| abstract |
A compound of formula (I) in which: - R1, R3 and R4 represent, independently of one another, a hydrogen atom, a C1-C8 alkyl radical, a C1-C8 alkoxy radical, an acyloxy radical C1-C8 or a hydroxy radical; - R, R 'and R' 'represent, independently of one another, either one of the meanings given above for R1, R3 and R4, or a halogen atom, or a primary amino radical, secondary or tertiary - A with various meanings. The invention also relates to a process for the preparation of the compounds of formula (I) and of the medicinal and cosmetic compositions containing them, and which can be used in dermatological conditions linked to a disorder of keratinization. |