Eleven N-phenyl- and 11 N-benzothiazolyl-2-(4-(2,3,4-trimethoxybenzyl)piperazin-1-yl)acetamides have been synthesised by a simple and efficient method. The 22 novel compounds were tested for their in vitro biological efficacy against two Gram-positive bacteria, three Gram-negative bacteria, two fungi and Mycobacterium tuberculosis H37Rv. The bioassay results revealed that the majority of the N -benzothiazole-substituted piperazine derivatives exhibited moderate to good bioefficacies with encouraging MICs. The influence of the presence or absence of various electron-withdrawing or -donating functional groups on the aryl acetamide moiety on the different bioassay results is discussed.
本研究采用简单高效的方法合成了 11 种 N-苯基和 11 种 N-苯并噻唑基-2-(4-(2,3,4-三甲氧基苄基)哌嗪-1-基)乙酰胺。测试了这 22 种新型化合物对两种革兰氏阳性菌、三种革兰氏阴性菌、两种真菌和结核分枝杆菌 H37Rv 的体外生物效力。生物测定结果表明,大多数 N-苯并噻唑取代的哌嗪衍生物具有中等至良好的生物效力,其 MIC 值令人鼓舞。本文讨论了芳基乙酰胺分子上是否存在各种吸电子或供电子官能团对不同生物测定结果的影响。