Stereoselective Synthesis of C- and N-Ketosides by Lewis Acid-Catalyzed C- and N-Glycosidation of Alkynyl, Phenyl, and Methyl Ketoses
作者:Ana M. Gómez、Clara Uriel、Slawomir Jarosz、Serafín Valverde、J. Cristóbal López
DOI:10.1002/ejoc.200300465
日期:2003.12
C-Ketosides can be prepared conveniently, in a stereoselective manner, from alkynyl, phenyl and methyl glucopyranose hemiketals by reaction with carbon nucleophiles in the presence of Lewis acids. The reaction of the hemiketals with trimethylsilyl azide provides an efficient route to the corresponding N-ketopyranosides. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
C-酮苷可以通过与碳亲核试剂在路易斯酸存在下反应,以立体选择性方式方便地从炔基、苯基和甲基吡喃葡萄糖半缩酮制备。半缩酮与三甲基甲硅烷基叠氮化物的反应提供了获得相应 N-吡喃酮苷的有效途径。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)