Benzopyran COMPOUNDS AND BENZOTHIOPYRANNYL benzoic, METHOD OF PREPARATION AND USE IN COSMETICS AND HUMAN AND VETERINARY MEDICINE.

摘要

Benzopyran compounds and aromatic benzothiopyrannyl, wherein n is 0 or 1, X represents -O-, -S-, -S- or -S-, R 'represents H, OH, alkoxy, acyloxy or an NH 2 radical, R' ' is H or alkoxy, or R 'and R' 'taken together form an oxo, methano or hydroxyimino and salts of said compounds of formula (1) and their geometric and optical isomers. Use in phramaceutique and cosmetics.