Compounds of the formula I: ** Formula ** in which: n is an integer chosen between 1, 2 and 3； Y represents O； N-OR9, wherein R9 represents H or a saturated hydrocarbon-based aliphatic group； CR10R11, wherein R10 and R11, which may be identical or different, represent H or a saturated hydrocarbon-based aliphatic group； R1, R2, R3 and R4 are independently selected from a hydrogen atom and alkyl； R5 represents Z； R6 represents W； Z represents alkyl optionally substituted with one or more radicals T； alkenyl optionally substituted with one or more T radicals； alkynyl optionally substituted with one or more T radicals； phenyl optionally substituted with one or more T radicals； cycloalkyl optionally substituted with one or more T radicals； monocyclic or bicyclic heteroaryl optionally substituted with one or more T radicals； -alk1-Cy1, wherein alk1 represents alkylene, preferably CH2 and Cy1 represent phenyl optionally substituted with one or more T radicals, or alternatively Cy1 represents cycloalkyl, optionally substituted with one or more T radicals； T being selected from optionally halogenated alkyl； optionally halogenated alkoxy； a halogen atom； and cyano； W represents -XL-CO2R7； -X-L-Tet, in which X and L are as defined below and Tet represents tetrazole； wherein L represents an alkylene, alkenylene or -alk ° -Ar ° - group, in which alk represents alkylene and Ar ° represents phenylene； X represents O； NR8, in which R8 represents H； a group based on saturated aliphatic hydrocarbon； a group -COR 'or -SO2-R', in which R 'takes any of the meanings given below for R7 with the exception of H； or R8 represents an aromatic carbocyclic group； or X represents S (O) m, in which m is chosen between 0, 1 and 2； R7 represents H or alkyl； and pharmaceutically acceptable salts, solvates and stereoisomers thereof, and also mixtures thereof in all proportions.Compuestos de la fórmula I:**Fórmula** en la que: n es un entero elegido entre 1, 2 y 3； Y representa O； N-OR9, en el que R9
