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31 P NMR INEPT spectroscopy: a powerful tool for structural analysis of phosphitylated carbohydrates
Author(s) -
Pouységu Laurent,
De Jéso Bernard,
Lartigue Jean Claude,
Pétraud Michel,
Ratier Max
Publication year - 2000
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/1097-458x(200008)38:8<668::aid-mrc712>3.0.co;2-d
Subject(s) - homonuclear molecule , chemistry , nuclear magnetic resonance spectroscopy , disaccharide , spectroscopy , phosphorus 31 nmr spectroscopy , pulse sequence , carbon 13 nmr satellite , fluorine 19 nmr , nmr spectra database , nuclear magnetic resonance spectroscopy of nucleic acids , acceptor , stereochemistry , crystallography , computational chemistry , spectral line , molecule , transverse relaxation optimized spectroscopy , nuclear magnetic resonance , organic chemistry , physics , quantum mechanics , astronomy , condensed matter physics
The application of the refocused‐decoupled INEPT pulse sequence in 31 P NMR spectroscopy allows, in conjunction with computer simulations, a straightforward editing of the spectra. Experiments were performed on phosphite derivatives of selected mono‐ and disaccharide model compounds. Structural investigations point towards the existence of homonuclear 31 P– 31 P couplings through O— P coordination versus coupling through the ring chains, the origin of which is being attributed to donor– acceptor chelating interactions between phosphorus and oxygen atoms in spatially closely related dioxaphospholane rings. Copyright © 2000 John Wiley & Sons, Ltd.