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. 1973 Feb;131(2):405–413. doi: 10.1042/bj1310405

Epoxy derivatives of aromatic polycyclic hydrocarbons. The preparation and metabolism of epoxides related to 7,12-dimethylbenz[a]-anthracene

P Sims 1
PMCID: PMC1177481  PMID: 4722443

Abstract

The syntheses of 7,12-dimethylbenz[a]anthracene 5,6-oxide, 7-acetoxymethyl-12-methylbenz[a]anthracene 5,6-oxide and a product that appears to be mainly 7-hydroxymethyl-12-methylbenz[a]anthracene 5,6-oxide are described. The compounds readily rearranged to phenols in the presence of mineral acid, and 7,12-dimethylbenz[a]anthracene 5,6-oxide and its 7-hydroxymethyl derivative reacted slowly with water to yield trans-5,6-dihydro-5,6-dihydroxy-7,12-dimethylbenz[a] anthracene and trans-5,6-dihydro-5,6-dihydroxy-7-hydroxymethyl-12-methylbenz [a]anthracene respectively. Both epoxides were converted enzymically by rat liver microsomal fractions and homogenates into the related trans-dihydrodiols. The epoxides reacted chemically with GSH to form conjugates that were identical with the conjugates formed when the epoxides were incubated with rat liver homogenates. The GSH conjugates were more stable to acid than conjugates derived from other arene oxides. In the alkylation of 4-(p-nitrobenzyl)pyridine, 7,12-dimethyl-benz[a]anthracene 5,6-oxide was more active than the 5,6-oxides of 7-methylbenz[a]-anthracene and benz[a]anthracene.

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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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