Synthesis, characterization and evaluation of antibacterial activity of some thiazolo[3,2-b][1,2,4]triazole incorporating diphenylsulfone moieties☆
作者:Stefania-Felicia Barbuceanu、Gabriela Laura Almajan、Ioana Saramet、Constantin Draghici、Ana Isabela Tarcomnicu、Gabriela Bancescu
DOI:10.1016/j.ejmech.2009.06.021
日期:2009.11
cyclized to 2-[4-(4-X-phenylsulfonyl)phenyl]-6-(4-Y-phenyl)[1,3]thiazolo[3,2-b]-[1,2,4]-triazoles 6, 7 (I) and not to isomeric thiazolo[2,3-c][1,2,4]-triazoles 6, 7 (II). The newly synthesized compounds were characterized by IR, 1H, 13C NMR and elemental analysis. MS spectra confirmed the formation of thiazolo[3,2-b][1,2,4]triazole 6, 7 (forms I) in detriment of [2,3-c] isomeric compounds (forms II). The
从5- [4-(4-X-苯基磺酰基)苯基] -4 H -1,2,4-开始合成一系列结合有二苯砜部分的噻唑并[3,2- b ] [1,2,4]三唑三唑-3-硫醇3a – c,X = H,Cl,Br。因此,-1,2,4-三唑烷基化3与苯甲酰甲基溴或4-溴苯甲酰甲基溴,得到S-取代的1,2,4-三唑4,5。在H 2 SO 4(c)存在下,将这些新的中间体4和5环化成2- [4-(4-X-苯基磺酰基)苯基] -6-(4-Y-苯基)[1,3 ] thiazolo [3,2- b ]-[1,2,4]-三唑6,7(I),而不是同分异构噻唑并[2,3- c ^ ] [1,2,4] -triazoles 6,7(II)。通过IR,1 H,13 C NMR和元素分析对新合成的化合物进行表征。MS谱证实噻唑并[3,2-的形成b ] [1,2,4]三唑6,7(形式I)中的[2,3-损害Ç ]异构体化合物(形式II