Synthesis and potent antimicrobial activity of novel coumarylthiazole α-aminophosphonates derivatives.

Autor: Litim, Bilal, Cheraiet, Zinelaabidine, Meliani, Saida, Djahoudi, Abdelghani, Boukhari, Abbes
Zdroj: Molecular Diversity; Apr2022, Vol. 26 Issue 2, p1161-1174, 14p
Abstrakt: Herein, we reported a novel series of α-aminophosphonates derivatives (IV)a–m bearing an important pharmacophore coumarylthiazole moiety. All the new compounds have been synthesized via Kabachnik–Fields reaction under ultrasonic irradiation. The products were obtained in good yield with a simple workup and were confirmed using various spectroscopic methods. All these compounds (IV)a–m were screened for their in vitro for antimicrobial activity against thirteen Gram-negative bacteria and five Gram-positive bacteria and Candida albicans strains. The results showed that all the synthesized compounds exhibited moderate antibacterial activities against both references and multidrug-resistant and antifungal strains. The compound (IV)e showed the highest activities against all pathogens of the tested microbial strains with MIC of 0.125 μg/mL. The compounds (IV)h, (IV)f, (IV)b, and (IV)d exhibited moderate and promising activities with MIC of 0.125 μg/mL. Structure–activity relationship revealed that inhibitory activity of the synthesized compounds is related to the type of the substituted group on phenyl rings, and these results showed that the electron-donating groups at ortho and para positions have a high relationship increasing antimicrobial activities than the electron‐withdrawing groups. These results confirm that coumarylthiazole α-aminophosphonates compounds can be potential antimicrobial drugs candidate. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index