Use of an extract of Myrsine africana in oxidation dyeing for dyeing keratin fibres

A composition for dyeing keratin fibres by oxidation dyeing comprising, in a medium suitable for dyeing the keratin fibres, at least one extract of Myrsine africana and at least one compound chosen from compounds of formula (I) and cosmetically acceptable acid and base addition salts thereof:

• 12
• wherein:
• R1 is chosen from radicals of NR4R5, wherein R4 and R5, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R4 and R5 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals;
• the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• R2 is chosen from radicals of NR6R7, wherein R6 and R7, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R6 and R7 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals, the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• and
• X—Y is chosen from RC—CR′ and N—CR, wherein R and R′, which may be identical or different, are chosen from a hydrogen atom, alkyl, hydroxyl, and amino radicals.

A composition for the oxidation dyeing of keratin fibres comprising, in a medium suitable for dyeing keratin fibres, at least one dye precursor chosen from compounds of formula (I):

• 17
• wherein:
• R1 is chosen from radicals of NR4R5, wherein R4 and R5, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R4 and R5 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals;
• the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• R2 is chosen from radicals of NR6R7, wherein R6 and R7, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R6 and R7 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals, the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• and
• X—Y is chosen from RC—CR′ and N—CR, wherein R and R′, which may be identical or different, are chosen from a hydrogen atom, alkyl, hydroxyl, and amino radicals;
• and 3-(β-D-glucopyranosyloxy)-4,5-dihydroxytoluene.

A process for oxidation dyeing of keratin fibres comprising applying to the keratin fibres at least one dyeing composition for a colour to be revealed in the presence of atmospheric oxygen or at least one oxidizing agent, wherein the dyeing composition comprises at least one extract of Myrsine africana and at least one compound chosen from compounds of formula (I) and cosmetically acceptable acid and base addition salts thereof:

• 18
• wherein:
• R1 is chosen from radicals of NR4R5, wherein R4 and R5, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R4 and R5 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals;
• the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• R2 is chosen from radicals of NR6R7, wherein R6 and R7, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R6 and R7 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals, the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• and
• X—Y is chosen from RC—CR′ and N—CR, wherein R and R′, which may be identical or different, are chosen from a hydrogen atom, alkyl, hydroxyl, and amino radicals.

A multi-compartment device or multi-compartment dyeing kit comprising a first compartment comprising a dyeing composition and a second compartment comprising an oxidizing composition, wherein the dyeing composition comprises at least one extract of Myrsine africana and at least one compound chosen from compounds of formula (I) and cosmetically acceptable acid and base addition salts thereof:

• 19
• wherein:
• R1 is chosen from radicals of NR4R5, wherein R4 and R5, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R4 and R5 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals;
• the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• R2 is chosen from radicals of NR6R7, wherein R6 and R7, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R6 and R7 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals, the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• and
• X—Y is chosen from RC—CR′ and N—CR, wherein R and R′, which may be identical or different, are chosen from a hydrogen atom, alkyl, hydroxyl, and amino radicals.

A coloured compound obtained in a composition by reacting at least one compound chosen from compounds of formula (I) and cosmetically acceptable acid and base addition salts thereof:

• 20
• wherein:
• R1 is chosen from radicals of NR4R5, wherein R4 and R5, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R4 and R5 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals;
• the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• R2 is chosen from radicals of NR6R7, wherein R6 and R7, which may be identical or different, are chosen from a hydrogen atom and alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals in which the alkyl radical is optionally substituted with at least one radical chosen from hydroxyl, alkoxy, carboxyl, amino, monoalkylamino and dialkylamino radicals;
• or R6 and R7 form, together with the nitrogen atom to which they are attached, a 5- to 8-membered saturated heterocycle, the heterocycle possibly being substituted with at least one entity chosen from halogen atoms, hydroxyl, alkoxy, carboxyl, amino, carboxamido, sulphonamido, monoalkylamino and dialkylamino radicals, and C1-C6 alkyl radicals optionally substituted with at least one radical chosen from hydroxyl, amino, carboxyl, monoalkylamino and dialkylamino radicals, the heterocycle optionally comprising at least one additional hetero atom chosen from O, S, SO2 and NR″, wherein R″ is chosen from a hydrogen atom and C1-C4 alkyl radicals;
• and
• X—Y is chosen from RC—CR′ and N—CR, wherein R and R′, which may be identical or different, are chosen from a hydrogen atom, alkyl, hydroxyl, and amino radicals;
• with a compound of the following formula (II):
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