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1997 (2)
1Author    Kaleab Asres, Bandreas Tei, Bmichael WinkRequires cookie*
 Title    Quinolizidine Alkaloids of Platycelphium vöense (Engl.) Wild (Leguminosae)  
 Abstract    13 Alkaloids were identified in leaves and twigs of Platycelphium vöense (a monotypic genus in the tribe Sophoreae) by capillary G LC and GLC-MS. Cytisine, N-methylcytisine, anagyrine and 5,6-dehydrolupanine fig­ ured as major and N-formylcytisine, N-acetylcytisine, baptifoline, thermopsine, isolupanine, and rhombifoline as minor alkaloids in both leaves and twigs. Lupanine occurred in considerable amount in the leaves and as a minor component in the twigs. The rare alkaloid, 6ß-hydroxylupanine, was detected only in the leaves while N-ethylcytisine was shown to be a minor constituent of the twigs only. 
  Reference    Z. Naturforsch. 52c, 129—131 (1997); received October 17/November 11 1996 
  Published    1997 
  Keywords    Platycelphium vöense, Leguminosae, Quinolizidine Alkaloids, Capillary Gas Chromatography (G L C ), GLC-Mass Spectrometry 
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 TEI-XML for    default:Reihe_C/52/ZNC-1997-52c-0129_n.pdf 
 Identifier    ZNC-1997-52c-0129_n 
 Volume    52 
2Author    Z. NaturforschRequires cookie*
 Abstract    A ssem El-Shazlya c, A n d reas Teic, L udger W itteb, M äher E l-D om iatya and M ichael W inkc a D epartm ent The alkaloid composition of H yoscyam us boveanus, H. desertorum, H. muticus and H. albus was investigated by capillary GLC and GLC-mass spectrometry. Altogether 39 alka­ loids of the tropane and pyrrolidine types were identified. Several alkaloids were found in the different species for the first time, e.g., 22 alkaloids in H. boveanus, 13 in H. desertorum, 24 in H. muticus and 4 in H. albus. 3ß-Hyoscyamine, dehydrohyoscyamine, phyllalbine, 3a-phenylacetyltropane, phenylacetylscopine as well as phygrine and 2,3-diacetonyl-N-methyl-pyrrolidine are apparently new for the genus Hyoscyamus. Alkaloid profiles and alkaloid contents of flowers, fruits, leaves, stems and roots were determined and their chemoecological functions discussed. 
  Reference    Z. Naturforsch. 52c, 729—739 (1997); received August 15/September 11 1997 
  Published    1997 
  Keywords    Tropane Alkaloids, Capillary GLC, GLC-Mass Spectrometry, Solanaceae, Hyoscyamus, Chemical Ecology 
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 TEI-XML for    default:Reihe_C/52/ZNC-1997-52c-0729.pdf 
 Identifier    ZNC-1997-52c-0729 
 Volume    52