| abstract |
A compound of formula (I) its isomers and its salts, in which - R1, R3 and R4 represent, independently of each other, a hydrogen atom, a C1-C8 alkyl radical, a C1- alkoxy radical C8, a halogen atom, a C1-C8 acyloxy radical or a hydroxyl radical; - R 'represents a hydrogen atom or a C1-C6 alkyl radical; - R '' represents an unsaturated group, which is either a polyene chain or a benzene nucleus. The invention also relates to two methods for preparing the compounds of formula (I) as well as the medicinal and cosmetic compositions containing them. The compounds of formula (I) are used for the treatment of dermatological conditions and in ophthalmology. |