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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 1972-1977 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: ( + )-Biotin from D-ArabinoseStarting from D-arabinose, Wittig-reaction of the partially protected derivative 8 afforded the intermediate 17 which can be transformed into ( + )-biotin (1).
    Notes: Aus D-Arabinose wird über eine Wittig-Reaktion des teilgeschützten Derivates 8 das Zwischen-produkt 17 gewonnen, das in ( + )-Biotin (1) übergeführt werden kann.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 14 (1980), S. 155-156 
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: High field high resolution 13C NMR spectroscopy allows the quantitative determination of a mixture of the four diastereomers in racemic α-tocopherol.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 695-704 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reduction of Hydroxyketones with BoranesThe hydroxyketones 1-9 were reduced with biborane, (1,1,2-trimethylpropyl)borane and monochlorborane to give cis/trans-mixtures of the corresponding diols. The influence of the hydroxy function and of the position of substitution on the stereoselectivity of the reduction have been investigated.
    Notes: Die Hydroxyketone 1-9 wurden mit Diboran, (1,1,2-Trimethylpropyl)boran und Monochlorboran zu cis/trans-Gemischen der entsprechenden Diole reduziert. Anhand der erhaltenen Isomerenverhältnisse wird der Einfluß der Hydroxyfunktion und der Substituentenposition auf die Stereoselektivität Reduktion untersucht.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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