ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 2786-2801 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stereoselective Synthesis of Alcohols, IX. Absolute configuration of StegobinoneDiastereoselective as well as enantioselective conversion of the boronate 4 into the homoallyl alcohol 5 served as basis for the synthesis of optically active stegobinone isomers. Material with the correct absolute configuration at C-2 was obtained starting from (3S)-3-hydroxy-2-methyl-butyrate 17. The CD spectrum of the isomer 20B corresponded to that of the natural product. Its Configuration was assigned as 2S, 3R, 7R and was substantiated by an X-ray structure determination of 7-epistegobinone (20A).
    Notes: Eine diastereo- und enantioselektive Synthese des Homoallylalkohols 5 aus dem Boronester 4 eröffnete den Zugang zu optisch aktiven Isomeren des Stegobinons. Stegobinon-Isomere mit der richtigen absoluten Konfiguration an C-2 wurden ausgehend von (3S)-3-Hydroxy-2-methylbuttersäureester 17 dargestellt. Das CD-Spektrum des Isomeren 20B entsprach dem des Naturstoffs. Daraus wurde die konfiguration zu 2S, 3R, 7R für das natürliche Stegobinon abgeleitet und durch eine Röntgenstrukturanalyse des 7-Epistegobinons (20A) erhärtet.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...