Compounds of the formula: ##SPC1## Are disclosed. In the above formula, R.sub.1 is aryl such as benzene or a heterocycle such as pyridine, isoxazole, or thiazole. The aryl or heterocyclic group R.sub.1 is substituted or unsubstituted. R.sub.2 is hydrogen, lower alkyl, halogen, lower alkoxy, trifluoromethyl and the like. These compounds are useful as anti-inflammatory agents indicated in conditions such as rheumatoid arthritis.