نتایج جستجو برای: germacrene d

تعداد نتایج: 577649  

2003
Marit Stranden Hanna Mustaparta

discrimination of the germacrene D enantiomers in the moth Helicoverpa armigera. (2003) (-)-Germacrene D receptor neurones in three species of heliothine moths: structure-activity relationships. H. (2002), (-)-Germacrene D increases attraction and oviposition by the tobacco budworm moth Heliothis virescens. Chem. Senses, 27: 505-509 Papers are printed with permission from the publishers.

Journal: :Molecules 2009
Koji Noge Judith X Becerra

The volatile components of the leaves of five Bursera species, B. copallifera, B. exselsa, B. mirandae, B. ruticola and B. fagaroides var. purpusii were determined by gas chromatography-mass spectrometry (GC-MS). Germacrene D was one of the predominant components (15.1-56.2%) of all of these species. Germacrene D has also been found in other Bursera species and some species of Commiphora, the s...

2009
Maria C. Palazzo Hilary L. Wright Brittany R. Agius Brenda S. Wright Debra M. Moriarity William A. Haber William N. Setzer

The leaf essential oils of six members of the Annonaceae from Monteverde, Costa Rica (Desmopsis bibracteata, Desmopsis microcarpa, Guatteria costaricensis, Guatteria diospyroides, Guatteria oliviformis, and Unonopsis costaricensis) have been obtained by hydrodistillation and analyzed by GC-MS in order to compare and contrast the volatile chemical compositions of these species. The essential oil...

Journal: :Chemical senses 2002
M Stranden A-K Borg-Karlson H Mustaparta

Plants release complex mixtures of volatiles, including chiral constituents. In the search for the biologically relevant plant odorants, gas chromatography linked to electrophysiological recordings from single receptor neurons has been employed. In heliothine moths, including the females of the Eurasian cotton bollworm moth Helicoverpa armigera, a major type of receptor neurons is identified, s...

Journal: :iranian journal of pharmaceutical research 0
m mirza m najafpour navaei m dini

hydro-distilled volatile oils from the flowers and leaves of eupatorium cannabinum l. which gathered in touchal on mountain alborz (tehran province) in iran were investigated mainly by a combination of gc and gc/ms. thirty-nine components were identified in the oils. the main constituents of the essential oils in flowers and leaves were germacrene d (27.3%, 37.1%), gemacrene b (12.4%, 11.7%) an...

Journal: :International Journal of Molecular Sciences 2008

Journal: :iranian journal of pharmaceutical research 0
f askari f sefidkon

volatile components of three parts of pimpinella tragium vill. (umbelliferae family) from iran were investigated qualitatively and quantitatively for the first time. essential oils were isolated by hydro-distillation from stems plus leaves, inflorescence and seeds of p. tragium individually. the plant materials were collected from polour (northeast of tehran province). the yields of the stems p...

Journal: :Agricultural and Biological Chemistry 1979

Journal: :International Journal of Molecular Sciences 2008
William N. Setzer

Essential oils that contain large concentrations of germacrene D are typically accompanied by cadinane sesquiterpenoids. The acid-catalyzed cyclization of germacrene D to give cadinane and selinane sesquiterpenes has been computationally investigated using both density functional (B3LYP/6-31G(*)) and post Hartree-Fock (MP2/6-31G(* *)) ab initio methods. The calculated energies are in general ag...

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