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. 1966 Oct;101(1):84–102. doi: 10.1042/bj1010084

The biochemistry of aromatic amines

The metabolism of 2-naphthylamine and 2-naphthylhydroxylamine derivatives

E Boyland 1, D Manson 1
PMCID: PMC1270069  PMID: 5971797

Abstract

1. 2-Naphthylhydroxylamine and 2-nitrosonaphthalene were present in urine of dogs but not of guinea pigs, hamsters, rabbits or rats dosed with 2-naphthylamine. N-Acetyl-2-naphthylhydroxylamine and its O-sulphonic acid and O-glucosiduronic acid were not detected in the urine of any of these species. 2. Bile from rats dosed with 2-naphthylamine contained (2-naphthylamine N-glucosid)uronic acid and 6- and 5,6-substituted derivatives of 2-acetamidonaphthalene. 2-Amino-1-naphthyl and 2-acetamido-1-naphthyl derivatives, 2-naphthylhydroxylamine and its N-acetyl derivative or conjugates of these were not detected. Bile from a dog dosed with 2-naphthylamine contained no 2-amino-1-naphthyl derivatives. 3. 2-Naphthylhydroxylamine was metabolized by the dog, rat and guinea pig to the same products as those formed by these species from 2-naphthylamine. Rabbits formed mainly 2-amino-1-naphthyl derivatives; these are minor metabolites of 2-naphthylamine in this species. 4. (N-Acetyl-2-naphthylhydroxylamine O-glucosid)uronic acid was excreted in the urine and the bile of rats and in the urine of guinea pigs and rabbits dosed with N-acetyl-2-naphthylhydroxylamine. 5. After the administration of 2-acetamidonaphthalene, (N-acetyl-2-naphthylhydroxylamine O-glucosid)uronic acid was detected in the urine of dogs, but not in the urine of other species. The dog excreted an acid-labile cysteine derivative of 2-acetamidonaphthalene, but only traces of the corresponding mercapturic acid. 6. After dosing with N-acetyl-2-naphthylhydroxylamine-O-sulphonic acid, rats excreted derivatives of 2-amino-1-naphthol. 7. 2-Nitrosonaphthalene, N-acetyl-2-naphthylhydroxylamine, N-acetyl-2-naphthylhydroxylamine-O-sulphonic acid, 2-naphthylhydroxylamine-N-sulphonic acid, N-benzyloxycarbonyl-2-naphthylhydroxylamine and N-benzyloxycarbonyl-2-naphthylhydroxylamine-O-sulphonic acid were synthesized.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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