Structure of a pentacyclic triterpenyl angelate from Loeseliamexicana. 1H 2D-NMR data and stereochemistry
- 1 December 1989
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 67 (12) , 2071-2077
- https://doi.org/10.1139/v89-322
Abstract
The total assignment of 1H NMR spectra of a pentacyclic triterpene from Loeseliamexicana was performed using selected 2D-NMR experiments (COSY, NOE). X-ray diffraction data were obtained from the parent compound as supplemental information to the NMR investigations. The data allowed for the unambiguous assignment of the structure and the stereochemistry of the title compound. Keywords: pentacyclic triterpene NMR, 2D NMR of terpenes, X-ray of triterpenes, triterpenyl angelate NMR, X-ray -2D NMR structure determination.This publication has 2 references indexed in Scilit:
- Total assignment of 13C and 1H spectra of three isomeric triterpenol derivatives by 2D NMR: an investigation of the potential utility of 1H chemical shifts in structural investigations of complex natural productsTetrahedron, 1986
- Total assignment of the 13C spectrum of taraxasteryl acetate by 13C–13C connectivity experiments and determination of the stereochemistry of taraxasterol by X-ray diffractionCanadian Journal of Chemistry, 1985