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'Absolute Configuration' in keywords
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2001 (1)
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1983 (2)
1978 (1)
1Author    H.E JRequires cookie*
 Title    Viqar Uddin Ahmad* and Sabiha Qazi  
 Abstract    The absolute configuration of julifloridine is proposed to be 2 R, 3 R, 6 R through 13 C Spectra, m NMR Spectra, 
  Reference    Z. Naturforsch. 38b, 660 (1983); received December 28 1982 
  Published    1983 
  Keywords    Prosopis juliflora, Julifloridine, Absolute Configuration 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0660_n.pdf 
 Identifier    ZNB-1983-38b-0660_n 
 Volume    38 
2Author    Jörg Fleischhauer3, Sven Gabriel3, A.Ndreas Job3, D. Ieter Enders3, Axel WollmerbRequires cookie*
 Title    CD-Spectroscopic Investigations for the Determination of the Absolute Configuration of (4/?,6S,7S)-Serricomin  
 Abstract    The absolute configuration of the conformationally flexible (4i?,6S,7S)-serricornin, a non­ natural isomer of the female-produced sex pheromone of the cigarette beetle (Lasioderma serricorne), was determined by comparison of measured and calculated circular dichroism spectra. The rotational strengths were calculated by means of the semiempirical CNDO/2S-method. The total synthesis was accomplished by the SAMP/RAMP-hydrazone method. 
  Reference    Z. Naturforsch. 56b, 1344—1348 (2001); received July 26 2001 
  Published    2001 
  Keywords    Serricornin, CD Spectra, Absolute Configuration 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-1344.pdf 
 Identifier    ZNB-2001-56b-1344 
 Volume    56 
3Author    Rudolf Hansel, Jutta SchulzRequires cookie*
 Title    Notiz zur Absolutkonfiguration des Epoxipiperolids Note on the Absulute Configuration of Epoxipiperolide  
 Abstract    The epoxide-ring of (+)-5-[£rans-(Z)-2,3-epoxy-l-methoxy-propylidene]-4-methoxy-2(5H)-furanone (1) was opened hydrogenolyti-cally (palladium/charcoal) to (+)-(2S)-5-(2-hydroxy -1 -methoxy -3 -phenylpropylidene) -4 -methoxy-2(5H)-furanone (2) whose absolute configuration (2S) was determined applying Horeau's method. For the natural product (+)-l itself follows (2 S,3 Reconfiguration. 
  Reference    Z. Naturforsch. 33b, 688—689 (1978); eingegangen am 13. März 1978 
  Published    1978 
  Keywords    Piperaceae, Cinnamylidene -butenolides, Piperolide, Absolute configuration 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0688_n.pdf 
 Identifier    ZNB-1978-33b-0688_n 
 Volume    33 
4Author    Jörg Fleischhauer3, Sven Gabriel3, Dieter Enders3, Anja Nühring3, Axel WollmerbRequires cookie*
 Title    CD-Spectroscopic Investigations for the Determination of the Absolute Configuration of a-Alkylated 1,4-CycIohexanedione Derivatives  
 Abstract    The absolute configuration of the conformationally flexible six membered ring system 2-me-thyl-and 2,6-dimethyl-l,4-cyclohexanedione monoethylene acetal was determined by compar­ ison of measured and calculated CD spectra. The rotational strengths were calculated by means of the CNDO/S-method assuming R at the stereogenic center. The results were compared with the predictions made by the octant rule. The enantiomerically pure material was synthesized via the corresponding SAMP-and RAMP-hydrazones. 
  Reference    Z. Naturforsch. 55b, 1011—1014 (2000); received July 3 2000 
  Published    2000 
  Keywords    1, 4-Cyclohexanedione Derivatives, Absolute Configuration, CD Spectra 
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 TEI-XML for    default:Reihe_B/55/ZNB-2000-55b-1011.pdf 
 Identifier    ZNB-2000-55b-1011 
 Volume    55 
5Author    The Stereochemistry, F. Silybin, Hermann Lotter, H. Ildebert, W. AgnerRequires cookie*
 Title    Zur Stereochemie von Silybin  
 Abstract    The X-ray Structure of Silybin from Silybum marianum G aertn. was determined. The com ­ pound was found to be a diastereom eric m ixture (1 : 1) in the benzodioxane part of the molecule explaining several tentative aspects about the structure known from NM R-m easurem ents and HPLC-separations. Einführung 
  Reference    Z. Naturforsch. 38c, 339—341 (1983); received February 22 1983 
  Published    1983 
  Keywords    Silybin, Silybum marianum, X-Ray Structure, Absolute Configuration 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0339.pdf 
 Identifier    ZNC-1983-38c-0339 
 Volume    38