Unusual transformation of substituted-3-formylchromones to pyrimidine analogues: Synthesis and antimicrobial activities of 5-(o-hydroxyaroyl)pyrimidines
作者:Tilak Raj、Narinder Singh、M.P.S. Ishar
DOI:10.1016/j.bmcl.2013.09.024
日期:2013.11
Substituted-3-formylchromones (4a–e) on reaction with 1,3-bis-dimethylaminomethylene-thiourea (5) in refluxing toluene solution give novel substituted 5-(o-hydroxyaroyl)pyrimidines (6a–e) in high yields. A mechanistic rationalization of the formation of products (6a–e) is proffered. Antimicrobial activities of all the synthesized compounds (6a–e) were evaluated against various fungal and bacterial
取代-3- formylchromones(4A - ë)与反应1,3-双二甲氨基亚甲基硫脲(5)在回流的取代的5-(甲苯溶液给予新颖ö -hydroxyaroyl)嘧啶(6A - ë)以高产率。提出了一种合理的产品形成方法(6a – e)。评估了所有合成化合物(6a - e)对各种真菌和细菌菌株的抗菌活性。化合物6d对白念珠菌显示出显着的抗真菌活性(MIC 15)相比之下,氟康唑用作阳性对照。一些化合物还显示出良好的抗菌活性。化合物6d对HeLa细胞的细胞毒性特征表明,在浓度(20μM)下,未观察到明显的细胞死亡(〜2%)。