| 摘要 |
Compounds of the formula WHEREIN X is O, S or NH, Y is -CH2- and R is nitro, benzoyloxy, alkoxycarbonyloxy, N-mono-alkylaminocarbonyloxy, N,N-dialkylaminocarbonyloxy or an N-substituted-aminoalkoxy group, having antimicrobial activity, e.g., against Trichomonas vaginalis.
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