Journal
TETRAHEDRON
Volume 62, Issue 11, Pages 2529-2536Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2005.12.047
Keywords
ucleosides; regioselectivity; glycosylation; stereoselectivity; conformation
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Regio- and stereocontrolled synthesis and conformational analysis of a series of benzimidazole nucleosides were achieved. A simple method by H-1 NMR 1D NOE experiment was developed for estimation of syn or anti conformation of benzimidazole nucleosides. Substituents at C2 of benzimidazole demonstrated to play a key role both in the unexpected regioselectivity of the glycosidic reaction and in the conformation distributions of the final products. (c) 2005 Elsevier Ltd. All rights reserved.
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