Synthesis and Biological Evaluation of N-Alkoxyphenyl-3-hydroxynaphthalene-2-carboxanilides
作者:Tomas Gonec、Iveta Zadrazilova、Eoghan Nevin、Tereza Kauerova、Matus Pesko、Jiri Kos、Michal Oravec、Peter Kollar、Aidan Coffey、Jim O'Mahony、Alois Cizek、Katarina Kralova、Josef Jampilek
DOI:10.3390/molecules20069767
日期:——
A series of fifteen new N-alkoxyphenylanilides of 3-hydroxynaphthalene-2-carboxylic acid was prepared and characterized. Primary in vitro screening of the synthesized compounds was performed against Staphylococcus aureus, three methicillin-resistant S. aureus strains, Mycobacterium tuberculosis H37Ra and M. avium subsp. paratuberculosis. Some of the tested compounds showed antibacterial and antimycobacterial activity against the tested strains comparable with or higher than that of the standards ampicillin or rifampicin. 3-Hydroxy-N-(2-propoxyphenyl)naphthalene-2-carboxamide and N-[2-(but-2-yloxy)-phenyl]-3-hydroxynaphthalene-2-carboxamide had MIC = 12 µM against all methicillin-resistant S. aureus strains; thus their activity is 4-fold higher than that of ampicillin. The second mentioned compound as well as 3-hydroxy-N-[3-(prop-2-yloxy)phenyl]-naphthalene-2-carboxamide had MICs = 23 µM and 24 µM against M. tuberculosis respectively. N-[2-(But-2-yloxy)phenyl]-3-hydroxynaphthalene-2-carboxamide demonstrated higher activity against M. avium subsp. paratuberculosis than rifampicin. Screening of the cytotoxicity of the most effective antimycobacterial compounds was performed using THP-1 cells, and no significant lethal effect was observed for the most potent compounds. The compounds were additionally tested for their activity related to inhibition of photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts. N-(3-Ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide (IC50 = 4.5 µM) was the most active PET inhibitor. The structure-activity relationships are discussed.
制备并表征了一系列15种新的N-烷氧基苯基苯胺衍生物,针对3-羟基萘-2-羧酸。对合成化合物进行的初步体外筛选涉及金黄色葡萄球菌、三种耐甲氧西林金黄色葡萄球菌株、结核分枝杆菌H37Ra和副结核分枝杆菌。部分测试化合物显示出对所测试菌株的抗菌和抗分枝杆菌活性,与标准药物青霉素或利福平相当或更强。3-羟基-N-(2-丙氧基苯基)萘-2-羧酰胺和N-[2-(丁-2-氧基)苯基]-3-羟基萘-2-羧酰胺对所有耐甲氧西林金黄色葡萄球菌株的最低抑制浓度为12 µM,因此它们的活性是青霉素的4倍。第二种提到的化合物以及3-羟基-N-[3-(丙-2-氧基)苯基]-萘-2-羧酰胺对结核分枝杆菌的最低抑制浓度分别为23 µM和24 µM。N-[2-(丁-2-氧基)苯基]-3-羟基萘-2-羧酰胺对副结核分枝杆菌显示出比利福平更高的活性。使用THP-1细胞对最有效的抗分枝杆菌化合物进行的细胞毒性筛选中,观察到大多数有效化合物未表现出显著的致死效应。此外,这些化合物还被测试了其对菠菜(Spinacia oleracea L.) 叶绿体中光合电子传递(PET)的抑制活性。N-(3-乙氧基苯基)-3-羟基萘-2-羧酰胺(半数抑制浓度 = 4.5 µM)是最活跃的PET抑制剂。讨论了结构-活性关系。