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 addition of pyridin-2-yl-, (pyndin 2-ylmethyl)-lithium or lithium acetylide to 1,2:4,5-di- O -isopropylidene-β-d -erythro -2,3-hexodiulo-2,6-pyranose (1) affords the corresponding tertiary alcohol derivative in good yield with high stereo-selectivity.
8 citations
Patent•
22 Jun 2007
TL;DR: In this article, a cellulose ester film consisting of an ester compound having at least one of pyranose structures or a furanose structure in an amount of ≥ 1 and ≤ 12 structures wherein all or a part of the OH groups of the structure is esterified, and an acrylic polymer.
Abstract: PROBLEM TO BE SOLVED: To provide a cellulose ester film having excellent visibility (light leakage, color nonuniformity and front contrast) and satisfying both of retardation and wavelength dispersion. SOLUTION: The cellulose ester film comprises a cellulose acetate phthalate, an ester compound having at least one of a pyranose structure or a furanose structure in an amount of ≥1 and ≤12 structures wherein all or a part of the OH groups of the structure is esterified, and an acrylic polymer. COPYRIGHT: (C)2009,JPO&INPIT
8 citations
TL;DR: In this paper, a short synthesis of thiosugar derivatives mimicking furanose, pyranose and septanose structures has been achieved starting from L-gulono-1,4-lactone and D-glucoheptono-1.4-Lactone.
8 citations
TL;DR: In this article, the adsorption of a series of water-soluble carbohydrate polymers on peptized montmorillonite is examined, and the results emphasize the adorption characteristics of guaran and cellulose ethers.
8 citations
TL;DR: In this paper, an α or β alkynyl group attached to the anomeric position of a pyranose ring was epimerized through a dicobalthexacarbonyl complex by treatment with trifluoromethane sulfonic acid.
Abstract: C-Glycosidation is of great significance since it contains the introduction of carbon chains to sugar chirons or sugar nuclei as chiral pools. Silylacetylenes are sufficiently reactive to form sugar acetylenes for the selective introduction of acetylenic groups to sugar rings. Bis-C-glycosidation allows introduction of two sugars at both ends of a bis (trimethylsilyl) acetylene. A 2, 3-dideoxyglucose derivative provided the corresponding C-1 α acetylenic compounds, which would increase the scope of C-glycosidation with silylacetylenes. An alkynyl group attached to the anomeric position of a pyranose ring was epimerized through a dicobalthexacarbonyl complex by treatment with trifluoromethane sulfonic acid. Three steps involving cobalt complexation, acidic transformation and decomplexation afforded overall epimerization and thus prompted us to provide either the α or β alkynyl C-glycoside as desired. Ring opening of a dihydropyran derivative using Nicholas-type cation intermediates was also an accomplished part of this study.
8 citations