Patent EP-2248515-A1 (EP)
Inventor: FADLI AZIZ
IPC: A61K8/49
Filed: 2010-04-28
Abstract: Use of at least one compounds (A) comprising leuco type compound having pyrazolo[1,5-a]pyridine structure (I), azomethine type dyes having pyrazolopyridine structure (II) and their mesomeric forms, isomers, tautomers, addition salts with an acid or solvates, for the dyeing of keratin fibers, is claimed. Use of at least one compounds (A) comprising leuco type compound having pyrazolo[1,5-a]pyridine structure of formula (I), azomethine type dyes having pyrazolopyridine structure of formula (II) and their mesomeric forms, isomers, tautomers, addition salts with an acid or solvates, for the dyeing of keratin fibers, is claimed. Z 1>S, SO or SO 2(when R 1>is methyl), O or NR 6>(when Z 1>is NR 6>, then R 1>and R 6>together with N form optionally saturated 5-8 membered heteroaryl (optionally substituted)); R 1>, R 6>H, 1-10C alkyl (optionally substituted and the substituent optionally carrying optionally saturated, 5-8 membered (hetero)aryl, which is optionally substituted) or optionally saturated 5-8 membered (hetero)aryl; R 2>-R 5>H, optionally substituted 1-4C alkyl, NH 2, NHR 1>0>, NHR 1>1>R 1>2>, OH or OR 9>; either R 9>-R 1>2>1-6C alkyl (optionally substituted); or NR 1>1>R 1>2>optionally saturated 5-8 membered heteroaryl (optionally substituted and containing heteroatoms or groups comprising N, O, S, SO 2or CO); at least two of R 2>-R 5>together with adjacent radicals : (hetero)cycle (optionally substituted and saturated); n : 0-3; U 1>CR or N; R : 1-4C alkyl or 1-4C alkoxy (both optionally substituted by OH), H, or (di)alkyl(1-4C)amino (in which alkyl is optionally substituted by OH); X : OH or NR1aR2a; R1a, R2a : H, 1-6C alkyl (optionally substituted by one or more OH, 1-2C alkoxy, amino, (di)alkyl(1-4C)amino) or phenyl (optionally substituted by one or more OH, amino or 1-2C alkoxy); either Y 1>OH, 1-4C alkyl, 1-4C hydroxyalkyl, halo (preferably Cl, I, F or Br), O (substituted by 1-4C alkyl, aryl or heteroaryl (both optionally substituted by one or more OH) or NR2aR3a); or two Y 1>radicals carried by two adjacent carbon atoms together with the carbon atoms to which they are attached : optionally saturated, aromatic or nonaromatic, 5-6 membered cyclic group or heterocyclic group, preferably benzene ring, pyrrole ring, pyrrolidine ring, pyrazole ring, furan ring, pyrrolidine ring, morpholine ring or imidazole ring, optionally substituted by one or more 1-4C alkyl; either R2a, R3a : H, 1-4C alkylcarbonyl (optionally substituted by a quaternary ammonium group such as trialkylammonium group, or by cationic or non cationic nitrogen containing heterocycle such as imidazole group, thiazole group, pyridine group, piperidine group, pyrrolidine group, pyrimidine group, pyrazine group, imidazolium group, pyridinium group, thiazolium group, pyrrolidinium group, piperidinium group, or pyrimidinium group (all optionally substituted by one or more 1-4C alkyl), aminocarbonyl, 1-6C alkyl (optionally substituted by one or more OH, 1-2C alkoxy, amino or (di)alkyl-1-2C amino) or phenyl (optionally substituted by one or more OH, 1-2C alkoxy or amino)); or NR2aR3a : optionally saturated 5-7 membered heterocycle, which carbon atoms are replaced by O or N, where the heterocycle is optionally substituted by halo, amino, (di)alkyl-1-4C amino, OH, carboxy, (di) carboxamido, 1-2C alkoxy, 1-4C alkyl (optionally substituted by one or more groups comprising OH, amino, (di)alkylamino, alkoxy, carboxy or sulfonyl); and V 1>O or NR1a. Provided that: when R1a and R2a is different from H, R1a and R2a together with N form optionally saturated 5-7 membered heterocycle, which carbon atoms are replaced by O or N, where the heterocycle is optionally substituted by halo, amino, (di)alkyl1-4C amino, OH, carboxy, carboxamido, 1-2C alkoxy, 1-4C alkyl (optionally substituted by one or more groups comprising OH, amino, (di)alkylamino, alkoxy, carboxy or sulfonyl); when X is NHR1a, U 1>is CR, and R is alkoxy, then the X and U 1>together forms 6 membered ring of type morpholine (optionally substituted by one or more 1-4C alkyl); and when V 1>is NR1a, U 1>is CR and R is alkoxy, then V 1>and U 1>together form 6 membered ring of type morpholine (optionally substituted by one or more 1-4C alkyl). Independent claims are included for: (1) composition comprising, in a medium, at least one compound (A); (2) compounds (A) comprising leuco type compound having pyrazolo[1,5-a]pyridine structure (I), azomethine type dyes having pyrazolopyridine structure (II), where (A) excludes (4-imino-cyclohexa-2,5-dienylidene)-(2-methoxy-pyrazolo[1,5-a]pyridin-3-yl)-amine; and (3) multi-compartment device or kit with several compartments, comprising a first compartment containing (I); and a second compartment containing an oxidizing agent, and optionally (II) and an alkaline agent. [Image].