| abstract |
The compounds are of the general formula wherein R 1 represents an alkyl or cycloalkylmethyl group, X 1 is a hydrogen or halogen atom, or an alkoxy group, or alternatively OR 1 and X 1 together represent a group of formula -OCH 2 O-, -O (CH 2) 2-, -O ( CH2) 3-, -O (CH2) 2O- or -O (CH2) 3O-, X2 represents a hydrogen atom or an amino group, X3 is a hydrogen or halogen atom and R2 is a hydrogen atom, an alkyl group, a phenylalkyl group or a group of the general formula - (CH 2) nCO-Z in which n denotes an integer from 1 to 6 and Z represents a 1-piperidyl group. The invention also relates to the therapeutic administration of these compounds. |