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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 1633-1642 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses of 2,3-Diamino-2,3-dideoxypentosesNucleophilic ring opening of the aziridino sugar 5 with sodium azide gave compound 6 with arabino-configuration. Similar treatment of 13 gave the xylo-derivative 14. Both products are contrary to the predictions of the Fürst-Plattner rule. 2,3-Diacetamido-2,3-dideoxy-D-xylopyranose (17) was prepared from 14. The mixture 20 - 23, arising from the reaction of the xylal 19 with sodium azide, was subjected to azidonitration. After substituting the nitro groups with acetate, the 2,3-diazido compounds 26 and 30 with xylo- and lyxo-configurations were obtained.
    Notes: Nucleophile Ringöffnung des Aziridin-Zuckers 5 mit Natriumazid liefert die arabino-Komponente 6. Der Aziridin-Zucker 13 reagiert mit Azid zur xylo-Verbindung 14. Beide Reaktionen verlaufen entgegen der Fürst-Plattner-Regel. Aus 14 wurde 2,3-Diacetamido-2,3-didesoxy-D-xylopyranose (17) dargestellt. Das aus dem Xylal 19 mit Azid erhältliche Gemisch 20 - 23 wird der Azidonitrierung unterworfen. Nach Austausch der Nitratreste gegen Acetat können die 2,3-Diazido-verbindungen 26 und 30 der xylo- und lyxo-Konfiguration isoliert werden.
    Type of Medium: Electronic Resource
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