Synthesis and antimicrobial activity of thiazolinomethyl-2(3H)-benzoxazolone derivatives (I)

Article abstract of DOI:10.1016/0223-5234(96)88264-X

A number of thiazolinoalkyl-2(3H)-benzoxazolones have been synthesized by using cyano derivatives of 6-acyl-2(3H)-benzoxazolones with cysteamine HCl. Their antibacterial and antifungal activities have been evaluated. The chemical structures have been proved by means of their IR, ¹H-NMR and mass spectroscopic data and by elemental analysis. The antimicrobial activity of compounds was investigated 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). Inhibitory effects were observed for many compounds against C albicans, eg, compounds 3b and 3c MIC = 25 μg/ml, C pseudotropicalis, eg, compound 3b MIC = 12.5 μg/ml, and P aeruginosa and S faecalis, eg, compound 3c, MIC = 25 μg/ml.