| 摘要 |
The use of an extract of Myrsine africana (Cape myrtle or African Boxwood) as a colorant precursor in the oxidative coloration of keratinic fibers. Independent claims are included for: (1) An aqueous extract of Myrsine africana; (2) 3-( beta -D-glucopyranosyloxy)-4,5-dihydroxytoluene obtainable from Myrsine africana extract; (3) a composition for the dyeing of keratinic fibers comprising in an appropriate medium and extract of Myrsine africana and a compound of formula (I) as well as its cosmetically acceptable acid or base salts; (4) product of formulae (IIIa), (IIIb) and (IIIc) obtained by reacting (I) with 3-( beta -D- glucopyranosyloxy)-4,5-dihydroxytoluene; (5) a method of oxidation hair dyeing consisting of applying the claimed composition to the hair and revealing the color by oxygen in the air or using and oxidant compound; and (6) a kit with compartments containing the claimed composition and an oxidant composition. R1 = NR4R5; R4, R5 = H, alkyl radical optionally substituted with one or more hydroxy or alkoxy or carboxy or amino or mono- or dialkylamino of which the alkyl radical is similarly optionally substituted, together with the nitrogen to which they are attached a saturated heterocycle of 5-8 links optionally substituted with one or more halogen or hydroxy or alkoxy or carboxy or amino or carboxamido or sulfonamido or mono- or dialkylamino or 1-6C alkyl optionally substituted with one or more of hydroxy or amino or carboxy or mono- or dialkylamino and possibly additionally containing O, S, SO2 or NR; R = H, 1-4C alkyl; R2 = NR6R7; R6, R7 = R4, R5; X-Y = RC-CR', N- CR; R, R' = H, alkyl, amino.
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