Patent ID: 7351267
Filing Date: 2008-04-01
Classification: A61K,A61Q,C07D,C09B

Abstract:
1. A symmetrical cationic diazo compound chosen from those of formula (I) below, their resonance forms, and their acid addition salts and their solvates: wherein: the radicals R 1 , which are identical or not, are chosen from: optionally substituted C optionally substituted phenyl radicals; and optionally substituted benzyl radicals; the radicals R 2 , which may be identical or different, are chosen from: optionally substituted C e is an integer from 0 to 2; when e is less than 2, one or more unsubstituted carbon atom(s) of the heterocycle carry a hydrogen atom, the radicals R 3 , which may be identical or different, are chosen from: optionally substituted C C C alkoxycarbonyl groups (RO—CO—) wherein R is chosen from C alkylcarbonyloxy radicals (RCO—O—) wherein R is chosen from C alkylcarbonyl radicals (R—CO—) wherein R is chosen from C amino groups; amino groups substituted by one or two identical or different C alkylcarbonylamino group (RCO—NR′—) wherein the radical R is chosen from C aminocarbonyl group ((R) ureido groups (N(R) aminosulphonyl group ((R) alkylsulphonylamino groups (RSO thio groups (HS—); alkylthio groups (RS—) wherein the radical R are chosen from C alkylsulphinyl groups (R—SO—) wherein R are chosen from C alkylsulphonyl groups (R—SO nitro groups; cyano groups; and halogen atoms; when m′ is greater than or equal to 2, two adjacent radicals R m′ is an integer from 0 to 4; when m′ is less than 4, then one or more unsubstituted carbon atom of the aromatic ring carry a hydrogen atom; W 1 radicals, which are identical, are chosen from: hydrogen, halogen atoms chosen from bromine, chlorine and fluorine, —NR —NR the radicals R 1 , which may be identical or different, are chosen from: optionally substituted C optionally substituted phenyl radicals; and optionally substituted benzyl radicals; L, a non-cationic linker connecting the two identical azo chromophores, is chosen from: covalent bonds; optionally substituted C optionally substituted phenyl radicals; the electroneutrality of the compound of formula (I) being ensured by at least one identical or non-identical, cosmetically acceptable anions An.