Browsing by Subject "Compositae"

Now showing items 1-20 of 22

    • 5-Methylcoumarin derivatives from Aphyllocladus denticulatus 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1988)
      The aerial parts of Aphyllocladus denticulatus afforded, in addition to some widespread compounds, six 5-methylcoumarin derivatives isolated previo. © 1988.
    • A heliangolide, 3-hydroxyumbelliferone derivatives and diterpenes from Bahia ambrosioides 
      Zdero, C.; Bohlmann, F.; Niemeyer Marich, August (1990)
      The aerial parts of Bahia ambrosioides afforded several germacranolides and heliangolides one of which has not been reported previously. Furthermore, in addition to widespread compounds, four 3-hydroxyumbelliferone derivatives ...
    • An unusual dimeric sesquiterpene and other constituents from Chilean Baccharis species 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1991)
      The aerial parts of B. santelicis afforded several known furoclerodanes and phenolics. In addition to known compounds an unusual dimeric sesquiterpene and five labdane derivatives were isolated from B. petiolata. The ...
    • Diterpenes and 5-methyl coumarin derivatives from Gypothamnium pinifolium and Plazia daphnoides 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1988)
      The aerial parts of Gypothamnium pinifolium afforded, in addition to three known 5-methyl coumarins, four new 5-methyl coumarins and two closely related coumaranones. Furthermore, seven diterpenes, all derived from ...
    • Diterpenes from Nardophyllum lanatum 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1990)
      The aerial parts of Nardophyllum lanatum, collected in northern Chile, gave in addition to a seco-diterpene isolated from an Argentinian collection two new cis-clerodanes and an acid derived from geranyl geraniol. The ...
    • Diterpenoids from Baccharis tola 
      San Martín Barrientos, Aurelio; Rovirosa, Juana; Becker, Rodolfo; Castillo, Mariano (1980)
      Erythroxylol-A, oleanolic acid, erythroxylol-A oxide, scopolatine, 4-hydroxy-3-methoxyacetophenone and two new diterpenes, ent-beyer-14-en-18-ol and 19-hydroxy-13-epimanoyl oxide, were isolated from B. tola. © 1980.
    • ent-Labdane glycosides from Baccharis pingraea 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1990)
      The aerial parts of Baccharis pingraea, collected in Chile, afforded, in addition to two diterpene glycosides isolated previously, 14 new ones and two of the corresponding desacyl aglycones. The structures were elucidated ...
    • Eremophilane, germacrane and shikimic acid derivatives from chilean Senecio species 
      Dupré, S.; Grenz, M.; Jakupovic, J.; Bohlmann, F.; Niemeyer, H. M. (1991)
      From 11 Chilean Senecio species eight new furoeremophilanes and eremophilanolides, eight eremophilane, one cadinane, five germacrane, one oplopanone and five shikimic acid derivatives were isolated in addition to known ...
    • Friedolabdanes and other constituents from chilean Haplopappus species 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1991)
      From the aerial parts of Haplopappus pulchellus two new labdanes and six friedolabdanes were isolated while H. arbutoides afforded in addition to known labdanes five new ones, two clerodanes and a cyperone derivative. ...
    • Furoeremophilanes and other constituents from Chilean Senecio species 
      Jakupovic, J.; Grenz, M.; Bohlmann, F.; Niemeyer, H. M. (1991)
      Investigation of five further Chilean Senecio species afforded, in addition to known compounds, four new furoeremophilanes, four eremophilanes, a germacratrienol and an acylpyrrol derivative. Structures were elucidated by ...
    • Furoeremophilanes and related compounds from Senecio pachyphyllos 
      Ahmed, Muniruddin; Niemeyer, H. M. (1991)
      In addition to known compounds, a new furoeremophilane and two pairs of epimeric acetals with an eremophilane skeleton have been isolated from Senecio pachyphyllos. The structures were elucidated by high field 1H NMR ...
    • Furolabdanes and linear diterpenes from Gutierrezia resinosa 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1992)
      The aerial parts of Gutierrezia resinosa gave 15 new diterpenes including 12 labdanes and three nerylgeraniol derivatives. The structures were elucidated by high field NMR spectroscopy. © 1992.
    • Guaianolides and other constituents from Stevia species 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1991)
      The investigation of three Stevia species afforded a large variety of known sesquiterpene lactones as well as one new guaianolide, two known longipinene derivatives, two ent-labdanes and several other common compounds. © 1991.
    • Highly oxygenated furoeremophilane derivatives from Senecio zoellneri 
      Ahmed, Muniruddin; Jakupovic, Jasmin; Bohlmann, Ferdinand; Niemeyer Marich, August (1991)
      The aerial parts of Senecio zoellneri afforded, in addition to known compounds, five oxygenated furoeremophilane derivatives and three seco-furoeremophilanolides, all of which are probably formed by oxidation of ...
    • Highly oxygenated sesquiterpenes from Polyachyrus sphaerocephalus and further constituents from chilean mutisieae 
      Pritschow, P.; Jakupovic, J.; Bohlmann, F.; Bittner, M.; Niemeyer, H. M. (1991)
      The aerial parts of Polyachyrus sphaerocephalus gave seven new eudesmane derivatives and a germacra-dien-diol while a reinvestigation of P. fuscus afforded a new caryophyllene, two nerolidolglycosides, a curcumene and two ...
    • Highly oxygenated sesquiterpenes from the subtribe nassauviinae 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1988)
      The aerial parts of Oxyphyllum ulicinum afforded, in addition to known compounds, 15 new germacrane derivatives with a 1β, 10α-epoxide, a carboxyl group at C-4, and different ester groups at C-9 and C-14. From the aerial ...
    • Notes on the genus Ophryosporus (Asteraceae, Eupatorieae) in Chile 
      Merklinger, Félix F.; Luebert Bruron, Federico (Pensoft Publishers, 2020)
      Ophryosporus Meyen is reviewed for Chile and an updated species list for the country based on herbarium records and literature review is presented. A key to the Chilean species is provided and a distribution range of taxa ...
    • Oleanolic acid content in Baccharis linearis and its effects on Heliothis zea larvae 
      Argandoña, Victor H.; Faini, Francesca (1993)
      The concentration of the triterpene oleanolic acid in leaves of Baccharis linearis varies at different stages of plant growth from 1.9 to 3.0 g kg-1 fr. wt. Larvae of Heliothis zea, starved with 1.4 mg of oleanolic acid ...
    • Phylotranscriptomic insights into Asteraceae diversity, polyploidy, and morphological innovation 
      Zhang, Caifei; Huang, Chien‐Hsun; Liu, Mian; Hu, Yi; Panero, José L.; Luebert Bruron, Federico José; Gao, Tiangang; Ma, Hong (Wiley, 2021)
      Biodiversity is not evenly distributed among related groups, raising questions about the factors contributing to such disparities. The sunflower family (Asteraceae, >26,000 species) is among the largest and most diverse ...
    • Seco-, nor-, normal and rearranged labdanes from Haplopappus parvifolius 
      Zdero, C.; Bohlmann, F.; Niemeyer, H. M. (1991)
      The aerial parts of Haplopappus parvifolius afforded 30 new diterpenes including 21 labdane derivatives, four nor-diterpenes, three rearranged ones, four seco-labdanes and one with a new carbon skeleton whose structure was ...