Lung Toxicity and Tumor Promotion by Hydroxylated Derivatives of 2,6-di-<i>tert</i>-Butyl-4-methylphenol (BHT) and 2-<i>tert</i>-Butyl-4-methyl-6-<i>iso</i>-propylphenol: Correlation with Quinone Methide Reactivity
作者:Rene Kupfer、Lori D. Dwyer-Nield、Alvin M. Malkinson、John A. Thompson
DOI:10.1021/tx0255525
日期:2002.8.1
6-di-tert-butyl-4-methylphenol (BHT) in mice are well documented. These effects have been attributed to either of two quinonemethides, 2,6-di-tert-butyl-4-methylenecyclohexa-2,5-dienone (BHT-QM) formed through direct oxidation of BHT by pulmonary cytochrome P450 or a quinonemethide formed by hydroxylation of a tert-butyl group of BHT (to form BHTOH) followed by oxidation of this metabolite to BHTOH-QM
Alkylation of 2‘-Deoxynucleosides and DNA by Quinone Methides Derived from 2,6-Di-<i>tert</i>-butyl-4-methylphenol
作者:Mark A. Lewis、Darla Graff Yoerg、Judy L. Bolton、John A. Thompson
DOI:10.1021/tx960115+
日期:1996.1.1
oxidative metabolism to electrophilic quinonemethides. Reactions of these Michael acceptors with simple nucleophiles and proteins have been reported, but little information is available on quinonemethide binding to the competing nucleophilic sites in DNA. In the present investigation, 2'-deoxynucleoside adducts generated in vitro with two BHT-derived quinonemethides, 2,6-di-tert-butyl-4-methylenecyclohexa-2