| abstract |
Disclosed are retiferol derivatives of formula (I): wherein X is > C=CH2 or -CH2-; Y and Z are independently of each other hydrogen, fluorine or hydroxy; A is -O(CH2)3-, -(CH2)2-(1,2-C6H4)-, -CH=CH-(1,2-C6H4)-, -C=C-(1,2-C6H4)-, -(CH2)2-CO-, -CH2-O-CO-, -CH2NHCO-, or -CH2NHCOCH2-; R1 is C1-C5-alkyl; R?2 and R3¿ are independently of each other alkyl or perfluoroalkyl; and R4 is hydrogen, hydroxy, C1-C5-alkyl or C1-C5-alkyl or C1-C5-alkoxy; the use of such compounds to treat or present hyperproliferative skin diseases such as psoriasis, basal cell carcinomas, disorders of keratinization and keratosis; neoplastic diseases; disorders of the sebaceous glands such as acne and seborrhoic dermatitis; the use of these compounds in reversing the conditions associated with photodamage, particularly for the oral or topical treatment of the skin damaged through sun exposure, the effects of wrinkling, elastosis and premature ageing, furthermore a process for the manufacture of such compounds as well as pharmaceutical compositions containing such compounds. |