| 摘要 |
The present invention refers to Compound of the formula (I)
wherein
X
is oxygen or sulphur;
R 1
is (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkyl which is substituted by hydroxy, (C 1 -C 4 )-alkoxy, hydroxy-(C 1 -C 4 )-alkoxy, CN, -COOR 6 , -CON(R 6 ) 2 or -N(R 6 ) 2 or is phenyl;
R 2
is hydrogen, methyl or ethyl;
R 3
is hydrogen, (C 1 -C 4 )-alkylsulfonyl, (C 1 -C 4 )-alkylsulfonyl which is substituted by hydroxy, halogen, cyano, (C 1 -C 4 )-alkoxy or -N(R 6 ) 2 or is -SO 2 -CH=CH 2 , -SO 2 N(R 6 ) 2 or -PO(OR 6 ) 2 ; or
R 3
is hydroxy-(C 1 -C 4 )-alkyl if R 4 and R 5 are not hydrogen ;
R 4
is hydrogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkyl which is substituted by hydroxy, (C 1 -C 4 )-alkoxy, or hydroxy-(C 1 -C 4 )-alkoxy ;
R 5
is hydrogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkyl which is substituted by hydroxy, (C 1 -C 4 )-alkoxy or hydroxy-(C 1 -C 4 )-alkoxy ;
R 6
is hydrogen, (C 1 -C 4 )-alkyl or hydroxy-(C 1 -C 4 )-alkyl;
whereas R 3 , R 4 and R 6 are all hydrogen or are different and whereas the compound of the formula (I) wherein R 1 is methyl and R 2 to R 5 are hydrogen is diesclaimt, as well as hair dye compositions containing them. |
