title: The formation of dihydrodiols in the chemical or enzymic oxidation of dibenz[a,c]anthracene, dibenz[a,h]-anthracene and chrysene.
abstract: The formation of trans-dihydrodiols from dibenz[a,c]anthracene, dibenz[a,h]anthracene and chrysene by chemical oxidation in an ascorbic acid-ferrous sulphate-EDTA system and by rat-liver microsomal fractions has been studied using a combination of thin-layer (TLC) and high pressure liquid chromatography (HPLC) to separate the mixtures of isomeric dihydrodiols. The 1,2- and 3,4-dihydrodiols of dibenz[a,c]anthracene, the 1,2-,3,4- and 5,6-dihydrodiols of dibenz[a,h]anthracene and the 1,2-, 3,4- and 5,6-dihydrodiols of chrysene were formed in chemical oxidations. These dihydrodiols were also formed when the three parent hydrocarbons were metabolized by rat-liver microsomal fractions and, in addition, dibenz[a,c]anthracene yielded the 10,11-dihydrodiol. The 1,2- and 3,4-dihydrodiols of dibenz[a,c]anthracene have not been reported previously either as metabolites of the hydrocarbon or as products of chemical syntheses and the 5,6-dihydrodiol of chrysene was not detected in earlier metabolic studies.
mesh_terms: D000818:Animals; D001205:Ascorbic Acid; D001551:Benz(a)Anthracenes / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D002911:Chrysenes / Q000378:metabolism*; D004492:Edetic Acid; D005296:Ferrous Compounds; D008862:Microsomes, Liver / Q000378:metabolism; D010084:Oxidation-Reduction; D010616:Phenanthrenes / Q000378:metabolism*; D051381:Rats
chemical_list: D001551:Benz(a)Anthracenes; D002911:Chrysenes; D005296:Ferrous Compounds; D010616:Phenanthrenes; D004492:Edetic Acid; D001205:Ascorbic Acid