A convenient synthesis of iminosugar-C-glycosides via organometallic addition to N-benzyl-N-glycosylhydroxylamines

被引:46
作者
Dondoni, A [1 ]
Perrone, D [1 ]
机构
[1] Univ Ferrara, Dipartimento Chim, Chim Organ Lab, I-44100 Ferrara, Italy
关键词
nitrones; N-benzyl-N-glycosylhydroxylamines; iminosugars; glycosidase inhibitors; organometallic addition;
D O I
10.1016/S0040-4020(03)00631-8
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
N-Benzyl-N-glycosylhydroxylamines were prepared in very good yield via condensation of furanoses and pyranoses with N-benzylhydroxylamine at 110degreesC for 30 min under solvent-free conditions. These anomeric sugar-hydroxylamines exist in equilibrium with the open-chain nitrone form. In fact upon treatment with various organometallic reagents, the corresponding adducts were obtained with good to high diastereoselectivity. These adducts were converted into iminosugar-C-glycosides by reductive dehydroxylation and intramolecular cyclization. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:4261 / 4273
页数:13
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