Centre National De La Recherche Scientifique

Roger Labia

Pierre Jean-Paul Potier

Alain Valla

Dominique Cartier

The invention concerns compounds of formula (1) wherein in particular G represents the &#x2014;N(CH)&#x2014;, &#x2014;N(CH)-group or N-pyrrolidine: n is an integer equal to 1 or 2: R, Rand R, 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 R, Rand Ris different from H: and Yand Yrepresent each a &#x2014;COOCHgroup or a COOCHgroup.

Intermediates for use in retinoid synthesis

The invention concerns compounds of formula (1) wherein in particular G represents the &#x2014;N(CH)&#x2014;, &#x2014;N(CH)-group or N-pyrrolidine: n is an integer equal to 1 or 2: R, Rand R, 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 R, Rand Ris different from H: and Yand Yrepresent each a &#x2014;COOCHgroup or a &#x2014;COOCHgroup.

The invention concerns compounds of formula (1) wherein in particular G represents the &#x2014;N(CH)&#x2014;, &#x2014;N(CH)&#x2014; group or N-pyrrolidine: n is an integer equal to 1 or 2: R, Rand R, 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 R, Rand Ris different from H; and Yand Yrepresent each a &#x2014;COOCHgroup or a &#x2014;COOCHgroup.

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Plogonnec, France

Roger Labia