2-[3-(4-chloro/ethyl phenyl)propan-3-one]-5-(substituted phenyl)-1,3,4-oxadiazoles: synthesis and biological evaluation.

In the present investigation, two novel series of 2-[3-(4-chlorophenyl)propan-3-one]-5-(substituted phenyl)-1,3,4-oxadiazole and 2-[3-(4-ethylphenyl)propan-3-one]-5-(substituted phenyl)-1,3,4-oxadiazole were synthesized and tested for their antiinflammatory, analgesic, ulcerogenic and antibacterial actions. A fair number of compounds were found to have very good antiinflammatory activity in carrageenan induced rat paw edema test, while a few compounds showed significant analgesic activity in acetic acid induced writhing test. The newly synthesized compounds showed very low ulcerogenic action and moderate antibacterial action.