71149-55-8Relevant articles and documents
POTENTIAL ALLELOPATHIC ACTIVITY OF SEVERAL SESQUITERPENE LACTONE MODELS
Macias, Francisco A.,Galindo, Juan Carlos G.,Massanet, Guillermo M.
, p. 1969 - 1978 (2007/10/02)
A collection of 12 natural and synthetic sesquiterpene lactones with eudesmanolide, melampolide, cis,cis-germacranolide, and guaianolide skeletons have been prepared and tested as allelochemicals.The effect of a series of aqueous solutions at 10-4-10-9 M of this collection is evaluated.The specific structural requirements related to their activity is discussed.The natural sesquiterpene lactones soulangianolide A, melampomagnolide A and B, zaluzanin C and isozaluzanin C have been synthesized from costunolide, parthenolide and dehydrocostuslactone using SeO2 and tert-butylhydroperoxide.The structures of the synthetic compounds were established by NMR spectroscopy. Key Word Index - Sesquiterpene lactones; melampolides; cis,cis-germacranolides; guaianolides; eudesmanolides; allelopathy; Lactuca sativa.
NOVEL MELAMPOLIDES FROM MAGNOLIA x SOULANGIANA 'LENNEI'
El-Feraly, Farouk S.
, p. 2239 - 2242 (2007/10/02)
Two melampolides, soulangianolide A and soulangianolide B were isolated from the leaves of Magnolia x soulangiana 'Lennei'.Their stereochemical structures were established by spectroscopic means, and by chemical correlation with costunolide and laurenobiolide respectively.--Key Word Index--Magnolia x soulangiana; Magnoliaceae; melampolides; costunolide; laurenobiolide; NMR.