Abstract

In the present investigation, a series of dihydrotriazine derivatives-bearing 5-aryloxypyrazole moieties were synthesized and their structures were confirmed by different spectral tools. The biological evaluation in vitro revealed that some of the target compounds exerted good antibacterial and antifungal activity in comparison with the reference drugs. Among these novel hybrids, compound 10d showed the most potent activity with minimum inhibitory concentration values (MIC) of 0.5 µg/mL against S. aureus 4220, MRSA 3506 and E. coli 1924 strain. The cytotoxic activity of the compounds 6d, 6m, 10d and 10g was assessed in MCF-7 and HeLa cells. Growth kinetics study showed significant inhibition of bacterial growth when treated with different conc. of 10d. In vitro enzyme study implied that compound 10d exerted its antibacterial activity through DHFR inhibition. Moreover, significant inhibition of biofilm formation was observed in bacterial cells treated with MIC conc. of 10d as visualized by SEM micrographs.

Graphic abstract

Twenty-nine target compounds were designed, synthesized and evaluated in terms of their antibacterial and antifungal activities.

中文翻译：

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作为抗菌剂的带有 5-芳氧基吡唑部分的二氢三嗪衍生物的设计、合成和评价

摘要

在本研究中，合成了一系列带有 5-芳氧基吡唑部分的二氢三嗪衍生物，并通过不同的光谱工具确认了它们的结构。体外生物学评价表明，与参比药物相比，部分目标化合物具有良好的抗菌和抗真菌活性。在这些新型杂交体中，化合物10d显示出最有效的活性，对金黄色葡萄球菌4220、MRSA 3506 和大肠杆菌1924 菌株的最小抑制浓度值 (MIC) 为 0.5 µg/mL 。化合物6d , 6m , 10d和10g的细胞毒活性在 MCF-7 和 HeLa 细胞中进行评估。生长动力学研究表明，当用不同浓度处理时，可显着抑制细菌生长。的10D。体外酶研究表明化合物10d通过抑制DHFR发挥抗菌活性。此外，在用 MIC conc 处理的细菌细胞中观察到生物膜形成的显着抑制。的10D的SEM照片的可视化。

图形摘要

设计、合成了 29 种目标化合物，并评估了它们的抗菌和抗真菌活性。