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: A new glycolipid has been isolated from M. fortuitum as discussed by the authors, which is an asymmetric trehalose diester in which two fatty acids esterify the same pyranose cycle.
19 citations
TL;DR: In this paper, the structure of the methyl ester of N-acetylneuraminic acid monohydrate has been determined from three-dimensional X-ray diffraction data, and the structure was solved using the tangent formula and refined by block-diagonal least-squares techniques to R=0.042.
Abstract: The crystal structure of the methyl ester of N-acetylneuraminic acid monohydrate has been determined from three-dimensional X-ray diffraction data. The crystals are orthorhombic, space group P212121, with unit-cell constants a=7.954+ 1, b= 11.675+4, c= 16.974+2 ~. The structure was solved using the tangent formula and refined by block-diagonal least-squares techniques to R=0.042. The three bulky substituent groups, the N-acetyl, the glycero and the methyl ester groups, are all equatorially bonded to the pyranose ring while the hydroxyl group at the anomeric carbon atom C(2) is in the axial position. An extensive system of seven interand one intramolecular hydrogen bonds holds the molecules quite rigidly in the crystal lattice, resulting in an average overall isotropic temperature factor coefficient of only 2.7 ,~2.
19 citations
TL;DR: Structures of heparin disaccharide have been analyzed by DFT using the B3LYP/6-311++G method and three-bond proton-proton and Proton-carbon spin-spin coupling constants computed for both forms agree with the experimental data and indicate that only two chair forms contribute to the conformational equilibrium in disacCharide.
19 citations
TL;DR: The bioactive compounds did not show cytotoxic effects to human lymphocytes using the MTT method adapted for non-adherent cells, nor genotoxicity determined by the short-term in vitro chromosomal aberration assay.
19 citations
19 citations