Organoiodine (III)-mediated synthesis of 3-aryl/heteroaryl-5,7-dimethyl-1,2,4-triazolo[4,3-c]pyrimidines as antibacterial agents
作者:Ravi Kumar、Reshmi R. Nair、Saurabh Sudha Dhiman、Jitender Sharma、Om Prakash
DOI:10.1016/j.ejmech.2008.06.004
日期:2009.5
Synthesis of 12 new 3-aryl/heteroaryl-5,7-dimethyl-1,2,4-triazolo[4,3-c]pyrimidines (3a–l) has been accomplished by the oxidation of pyrimidinylhydrazones (2a–l) of various aryl/heteroaryl aldehydes using 1.1 equiv. of iodobenzene diacetate (IBD) in dichloromethane. All the compounds 3a–l tested in vitro for their antibacterial activity against two Gram-positive bacteria namely, Bacillus subtilis,
12种新的3-芳基/杂芳基-5,7-二甲基-1,2,4-三唑并[4,3- c ]嘧啶(3a - l)的合成已通过氧化亚氨基的嘧啶基hydr(2a - l)来完成。使用1.1当量的各种芳基/杂芳基醛 二氯甲烷中的二碘代碘苯(IBD)。所有化合物3a – l在体外均测试了对两种革兰氏阳性菌即枯草芽孢杆菌,嗜热脂肪芽孢杆菌和两种革兰氏阴性菌恶臭假单胞菌,大肠杆菌的抗菌活性。。两种化合物,即3-(2,4-二氯苯基)-5,7-二甲基-1,2,4-三唑并[4,3- c ]嘧啶(3j)和3-(4-羟基-2-甲氧基苯基)发现-5,7-二甲基-1,2,4-三唑并[4,3- c ]嘧啶(3l)比市售抗生素(氯霉素和链霉素)具有同等效力或更强效。