Published 1989 | Version v1
Journal article Metadata-only

A one- and two-dimensional 13C and 1H N.M.R. study of some triterpenes of the hopane, stictane and flavicene groups

Creators

  • 1. Waikato Univ., Hamilton (New Zealand). Dept. of Chemistry
  • 2. Australian National Univ., Canberra (Australia). Research School of Chemistry
  • 3. New Zealand Forest Service, Rotorua (New Zealand). Forest Research Inst.
  • 4. Department of Agriculture, Hamilton (New Zealand). Ruakura Agricultural Research Centre

Description

The phase sensitive two-dimensional (2D) 13C-1H heteronuclear correlated and double quantum filtered COSY n.m.r. spectra of the triterpenes 7β-acetoxyhopan-22-ol and 2α,3β,22α-triacetoxystictane have been recorded at a resolution sufficient for the complete assignment of their proton resonances. Revisions to some of the methylene proton resonances of 7βacetoxyhopan-22-ol proposed elsewhere are discussed, and assignments for a series of flavicene and stictane triterpenes are presented. 2D n.m.r. analyses of a new triterpene isolated from the extracts of the lichen Pseudocyphellaria coronata revealed it to be 22α-hydroxystictano-25,3β-lactone. 23 refs., 5 figs., 5 tabs

Additional details

Publishing Information

Journal Title
Australian Journal of Chemistry
Journal Volume
42
Journal Issue
2
Series
Aust. J. Chem.
Journal Page Range
243-257
ISSN
0004-9425
CODEN
AJCHA

INIS

Country of Publication
Australia
Country of Input or Organization
Australia
INIS RN
20067703
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
CARBON 13; CHEMICAL SHIFT; EXPERIMENTAL DATA; HYDROGEN 1; J-J COUPLING; LACTONES; METHYLENE RADICALS; MOLECULAR STRUCTURE; NMR SPECTRA; NUCLEAR MAGNETIC RESONANCE; PROTONS; STRUCTURAL CHEMICAL ANALYSIS; TERPENES
Descriptors DEC
BARYONS; CARBON ISOTOPES; CATIONS; CHARGED PARTICLES; COUPLING; DATA; ELEMENTARY PARTICLES; ESTERS; EVEN-ODD NUCLEI; FERMIONS; HADRONS; HETEROCYCLIC COMPOUNDS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; HYDROGEN ISOTOPES; INFORMATION; INTERMEDIATE COUPLING; IONS; ISOTOPES; LIGHT NUCLEI; MAGNETIC RESONANCE; NUCLEI; NUCLEONS; NUMERICAL DATA; ODD-EVEN NUCLEI; ORGANIC COMPOUNDS; RADICALS; RESONANCE; SPECTRA; STABLE ISOTOPES