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Total assignment of 1 H and 13 C NMR spectra of two isomeric triterpenoids
Author(s) -
Monte F. J. Q.,
Kintzinger J. P.,
BrazFilho R.
Publication year - 1997
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/(sici)1097-458x(199711)35:11<802::aid-omr173>3.0.co;2-7
Subject(s) - chemistry , triterpenoid , two dimensional nuclear magnetic resonance spectroscopy , stereochemistry , carbon 13 nmr , nmr spectra database , nuclear magnetic resonance spectroscopy , spectral line , physics , astronomy
The complete 1 H and 13 C assignment of two closely related isomeric triterpenoid derivatives (methyl 2α,3β‐di‐ O ‐acetylolean‐12‐en‐28‐oate and methyl 2α,3α‐di‐ O ‐acetylurs‐12‐en‐28‐oate) is described. In addition to 1D NMR methods, 2D shift‐correlated NMR techniques (COSY, NOESY, HMBC and HMQC) were used for the assignment. © 1997 John Wiley & Sons, Ltd.