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1996 (1)
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1Author    Viqar Uddin, Ahmad, Kaniz Fizza, H.E JRequires cookie*
 Title    Structure of a New Eudesmane Sesquiterpene Argutinin from Pluchea arguta Boiss  
 Abstract    A new eudesmane sesquiterpene, argutinin (1) has been isolated from Pluchea arguta Boiss. Its structure has been elucidated by spectroscopic methods. 
  Reference    Z. Naturforsch. 43b, 911—913 (1988); received February 26 1988 
  Published    1988 
  Keywords    Sesquiterpene, Eudesmane, Pluchea arguta, Compositae 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0911.pdf 
 Identifier    ZNB-1988-43b-0911 
 Volume    43 
2Author    Rosa Marí, Giner, Marí, Jesús Cuellar, Marí, Carmen Recio, SalvadorM. Áñez, JoséR. Luis, ÍosRequires cookie*
 Title    Chemical Constituents of Urospermum picroides  
 Abstract    Seven phenolic compounds were isolated from the aerial parts of U. picroides. They were identified by UV spectra, TLC and HPLC-DAD as luteolin, luteolin-7-glucoside, quercetin, quercetin-3-galactoside, kaempferol-3-galactoside, chlorogenic and isochlorogenic acids. Other phenolics were characterized by HPLC-DAD analysis: gallic, protocatechuic, caffeic, ferulic and isoferulic acids, quercetin-3-glucoside and luteolin-4'-glucoside. 
  Reference    Z. Naturforsch. 47c, 531—534 (1992); received February 2/March 6 1992 
  Published    1992 
  Keywords    Urospermum picroides, Lactuceae, Compositae, Flavonoids, Phenolic Acids 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0531.pdf 
 Identifier    ZNC-1992-47c-0531 
 Volume    47 
3Author    Pedro Cuadra2, JeffreyB H ArbornebRequires cookie*
 Title    Changes in Epicuticular Flavonoids and Photosynthetic Pigments as a Plant Response to UV-B Radiation  
 Abstract    Treatment of Gnaphalium vira-vira plants with UV-B radiation caused changes in plant growth and in plant chemistry. The leaf surface contained two O-methylated flavones, araneol and 7-O-methylaraneol. HPLC analysis showed that 20 days of UV-B radiation increased the synthesis of 7-O-methylaraneol at the expense of araneol. Spectrophotometric analysis of the photosynthetic pigments showed that UV-B radiation also increases the pigment content in treated plants. A nother U V alteration is epidermal hair damage, as observed in SEM pictures of treated leaves. This combination o f physiological and phytochemical effects may be interpreted as a plant response to UV-B stress. 
  Reference    Z. Naturforsch. 51c, 671 (1996); received April 29/June 10 1996 
  Published    1996 
  Keywords    Gnaphalium vira-vira, Compositae, Epicuticular Flavonoids, Lipophilic Flavones, U V-B Radiation 
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 TEI-XML for    default:Reihe_C/51/ZNC-1996-51c-0671.pdf 
 Identifier    ZNC-1996-51c-0671 
 Volume    51