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Volumn 4, Issue 20, 2006, Pages 3754-3756

Sulfanyl radical promoted C4′-C5′ bond scission of 5′-oxo-3′,4′-didehydro-2′,3′-dideoxynucleosides

Author keywords

[No Author keywords available]

Indexed keywords

BENZENETHIOL; DOUBLE BONDS; ELIMINATION REACTIONS; SULFANYL RADICALS;

EID: 33749548037     PISSN: 14770520     EISSN: None     Source Type: Journal    
DOI: 10.1039/b609995e     Document Type: Article
Times cited : (4)

References (22)
  • 17
    • 33749550552 scopus 로고    scopus 로고
    • note
    • 1H NMR and then chromatographed on a silica gel column by gradual elution with hexane-ethyl acetate.
  • 18
    • 37049089042 scopus 로고
    • We might explain this finding by assuming that polar factors could play a determining role, since both sulfanyl radicals and radicals 7a, b are expected to be electrophilic in character. In fact, it is generally assumed that the hydrogen atom transfer reaction is disfavored when the attacking radical and the displaced radical show the same philicity. See: B. P. Roberts A. J. Steel J. Chem. Soc., Perkin Trans. 2 1994 2155
    • (1994) J. Chem. Soc., Perkin Trans. 2 , pp. 2155
    • Roberts, B.P.1    Steel, A.J.2
  • 20
    • 11544314893 scopus 로고    scopus 로고
    • As far as the formation of the free base is concerned, we cannot exclude the possibility that the free base and the unidentified sugar fragments arise from hydroperoxides 8 through initial O-O bond scission in competition with the intramolecular nucleophilic addition to the α-carbonyl atom. However, the finding that adenine is the almost exclusive product when 1b was reacted under hypoxic conditions suggested that another route is available for its formation. Since both aldehydes 1a and 1b were found to be thermally stable, we could infer that the free base might arise from radical 7a, b through some decomposition reaction in competition with the trapping by dioxygen
    • W. K. Pogozelski T. D. Tullius Chem. Rev. 1998 98 1089
    • (1998) Chem. Rev. , vol.98 , pp. 1089
    • Pogozelski, W.K.1    Tullius, T.D.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.