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Helenium amarum

Tenulin Helenium amarum (bitter sneezeweed) Bitter... [Pg.413]

Interest in the cytotoxic properties of extracts of Helenium amarum (bitter-weed) has resulted in the isolation of a number of sesquiterpenoid lactones e.g. tenulin, helenalin, etc.). The structure of heleniamarin (587), a recently discovered member of this group, has been determined by X-ray crystallographic analysis. ... [Pg.150]

Sesquiterpene lactones from Parthenium species were strongly inhibitory to growth of larvae of Helicoverpa zea and Spodoptera exigua (Isman and Rodriguez, 1983). Tenu-lin (111), the major sesquiterpene lactone of Helenium amarum, imparts a bitter taste to milk and is toxic to livestock. Helenalin (112) from Helenium microcephalum is toxic to several mammalian species in oral doses as low as 85 fjLg/kg. Hymenoxys odorata, from which a toxin, hymenovin... [Pg.390]

See other pages where Helenium amarum is mentioned: [Pg.52]    [Pg.10]    [Pg.737]    [Pg.739]    [Pg.52]    [Pg.10]    [Pg.737]    [Pg.739]    [Pg.730]   
See also in sourсe #XX -- [ Pg.10 , Pg.20 ]

See also in sourсe #XX -- [ Pg.10 , Pg.20 ]

See also in sourсe #XX -- [ Pg.390 ]



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