title: Model electrochemical-mass spectrometric studies of the cytochrome P450-catalyzed oxidations of cyclic tertiary allylamines.
abstract: Single-electron transfer and hydrogen atom transfer pathways have been proposed to account for the cytochrome P450-catalyzed alpha-carbon oxidations of amines. With the aid of electrochemistry-electrospray ionization mass spectrometry, the electrochemical potentials required for the one-electron oxidations of N-methyl- and selected N-cyclopropyl-4-phenyl-1,2,3,6-tetrahydropyridinyl derivatives and the chemical fates of the resulting aminyl radical cations have been investigated. Comparison of the results of these studies with those observed in the corresponding enzyme catalyzed oxidations suggests that aminyl radical cations are not obligatory intermediates in the cytochrome P450-catalyzed alpha-carbon oxidations of this class of substrates.
authors.affiliation: Department of DMPK and Bioanalytical Chemistry, AstraZeneca R&D Mölndal, S-431 83 Mölndal, Sweden.
authors.forename: Ulrik
authors.initials: U
authors.lastname: Jurva
authors.forename: Philippe
authors.initials: P
authors.lastname: Bissel
authors.forename: Emre M
authors.initials: EM
authors.lastname: Isin
authors.forename: Kazuo
authors.initials: K
authors.lastname: Igarashi
authors.forename: Simon
authors.initials: S
authors.lastname: Kuttab
authors.forename: Neal
authors.initials: N
authors.lastname: Castagnoli
mesh_terms: D000499:Allylamine / Q000737:chemistry*; D000588:Amines / Q000737:chemistry; D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D002412:Cations; D003577:Cytochrome P-450 Enzyme System / Q000737:chemistry*; D004563:Electrochemistry; D004579:Electron Transport; D005609:Free Radicals / Q000737:chemistry; D006844:Hydrocarbons, Cyclic / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D008956:Models, Chemical; D010084:Oxidation-Reduction; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D000588:Amines; D002412:Cations; D005609:Free Radicals; D006844:Hydrocarbons, Cyclic; D000499:Allylamine; D002244:Carbon; D003577:Cytochrome P-450 Enzyme System; D007501:Iron