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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12 Nov 2007
TL;DR: In this paper, a method for isomerizing D-psicose to D-allose by reacting with an L-rhamnose isomerase was proposed. But this method requires the use of a protein composed of an amino acid sequence, specified by the chemical properties.
Abstract: PROBLEM TO BE SOLVED: To provide a method for isomerizing D-psicose to D-allose by reacting with an L-rhamnose isomerase. SOLUTION: D-allose is produced by isomerizing D-psicose to D-allose by treating D-psicose with a protein composed of an amino acid sequence having a specific sequence, specified by the chemical properties (i), originated from Pseudomonas stutzeri (IPOD FERM BP-08593) and having L-rhamnose isomerase activity. (i) Action: catalyzing the isomerizing reaction between an aldose and a ketose selected from the group consisting of D-allose and D-psicose, and D-altrose and D-psicose as shown by thick black lines. COPYRIGHT: (C)2008,JPO&INPIT
2 citations
TL;DR: The authors summarizes recent approaches towards the selective formation of anomeric aldose and aldulosonic acid phosphates of biological relevance, in particular as precursors for the synthesis of nucleotide-activated sugars.
Abstract: This review summarizes recent approaches towards the selective formation of anomeric aldose and aldulosonic acid phosphates of biological relevance, in particular as precursors for the synthesis of nucleotide-activated sugars.
2 citations
01 Jan 2011
TL;DR: In this paper, the authors analyzed the gas chromatography separation of monosaccharides, amino sugar, sugar alcohol and reduced sugar using mass spectra of TMS derivatives of sugar.
Abstract: Publisher Summary
Monosaccharides are the simplest form of carbohydrates and may be subcatagorized as aldoses or ketoses. The sugar is an aldose if it contains an aldehyde functional group. A ketose signifies that the sugar contains a ketone functional group. The purpose of this chapter is to analyse the gas chromatography separation of monosaccharides, amino sugar, sugar alcohol and reduced sugar. Mass spectra of TMS derivatives of sugars are also included which focuses on molecular weight, fragmentation. By plotting mass chromatograms for the m/z value of the M+• peak and the accurate m/z value 362.1639, the presence of these amino sugars can be determined. Chemical ionization using ammonia as reagent gas establishes the molecular weights of sugar acetates.
2 citations
TL;DR: In this article, it was shown that a number of aldose sugars are oxidized at characteristic rates by the action of hypoiodous acid, and that the rate of oxidation appears to be related to the structural configuration for any particular aldoses.
Abstract: IN a recently published paper1, it was shown that a number of aldose sugars are oxidized at characteristic rates by the action of hypoiodous acid. The rate of oxidation appears to be related to the structural configuration for any particular aldose; thus glucose and xylose show a similar rate of oxidation, which is, however, different from that shown by galactose and arabinose, and different again from that shown by mannose. The magnitude of these variations in the rate of oxidation is sufficiently great to enable a positive identification of the configurational group to which any one of these aldoses may belong. This work (loc. cit.) suggested that kinetic measurements of the hypoiodous acid oxidation of sugar derivatives of the aldose type might yield valuable information on the structure of such derivatives.
2 citations
TL;DR: In this paper, the acid hydrolysis of this new C-glucoside was investigated, and the acid acid acid degradation of the new CGL was also investigated.
Abstract: 2,6-Diacetyl-4-C-(β-D-glucopyranosyl)-4-hydroxycyclohexane-1,3,5-trione was obtained by the deacetylation of 2,6-diacetyl-4-C-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-4-hydroxycyclohexane-1,3,5-trione which prepared by the C-glucosylation of 2,6-diacetyl-1,3,4,5-benzenetetrol with 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide. The acid hydrolysis of this new C-glucoside was investigated.
2 citations