Synthesis and Biological Evaluation of New 2-Azetidinones with Sulfonamide Structures
作者:Oana Dragostin、Florentina Lupascu、Cornelia Vasile、Mihai Mares、Valentin Nastasa、Ramona Moraru、Dragos Pieptu、Lenuta Profire
DOI:10.3390/molecules18044140
日期:——
New series of N-(arylidene)hydrazinoacetyl sulfonamides 4a1–6, 4b1–6 and N-(4-aryl-3-chloro-2-oxoazetidin-1-yl)aminoacetyl sulfonamides 5a1–6, 5b1–6 were synthesized. The structures of the new derivatives was confirmed using spectral methods (FT-IR, 1H-NMR, 13C-NMR). The antibacterial activities of these compounds against Gram positive (Staphyloccoccus aureus ATCC 6583, Staphyloccoccus epidermidis ATCC 12228, Enterococcus faecalis ATCC 25912) and Gram negative (Klebsiella pneumoniae CIP 53153, Proteus vulgaris CIP 104989, Citrobacter freundii CIP 5732, Enterobacter cloacae CIP 103475, Escherichia coli ATCC 25922, Pseudomonas aeruginosa CIP 82118) bacterial strains were evaluated using the broth micro-dilution method. Compound 4a2 displayed the highest antibacterial activity, especially against Staphyloccoccus epidermidis, Enterococcus faecalis and Pseudomonas aeruginosa. The antioxidant potential of the synthesized compounds was also investigated according to ferric reducing power, total antioxidant activity and DPPH radical scavenging assays. All tested compounds showed excellent antioxidant activity in comparison with sulfadiazine and sulfisoxazole which were used as parent sulfonamides. Moreover, some of them showed an antioxidant activity comparable with that of ascorbic acid. In general, the compounds designed based on a sulfadiazine skeleton (compounds 4a1–6, 5a1–6) are more active than those obtained from sulfisoxazole (compounds 4b1–6, 5b1–6), and the N-(arylidene)hydrazinoacetyl sulfonamide derivatives 4a1–6, 4b1–6 are more active than their azetidionone analogues 5a1–6, 5b1–6.
合成了一系列新的 N-(芳基亚甲基)肼基乙酰磺酰胺 4a1-6, 4b1-6 和 N-(4-芳基-3-氯-2-氧代氮杂环丁烷-1-基)氨基乙酰磺酰胺 5a1-6, 5b1-6。利用光谱方法(傅立叶变换红外光谱、1H-NMR、13C-NMR)确认了新衍生物的结构。这些化合物对革兰氏阳性菌(金黄色葡萄球菌 ATCC 6583、表皮葡萄球菌 ATCC 12228、粪肠球菌 ATCC 25912)和革兰氏阴性菌(肺炎克雷伯氏菌 CIP 53153、使用肉汤微稀释法评估了肺炎克雷伯菌 CIP 53153、普通变形杆菌 CIP 104989、自由柠檬酸杆菌 CIP 5732、泄殖腔肠杆菌 CIP 103475、大肠杆菌 ATCC 25922、铜绿假单胞菌 CIP 82118)和革兰氏阴性细菌菌株。化合物 4a2 的抗菌活性最高,尤其是对表皮葡萄球菌、粪肠球菌和铜绿假单胞菌。此外,还通过铁还原力、总抗氧化活性和 DPPH 自由基清除实验研究了合成化合物的抗氧化潜力。与磺胺类药物的母体磺胺嘧啶和磺胺异噁唑相比,所有测试化合物都表现出卓越的抗氧化活性。此外,其中一些化合物的抗氧化活性与抗坏血酸相当。一般来说,以磺胺嘧啶为骨架设计的化合物(化合物 4a1-6、5a1-6)比以磺胺异噁唑为骨架设计的化合物(化合物 4b1-6、5b1-6)更具活性,而 N-(亚芳基)肼基乙酰磺酰胺衍生物 4a1-6、4b1-6 比氮杂环丁酮类似物 5a1-6、5b1-6 更具活性。