TOTAL ASSIGNMENT OF H-1 AND C-13 SPECTRA OF THE CHLORINATED TRITERPENOID (METHYL RI-O-ACETYLOLEAN-12-ALPHA-CHLORO-28,13-BETA-OLIDE) BY NMR-SPECTROSCOPY

Authors
MONTE FJQ KINTZINGER JP BRAZFILHO R
Citation
Fjq. Monte et al., TOTAL ASSIGNMENT OF H-1 AND C-13 SPECTRA OF THE CHLORINATED TRITERPENOID (METHYL RI-O-ACETYLOLEAN-12-ALPHA-CHLORO-28,13-BETA-OLIDE) BY NMR-SPECTROSCOPY, Magnetic resonance in chemistry, 36(5), 1998, pp. 381-384
Citations number
9
Categorie Soggetti
Spectroscopy,Chemistry,"Chemistry Physical
Journal title
Magnetic resonance in chemistry → ACNP
ISSN journal
07491581
Volume
36
Issue
5
Year of publication
1998
Pages
381 - 384
Database
ISI
SICI code
0749-1581(1998)36:5<381:TAOHAC>2.0.ZU;2-O
Abstract
The current substantial interest concerning the structure elucidation of new active natural products led to the complete H-1 and C-13 chemic al shift assignment of a triterpenoid derivative, methyl 2 alpha,3 bet a,24-tri-O-acetylolean-12 alpha-chloro-28,13 beta-olide, obtained afte r acetylation and methylation of a mixture isolated from Mentha villos a. The 2D shift-correlated NMR techniques HMBC, HMQC, COSY and NOESY w ere used. (C) 1998 John Wiley & Sons, Ltd.