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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 2173-2184 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of the Tetrose Building Unit of the Chromomycinone Side Chain from D-GalactoseApplication of the reaction sequence isopropylidenation, benzylation, and acetal cleavage to ethyl β-D-galactofuranoside (1) leads to the diol 4. The fucose derivative 15 is prepared from 4 by different routes and further transformed into its methyl ether 17. Following hydrogenolysis to 18 this compound is oxidatively cleaved using periodic acid, and acetal formation yields the D-threose synthon 20 of the chromomycinone side chain.
    Notes: Aus Ethyl-β-D-galactofuranosid (1) wird nach Isopropylidenierung, Benzylierung und saurer Acetalspaltung das Diol 4 erhalten. Auf verschiedenen Wegen läßt sich daraus das Fucosederivat 15 darstellen und zum Methylether 17 umsetzen. Nach Hydrogenolyse zu 18 ist durch Periodatspaltung und saure Acetalisierung das D-Threose-Synthon 20 der Chromomycinon-Seitenkette zu gewinnen.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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