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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 1424-1433 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Albomycins, III. - Synthesis of N5-Acetyl-N5 -hydroxy-L-ornithine from L-Glutamic AcidThe hydroxamic acid N5-acetyl-N5-hydroxy-L-ornithine (2a) is of crucial importance for the biological activity of the siderochromes. L-Glutamic acid (3), a cheap and readily available starting material, can be modified selectively at the γ-carboxylic acid function after protection of the α-amino acid group. An orthogonal protecting group pattern is the precondition for selective cleavages to partially protected amino acids and to the hydroxamic acid 2a.
    Notes: Die Hydroxamsäure N5-Acetyl-N5-hydroxy-L-ornithin (2a) besitzt entscheidende Bedeutung für die biologische Wirkung der Siderochrome. Die preiswerte L-Glutaminsäure (3) kann nach Schutz der α-Aminosäuregruppierung selektiv an der γ-Carbonsäurefunktion derivatisiert werden. Ein orthogonales Schutzgruppenmuster ist Voraussetzung für selektive Spaltungen zu partial geschützten Aminosäuren und zur Hydroxamsäure 2a.
    Type of Medium: Electronic Resource
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