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Diastereoselective synthesis of some carbocyclic 2′-oxa-3′-aza-nucleosides

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

Two strategies for the synthesis of isoxazolidinyl nucleosides as potential antiviral agents are reported: a one-step approach based on 1,3-dipolar cycloaddition of D-lyxosyl nitrone with N,N-dibenzyl-9-vinyl adenine, and a two-step methodology based on the Vorbrüggen nucleosidation of the 5-acetoxyisoxazolidine. The chiral D-lyxosyl nitrone undergoes regioselective 1,3-dipolar cycloadditions with N,N-dibenzyl-9-vinyl adenine and vinyl acetate giving 5-substituted isoxazolidines as a mixture of four diastereoisomers in good yields. The condensation of 5-acetoxyisoxazolidine with silylated uracil, thymine, and N-acetylcytosine proceeded with moderate to good stereoselectivity with the formation of the expected isoxazolidinyl β-and α-nucleosides.

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Dedicated to Prof. Dr. E. Lukevics on the occasion of his 70th birthday

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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 01, pp. 14–21, Januvary, 2007.

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Hýrošová, E., Fišera, L., Jame, R.MA. et al. Diastereoselective synthesis of some carbocyclic 2′-oxa-3′-aza-nucleosides. Chem Heterocycl Compd 43, 10–17 (2007). https://doi.org/10.1007/s10593-007-0002-4

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  • DOI: https://doi.org/10.1007/s10593-007-0002-4

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