Synthesis, characterization and anti-inflammatory activity of new 5-(3,4-dichlorophenyl)-2-(aroylmethyl) thio-1,3,4-oxadiaxoles.

Several 5-(3,4-dichlorophenyl)-2-(aroylmethyl)thio-1,3,4-oxadiazoles were synthesized and characterized by elemental analyses, IR and nuclear magnetic resonance spectra. All compounds were evaluated for anti-inflammatory activity by determining their ability to provide protection against carregeenan-induced edema in rat paw. In addition, ulcerogenic activity was determined. The anti-inflammatory data scoring showed that compounds 5e, 5f and 5g, at the dose of 100 mg/kg, exhibited anti-inflammatory activity, which for compound 5f was comparable to that of the reference drug indometacin (CAS 53-86-1).