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  • Analytical Chemistry and Spectroscopy  (2)
  • 3-Vinylindoles  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 127 (1996), S. 97-102 
    ISSN: 1434-4475
    Keywords: 3-Vinylindoles ; Carbazoles ; Diels-Alder reactions ; Cytotoxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die aus den methoxysubstituierten 3-Vinylindolen1 und2 zugänglichen Cycloaddukte3,5 und7 lassen sich mitDDQ zu den coplanar-anellierten Carbazolen4,6 und8 dehydrieren. Verbindung4a, die auch durch eine Röntǵenstrukturanalyse charakterisiert wurde, zeigt signifikante Cytotoxizität gegen Humantumor-Zellinien (K562 und RXF93).
    Notes: Summary The cycloadducts3,5, and7, readily available from methoxy-substituted 3-vinylindoles1 and2, were dehydrogenated withDDQ to the coplanar [a]-anellated carbazoles4,6, and8. Compound4a, also characterized by X-ray structural analysis, shows significant cytotoxicity against K562 und RXF393 human tumor cell lines.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. 204-206 
    ISSN: 0749-1581
    Keywords: 2D EXSY NMR ; Complete line-shape analysis ; Aroylcyanoketene-S,S-dimethylacetals ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The applicability of 2D EXSY NMR spectroscopy for studying quantitatively the dynamic behaviour in three aroylcyanoketene-S, S-dimethylacetals was tested by means of 1H NMR spectroscopy. It can be concluded that the method is a reasonable qualitative supplement to complete line-shape analysis.
    Additional Material: 1 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. 212-222 
    ISSN: 0749-1581
    Keywords: Dynamic NMR ; 13C NMR ; Push-pull alkenes ; Restricted C,C and C,N rotation ; π-Electron density distribution ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Push-pull alkenes with variable structure were investigated with respect to the influence of the different substituents at the central C,C double bond on the dynamic behaviour of this type of compound. 1H and 13C NMR spectroscopic investigations were carried out for ketene-S,S-, -S,N- and -N,N-acetals. HMO calculations were employed to discuss the related π-electron density distributions.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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