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1. A method for preparing cosmetic compositions having anti-ageing and/or depigmenting properties, comprising adding to said compositions compounds of general formula Iin which
n and m are equal to 0 or 1, their sum always being equal to 1, R1 and R2, which may be identical or different, represent
hydrogen atoms,halogen atoms selected from fluorine, chlorine, bromine or iodine,linear or branched alkyl groups comprising from 1 to 10 carbon atoms, in particular the methyl, ethyl, isopropyl groups, optionally substituted with one or more halogens selected from fluorine, chlorine, bromine or iodine, with a —CF3 group, with a hydroxy,—OH groups,linear or branched alkoxy groups comprising from 1 to 10 carbon atoms, in particular methoxy, ethoxy, optionally substituted with one or more halogens selected from fluorine, chlorine, bromine or iodine, and in particular the trifluoromethoxy group —OCF3,phenoxy groups —OPh,aryloxy groups —OAr in which Ar represents an aromatic group comprising from 6 to 12 carbon atoms optionally substituted with one or more halogen atoms selected from fluorine, chlorine, bromine, or optionally substituted with one or more —OH groups in free or protected form, and in particular protected in the form of —OMes group, —OTHP group of formulagroup derived from ethylene glycol of formulain whichδ varies from 1 to 12,Ra represents a hydrogen or a linear or branched alkyl group comprising from 1 to 6 carbon atoms,Rc represents a linear or branched alkyl group with 1 to 10 carbon atoms,group derived from propylene glycol of formula,in whichδ′ varies from 1 to 5,Ra and Rc have the meanings stated above, group derived from a glycoside compound that may be α- or β-furanose or α- or β-pyranose,siloxy group of formula —OSi(Ra)3 in which Ra has the meanings stated above,—OSitBdPh group of formulaor —OSitBdM group of formula, benzyloxy groups —OCH2Ph, alkenyl groups comprising from 2 to 10 carbon atoms, linear or branched and comprising at least one C═C double bond, acyloxy groups comprising from 2 to 10 carbon atoms, derived from carboxylic acids, —OTHP groups of the above formula, —OMes groups, groups derived from ethylene glycol of formulain whichδ varies from 1 to 12,Ra represents a hydrogen or a linear or branched alkyl group comprising from 1 to 6 carbon atoms,Rc represents a linear or branched alkyl group with 1 to 10 carbon atoms,
groups derived from propylene glycol of formula,in whichδ′ varies from 1 to 5,Ra and Rc have the meanings stated above,
—OH groups optionally coupled to glycoside compounds that may be α- or β-furanose or α- or β-pyranose, siloxy groups of formula —OSi(Ra)3 in which Ra has the meanings stated above, —OSitBdPh groups of formula —OSitBdM groups of formula,said R1 and R2 optionally forming a ring comprising 3 carbon atoms, said ring having the following formulain whichR1a, R1b, R2a and R2b, which may be identical or different, represent
hydrogen atoms, halogen atoms selected from fluorine, chlorine, bromine or iodine, linear or branched alkyl groups comprising from 1 to 10 carbon atoms, in particular the methyl, ethyl, isopropyl groups, optionally substituted with one or more halogens selected from fluorine, chlorine, bromine or iodine, with a —CF3 group, with a hydroxy,provided that R3 is in this case a hydroxy group —OH,
R3 and R4, which may be identical or different, represent
hydrogen atoms,halogen atoms selected from fluorine, chlorine, bromine,linear, branched or cyclic alkyl groups comprising from 1 to 10 carbon atoms, in particular the methyl, ethyl, isopropyl groups, optionally substituted with one or more halogens selected from fluorine, chlorine, bromine or iodine, with a —CF3 group, with a hydroxy,hydroxyl groups —OH,linear or branched alkoxy groups comprising from 1 to 10 carbon atoms, in particular the methoxy, ethoxy, isopropoxy, tert-butoxy groups, optionally substituted with one or more halogens selected from fluorine, chlorine, bromine or iodine, and in particular the trifluoromethoxy group —OCF3,benzyloxy groups,an alkenyloxy group comprising from 2 to 10 carbon atoms, linear or branched and comprising at least one C═C double bond,an alkynyloxy group comprising from 2 to 10 carbon atoms, linear or branched and comprising at least one C≡C triple bond,—OTHP groups of formula substituted —OTHP groups of the following formulain whichx is equal to 0 or 1, y varies from 0 to 4,Rb is a hydrogen or an acetyl —C(O)—CH3,
groups derived from ethylene glycol of formulain whichδ varies from 1 to 12,Ra represents a linear or branched alkyl group comprising from 1 to 6 carbon atoms,Rc represents a linear or branched alkyl group with 1 to 10 carbon atoms,
groups derived from propylene glycol of formulain whichδ′ varies from 1 to 5,Ra and Rc have the meanings stated above,
—OH groups optionally coupled to a glycoside compound, which may be an α- or β-furanose or an α- or β-pyranose, a siloxy group of formula —OSi(Ra)3 in which Ra has the meanings stated above, —OSitBdPh of formula —OSitBdM of formula, R5 represents
a hydrogen atom,a halogen atom selected from fluorine, chlorine, bromine,a linear, branched or cyclic alkyl group comprising from 1 to 10 carbon atoms, in particular a methyl, ethyl, isopropyl group, optionally substituted with one or more halogens selected from fluorine, chlorine, bromine or iodine, with a —CF3 group, with a hydroxy,an alkenyl group comprising from 2 to 6 carbon atoms, linear or branched and comprising at least one C═C double bond,an alkynyl group comprising from 2 to 6 carbon atoms, linear or branched and comprising at least one C≡C triple bond,a phenyl group optionally substituted with a halogen atom, a —CF3 group, a linear or branched alkyl group comprising from 1 to 10 carbon atoms, a linear or branched alkoxy group comprising from 1 to 10 carbon atoms, a hydroxyl group —OH,
a linear or branched alkoxy group comprising from 1 to 10 carbon atoms, in particular the methoxy, ethoxy, isopropoxy, tert-butoxy groups, optionally substituted with one or more halogens selected from fluorine, chlorine, bromine or iodine, and in particular the trifluoromethoxy group —OCF3,a benzyloxy group,a phenoxy group,a thiophenyl group,an acyloxy group comprising from 2 to 10 carbon atoms, linear or branched,an —OTHP group of formula a substituted —OTHP group of the following formulain whichx is equal to 0 or 1, y varies from 0 to 4,Rb is a hydrogen or an acetyl —C(O)—CH3,
an —OSO2Ro group in which Rc is an alkyl group comprising from 1 to 6 carbon atoms, in particular methyl or ethyl, or an aromatic group comprising from 6 to 18 carbon atoms, optionally substituted with one or more halogen atoms, hydroxy or alkoxy group, nitro, an —OSO3M group in which M represents an Na+ or K+ ion, a group derived from ethylene glycol of formulain whichδ varies from 1 to 12,Ra represents a linear or branched alkyl group comprising from 1 to 6 carbon atoms,Rc represents a linear or branched alkyl group with 1 to 10 carbon atoms,
a group derived from propylene glycol of formulain whichδ′ varies from 1 to 5,Ra and Rc have the meanings stated above,
an —OH group optionally coupled to a glycoside compound, which may be an α- or β-furanose or an α- or β-pyranose, a siloxy group of formula —OSi(Ra)3 in which Ra has the meanings stated above, —OSitBdPh of formula —OSitBdM of formula, —COOH, —CN, —NH2, —NH3+, X− —NRdRe, —NHRdRe+, X− —NHCORf, —NHCOORg, —NO2, Rd, Re representing linear or branched alkyl groups comprising from 1 to 4 carbon atoms, optionally substituted with one or more halogen atoms, or carbon chains interrupted by oxygen or sulphur atoms, benzyl groups optionally substituted with a halogen atom, a hydroxy group, an alkoxy group comprising from 1 to 8 carbon atoms, Rf represents a linear or branched alkyl group containing from 1 to 4 carbon atoms, a phthalimido group (in this case NH is replaced with N), a benzyl group optionally substituted with a halogen atom, a hydroxy group, an alkoxy group and in particular substituted with the methoxy group in the para position, Rg represents a linear or branched alkyl group comprising from 1 to 4 carbon atoms, optionally substituted with one or more halogen atoms, or a carbon chain interrupted by oxygen or sulphur atoms, a phenyl group, a benzyl group optionally substituted with a halogen atom, a hydroxy group, an alkoxy group and in particular substituted with the methoxy group in the para position,X− representing a halide ion,
a group derived from piperazine, in particularprovided that R3 and R4 do not represent simultaneously —OH groups or groups comprising an oxygen atom bound to the phenyl, said compounds of Formula I being used in racemic form or as a single enantiomer. |
