The synthesis of a series of 6 compounds related to 2-(4'-formyl-phenyl)-4H
-1-benzopyran-4-one O-substituted oxime and the results of a study of their
biological activity are reported. The structural assignments of the compou
nds is based upon various spectral data. The prepared compounds were screen
ed for their in vitro antibacterial and antifungal activities. Compound F3
exhibited the best antifungal activity compared with ketoconazole and fluco
nazole.