首页   按字顺浏览 期刊浏览 卷期浏览 Synthesis of Ribofuranosides by Catalysis with Lewis Acids. Glycosidation Versus Transa...
Synthesis of Ribofuranosides by Catalysis with Lewis Acids. Glycosidation Versus Transacetylation

 

作者: Ivan Chiu-Machado,   JulioC Castro-Palomino,   Odalys Madrazo-Alonso,   Carlos Lopetegui-Palacios,   Vicente Verez-Bencomo,  

 

期刊: Journal of Carbohydrate Chemistry  （Taylor Available online 1995）
卷期: Volume 14, issue 4-5  

页码: 551-561

 

ISSN:0732-8303

 

年代: 1995

 

DOI:10.1080/07328309508005357

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Several ribofuranosyl derivatives bearing trichloroacetimidoyl or acetyl leaving groups in a Lewis acid promoted ribosylation reaction were prepared and used in an attempt to improve the yield and to avoid donor → acceptor transacetylation. Trichloroacetimidates were excellent donors affording disaccharides with very high yields under mild conditions. The corresponding 1-O-acetylated analogs could also be used with out transacetylation in the presence of boron trifluoride etherate.

 

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