| abstract |
An aromatic benzopyranyl or benzothiopyranyl compound of the formula <IMAGE> (I) wherein n is 0 or 1, X represents <IMAGE> R' represents H, OH, acyloxy or NH2, R'' represents H or alkoxy or R' and R'' taken together form an oxo, methano or hydroxyimino radical, R8 represents H, <IMAGE> R9 represents H, alkyl, mono or polyhydroxyalkyl, aryl, aralkyl, a residue of a sugar or <IMAGE> p equals 1, 2 or 3, r' and r'' represent H, alkyl, monohydroxyalkyl, polyhydroxyalkyl, aryl, benzyl, the residue of an amino acid or an aminated sugar, or together form a heterocycle, R1, R2, R3 and R4 represents H or lower alkyl, R5, R6 and R7 represent H or methyl or when n=1, R5 and R7 taken together form with the benzene ring a naphthalene ring (R5-R7=-CH=CH-), and the salts of said compounds as well as their geometric and optical isomers. These compounds are useful in pharmaceutical and cosmetic compositions. |