152322-55-9Relevant academic research and scientific papers
Synthesis of the four stereoisomers of 2,3-epoxy-4-hydroxynonanal and their reactivity with deoxyguanosine
Petrova, Katya V.,Stec, Donald F.,Voehler, Markus,Rizzo, Carmelo J.
experimental part, p. 1960 - 1971 (2011/04/22)
2,3-Epoxy-4-hydroxynonanal (EHN) is a potential product of lipid peroxidation that gives rise to genotoxic etheno adducts. We have synthesized all four stereoisomers of EHN and individually reacted them with 2′-deoxyguanosine. In addition to 1,N2-etheno-2′- deoxyguanosine, 12 stereoisomeric products were isolated and characterized by 1H NMR and circular dichroism spectroscopy. The stereochemical assignments were consistent with selective NOE spectra, vicinal coupling constants, and molecular mechanics calculations. Reversed-phase HPLC conditions were developed that could separate most of the adduct mixture.
Formation of a substituted 1,N6-etheno-2'-deoxyadenosine adduct by lipid hydroperoxide-mediated generation of 4-oxo-2-nonenal
Rindgen,Seon Hwa Lee,Nakajima,Blair
, p. 846 - 852 (2007/10/03)
Analysis of the reaction between 2'-deoxyadenosine and 13-hydroperoxylinoleic acid by liquid chromatography/constant neutral loss mass spectrometry revealed the presence of two major products (adducts A and B). Adduct A was shown to be a mixture of two isomers (A1 and A2) that each decomposed with the loss of water to form adduct B. The mass spectral characteristics of adduct B were consistent with the substituted 1,N6-etheno-2'-deoxyadensoine adduct 1'-[3-(2'-deoxy-β-D-erythro-pentafuranosyl)-3H-imidazo[2,1-i]purin-7-yl]hept an-2'-one. Adducts A1, A2, and B were formed when 2'-deoxyadenosine was treated with synthetic 4-oxo-2-nonenal, which suggested that it was formed by the breakdown of 13-hydroperoxylinoleic acid. A substantial increase in the rate of formation of adducts A1, A2, and B was observed when 13-hydroperoxylinoleic acid and 2'-deoxyadenosine were incubated in the presence of Fe(II). Thus, 4-oxo-2-nonenal was most likely formed by a homolytic process. Although adducts A1, A2, and B were formed in the reaction between 4-hydroxy-2-nonenal and 2'-deoxyadenosine, a number of additional products were observed. This suggested that 4-hydroxy-2-nonenal was not a precursor in the formation of 4-oxo-2-nonenal from 13-hydroperoxylinoleic acid. This study has provided additional evidence which shows that 4-oxo-2-nonenal is a major product of lipid peroxidation and that it reacts efficiently with DNA to form substituted etheno adducts.
