Intermediates for use in retinoid synthesis

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

Reexamination Certificate

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C560S172000

Reexamination Certificate

active

11317200

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, R2and 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, R2and R3is different from H: and Y1and Y2represent each a —COOCH3group or a COOC2H5group.

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