3-Oxo-12alpha-hydroxyfriedelane from Maytenus gonoclada structure elucidation by (1)H and (13)C chemical shift assignments and 2D-NMR spectroscopy

3-Oxo-12alpha-hydroxyfriedelane from Maytenus gonoclada : structure elucidation by (1)H and (13)C chemical shift assignments and 2D-NMR spectroscopy

(c) 2007 John Wiley & Sons, Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Magnetic resonance in chemistry : MRC. - 1985. - 45(2007), 10 vom: 30. Okt., Seite 895-8
1. Verfasser: Oliveira, Mauro Lúcio G (VerfasserIn)
Weitere Verfasser: Duarte, Lucienir Pains, Silva, Grácia Divina F, Filho, Sidney Augusto Vieira, Knupp, Vagner Fernandes, Alves, Fernando Gomes P
Format: Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:Magnetic resonance in chemistry : MRC
Schlagworte:Journal Article 3-oxo-12alpha-hydroxyfriedelane Carbon Isotopes Nitrogen Isotopes Triterpenes
Beschreibung
Zusammenfassung:(c) 2007 John Wiley & Sons, Ltd.
The compounds 3-oxofriedelane (1), 3beta-hydroxyfriedelane (2), 3,11-dioxofriedelane (3), 3,16-dioxofrie delane (4) and 3-oxo-12alpha-hydroxyfriedelane (5) were isolated from the hexane extract of Maytenus gonoclada Mart. (Celastraceae) leaves. Structural formula and the stereochemistry of the new pentacyclic triterpene 3-oxo-12alpha-hydroxyfriedelane (5) were established through (1)H and (13)C NMR and DEPT 135 spectral data including 2D experiments (HMBC, HMQC, COSY, and NOESY) and mass spectrometry (GC-MS)
Beschreibung:Date Completed 28.12.2007
Date Revised 04.09.2007
published: Print
Citation Status MEDLINE
ISSN:1097-458X