Mono- and di-esters of cinnamic acid or of one of his derivatives and of vitamine C, their process of preparation and their use as antioxydants in cosmetic, pharmaceutical or alimentary compositions.

摘要

Mono- and di-esters of cinnamic acid (or one of its derivs.) and vitamin C, of formula (I), are new. R1, R2, R3 = H, OH, alkoxy, fluoroalkoxy or alkylcarbonyloxy; R4 = H or -COR5; R5 = 1-20C alkyl or a gp. of formula (i).