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Deuterated analogues of the free radical trap DEPMPO: synthesis and EPR studies

Organic & Biomolecular Chemistry Pub Date: 2003-04-08 DOI: 10.1039/B300870C

Abstract

Three analogues of 5-diethoxyphosphoryl-5-methyl-1-pyrroline N-oxide (DEPMPO, 1) labelled with two (1-d₂), five (1-d₅) or seven (1-d₇) ²H were synthesized and used to trap the tert-butylperoxyl radical. The EPR spectra of 1-d₂-OOBu^t and 1-d₇-OOBu^t spin adducts exhibited more straightforward patterns and better signal to noise ratio than those obtained with 1 or 1-d₅. The use of the easily available 1-d₂ as spin trap could help significantly the analysis of the EPR signals when the signal of either superoxide or alkylperoxyl spin adduct is superimposed with the signals of other spin adducts.

Graphical abstract: Deuterated analogues of the free radical trap DEPMPO: synthesis and EPR studies

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Organic & Biomolecular Chemistry

Journal Name：Organic & Biomolecular Chemistry

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