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  • Articles  (2)
  • 1970-1974  (2)
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  • Articles  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 644-649 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Naturally Occuring Terpene Derivatives, XXVIII. On a New Sesquiterpene Derivative from Artemisia Ponica L.The polar parts of the root extract from Artemisia ponica L. contain a new sesquiterpene-diol, which is linked with isofraxidin. The structure 2 is established by means of the spectroscopie data of the natural product and of some derivatives.
    Notes: Die polaren Anteile des Wurzelextrakts von Artemisia pontica L. enthalten ein neues Sesquiterpen-diol, das mit Isofraxidin verknüpft ist. Die Struktur 2 wird durch die spektroskopischen Daten des Naturstoffs und einiger Derivate geklärt.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 3026-3034 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Lupin-Alkaloids, XL. Preparations and Reactions of Cyclic Enamines and Imonium SaltsBy reduction of lactams with diisobutylaluminium hydride enamines as well as the corresponding salts can be prepared. The stereochemistry of their dimerisation as well as several reactions with different types of compounds have been investigated. Michael- and Mannich-reactions, also intramolecular, are possible applications. The last method leads to a new stereospecific synthesis of spartein.
    Notes: Durch Reduktion von Lactamen mit Diisobutylaluminiumhydrid können Enamine sowie die entsprechenden Imoniumsalze dargestellt werden. Die Stereochemie ihrer Dimerisierung sowie mehrere Reaktionen mit verschiedenen Typen von Verbindungen werden untersucht. Michael- und Mannich-Reaktionen, auch intramolekular, sind mögliche Anwendungen. Die letztgenannte Methode führt zu einer neuen stereospezifischen Spartein-Synthese.
    Type of Medium: Electronic Resource
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