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'HPLC' in keywords Facet   Publication Year 1988  [X]
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1988[X]
1Author    Reinhard Strauss, Ralf SteudelRequires cookie*
 Title    Darstellung von Cyclopentadekaschwefel (S 15 ) aus Titanocenpentasulfid und Sulfurylchlorid [1] Synthesis of Cyclopentadecasulfur (S 15 ) from Titanocene Pentasulfide and Sulfuryl Chloride [1]  
 Abstract    Titanocene pentasulfide reacts with sulfuryl chloride under suitable conditions to give a mixture of mainly S 10 , S 15 , and S 2 n which can be separated by repeated crystallization and precipitation. Pure S, 5 is obtained as a lemon-yellow powder at low temperatures which transforms to a sticky mass at 20 °C. Solutions of S 15 in CS 2 are stable at 20 °C for months. Pure S 15 does not decompose at 20 °C within a few hours. Raman spectra of S 15 show stretching vibrations at 409—480 cm" 1 and bending and torsional modes at < 270 cm H . 
  Reference    Z. Naturforsch. 43b, 1151—1155 (1988); eingegangen am 20. Mai 1988 
  Published    1988 
  Keywords    Elemental Sulfur, Raman Spectra, HPLC, Sulfur Rings 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1151.pdf 
 Identifier    ZNB-1988-43b-1151 
 Volume    43 
2Author    Rudolf Brenneisen, Stefan BornerRequires cookie*
 Title    The Occurrence of Tryptamine Derivatives in Psilocybe semilanceata  
 Abstract    The content of tryptamine derivatives in Psilocybe semilanceata, a popular hallucinogenic mushroom, was measured by high-performance liquid chromatography. Most of the 52 samples have been collected at several localities in Switzerland during a 1—5 year period. The content of psilocybin and baeocystin varied in the range of 0.21—2.02% and 0.05—0.77%, respectively, whereas only traces of psilocin were present. The variability of the alkaloid level depending on origin, year of collection, size and part of mushrooms is discussed. 
  Reference    Z. Naturforsch. 43c, 511—514 (1988); received April 14/May 18 1988 
  Published    1988 
  Keywords    Psilocybe semilanceata, Hallucinogenic Mushrooms, Psilocybin, Baeocystin, HPLC 
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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0511.pdf 
 Identifier    ZNC-1988-43c-0511 
 Volume    43 
3Author    Gerhard Sandmann, Peter BögerRequires cookie*
 Title    Accumulation of Protoporphyrin IX in the Presence of Peroxidizing Herbicides  
 Abstract    Peroxidizing herbicides were assayed for their capacity to accumulate tetrapyrrole-like com-pounds in the liquid culture medium when growing the xanthophycean alga Bumilleriopsis filifor-mis. We have isolated and purified this compound by HPLC. For identification optical, fluores-cence, NMR and mass spectroscopy were employed. All these techniques showed that the accu-mulation product is protoporphyrin IX. This tetrapyrrole was found, although to a different extent, using either chlorophthalim, oxadiazon, oxyfluorfen or LS 82-556. Accumulation of proto-porphyrin IX caused by peroxidizing compounds was also found in light-grown Bumilleriopsis cells and heterotrophically (dark-)grown Scenedesmus cells, but neither in light-grown Scenedes-mus cells nor in dark-grown Neurospora. 
  Reference    Z. Naturforsch. 43c, 699—704 (1988); received August 10 1988 
  Published    1988 
  Keywords    Bumilleriopsis, FAB Mass Spectrometry, HPLC, NMR Spectrometry, Chlorophthalim, Neuro-spora 
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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0699.pdf 
 Identifier    ZNC-1988-43c-0699 
 Volume    43