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: The presence of three aromatic groups in the pyranose ring resulted essential for NK-2 affinity, while an increase in activity was shown by the corresponding sulfoxides.
12 citations
TL;DR: In this article, 2-amino-2-deoxy-D-glucose diethyl dithioacetal hydrochloride with nitrous acid in aqueous hydrochloric acid was shown to be an aldose having the D-gluco configuration.
12 citations
Patent•
11 Aug 1994
TL;DR: In this paper, an enzyme immobilizing carrier is produced by dissolving low-molecular weight chitosan in an aqueous acid solution and dropping the solution into a basic solution to produce regenerated pyranose ring residue.
Abstract: An enzyme immobilizing carrier is produced by dissolving low-molecular weight chitosan in an aqueous acid solution and dropping the solution into a basic solution to produce regenerated porous chitosan in particles, reacting the regenerated porous chitosan in particles with the glycidyl ether of an aliphatic polyalcohol, and reacting further the resulting chitosan with the acid halide or acid anhydride of a higher fatty acid in a polar organic solvent. An enzyme and a polyfunctional cross-linking agent are reacted with the carrier to covalently immobilize the enzyme on the carrier. In a preferred embodiment, the enzyme is lipase and the carrier is produced by introducing the glycidyl ether of an aliphatic polyalcohol at 0.01 to 0.4 mole to 1 mole of the pyranose ring residue of the chitosan and by introducing a higher fatty acid having a total carbon number of 6 to 20 at 0.05 to 1 mole to 1 mole of the pyranose ring residue of the chitosan.
12 citations
TL;DR: In this paper, the pyranose ring was used as the tetrahydrocoumalate skeleton to synthesize methyl 2,3-anhydro-α-D-lyxopyranoside by cyclopentane annulation.
Abstract: 1-α-O-Methyl-loganin (1) was synthesised from methyl 2,3-anhydro-α-D-lyxopyranoside by cyclopentane annulation using the pyranose ring as the tetrahydrocoumalate skeleton.
12 citations
TL;DR: In this paper, the reaction of organometallic derivatives of monosaccharides with aldehydes catalyzed with BF3·OEt2 was studied, and a significant difference in reactivity between the pyranosidic and furanoidic allyltins was noted.
Abstract: The reaction of organometallic derivatives of monosaccharides with aldehydes catalyzed with BF3·OEt2 was studied. A significant difference in reactivity between the pyranosidic and furanosidic allyltins was noted. The former reacted readily with aldehydes affording precursors of higher carbon sugars with very high stereoselectivity, while the latter underwent rearrangement with elimination of the stannyl moiety prior to reaction with the aldehyde.
12 citations