A series of isoxazolyl-5H-dibenzo [b,f] azepine-5-carboxamides (3a-i) were synthesized using N-[4-(3-arylacryloyl) phenyl]-5H-dibenzo [b, f] azepine-5-carboxamide and hydroxylamine hydrochloride in presence of ethanol and potassium hydroxide. The structures were confirmed by their IR, (1)H and (13)C NMR, Mass and CHN analysis data. All the derivatives have been evaluated for their antibacterial activity by cup plate method and antitubercular activity by microbroth dilution method. Some of the derivatives have shown moderate to good biological activity.