Premium
Total assignment of 1 H and 13 C spectra of the chlorinated triterpenoid (methyl 2α,3β,24‐tri‐ O ‐acetylolean‐12α‐ chloro‐28,13β‐olide) by NMR spectroscopy
Author(s) -
Monte F. J. Q.,
Kintzinger J. P.,
BrazFilho R.
Publication year - 1998
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(199805)36:5<381::aid-omr262>3.0.co;2-q
Subject(s) - chemistry , two dimensional nuclear magnetic resonance spectroscopy , triterpenoid , stereochemistry , nuclear magnetic resonance spectroscopy , derivative (finance) , nmr spectra database , carbon 13 nmr , chemical shift , organic chemistry , spectral line , financial economics , economics , physics , astronomy
The current substantial interest concerning the structure elucidation of new active natural products led to the complete 1 H and 13 C chemical shift assignment of a triterpenoid derivative, methyl 2α,3β,24‐tri‐ O ‐acetylolean‐12α‐chloro‐28,13β‐olide, obtained after acetylation and methylation of a mixture isolated from Mentha villosa . The 2D shift‐correlated NMR techniques HMBC, HMQC, COSY and NOESY were used. © 1998 John Wiley & Sons, Ltd.