Ecofriendly synthesis and biological evaluation of 4-(4-nitro-phenyl)-2-phenyl-1,4-dihydro-benzo[4,5]imidazo[1,2-a]pyrimidine-3-carboxylic acid ethyl ester derivatives as an antitubercular agents
作者:Poojali P. Warekar、Priyanka T. Patil、Kirti T. Patil、Dattatraya K. Jamale、Govind B. Kolekar、Prashant V. Anbhule
DOI:10.1080/00397911.2016.1244273
日期:2016.12.16
ABSTRACT An ecofriendly route has been investigated for the synthesis of 4-(4-nitro-phenyl)-2-phenyl-1,4-dihydro-benzo[4,5]imidazo[1,2-a]pyrimidine-3-carboxylic acid ethyl ester derivatives by one-pot, three-component condensation of ethyl benzoylacetate, aromatic aldehydes, and 2-amino benzimidazole using 260 mol% of citric acid as reaction mediator. Citric acid is an inexpensive, nontoxic, and green
摘要 研究了合成 4-(4-硝基-苯基)-2-苯基-1,4-二氢-苯并[4,5]咪唑并[1,2-a]嘧啶-3-羧酸的环保路线。以 260 mol% 的柠檬酸为反应介质,通过苯甲酰乙酸乙酯、芳香醛和 2-氨基苯并咪唑的一锅三组分缩合反应制备酸乙酯衍生物。柠檬酸是一种廉价、无毒、绿色的介质,可以平滑地激活反应速率。使用微孔板阿拉玛蓝试验 (MABA) 评估合成的化合物对结核分枝杆菌 H37RV 菌株的体外抗分枝杆菌活性。结果表明,在所有合成的化合物系列中,P-4和P-9化合物表现出有效活性,最低抑菌浓度为25 μg/ml。图形概要