喹诺酮(哌啶甲酸)噁二唑杂合结构配体在 DNA 回旋酶的结合口袋中表现出很强的相互作用。
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来源期刊
Molecular Diversity
Molecular Diversity 化学-化学综合
CiteScore
7.30
自引率
7.90%
发文量
219
审稿时长
2.7 months
期刊介绍: Molecular Diversity is a new publication forum for the rapid publication of refereed papers dedicated to describing the development, application and theory of molecular diversity and combinatorial chemistry in basic and applied research and drug discovery. The journal publishes both short and full papers, perspectives, news and reviews dealing with all aspects of the generation of molecular diversity, application of diversity for screening against alternative targets of all types (biological, biophysical, technological), analysis of results obtained and their application in various scientific disciplines/approaches including: combinatorial chemistry and parallel synthesis; small molecule libraries; microwave synthesis; flow synthesis; fluorous synthesis; diversity oriented synthesis (DOS); nanoreactors; click chemistry; multiplex technologies; fragment- and ligand-based design; structure/function/SAR; computational chemistry and molecular design; chemoinformatics; screening techniques and screening interfaces; analytical and purification methods; robotics, automation and miniaturization; targeted libraries; display libraries; peptides and peptoids; proteins; oligonucleotides; carbohydrates; natural diversity; new methods of library formulation and deconvolution; directed evolution, origin of life and recombination; search techniques, landscapes, random chemistry and more;
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