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d-Galactose-conjugated pyrimidine thioureas as potent antimicrobial agents: rapid green synthesis, structure-activity relationships and molecular modelling
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DOI：10.1039/d6md00026f.png)
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Abstract
En 中文
A series of d-galactose-conjugated pyrimidine-based thioureas 8a-l was efficiently synthesized using an environmentally benign ionic liquid-microwave protocol. Optimal conditions employing [BMIM][BF4] under microwave irradiation (100 W) afforded excellent yields (up to 96%) within 60 s, with the ionic liquid showing good recyclability. The synthesized compounds were evaluated for antibacterial and antifungal activities against a broad panel of pathogenic microorganisms. Several derivatives exhibited potent antimicrobial effects, with MIC values comparable to or superior to reference drugs. Structure-activity relationship analysis revealed that ortho-hydroxyl substitution and synergistic hydroxyl/methoxy patterns significantly enhanced biological activity. Among the series, compound 8l (2-OH-4-OMe) emerged as the most potent and broad-spectrum candidate. In silico ADMET analysis suggested favourable drug-like characteristics for non-oral antimicrobial applications. Molecular docking studies supported the experimental results, demonstrating strong and stable binding of compound 8l within bacterial and fungal enzyme active sites. Overall, these findings highlight d-galactose-conjugated pyrimidine thioureas as promising antimicrobial scaffolds.
Keywords:
DRUG
RATIONALIZATION
ANTIOXIDANT
PREDICTION
INHIBITORS
CHALCONES
TOXICITY
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