71022-43-0Relevant articles and documents
2-((3,5-Dinitrobenzyl)thio)quinazolinones: Potent Antimycobacterial Agents Activated by Deazaflavin (F420)-Dependent Nitroreductase (Ddn)
Jian, Yanlin,Forbes, He Eun,Hulpia, Fabian,Risseeuw, Martijn D. P.,Caljon, Guy,Munier-Lehmann, Hélène,Boshoff, Helena I. M.,Van Calenbergh, Serge
, p. 440 - 457 (2021/01/14)
Swapping the substituents in positions 2 and 4 of the previously synthesized but yet undisclosed 5-cyano-4-(methylthio)-2-arylpyrimidin-6-ones 4, ring closure, and further optimization led to the identification of the potent antitubercular 2-thio-substituted quinazolinone 26. Structure-activity relationship (SAR) studies indicated a crucial role for both meta-nitro substituents for antitubercular activity, while the introduction of polar substituents on the quinazolinone core allowed reduction of bovine serum albumin (BSA) binding (63c, 63d). While most of the tested quinazolinones exhibited no cytotoxicity against MRC-5, the most potent compound 26 was found to be mutagenic via the Ames test. This analogue exhibited moderate inhibitory potency against Mycobacterium tuberculosis thymidylate kinase, the target of the 3-cyanopyridones that lies at the basis of the current analogues, indicating that the whole-cell antimycobacterial activity of the present S-substituted thioquinazolinones is likely due to modulation of alternative or additional targets. Diminished antimycobacterial activity was observed against mutants affected in cofactor F420 biosynthesis (fbiC), cofactor reduction (fgd), or deazaflavin-dependent nitroreductase activity (rv3547), indicating that reductive activation of the 3,5-dinitrobenzyl analogues is key to antimycobacterial activity.
Novel method for synthesizing 3, 5-dinitrobenzyl chloride
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Paragraph 0020-0025, (2020/07/21)
The invention provides a novel method for synthesizing 3, 5-dinitrobenzyl chloride. The novel method comprises the following steps: a, carrying out reduction reaction on 3, 5-dinitrobenzoyl chloride and a reducing agent in a first solvent to obtain 3, 5-dinitrobenzene methanol; and b, carrying out chlorination reaction on the 3, 5-dinitrobenzene methanol, a chlorination reagent and a catalyst in asecond solvent to obtain the 3, 5-dinitrobenzyl chloride. According to the method, the reduction process of the 3, 5-dinitrobenzoyl chloride is remarkably improved, a simple reducing agent is used, nitro reduction is avoided under the assistance of Lewis acid and Lewis alkali, and the reaction selectivity and the product yield are improved.
Design, synthesis, and biological evaluation of m-amidophenol derivatives as a new class of antitubercular agents
Zhang, Niu-niu,Liu, Zhi-yong,Liang, Jie,Tang, Yun-xiang,Qian, Lu,Gao, Ya-min,Zhang, Tian-Yu,Zhang, Tian-yu,Yan, Ming
supporting information, p. 1293 - 1304 (2018/08/28)
A series of m-amidophenol derivatives (6a-6l, 7a-7q, 9a, 9b, 12a-12c, 14 and 15) were designed and synthesized. Their antitubercular activities were evaluated in vitro against M. tuberculosis strains H37Ra and H37Rv and clinically isolated multidrug-resistant M. tuberculosis strains. Ten compounds displayed minimal inhibitory concentrations (MICs) against M. tuberculosis H37Ra below 2.5 μg mL?1 and 6g was the most active compound (MIC = 0.625 μg mL?1). Compounds 6g and 7a also showed potent inhibitory activity against M. tuberculosis H37Rv (MIC = 0.39 μg mL?1) and several clinically isolated multidrug-resistant M. tuberculosis strains (MIC = 0.39-3.125 μg mL?1). The compounds did not show inhibitory activity against normal Gram-positive and Gram-negative bacteria. They exhibited low cytotoxicity against HepG2 and RAW264.7 cell lines. The results demonstrated m-amidophenol as an attractive scaffold for the development of new antitubercular agents.