abstract |
The invention relates to a compound of the formula (I) in which: R 1 , R 2 and R 3 are independently a methoxy group optionally substituted by one or more fluorine atoms; R 4 is a hydrogen atom; R 5 and R 6 are identical and each represent a hydrogen or fluorine atom; A is a cycle selected from the group including aryl and heteroaryl groups, wherein said groups can be substituted. |