Patent ID: 8785631

Claim:
An oxazolone derivative of formula (I): wherein R 1 represents an alkyl group of 1 or 2 carbon atoms substituted by a phenyl group, furanyl group, furanylcarbonylamino group or benzoylamino group; a cycloalkyl group of 5 or 6 carbon atoms; a cyclopentenyl group; an alkenyl group of 2 carbon atoms which is substituted by a furanyl group; a phenyl group which is substituted by a phenyl group, methoxy group, propylpiperazinyl group, dimethylaminomethyl group, morpholinylmethyl group or thiazolyl group which may be substituted by a methylpiperazinyl group or morpholinylpiperidinyl group; a naphthyl group; a furanyl group which may be substituted by a methyl group; a thienyl group which may be substituted by a methyl group or ethoxy group; a pyrrolyl group which may be substituted by a methyl group; a pyridinyl group which may be substituted by a hydroxyl group; a piperidinyl group which may be substituted by an ethoxycarbonyl group, propoxycarbonyl group or furanylcarbonyl group; a pyrazinyl group; an isoxazolyl group which may be substituted by a methyl group; a benzothiazolyl group; a benzodioxolyl group; a tetrahydrobenzofuranyl group; an indolyl group; or a benzothienyl group; and ring A represents an unsubstituted cyclohexylidene group.