Synthesis of 2′,3′-Dideoxy-D-erythro-hexofuranosyl Nucleosides and 3′-Azido-2′, 3′-dideoxy-D-arabino-hexofuranosyl Nucleosides From Tri-O-acetyl-D-glucal via an α,β-Unsaturated Hexose Alde

Jesper Lau; Jesper Wengel; Erik B. Pedersen; Bent Faber Vestergaard

doi:10.1055/s-1991-28417

Synthesis 1991; 1991(12): 1183-1190
DOI: 10.1055/s-1991-28417

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Synthesis of 2′,3′-Dideoxy-D-erythro-hexofuranosyl Nucleosides and 3′-Azido-2′, 3′-dideoxy-D-arabino-hexofuranosyl Nucleosides From Tri-O-acetyl-D-glucal via an α,β-Unsaturated Hexose Aldehyde

Jesper Lau^* , Jesper Wengel, Erik B. Pedersen, Bent Faber Vestergaard

^*Department of Chemistry, Odense University, DK-5230 Odense M, Denmark

Abstract

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α,β-Unsaturated aldehyde 2 prepared from tri-O-acetyl-D-glucal was acetalated and benzoylated to give α,β-unsaturated acetal 6. Hydrogenation of the double bond followed by methanolysis resulted in methyl 2,3-dideoxyfuranosyl glycoside 8 which was used for nucleoside coupling with silylated N ⁶-isobutyrylcytosine and silylated thymine. Protected 3-azido-2,3-dideoxy-arabino-furanose 26 was prepared by 1,4-addition of hydrazoic acid to disilylated α,β-unsaturated aldehyde 24 followed by acetylation. Compound 26 was used for the preparation of 3′-azido-2′,3′-dideoxy-D-arabino-hexofuranosyl nucleosides 28 and 29.

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