Patent ID: 6840965

Claim:
p-Aminophenol derivatives of general formula (I) or physiologically tolerated, water-soluble salts thereof wherein X denotes oxygen or sulfur, R1 denotes hydrogen, a halogen atom, a C 1 -C 4 -alkyl group, a C 1 -C 4 -hydroxyalkyl group or a C 1 -C 4 -alkoxy group; R2 and R4 independently of each other denote hydrogen, a hydroxyl group, a halogen atom, a cyano group, a C 1 -C 4 -alkoxy group, a C 1 -C 6 -alkyl group, a C 1 -C 4 -alkyl thioether group, a mercapto group, a nitro group, an amino group, a C 1 -C 6 -alkylamino group, a (C 1 -C 8 )-dialkylamino group, a —C(OH) group, a —C(O)CH 3 group, a —C(O)CF 3 group, an —Si(CH 3 ) 3 group, a C 1 -C 4 -hydroxyalkyl group, a C 3 -C 4 -dihy-droxyalkyl group, a —CH═CHR6 group, a —(CH 2 ) p —CO 2 R7 group or a —(CH 2 ) p —R8 group (with p═1,2, 3 or 4), a —C(R9)═NR10 group or a C(R11)H-NR12R13 group; R3 denotes hydrogen, a halogen atom, a C 1 -C 8 -alkyl group or a —C(O)H group; R6 denotes hydrogen, a hydroxyl group, a nitro group, an amino group, a —CO 2 R7 group or a —C(O)CH 3 group; R7, R9 and R11 independently of each other denote hydrogen or a C 1 -C 4 -alkyl group; R8 denotes an amino group or a nitrile group; R10, R12 and R13 independently of each other denote hydrogen, a hydroxyl group, a C 1 -C 4 -alkyl group, a C 1 -C 4 -hydroxyalkyl group, a C 3 -C 4 -dihydroxyalkyl group or a radical of formula (II) and R14 denotes hydrogen, an amino group or a hydroxyl group.