Chemical model studies on the monoamine oxidase-B catalyzed oxidation of 4-substituted 1-methyl-1,2,3,6-tetrahydropyridines

Franot, C; Mabic, S; Castagnoli, N

HERO ID

4851289

Reference Type

Journal Article

Year

1997

HERO ID 4851289
In Press No
Year 1997
Title Chemical model studies on the monoamine oxidase-B catalyzed oxidation of 4-substituted 1-methyl-1,2,3,6-tetrahydropyridines
Authors Franot, C; Mabic, S; Castagnoli, N
Journal Bioorganic & Medicinal Chemistry
Volume 5
Issue 8 (August 1997)
Page Numbers 1519-1529
Abstract The MAO-B catalyzed alpha-carbon oxidation of amines has been proposed to proceed via either a single electron transfer (SET) or hydrogen atom transfer (HAT) pathway. In an attempt to distinguish between these pathways, we have examined the alpha-carbon oxidation of a series of 4-substituted 1-methyl-1,2,3,6-tetrahydropyridine derivatives, compounds which are MAO-B substrates, employing chemical models of the SET pathway [using the PF-6 salt of Fe+3 (1,10-phenanthroline)3 as the electron acceptor] and HAT pathway (using the tert-butoxyl radical as the hydrogen atom acceptor). The rates of oxidation and deuterium isotope effects observed with these compounds were similar with the two model reactions. Consequently, unlike their utility in modeling the related cytochrome P450 catalyzed alpha-carbon oxidation of N,N-dimethylaniline derivatives, it appears that these reagents will not distinguish between the proposed pathways.
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Keyword Index Medicus