Synthesis and anti-tubercular activity of a series of 2-sulfonamido/trifluoromethyl-6-substituted imidazo[2,1-b]-1,3,4-thiadiazole derivatives
作者:Andanappa K. Gadad、Malleshappa N. Noolvi、Rajshekhar V. Karpoormath
DOI:10.1016/j.bmc.2004.07.060
日期:2004.11
A series of 2-sulfonamido/trifluoromethyl-6-(4'-substituted aryl/heteroaryl)imidazo[2,1-b]-1,3,4-thiadiazole derivatives (II) have been synthesized by reaction of 2-amino-5-sulfonamido/trifluoromethyl-1,3,4-thiadiazoles and an appropriate alpha-haloaryl/heteroaryl ketones. Further 5-bromo (III), 5-thiocyanato (IV), 5-gaunylhydrazone (V) derivatives were synthesized in order to study the effect of these
一系列的2-磺酰胺基/三氟甲基-6-(4'-取代的芳基/杂芳基)咪唑并[2,1-b] -1,3,4-噻二唑衍生物(II)已通过2-氨基- 5-磺酰胺基/三氟甲基-1,3,4-噻二唑和适当的α-卤代芳基/杂芳基酮。为了研究这些取代基对生物活性的影响,还合成了5-溴(III),5-硫氰酸根(IV),5-甘氨酰hydr(V)衍生物。这些化合物的结构通过IR,(1)H NMR,(13)C NMR,质量和HRMS确定。使用放射BACTEC和肉汤稀释测定方法评估所选化合物对结核分枝杆菌H37Rv菌株的初步体外抗结核活性。结果表明,化合物5、7、8 10和12在MIC> 6.25 microg / mL时表现出中等至良好的抗结核活性,抑制百分比分别为29、43、58、31和41。化合物18的MIC为20微克/毫升。