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Stereochemie von Betanidin und Isobetanidin. 8. Mitteilung. Zur Konstitution des Randenfarbstoffes Betanin

✍ Scribed by M. E. Wilcox; H. Wyler; André S. Dreiding

Publisher
John Wiley and Sons
Year
1965
Tongue
German
Weight
913 KB
Volume
48
Category
Article
ISSN
0018-019X

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Zur Struktur des Betanidins. 6. (vorläuf
Zur Struktur des Betanidins. 6. (vorläufige) Mitteilung. Über die Konstitution des Randenfarbstoffes Betanin
✍ H. Wyler; T. J. Mabry; Andre S. Dreiding 📂 Article 📅 1963 🏛 John Wiley and Sons 🌐 German ⚖ 268 KB 👁 1 views

## Abstract A choice between structures I and III for betanidin is now possible in favour of I on the basis of the formation of a well‐characterized di‐O‐acetylderivative (II). The instability of betanidin and its ready transformation into other products at elevated pH's are shown to be due to its

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## Abstract Two aglucones of betanin, called betanidin and __iso__betanidin, are described. Empirical formulas (C~19~H~18–20~O~8~N~2~) and certain structural features are deduced for them. Degradations of the aglucones are shown to yield indole and pyridine compounds.