抗微生物活性和抗真菌机制性研究对3替代的oxindoles对Aspergillus niger进行抗菌研究
Hend A A Ezelarab1,2, Maisra M El-Bouseary3, Ramadan Yahia4
1Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
Scientific reports
|November 29, 2025
概括
新的oxindole衍生物显示出作为抗菌和抗真菌剂的前景. 化合物3f有效向真菌细胞壁生物合成,为抗真菌药物开发提供了潜在的新策略.
科学领域:
- 药用化学 医学化学
- 有机合成 有机合成
- 抗菌研究 抗菌研究
背景情况:
- 牛津醇衍生物是一种具有多种生物活性的异环化合物.
- 耐药细菌和真菌的出现需要开发新的抗菌剂.
- 对抗微生物特性进行新的化学支架的研究对于应对公共卫生挑战至关重要.
研究的目的:
- 合成一系列3替代的氧醇衍生物 (3a-j).
- 评估合成化合物的抗菌和抗真菌活性.
- 识别具有强大的抗微生物特性的化合物并阐明它们的作用机制.
主要方法:
- 使用标准有机化学技术合成3替代氧醇衍生物.
- 抗菌查针对格拉姆阳性细菌 (S. aureus,MRSA,E. faecalis) 和格拉姆阴性细菌 (P. aeruginosa,K. 肺炎,E. coli).
- 对Candida albicans和Aspergillus spp.进行抗真菌查. 使用阿加扩散和MIC测定.
- 作用机制研究包括细胞壁完整性破坏和分子对接.
主要成果:
- 化合物3i和3j表现出显著的抗菌活性,特别是在对抗格拉姆阳性细菌.
- 化合物3f表现出强大的抗真菌活性,对抗阿斯伯吉卢斯种类,抑制区为20毫米.
- 最低抑制度 (MIC) 测试确定3f化合物是最强的抗真菌剂 (MIC = 7.5μg/mL对抗黑色阿斯伯菌),表现优于克洛特利马.
- 发现化合物3f可以破坏真菌细胞壁的完整性,而无需与厄戈斯特结合.
- 对接研究表明,一种双重目标机制涉及基脱乙酶和1,3-β-葡萄糖合成酶,抑制细胞壁生物合成.
结论:
- 3替代的氧醇衍生物具有有前途的抗菌和抗真菌活性.
- 化合物3f被确定为一种高度有效的抗真菌剂,具有针对真菌细胞壁生物合成的新型作用机制.
- 化合物3f代表了一个有前途的脚架,用于开发新的抗真菌疗法.
更多相关视频
08:54Broth Microdilution In Vitro Screening: An Easy and Fast Method to Detect New Antifungal Compounds
Published on: February 14, 2018
19.9K
09:21Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.
Published on: February 15, 2019
11.1K
相关概念视频
01:28Fungal Phylum Ascomycota
977
Phylum Ascomycota, a major division within the subkingdom Dikarya, comprises a diverse range of fungal species, including both unicellular yeasts and filamentous molds such as Aspergillus and Penicillium. These fungi thrive in a variety of habitats, from aquatic ecosystems to terrestrial environments, playing crucial ecological and economic roles.Morphology and ReproductionThe defining characteristic of Ascomycetes, commonly referred to as sac fungi, is the ascus—a sac-like structure that...
977
01:28Antimicrobial Effectiveness
883
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
883
01:29Preparation of Amines: Reduction of Oximes and Nitro Compounds
4.6K
Oximes can be reduced to primary amines using catalytic hydrogenation, hydride reduction, or sodium metal reduction. The reduction of aliphatic and aromatic nitro compounds to primary amines takes place by either catalytic hydrogenation or by using active metals like Fe, Zn, and Sn in the presence of an acid.
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
4.6K