SYNTHESIS AND ANTIMICROBIAL INVESTIGATION OF THIAZOLINOALKYL-4(1H)-PYRIDONES

A number of thiazolinoalkyl-4(1H)-pyridones have been synthesized using 4-pyrone derivatives with cysteamine HCl, and their antibacterial and antifungal activities have been tested. Their chemical structures have been proved by means of their IR, H-1-NMR, mass spectroscopic data and by elemental analysis. investigation of antimicrobial activity of compounds was done by tube dilution and disk techniques using bacteria (Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923, Pseudomonas aeruginosa ATCC 27853, Streptococcus faecalis RSKK 10541) and yeast-like fungi (Candida parapsilosis, C albicans, C pseudotropicalis, C stellatoidea). A significant inhibitory effect was recorded for many compounds against C albicans (7a, c, d; minimal inhibitory concentration (MIC) = 12.5-25 mu g/ml), S aureus ATCC 25923 (4c, 7a; MIC = 25 mu g/ml), P aeruginosa ATCC 27923 (7a; MIC = 25 mu g/ml), S faecalis RSKK 10541 (4c; MIC = 25 mu g/ml), C pseudotropicalis (4d, 6d, 7c; MIC = 25 mu g/ml) and C stellatoidea (4d; MIC = 25 mu g/ml).