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。
Antimycobacterial N-alkoxyphenylhydroxynaphthalenecarboxamides affecting photosystem II
N-(Alkoxyphenyl)-2-hydroxynaphthalene-1-carboxamides (series A) and N-(alkoxyphenyl)-1-hydroxynaphthalene-2-carboxamides (series B) affecting photosystem (PS) II inhibited photosynthetic electron transport (PET) in spinach chloroplasts. Their inhibitory activity depended on the compound lipophilicity as well as on the position of the alkoxy substituent. The most potent PET inhibitors were 2-hydrox
N-(烷氧基苯基)-2-羟基萘-1-甲酰胺(A系列)和N-(烷氧基苯基)-1-羟基萘-2-甲酰胺(B系列)影响光系统(PS)II抑制菠菜中的光合电子传递(PET)叶绿体。它们的抑制活性取决于化合物的亲脂性以及烷氧基取代基的位置。最有效的PET抑制剂是A系列中的2-羟基-N-苯基萘-1-甲酰胺和N- [3-(丁-2-基氧基)苯基] -2-羟基萘-1-甲酰胺(IC50 = 28.9和42.5µM系列中的1-羟基-N-(3-丙氧基苯基)萘-2-甲酰胺和1-羟基-N-(3-乙氧基苯基)-萘-2-甲酰胺(分别为IC50 = 2.0和3.1µM) B. B系列的C'(3)或C'(4)烷氧基取代的化合物的抑制活性明显高于C' (2)系列A中的PET。将两个系列的PET抑制活性与最近报道的异构N-烷氧基苯基-3-羟基萘-2-羧酰胺(C系列)的PET抑制作用进行了比较。通过荧光光谱法证明了所研究化合物与主要存在于PS
PIGMENT COMPOSITION, INKJET RECORDING INK, COLORING COMPOSITION FOR COLOR FILTER, AND COLOR FILTER
申请人:HIGASHI Masahiro
公开号:US20120001133A1
公开(公告)日:2012-01-05
A pigment composition including (A) an azo pigment represented by formula (1), and
at least one selected from the group consisting of (B) a coloring agent represented by formula (2), and (C) at least one selected from the group consisting of an additive represented by formula (3) and an additive represented by formula (4).
Described herein are novel compositions and methods of treatment addressing diseases such as neurodegenerative diseases, including prion diseases and Alzheimer's disease.