Fluorenyl-hydrazonothiazole derivatives 2–7 were synthesized by the Hantzsch reaction from 2-(9H-fluoren-9-ylidene)hydrazine-1-carbothioamide (1) and the corresponding α-halocarbonyl compounds in THF or 1,4-dioxane solvent. A base catalyst is not necessary for synthesising thiazoles, but it can shorten the reaction time. The antimicrobial properties of all synthesized compounds were screened for multidrug-resistant microorganism strains. The minimum inhibitory concentration of the tested compounds against Gram-positive bacteria and fungi was higher than 256 μg/mL, but several compounds had activity against Gram-positive strains.
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Anusevičius et al. (2024) studied this question.
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