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  • Title: Synthesis and in vitro antimicrobial activity of novel N-(6-chlorobenzo[d]thiazol-2-yl) hydrazine carboxamide derivatives of benzothiazole class.
    Author: Gilani SJ, Khan SA, Siddiqui N, Verma SP, Mullick P, Alam O.
    Journal: J Enzyme Inhib Med Chem; 2011 Jun; 26(3):332-40. PubMed ID: 20807086.
    Abstract:
    In this study, a series of novel 1,2,4-triazolo-[3,4-b]-1,3,4-thiadiazole (6a-g) and 1,3,4-oxadiazole (7a-g, 8) were synthesized from N-(6-chlorobenzo[d]thiazol-2-yl) hydrazine carboxamide derivatives of benzothiazole class. Antimicrobial properties of the title compound derivatives were investigated against one Gram (+) bacteria (Staphylococcus aureus), three Gram (-) bacteria (Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae) and five fungi (Candida albicans, Aspergillus niger, Aspergillus flavus, Monascus purpureus and Penicillium citrinum) using serial plate dilution method. The investigation of antibacterial and antifungal screening data revealed that all the tested compounds showed moderate to good inhibition at 12.5-100 µg/mL in DMSO. It has been observed that triazolo-thiadiazole derivatives are found to be more active than 1,3,4-oxadiazole derivatives against all pathogenic bacterial and fungal strains.
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