Due to a confirmed antimicrobial activity of both natural and synthetic
coumarin derivatives, the present study was envisaged to provide a further
insight into the antimicrobial potential of coumarins through a screening of
a designed library of nine 4-(alkylamino)-3-nitrocoumarins against a panel of
24 laboratory strains and resistant (isolates) bacterial and fungal
pathogens. All compounds showed some degree of strain-selective activity,
that was, in some cases, very pronounced, reaching the value of 0.04 nmol/ml
(i.e. 12 ng/ml) for the minimal inhibitory concentration against Candida
albicans. The observed activity was higher against Gram-negative strains,
among which the most susceptible strain, among both ATCC strains and clinical
isolates, was Salmonella enteritidis. These results point out to a high
potential of these coumarins as antimicrobials for the treatment of
gastrointestinal and other infections caused by highly resistant microbial
strains. Finally, a multivariate statistical analysis of the herein obtained
and previous results on the antimicrobial activity of related selected
coumarins was performed to allow an easier structure-activity discussion.
由于天然和合成香豆素衍生物的抗菌活性已得到证实
香豆素衍生物的抗菌活性,本研究旨在通过筛选香豆素衍生物的
香豆素的抗菌潜力。
设计的九种 4-(烷基氨基)-3-硝基香豆素文库对 24 种实验室菌株和耐药菌株(分离物)进行筛选,从而进一步了解香豆素的抗菌潜力。
24 种实验室菌株和耐药性(分离物)细菌和真菌病原体进行筛选,从而进一步了解香豆素的抗菌潜力。
病原体进行筛选。所有化合物都显示出一定程度的菌株选择性活性、
在某些情况下非常明显,达到 0.04 nmol/ml
(对白色念珠菌的最小抑制浓度为 0.04 nmol/ml(即 12 ng/ml)。
白念珠菌的最小抑制浓度为 0.04 nmol/ml(即 12 ng/ml)。对革兰氏阴性菌株的活性更高、
在 ATCC 菌株和临床分离物中,最易感的菌株是肠炎沙门氏菌。
肠炎沙门氏菌。这些结果表明
这些结果表明,这些香豆素作为抗菌剂在治疗胃肠道和其他感染方面具有很高的潜力。
这些结果表明,这些香豆素作为抗菌剂,在治疗由高耐药性微生物菌株引起的胃肠道和其他感染方面具有很高的潜力。
菌株引起的胃肠道感染和其他感染。最后,对本文中获得的
的抗菌活性进行了多元统计分析,从而得出结论
香豆素的抗菌活性进行了多元统计分析,以便于进行结构-活性讨论。