Facile synthesis, characterization and pharmacological activities of 3,6-disubstituted 1,2,4-triazolo[3,4-b][1,3,4]thiadiazoles and 5,6-dihydro-3,6-disubstituted-1,2,4-triazolo[3,4-b][1,3,4]thiadiazoles
作者:N. Chidananda、Boja Poojary、V. Sumangala、N. Suchetha Kumari、Prashanth Shetty、T. Arulmoli
DOI:10.1016/j.ejmech.2012.02.030
日期:2012.5
Two new series of compounds namely, 3,6-disubstituted-1,2,4-triazolo[3,4-b][1,3,4]thiadizoles (5a–j) and 5,6-dihydro-3,6-disubstituted-1,2,4-triazolo[3,4-b][1,3,4]thiadizoles (7a–j) were prepared. In continuation of a previously reported study, the first series (5a–j) were synthesized by the cyclocondensation of 4-amino-5-(2-bromo-5-methoxyphenyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (4) with various
两个新的系列化合物,即3,6-二取代-1,2,4-三唑[3,4- b ] [1,3,4]噻二唑(5a – j)和5,6-二氢-3,6制备了-二取代-1,2,4-三唑并[3,4- b ] [1,3,4]噻二唑(7a – j)。在先前报道的研究基础上,第一个系列(5a – j)是通过4-氨基-5-(2-溴-5-甲氧基苯基)-2,4-二氢-3 H -1,2的环缩合反应合成的,(4-)三唑-3-硫酮(4)与氯氧磷中的各种取代的芳族羧酸和第二系列(7a – j)通过(4)的反应)在对甲苯磺酸存在下用各种取代的芳族醛 (4)与醛(9)的反应提供了用对甲苯磺酸处理的席夫碱(10)而不是环化产物(11)。通过光谱分析在结构上确认了合成的化合物,并研究了它们的抗炎,止痛,抗氧化和抗菌活性。一些测试化合物显示出显着的药理活性。