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- W1966848155 abstract "Abstract A series of 6- and/or 7-substituted 2,4-quinazoline-dione N-1-deoxyribofuranosides have been synthesized and characterized. The 2′-deoxy-β-D-ribofuranosides 23–28 have been prepared by transformation of the corresponding ribofuranosides by chemical deoxygenation. Direct glycosidation to the β-anomers with a 2′-deoxyribofuranosyl donor to pure anomers failed due to missing diastereoselectivity and difficult separation of the reaction products. The synthesis of the 3′-deoxy-β-D-ribofuranosides 54–58, however, was achieved by glycosidation of the trimethylsilylated 2,4-quinazolinediones 43–47 with an appropriate 3′-deoxyribofuranosyl donor (48). The 2′,3′-dideoxy-β-D-ribofuranosyl derivatives 63–66 were again obtained by chemical deoxygenation of the corresponding 2′-deoxy-β-D-nucleosides, since all experiments of direct glycosidation with a 2′,3′-dideoxyribofuranosyl donor as well as the chemical conversion of the corresponding ribonucleosides into the 2′,3′-dideoxynucleosides failed due to side reactions. The newly synthesized compounds have been identified by UV and 1H-NMR spectra as well as elemental analyses." @default.
- W1966848155 created "2016-06-24" @default.
- W1966848155 creator A5075317460 @default.
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- W1966848155 date "1992-02-01" @default.
- W1966848155 modified "2023-10-18" @default.
- W1966848155 title "Nucleosides. IL. Synthesis and Properties of 2,4-Quinazolinedione N-1-2′ Deoxy-, 3′-Deoxy- and 2′,3′-Dideoxynucleosides" @default.
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- W1966848155 doi "https://doi.org/10.1080/07328319208021742" @default.
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