Synthesis and UV photolysis of oligodeoxynucleotides that contain 5-(phenylthiomethyl)-2′-deoxyuridine:: A specific photolabile precursor of 5-(2′-deoxyuridilyl)methyl radical

被引:89
作者
Romieu, A [1 ]
Bellon, S [1 ]
Gasparutto, D [1 ]
Cadet, J [1 ]
机构
[1] CEA Grenoble, Dept Rech Fondamentale Mat Condensee, UMR 5046,Serv Chim Inorgan & Biol, Lab Les Acides Nucl, F-38054 Grenoble 9, France
关键词
D O I
10.1021/ol005643y
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The title exocyclic radical (2) is generated via photochemical cleavage of 5-(phenylthiomethyl)-2'-deoxyuridine (8). The latter thionucleoside (8) was successfully incorporated into DNA oligomers by automated DNA synthesis using phosphoramidite chemistry. UV exposure of 8 containing oligonucleotides under (an)aerobic conditions gives rise to specific base lesions, The photoproducts have been isolated and further characterized on the basis of detailed NMR and mass spectrometric analyses.
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页码:1085 / 1088
页数:4
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