DNA Photochemistry: Geometrically Unconstrained Pyrimidine (6-4) Pyrimidone Photoproducts Do Photoisomerize - Archive ouverte HAL Access content directly
Journal Articles Organic Letters Year : 2015

DNA Photochemistry: Geometrically Unconstrained Pyrimidine (6-4) Pyrimidone Photoproducts Do Photoisomerize

Abstract

Structural features are of major importance for the formation of mutagenic photoproducts in DNA. It was recently reported that lack of constraints between two adjacent nucleosidic units prevents the conversion of pyrimidine (64) pyrimidone photoproducts into their Dewar valence isomers. We here report that this is not the case for the thymidine photoproducts which, although unconstrained, are quantitatively converted into photolysis products identified as Dewar valence isomers by mass spectrometry and NMR and infrared spectroscopies.
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hal-01589961 , version 1 (19-09-2017)

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Thierry Douki, Silvestre Rebelo-Moreira, Nadège Hamon, Pierre-Alain Bayle. DNA Photochemistry: Geometrically Unconstrained Pyrimidine (6-4) Pyrimidone Photoproducts Do Photoisomerize. Organic Letters, 2015, 17 (2), pp.246-249. ⟨10.1021/ol5033267⟩. ⟨hal-01589961⟩
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