Tripathi S, Maity JK, Achari B, Mandal SB. Bicyclic nucleoside analogues from d-glucose: synthesis of chiral as well as racemic 1,4-dioxepane ring-fused derivatives.
Carbohydr Res 2005;
340:1081-7. [PMID:
15797123 DOI:
10.1016/j.carres.2005.02.007]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2004] [Accepted: 02/07/2005] [Indexed: 11/21/2022]
Abstract
The dioxepanofuranose derivatives 4 and 12, obtained through the cyclization of the 3-(2-hydroxyethyl) ether of a D-xylo-pentodialdose derivative, were appropriately functionalized and elaborated to the first examples of the new class of 3'-O and 5'-O-bicyclic nucleoside analogues 9, 10, and 14 with a fused seven-membered ring. Reactions carried out through the intermediacy of the D-xylo-pentodialdose derivative 5 yielded racemic products, while prior protection of the 4-formyl group (as in 7) before deprotection of the 1,2-hydroxyl groups led to optically active analogues.
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