N-aminobutyl-n-phenylarylamide derivatives, their preparation and their application in therapy

Abstract From the Canadian patent

compound of formula (I), (I) in which:, X denotes hydrogen, a halogen a trifluoromethyl group, a, C1-C6 alkyl group or a C1-C4 alkoxy group; R1 denotes a linear or branched C2-C8 alkyl group a C3-C5, cycloalkyl group or a cycloalkylmethyl group in which the cycloalkyl moiety has from 3 to 5 carbon atoms; R2 denotes hydrogen or a C1-C4 alkyl group; R3 denotes hydrogen, a C1-C4 alkyl group an optionally, substituted phenylalkyl group or a pyridylalkyl group; or R2 and R3 denote, together with the nitrogen to which they are attached, a pyrrolidinyl, piperidyl, morpholinyl perhydrothiazinyl, piperazinyl or 4-methylpiperazinyl ring; and, Ar denotes a phenyl group, optionally having from one to …