Adir Et Compagnie

Adir Et Cie

Patrick Ducrey

Guillaume Le Baut

Jean-Daniel Brion

Sylvie Piessard-Robert

Genevieve Seurre

Claude Cudennec

Compounds of general formula (I): ##STR1## in which: R denotes a hydrogen atom, a halogen atom or a hydroxy, lower alkyl, lower alkyloxy, carboxyl, (lower alkyloxy)carbonyl, (lower arylalkyloxy)carbonyl, aminocarbonyl, (lower mono- or dialkyl)aminocarbonyl or (lower arylalkyl)aminocarbonyl group, an aminocarbonyl group N-substituted with a heterocyclic radical, or a thio, (lower alkyl)thio, sulfonyl or (lower alkyl)sulfonyl group,

New heteroarotinoid compounds

Compounds of general formula (I): ##STR1## in which: R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be identical or different, denote a hydrogen atom, a halogen atom or a lower alkyl, lower alkenyl, lower alkyloxy or lower alkenyloxy group, optionally substituted with one or more halogen atoms,

Triene compounds having a chromene structure

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Patrick Ducrey