Patent ID: 6849658

Claim:
Biaromatic compounds connected by a propynylene or ailenylene bond, corresponding to the following formula (I): in which: Ar represents a radical R 1 represents —CH 3 , —CH 2 —O—R 6 , —OR 6 or —COR 7 , R 2 and R 3 , taken together, form a 5- or 6-membered ring interrupted by an oxygen or sulphur atom, said ring being optionally substituted by at least one methyl R 4 represents H, halogen, linear or branched C 1 -C 20 alkyl, —OR 8 , a polyether radical or aryl, R 5 represents H, a halogen, linear or branched C 1 -C 20 alkyl or an —OR 8 radical, R 6 represents H, lower alkyl or a —COR 9 radical, R 7 represents H, lower alkyl, or —OR 10 , R 8 represents H, lower alkyl or —COR 9 , R 9 represents lower alkyl, R 10 represents H, C 1 -C 20 alkyl, which can be linear or branched, alkenyl, mono- or polyhydroxyalkyl, optionally substituted aryl or aralkyl, or a sugar residue, r′ and r″ represent H, lower alkyl, mono- or polyhydroxyalkyl, optionally substituted aryl, or an amino acid or sugar residue or, taken together with the nitrogen atom, form a heterocycle, X represents a divalent radical, which, from right to left or vice versa, has the formula: R 11 and R 12 are hydrogen, and the salts of the compounds of formula (I), when R 1 represents a carboxylic acid functional group, and the optical and geometrical isomers of the compounds of formula (I).