Published March 2000 | Version v1
Journal article Metadata-only

Chemical constituents from Ouratea floribunda: complete 1 H and 13 C NMR assignments of atranorin and its new acetyl derivative

Creators

  • 1. Universidade Federal Rural do Rio de Janeiro, RJ (Brazil). Dept. de Quimica
  • 2. Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ (Brazil). Setor de Quimica de Produtos Naturais

Description

Chromatographic fractionation of the hexane extract from the wood of Ouratea floribunda (Ochnaceae) afforded friedelin (1), friedelanol (2), lupeol (3) and the depside atranorin (4). The structure elucidation of the isolated compounds was performed by spectrometric analysis involving comparison with literature data. The unambiguous assignments of 1H and 13 C NMR data of atranorin 4 and its acetyl derivative 4a are reported for the first time and involved 1H-1 homonuclear (COSY and NOESY) and 1 H-13 C heteronuclear (HMQC and HMBC) NMR experiments. (author)

Additional details

Publishing Information

Journal Title
Journal of the Brazilian Chemical Society
Journal Volume
11
Journal Issue
2
Journal Page Range
[6 p.]
ISSN
0103-5053
CODEN
JOCSET

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
31062812
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CARBON 13; CHEMICAL SHIFT; ELECTRONIC STRUCTURE; ENERGY LEVELS; HEXANE; J-J COUPLING; LIQUID COLUMN CHROMATOGRAPHY; MOLECULAR STRUCTURE; NUCLEAR MAGNETIC RESONANCE; PROTONS; SILICA GEL; STRUCTURAL CHEMICAL ANALYSIS; TISSUE EXTRACTS; TREES; WOOD
Descriptors DEC
ADSORBENTS; ALKANES; BARYONS; BIOLOGICAL MATERIALS; CARBON ISOTOPES; CATIONS; CHARGED PARTICLES; CHROMATOGRAPHY; COUPLING; ELEMENTARY PARTICLES; EVEN-ODD NUCLEI; FERMIONS; HADRONS; HYDROCARBONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INTERMEDIATE COUPLING; IONS; ISOTOPES; LIGHT NUCLEI; MAGNETIC RESONANCE; MATERIALS; NUCLEI; NUCLEONS; ORGANIC COMPOUNDS; PLANTS; RESONANCE; SEPARATION PROCESSES; STABLE ISOTOPES

Optional Information

Notes
2 figs.; Journal article in pdf format