Acylic Sugar Derivatives for GC/MS Analysis of <sup>13</sup>C-Enrichment during Carbohydrate Metabolism
作者:Neil P. J. Price
DOI:10.1021/ac049198m
日期:2004.11.1
localize and quantify the fractional incorporation of 13C isotope into each carbon atom of precursor-derived metabolites. In this paper, several carbohydrate derivatization procedures (peracetylation, deuterioalditol acetates, and aldononitrile acetates) are evaluated for the positional isotopic information obtained by gas chromatography/electron impact mass spectrometry (GC/EI-MS). These derivatives
Mild and Efficient Hydrolysis of Thioglycosides to Glycosyl Hemiacetals Using <i>N</i>-Iodosaccharin
作者:Anup Misra、Pintu Mandal
DOI:10.1055/s-2007-977412
日期:——
A convenient methodology has been developed for the mild hydrolysis of thioglycosides to the corresponding hemiacetals using N-iodosaccharin without any requirement of co-activator. Most of the functional groups used for the protecting group manipulation of carbohydrates remain unaffected under the reaction conditions.
The anodic method of deprotection of carbonyl compounds (oxidative decomposition of gem-dithioacetal systems) is applied with success to sugars. Protected hydroxy groups like esters and cyclic acetals are not affected.