| abstract |
Aromatic benzopyrannyl and benzothiopyrannyl compounds, in which n is 0 or 1, X represents -O-, -S-, -S- or -S-, R 'represents H, Oh, alkoxy, acyloxy or a radical NH2, R' ' represents H or alkoxy, or R 'and R' 'taken together form an OXO, methano, or hydroxyimino radical and the salts of said compounds of formula (1) as well as their geometric and optical isomers. Use in the phramaceutical and cosmetic field. |