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Planta Med 1973; 24(8): 371-374
DOI: 10.1055/s-0028-1099511
DOI: 10.1055/s-0028-1099511
NEW ALKALOIDS FROM ERYTHROPHLEUM SPECIES
1 Paper presented at the „20. Tagung der Gesellschaft für Arzneipflanzenforschung” Helsinki, Finland, July 20.–29.1972.Weitere Informationen
Publikationsverlauf
Publikationsdatum:
14. Januar 2009 (online)
Abstract
The lecture reports on two new alkaloids from Erythrophleum ivorense, namely: 3(3–methylcrotonyl)cassaine (VI) and a 19–hydroxy substituted alkaloid with a tentative structure (VII). The isolation of cassamide, erythrophlamide, cassaide [12] and 3β–acetoxy–7β–hydroxy–N–(β–hydroxyethyl)–N–methyl–E–13(15)–cassen–16–amide (XII) from E. guineense is also reported. The isomerism of the amide linkage in the latter compounds as well as some notes on the structure–activity relationship of erythrophleum alkaloids are discussed. Finally an investigation of E. africanum and some aspects of undiscovered erythrophleum alkaloids are mentioned.