Biaromatic compounds and pharmaceutical and cosmetic...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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Details

C514S438000, C514S456000, C514S457000, C549S013000, C549S049000, C549S398000, C544S145000, C544S147000, C546S202000

Reexamination Certificate

active

06849658

ABSTRACT:
The invention concerns bi-aromatic compounds of formula (I) in which Ar represents (a), Z being O or S, R1is CH3, —CH2—O—R6, —OR6or —COR7; R2is —OR8, —SR8or a polyether radical if in the latter case R4is C1-C20alkyl and is in ortho or meta position relative to X—Ar; R3is alkyl or R2and R3together form a cycle optionally interrupted by O or S; R4is aryl radical; R5is H, halogen, C1-C20alkyl or —OR8; R6is H, alkyl or —COR9; R7is H, alkyl, —N(r′)(r″) or —OR10; R8is H, alkyl or —COR9; R9is alkyl; R10is H, C1-C20alkyl, alkenyl, monohydroxyalkyl or polyhydroxyalkyl, aryl or aralkyl or a sugar residue, r′ and r″ are H, alkyl mono- or polyhydroxyalkyl, aryl, an amino acid or sugar residue or together form a heterocycle, X represents a radical of formula (d) or (e) in which R11is H or —OR6; R12is H or alkyl; or R11and R12form an oxo radical, and the salts, optical and geometrical isomers of the compounds of formula (I).

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