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- W1989290430 abstract "Die Substitution der 7-Methoxygruppe des α- und β-Narcotins durch andere Alkoxyreste erfolgt nur im wasserfreien System Alkohol/Alkoholat. Gleichzeitig beobachtet man Isomerisierung in Stellung 3, wobei die α-Konfiguration (5R, 3S) im Gleichgewicht bevorzugt ist. Im wasserhaltigen System ROH/KOH oder in 1N KOH erfolgt nur Isomerisierung in Stellung 3, wobei die β-Konfiguration (5R, 3R) im Gleichgewicht bevorzugt ist. Einige der neuen 7-Alkoxynarcotine wurden auf ihre antitussive Wirkung untersucht. New Reactions of Phthalidoisoquinoline Alkaloids. Alkoxy Exchange Reactions and Isomerisations of α- and β-Narcotine Substitution of the 7-methoxy group in α- and β-narcotine by other alkoxy groups occurs in an anhydrous ROH/RONa system. It is accompanied by isomerisation in position 3 with preference for the α-configuration (5R, 3S). In an alkaline aqueous system (ROH/KOH or 1N KOH only isomerisation in position 3 with preference for the β-configuration (5R, 3R) was observed. Some of the new 7-alkoxynarcotines were evaluated for their antitussive activity." @default.
- W1989290430 created "2016-06-24" @default.
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- W1989290430 date "1978-01-01" @default.
- W1989290430 modified "2023-09-27" @default.
- W1989290430 title "Neue Reaktionen an Phthalidisochinolinalkaloiden. Alkoxytauschreaktionen und Isomerisierungen an α- und β-Narcotin" @default.
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- W1989290430 doi "https://doi.org/10.1002/ardp.19783110804" @default.
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