| abstract |
A compound of formula (I) or one of its salts ** Formula ** in which: X is a bond and R1 is -H, -halo or -CN; or X is -CH2- and R1 is -H or -C1-3 alkyl; or X is -O- and R1 is -C1-4 alkyl, - (CH2) mCF3, -CHR2CH2OMe, - (CH2) C3-4 n-cycloalkyl, - (CH2) noxetane, -benzyl or -CHR2heteroaryl; wherein the heteroaryl may be further substituted with halo, methyl, ethyl or O; m> = 1 or 2; n> = 0 or 1; R2> = -H, -methyl or -ethyl; and R3> = H or -methyl, provided that the compound of formula (I) or a salt thereof is not 3- (5-chloro-2-oxobenzo [d] oxazol-3 (2H) -yl) acid propanoic acid or 3- (5-chloro-2-oxobenzo [d] oxazol-3 (2H) -yl) -2-methylpropanoic acid |