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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 240-249 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Germacranolides, Heliangolides, and Elemanolides from Cronquistianthus chachapoyensisThe aerial parts of Cronquistianthus chachapoyensis afforded in addition to some known compounds eight new sesquiterpenelactons, the germacranolide acids 1 and 2 and the closely related elemanolides 5 and 6, the germacranolides 7 and 9 as well as the heliangolides 13 and 15 which only could be isolated as their acetates (8, 10, 14, and 16). The structures were elucidated by spectroscopic methods and some chemical transformations.
    Notes: Die oberirdischen Teile von Cronquistiathus chachapoyensis ergeben neben einigen bekannten Verbindungen acht neue Sesquiterpenlactone, die Germacranolidsäuren 1 und 2 und die nahe verwandten Elemanolide 5 und 6, die Germacranolide 7 und 9 sowie die Heliangolide 13 und 15, die nur als Acetate isoliert werden konnten (8, 10, 14 und 16). Die Strukturen werden durch spektroskopische Methoden und einige chemische Umwandlungen erklärt.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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