Synthesis and pharmacological properties of N-substituted-N′-(4,6-dimethylpyrimidin-2-yl)-thiourea derivatives and related fused heterocyclic compounds
作者:Sohail Saeed、Naghmana Rashid、Peter G. Jones、Arifa Tahir
DOI:10.1002/jhet.510
日期:2011.1
A series of new N‐Substituted‐N′‐(4,6‐dimethylpyrimidin‐2‐yl)‐thiourea derivatives (3a, 3b, 3c, 3d) and related fused heterocyclic compounds (4a, 4b, 4c, 4d) were synthesized using tetrabutylammonium bromide as phase transfer catalyst (PTC). N‐[(2E)‐5,7‐dimethyl‐2H‐[1,2,4] thiadiazolo [2,3‐a] pyrimidin‐2‐ylidene] derivatives (4a, 4b, 4c, 4d) were prepared by oxidative cyclization of 3a, 3b, 3c, 3d
合成了一系列新的N-取代N '(4,6-二甲基嘧啶-2-基)-硫脲衍生物(3a,3b,3c,3d)和相关的稠合杂环化合物(4a,4b,4c,4d)使用四丁基溴化铵作为相转移催化剂(PTC)。制备了N -[(2 E)-5,7-二甲基-2 H- [1,2,4]噻二唑[2,3- a ]嘧啶-2-亚基]衍生物(4a,4b,4c,4d)通过3a的氧化环化,3b,3c,3d。这些新化合物的结构通过IR,1 H NMR,13 C NMR,质谱和元素分析进行表征。晶体结构由单晶X射线衍射数据确定。结果表明,该化合物对被测微生物具有广谱的活性,并且与细菌相比,对真菌的活性更高。化合物3d和3a表现出最大的抗菌活性。J.杂环化学.2011。