Compounds of the formula: ##SPC1## Wherein R.sup.1 is an aryl group which may be substituted, R.sup.2 is hydrogen or a lower alkyl group having 1 to 4 carbon atoms and n is 1 or 2, or derivatives at the carboxyl function thereof, are useful as medicines such as antipyretics, analgesics and anti-inflammatory agents.
式为:##
SPC1##的化合物,其中R.sup.1是可能被取代的芳基基团,R.sup.2是氢或具有1至4个碳原子的低碳基基团,n为1或2,或其羧基功能衍
生物,可用作药物,如退烧药,
镇痛药和抗炎药。