Compounds of the formula I: in which: n is an integer chosen from 1, 2 and 3; Y represents O; N-OR 9, in which R 9 represents H or a saturated hydrocarbon-based aliphatic group; CR 10 R 11, in which R 10 and R 11, which may be identical or different, represent H or a saturated hydrocarbon-based aliphatic group; R 1, R 2, R 3 and R 4 are independently chosen from a hydrogen atom and alkyl; R 5 represents Z; R 6 represents W; Z represents alkyl optionally substituted by one or more radicals T; alkenyl optionally substituted by one or more radicals T; alkynyl optionally substituted by one or more radicals T; phenyl optionally substituted by one or more radicals T; cycloalkyl optionally substituted by one or more radicals T; monocyclic or bicyclic heteroaryl optionally substituted by one or more radicals T; -alk 1 -Cy 1, in which alk 1 represents alkylene, preferably CH 2 and Cy 1 represents phenyl optionally substituted by one or more radicals T, or alternatively Cy 1 represents cycloalkyl, optionally substituted by one or more radicals T; T being chosen from optionally halogenated alkyl; optionally halogenated alkoxy; a halogen atom; and cyano; W represents -XL-CO 2 R 7; -X-L-Tet, in which X and L are as defined below and Tet represents tetrazole; in which L rèpresents alkylene, alkenylene or -alk°-Ar°-, in which alk° represents alkylene and Ar° represents phenylene; X represents O; NR 8, in which R 8 represents H; a saturated aliphatic hydrocarbon-based group; a group -CO-R' or -SO 2 -R', in which R' takes any of the meanings given below for R 7 with the exception of H; or R 8 represents an aromatic carbocyclic group; or X represents S m, in which m is chosen from 0, 1 and 2; R 7 represents H or alkyl; and the pharmaceutically acceptable salts, solvates and stereoisomers thereof, and also mixtures thereof in all proportions. n is an integer chosen from 1, 2 and 3; Y represents O; N-OR 9, in which R 9 represents H or a saturated hydrocarbon-based aliphatic group; CR 10 R 11, in which R 10 and R 11, which may be identical or different, represent H or a saturated hydrocarbon-based aliphatic group; R 1, R 2, R 3 and R 4 are independently chosen from a hydrogen atom and alkyl; R 5 represents Z; R 6 represents W; Z represents alkyl optionally substituted by one or more radicals T; alkenyl optionally substituted by one or more radicals T; alkynyl optionally substituted by one or more radicals T; phenyl optionally substituted by one or more radicals T; cycloalkyl optionally substituted by one or more radicals T; monocyclic or bicyclic heteroaryl optionally substituted by one or more radicals T; -alk 1 -Cy 1, in which alk 1 represents alkylene, preferably CH 2 and Cy 1 represents phenyl optionally substituted by one or more radicals T, or alternatively Cy 1 represents cycloalkyl, optionally substituted by one or more radicals T; T being chosen from optionally halogenated alkyl; optionally halogenated alkoxy; a halogen atom; and cyano; W represents -XL-CO 2 R 7; -X-L-Tet, in which X and L are as defined below and Tet represents tetrazole; in which L rèpresents alkylene, alkenylene or -alk°-Ar°-, in which alk° represents alkylene and Ar° represents phenylene; X represents O; NR 8, in which R 8 represents H; a saturated aliphatic hydrocarbon-based group; a group -CO-R' or -SO 2 -R', in which R' takes any of the meanings given below for R 7 with the exception of H; or R 8 represents an aromatic carbocyclic group; or X represents S m, in which m is chosen from 0, 1 and 2; R 7 represents H or alkyl; and the pharmaceutically acceptable salts, solvates and stereoisomers thereof, and also mixtures thereof in all proportions.