Topic
Aldose
About: Aldose is a research topic. Over the lifetime, 1270 publications have been published within this topic receiving 27197 citations. The topic is also known as: aldoses.
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6 citations
TL;DR: In this paper, aldoses were epimerized at C-2 by Ca2+ in aqueous or alcoholic basic solutions through a stereospecific [1-2] rearrangement of the carbon skeletons of the aldose.
Abstract: Aldoses were epimerized at C-2 by Ca2+ in aqueous or alcoholic basic solutions through a stereospecific [1-2] rearrangement of the carbon skeletons of the aldose. The skeletal rearrangement was confirmed by 13C NMR analysis of the reaction products. The reaction of [1-13C]- and [2-13C]-D-glucose afforded [2-13C]- and [1-13C]-D-mannose, respectively, as major products. The effects of metal ions, bases, and solvents were examined, and it was found that a high concentration of Ca2+ and a base (>pH 12.3) were especially effective for the present rearrangement. Separation of the reaction products was also effected by using Ca2+ cation-exchange chromatography. Thus, under the optimized conditions, D-mannose and D-lyxose, which are rare in nature and expensive, were easily obtained in high isolated yields from D-glucose and D-xylose, respectively.
6 citations
6 citations
TL;DR: In this article, 3.5-Thio-L-fucose and 3.O-allyl-L -Fucose triacetate were synthesized from D-arabinose via D-ARabino-pentodialdo-1,4-furanose derivative.
Abstract: 5-Thio-L-fucose and 3-O-allyl-L-fucose triacetate were synthesized from D-arabinose via D-arabino-pentodialdo-1,4-furanose derivative
6 citations
TL;DR: In this article, a highly stereoselective addition of methyl anion to the C-3 carbonyl groups of α-anomer 9 and β -anomer 10 having 2,6-anhydro-2-thio structures, were synthesized from the common intermediate 6 in stereocontrolled fashion.
6 citations