De Novo Asymmetric Synthesis of Homoadenosine via a Palladium-Catalyzed <i>N</i>-Glycosylation
作者:Sanjeeva R. Guppi、Maoquan Zhou、George A. O'Doherty
DOI:10.1021/ol052664p
日期:2006.1.1
[reaction: see text] A highly stereoselective synthesis of l-2-deoxy-beta-ribo-hexopyranosyl nucleosides from 6-chloropurine and Boc-protected pyranone has been developed. Our approach relies on the iterative application of a palladium-catalyzed N-glycosylation, diastereoselective reduction, and reductive 1,3-transposition. This strategy is amenable to prepare various natural and unnatural hexopyranosyl
[反应:见正文]已经开发了由6-氯嘌呤和Boc保护的吡喃酮高度合成的1-2-脱氧-β-核糖-己吡喃糖基核苷。我们的方法依赖于钯催化的N-糖基化,非对映选择性还原和还原性1,3转座的迭代应用。该策略适合制备各种天然和非天然的六吡喃糖基核苷类似物。