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  • 1965-1969  (1)
  • 1965  (1)
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  • 1965-1969  (1)
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  • 1
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Treatment of the 6,7,8-trimethoxy-substituted 1,2,3,4-tetrahydroisoquinoline I with 20% aqueous HCl yields predominantly the corresponding 6,7,8-trihydroxy derivative II. The analogously substituted 3,4-dihydroisoquinoline IV and isoquinoline XXI are converted into their 6,8-dimethoxy-7-hydroxy derivatives V and XXII under these conditions. The constitution of these phenols was established by synthesis and degradation.
    Notes: Zusammenfassung Die Behandlung des 6,7,8-trimethoxy-substituierten 1,2,3,4-Tetrahydroisochinolins (I) mit 20proz. wäßr. HCl ergibt zur Hauptsache das entsprechende 6,7,8-Trihydroxyderivat II. Die Behandlung des analog substituierten 3,4-Dihydroisochinolins IV und Isochinolins XXI führt hauptsächlich zu den 6,8-dimethoxy-7-hydroxy-substituierten Isochinolinverbindungen V und XXII, unter selektiver Spaltung der in 7-Stellung befindlichen Methoxyl-gruppe. Die Konstitution von V und XXII konnte durch Synthese und Abbau bewiesen werden.
    Type of Medium: Electronic Resource
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