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Complete assignment of the 13 C NMR spectra of the ring forms of digitoxose by DEPT spectrum editing and two‐dimensional proton chemical shift correlation spectroscopy
Author(s) -
Coxon Bruce
Publication year - 1986
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/mrc.1260241115
Subject(s) - chemistry , chemical shift , dept , ring (chemistry) , nuclear magnetic resonance spectroscopy , sulfoxide , spectroscopy , carbon 13 nmr satellite , dimethyl sulfoxide , carbon 13 nmr , proton nmr , two dimensional nuclear magnetic resonance spectroscopy , nmr spectra database , spectral line , proton , transverse relaxation optimized spectroscopy , anomer , deuterium nmr , fluorine 19 nmr , stereochemistry , organic chemistry , physics , quantum mechanics , astronomy
The 13 C chemical shifts of the four isomeric ring forms of D‐digitoxose in dimethyl sulfoxide‐ d 6 solution have been assigned completely by DEPT 13 C NMR spectrum editing and two‐dimensional carbon–proton chemical shift correlation spectroscopy. The 13 C chemical shifts are discussed in terms of their dependence on ring size and on anomeric configuration. The equilibrated mixture of four ring forms of D‐digitoxose in dimethyl sulfoxide‐ d 6 solution has been analysed quantitatively by 13 C NMR spectroscopy, and the results compared with those obtained previously by 1 H NMR.