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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 1257-1266 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Steiractinolides from Aspilia and Wedelia SpeciesThe reinvestigation of the polar fractions of Aspilia parvifolia afforded eight further steiractinolides and one geranylgeraniol derivative. The aerial parts of a new Wedelia species gave three derivatives of 4,5-dihydrosteiractinolides. The structures were elucidated by detailed 1H NMR studies. The configurations of some eudesmanolides from Wedelia trilobata were corrected and the absolute configuration of the steiractinolides has been determined by using the Horeau method.
    Notes: Die erneute Untersuchung der polaren Fraktionen von Aspilia parvifolia ergibt acht weitere Steiractinolide und ein Geranylgeraniol-Derivat. Die oberirdischen Teile einer neuen Wedelia-Art liefern drei Derivate von 4,5-Dihydrosteiractinolid. Die Strukturen werden durch eingehende 1H-NMR-Untersuchungen geklärt. Die Konfigurationen einiger Eudesmanolide aus Wedelia trilobata werden korrigiert, und die absolute Konfiguration der Steiractinolide wird mit Hilfe der Horeau-Methode bestimmt.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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