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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 2380-2383 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Formation of Isomers in the Reaction of Benzofurazan N-Oxides with Phenolate AnionsBenzofurazan 1-oxide 1 reacts with 4-aminophenol in the presence of NaOCH3 to form the isomeric phenazine 5,10-dioxides 3, which are reduced to phenazines 4.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Spirosesquiterpenelactones, Germacranolides, and Eudesmanolides from Wunderlichia mirabilisA reinvestigation of the aerial parts of Wunderlichia mirabilis afforded in addition to known compounds ten sesquiterpenelactones, three cis-12,6-germacranolides (7-9), three eudesmanolides (11, 13 and 14), an elemanolide (12) which may be an artifact, and three rearranged eudesmanolides, the spiro compounds 17-19 as well as ylangenyl acetate (1). The structures were elucidated by high-field 1H NMR spectroscopy and some chemical transformations. The stereochemistry of wunderolide (10) and of two onoseriolide (24 and 25) derivatives, which were isolated previously, are corrected.
    Notes: Eine erneute Untersuchung der oberirdischen Teile ovn Wunderlichia mirabilis ergibt zusätzlich zu bekannten Verbindungen zehn Sesquiterpenlactone, drei cis-12,6-Germacranolide (7-9), drei Eudesmanolide (11, 13 und 14), ein Elemanolid (12), das ein Artefact sein könnte, und drei umgelagerte Eudesmanolide, die Spiroverbindungen 17-19 sowie Ylangenylacetat (1). Die Strukturen werden durch Hochfeld-1H-NMR-Spektroskopie und einige chemische Umwandlungen geklärt. Die Stereochemie von Wunderolid (10) und von zwei Onoserioliden (24 und 25), die früher isoliert wurden, wird korrigiert.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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