PMR and CMR spectroscopy of methyl 2,3,4,6-tetra-O-methyl-α and β-D-glucopyranoside : An application to the identification of partially methylated glucoses
作者： J. Haverkamp , J.P.C.M. van Dongen , J.F.G. Vliegenthart
DOI: 10.1016/S0040-4020(01)93499-4
关键词:
摘要: Abstract The proton and 13C magnetic resonance spectra of methyl 2,3,4,6-tetra-O-methyl-α- -β- d -glucopyranoside are completely assigned. For this purpose specific deuterium labelling, spin decoupling spectrum simulation employed. NMR data discussed compared with those the free monomers methylglucosides. A partially methylated glucose obtained as a degradation product in permethylation analysis carbohydrate can be identified after compound labelled Me groups comparison PMR or CMR reference permethylglucoses. From these information is about type ring form position(s) glycosidic bond(s) original oligo- polysaccharide. number compounds necessary for identification strongly reduced. method extended to other because there significant differences between various permethylmonosaccharides.
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