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US 7,009,069 B2Granted
Intermediates for use in retinoid synthesis
AssigneeCentre National de la Recherche Scientifique (CNRS)
InventorsAlain Valla, Dominique Cartier, Roger Labia, Pierre Jean-Paul Potier
Life of this patent
Estimating the term…
Abstract
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.
Claims1
A compound of the formula:
- or an ethyl ester analog thereof.
Dependencies are inferred from the claim text.