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  • Title: Synthesis and antimicrobial activity of novel 2-thiazolylimino-5-arylidene-4-thiazolidinones.
    Author: Vicini P, Geronikaki A, Anastasia K, Incerti M, Zani F.
    Journal: Bioorg Med Chem; 2006 Jun 01; 14(11):3859-64. PubMed ID: 16488614.
    Abstract:
    New 2-thiazolylimino-5-arylidene-4-thiazolidinones (compounds 4a-j), unsubstituted or carrying hydroxy, methoxy, nitro and chloro groups on the benzene ring, were synthesized and assayed in vitro for their antimicrobial activity against Gram positive and Gram negative bacteria, yeasts and mould. The compounds were very potent towards all tested Gram positive microorganisms (MIC ranging from 0.03 to 6 microg/mL in most of the cases) and Gram negative Haemophilus influenzae (MIC 0.15-1.5 microg/mL), whereas no effectiveness was exhibited against Gram negative Escherichia coli and fungi up to the concentration of 100 microg/mL. The 5-arylidene derivatives showed an antibacterial efficacy considerably greater than that of the parent 2-(thiazol-2-ylimino)thiazolidin-4-one 3, suggesting that the substituted and unsubstituted 5-arylidene moiety plays an important role in enhancing the antimicrobial properties of this class of compounds. The remarkable inhibition of the growth of penicillin-resistant staphylococci makes these substances promising agents also for the treatment of infections caused by microorganisms resistant to currently available drugs.
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