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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 725 (1969), S. 238-240 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 3H-DesmethylphalloinA radioactive desmethylphalloin (2) is obtained by reduction of the CO-group of ketophalloidin (1) with 3H-containing NaBH4. It has almost the same toxicity as phalloidin (LD50=2.2 mg/kg body weight of the white mouse). As a consequence of the relatively high radioactivity (220 μCi/mg) 2 gives during storing a degradation product, which can be separated by chromatography on Sephadex G-25 or LH-20 using water as eluent, and whose UV-spectrum indicates a sulfoxide structure.
    Notes: Durch Reduktion der Ketogruppe des Ketophalloidins (1) mit 3H-haltigen NaBH4 wird ein radioaktives Desmethylphalloin (2) erhalten, das etwa dieselbe Toxizität wie Phalloidin besitzt. Infolge der hohen spezif. Aktivität (220 μCi/mg) entsteht beim Lagern aus 2 ein chromatographisch an Sephadex G-25 oder LH-20 in Wasser abtrennbares Zersetzungsprodukt, dessen UV-Absorptionskurve auf das Vorliegen einer Sulfoxid-Struktur hindeutet.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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