Complete assignment of the H-1 and C-13 NMR spectra of four triterpenes ofthe ursane, artane, lupane and friedelane groups

Authors
Alves, JS de Castro, JCM Freire, MO da-Cunha, EVL Barbosa, JM de Silva, MS
Citation
Js. Alves et al., Complete assignment of the H-1 and C-13 NMR spectra of four triterpenes ofthe ursane, artane, lupane and friedelane groups, MAGN RES CH, 38(3), 2000, pp. 201-206
Citations number
11
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
MAGNETIC RESONANCE IN CHEMISTRY
ISSN journal
07491581 → ACNP
Volume
38
Issue
3
Year of publication
2000
Pages
201 - 206
Database
ISI
SICI code
0749-1581(200003)38:3<201:CAOTHA>2.0.ZU;2-5
Abstract
The detailed H-1 and C-13 NMR assignments of the four known triterpenes 3 b eta-hydroxyurs-12-en-28-oic acid, 3-oxo-24-methylenecycloartan, 5-oxo-11 al pha-hydroxy-20(29)lupen and 29-hydroxyfriedelin, isolated from three Brazil ian plants, were achieved by 1D and 2D techniques such as DEFT, HETCOR, HMQ C, HMBC, COSY and NOESY. Copyright (C) 2000 John Wiley & Sons, Ltd.