Abstract
2-Hydroxy-succinaldehyde was detected by a GC/MS analysis of trapped aldehydic compounds obtained after Fe2+/ascorbate lipid peroxidation of arachidonic acid. Precursor molecules of aldehydes are hydroperoxy compounds. Thus the generation of the two aldehydic groups in 2-hydroxysuccinaldehyde requires a precursor molecule with two hydroperoxy groups. The hydroxy group in 2-position is generated by a third hydroperoxidation reaction. The detection of 2-hydroxysuccinaldehyde—although found only in traces—is the first example for triple dioxigenation of unsaturated fatty acid. Linolenic acid produces 2-hydroxysuccinaldehyde in much lower amounts than arachidonic acid. A similar oxidation of linoleic acid was not observed.
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