A convenient synthesis of bifunctional sulfonamide-amide derivatives was reported. Amide coupling of 4-methyl benzoic acid 1 followed by reaction with chlorosulfonic acid produce ethyl-4-(3-(chlorosulfonyl)-4-methylbenzoyl)piperazine-1-carboxylate 4. The resulted compound on further treatment with various anilines produces the title sulfonamide-amide derivatives 5a-n. The configurations of these compounds were established by elemental analysis, IR, $^1H$ NMR, mass spectra, and by their preparation from the corresponding 4-methyl benzoic acid 1 and chlorosulfonic acid. All these new compounds demonstrate significant in vitro antibacterial and antifungal activities against all bacterial and fungal strains.
报道了一种方便的双功能
磺胺酰胺衍
生物的合成方法。首先通过4-甲基
苯甲酸1的酰胺偶联反应,再与
氯磺酸反应,生成乙基-4-(3-(
氯磺酰基)-4-甲基苯甲酰基)
哌嗪-1-
羧酸酯4。所得化合物进一步与各种
苯胺反应,生成目标
磺胺酰胺衍
生物5a-n。这些化合物的结构通过元素分析、红外光谱、
$^1H$核磁共振、质谱以及从相应的4-甲基
苯甲酸1和
氯磺酸制备得到确认。所有这些新化合物均显示出显著的体外抗菌和抗真菌活性,对所有细菌和真菌株有效。