J. Jacob, A. Schmoldt, C. Augustin
1991
Citations
1
Influential Citations
15
Citations
Quality indicators
Journal
Toxicology
Abstract
The metabolism of the following thiaarenes has been investigated using liver microsomes of untreated, phenobarbital-, AroclorR- and 5,6-benzoflavone-pretreated rats: dibenzothiophene, naphtho[2,1-b]thiophene, benzo[b]naphtho[2,1-b]thiophene, benzo[b]naphtho[1,2-d]thiophene, benzo[b]naphtho-[2,3-d] thiophene, phenanthrol[1,2-b]thiophene, phenanthrol[4,5-bcd] thiophene, triphenyleno[1,12-bcd]-thiophene and dinaphtho[2,1-b:1',2'-d]thiophene. Thiaarenes with a central thiophene ring preferentially undergo S-oxidation and are converted into sulfoxides and sulfones, whereas those with a peripheral thiophene ring are oxidized at the carbocyclic skeleton resulting in the formation of phenols, dihydrodiols and triols. Sulfone formation seems to be inducible by phenobarbital but only little or not by 5,6-benzoflavone treatment. In most cases 5,6-benzoflavone and AroclorR treatment enhanced the rates of ring oxidation.