Intermediates for use in retinoid synthesis

摘要

The invention concerns compounds of formula (1) wherein in particular G represents the —N(CH₃)₂—, —N(C₂H₅)₂— group or N-pyrrolidine: n is an integer equal to 1 or 2: R₁, R₂ and R₃, independently of one another, represent a hydrogen atom or a methyl group, the successive unsaturated units capable of being moreover identical or different, provided that at least one of the substituents R₁, R₂ and R₃ is different from H; and Y₁ and Y₂ represent each a —COOCH₃ group or a —COOC₂H₅ group.