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- W2079755002 abstract "Als Ausgangsstoffe zur Darstellung von 6-Aza-sitostan-Derivaten werden 3β-Acetoxy-5-oxo-5.6-seco-sitostan-6-carbonsaure (1), 3β-Acetoxy-5-oxo-5.7-seco-6-nor-sitostan-7-carbonsaure (8), B-Nor-sitosterin (11) und weitere Umwandlungsprodukte des Sitosterins dargestellt. Das Verhalten der Ketosaure 1 gegen Alkalien wird untersucht. Das Azid von 1 ergibt, nach Curtius in essigsaurem Medium abgebaut, unter Ringschlus und Abspaltung von Essigsaure Δ3.5-6-Aza-sitostadien (12). Das amorphe Isocyanat von 1 last sich durch Behandeln mit Salzsaure in das (6′ 5)-Lacton 15 der 3β-Acetoxy-5α-hydroxy-6-aza-sitostan-N-carbonsaure uberfuhren, das mit methanol. KOH in 6-Aza-sitosterin (16) ubergeht." @default.
- W2079755002 created "2016-06-24" @default.
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- W2079755002 date "1967-05-17" @default.
- W2079755002 modified "2023-09-27" @default.
- W2079755002 title "Seco- und Aza-Derivate des Sitosterins" @default.
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- W2079755002 doi "https://doi.org/10.1002/jlac.19677030119" @default.
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