The synthesis of a series of 3-[5-(substituted aryl)-1, 3, 4-oxadiazol-2-yl]-1-(biphenyl-4-yl) propan-1-ones derived from 4-oxo-4-(biphenyl-4-yl) butanoic acid (fenbufen) is described. The structures of these compounds were supported by IR, 1H NMR, mass spectrometric data and elemental analysis. These compounds were tested for their antiinflammatory, analgesic, ulcerogenic and lipid peroxidation actions. A few compounds were found to have very ...