Synthesis and in Vitro Antimicrobial Activity of Some Pyrazolyl-1-carboxamide Derivatives
作者:Essam Mohamed Sharshira、Nagwa Mohamed Mahrous Hamada
DOI:10.3390/molecules16097736
日期:——
pyrazole-1-carboxamides were obtained by treatment of chalcones with semicarbazide hydrochloride in dioxane containing sodium acetate/acetic acid as a buffer solution. N-acetyl derivatives of pyrazole-1-carboxamides were isolated in good yields either by treatment of the carboxamide derivatives with acetic anhydride or refluxing chalcones with semicarbazide in ethanol containing few drops of acetic acid to give
通过在含有乙酸钠/乙酸作为缓冲溶液的二恶烷中用氨基脲盐酸盐处理查耳酮得到一系列 3,5-二取代的吡唑-1-甲酰胺。通过用乙酸酐处理甲酰胺衍生物或在含有几滴乙酸的乙醇中用氨基脲回流查尔酮以得到相应的腙,以良好的产率分离吡唑-1-甲酰胺的 N-乙酰基衍生物。随后用乙酸酐处理腙得到所需的N-乙酰基吡唑-1-甲酰胺衍生物。当查耳酮与含有几滴乙酸的二恶烷回流时,分离出 4,5-二氢吡唑-1-甲酰胺,随后使用在二恶烷中的 5% 次氯酸钠将其氧化,得到吡唑-1-甲酰胺。通过元素分析和光谱方法确认了分离化合物的结构。测试分离的化合物的抗微生物活性。