Topic
Pyranose
About: Pyranose is a research topic. Over the lifetime, 1619 publications have been published within this topic receiving 35348 citations. The topic is also known as: pyranoses & hexopyranose.
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TL;DR: In this paper, the self-consistent finite perturbation theory was used to calculate the 13C-13C coupling constants of all cyclic forms of monosaccharides.
Abstract: Rotational surfaces for 13C-13C coupling constants with respect to two dihedral angles at C1 and C2 in model structures of aldopyranoses, aldofuranoses, and aldoseptanoses of the D-series were calculated in terms of the self-consistent finite perturbation theory. Internal rotation of the hydroxy groups exerts an appreciable effect (within 2.5 Hz) on the 13C-13C coupling constants of all cyclic forms of monosaccharides, which provides the possibility for performing conformational analysis of carbohydrates and their metabolites containing pyranose, furanose, and septanose fragments.
10 citations
TL;DR: In this article, a mixture of at least six isomeric forms and one anhydro form of the parent ketoaldohexose, D-xylo-hexos-5-ulose (3), commonly referred to as 5-keto-glucose, was deprotected in aqueous acid solution.
10 citations
TL;DR: The structure of d -threo-2,5-hexodiulosonic acid (1) and various derivatives in solution was determined by 13C-n.m.r. spectroscopy to be a hydrated, pyranose form.
10 citations
TL;DR: In this article, an isomeric mixture of two furanose forms, 6deoxy-α-d-xylo-hexo-furanos-5-ulose and 6-deoxyβ-dexylohexofuranos- 5-uloses, was determined in deuterium oxide solution by 1H and 13C NMR.
10 citations
Patent•
14 May 2009
TL;DR: In this paper, the optical compensation film is characterized by containing a cellulose ester, the following polymer (a), and the following compound (b) containing not less than 2 and not more than 12 structures of at least one of a franose structure or a pyranose structures.
Abstract: This invention provides an optical compensation film, which has excellent visibility (light leakage, uneven color, and front contract) and can simultaneously realize retardation and wavelength dispersion. The optical compensation film is characterized by containing a cellulose ester, the following polymer (a), and the following compound (b). (a) A polymer produced by copolymerizing an ethylenically unsaturated monomer having in its molecule a partial structure represented by general formula (1) with at least one ethylenically unsaturated monomer. General formula (1) (b) An esterified compound produced by esterifying all of or a part of OH groups in a compound (A) having one franose structure or one pyranose structure, or an esterified compound produced by esterifying all of or a part of OH groups in a compound (B) containing not less than 2 and not more than 12 structures of at least one of a franose structure or a pyranose structure.
10 citations