[The replacement of oxygen in the lactone ring of cardenolides by nitrogen (proceedings)].
D000818:Animals; D002298:Cardenolides / Q000138:chemical synthesis* / Q000494:pharmacology; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007783:Lactones / Q000138:chemical synthesis* / Q000494:pharmacology; D009119:Muscle Contraction / Q000187:drug effects; D009584:Nitrogen; D010100:Oxygen
D002298:Cardenolides; D007783:Lactones; D009584:Nitrogen; D010100:Oxygen
Uber den Ersatz des Ringsauerstoffs im Lactonring der Cardenolide durch Stickstoff.