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  • 1975-1979  (1)
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    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Antamanide, XXII.  -  Exchange of Phenylalanine 5,6,9 and 10 in Antamanide for L-CyclohexylalanineThe following analogs of antamanide (AA) containing L-Cyclohexylalanine (Cha) instead of phenylalanine were synthesized on a solid phase: [Cha5]-AA (1d) [2.5], [Cha6]-AA (1e) [0.5], [Cha5, Cha10]-AA (1f) [10-15], [Cha6, Cha9]-AA (1g), [1-2] and [Ala1, Cha6, Cha9]-AA (1h) [〉10]. The figures in brackets are the doses in mg per kg, which fully protect the white mouse from lethal poisoning by 5 mg phalloidin per kg. They show that the antitoxic effectiveness is least altered by an exchange of phenylalanine 6 but most altered by exchange of phenylalanine 10, thus confirming earlier results with tyrosine3).
    Notes: Es wurden an der festen Phase die folgenden Analogen des Antamanids (AA) synthetisiert, die anstelle des Phenylalanins im Naturstoff L-Cyclohexylalanin (Cha) enthalten: [Cha5]-AA (Id) [2.5], [Cha6]-AA (1e) [0.5], [Cha5, Cha10]-AA (1f) [10-15], [Cha6, Cha9]-AA (1g) [1-2] und [Ala1, Cha6, Cha9]-AA (1h) [〉 10]. Die Zahlen in eckigen Klammern bedeuten die Mengen in mg pro kg, die die weiße Maus vor dem Tod durch 5 mg Phalloidin pro kg schützen. Aus ihnen ist abzulesen, daß der Austausch von Phenylalanin 6 die biologische Aktivität am geringsten, der von Phenylalanin 10 am stärksten betrifft, was etwa mit früher3) mit Tyrosin erhaltenen Ergebnissen übereinstimmt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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