Synthesis and structures of deoxyribonucleoside analogues for triazole-linked DNA (TLDNA)

Deoxyribonucleoside analogues bearing acetylene group at the pseudo-5'-position and azido group at the pseudo-3'-position have been synthesized by transglycosylation reaction of deoxythymidine analogue with adenine, cytosine, and guanine nucleobases as nucleophiles. The structures of analogues were studied in crystalline state by X-ray crystallography as well as in solution phase by NMR spectroscopy and showed the puckering conformations similar to the natural congeners. (C) 2010 Elsevier Ltd. All rights reserved.