Microsomal P450-catalyzed N-dealkylation of N,N-dialkylanilines: evidence for a C(alpha)-H abstraction mechanism

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Issue Date
2002-03-06
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Authors
Bhakta, Mehul N.
Wimalasena, Kandatege
Advisor
Citation

Journal of the American Chemical Society. 2002 Mar 6; 124(9): 1844-5.

Abstract

The early proposal that P450-catalyzed N-dealkylation of N,N-dialkylamines proceeds through a single-electron-transfer (SET) mechanism was later challenged in favor of the C(alpha)-H abstraction mechanism. In the present study, a series of N-alkyl-N-cyclopropyl-p-chloroaniline probes have been used to examine whether the P450-catalyzed N-dealkylations proceed through a C(alpha)-H abstraction and/or a SET mechanism, using phenobarbital-induced rat liver microsomal P450 enzymes as a model system. While the findings are highly consistent with a C(alpha)-H abstraction mechanism, further experimental evidence may be necessary to completely rule out the SET mechanism.

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