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Colour reaction of cardiotonic cardenolid glycosides with sodium nitroprusside

URN to cite this document:
urn:nbn:de:bvb:355-epub-157200
DOI to cite this document:
10.5283/epub.15720
Vogt, A.F. ; Wiegrebe, Wolfgang
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Date of publication of this fulltext: 08 Jul 2010 04:53


Abstract

Digitoxin (1) and digitoxigenin (2) react with sodium nitroprusside [disodium-pentakis (cyano-C)-nitrosy1-ferrate(II)] under weakly basic conditions forming the corresponding complexes 3 and 4, which were characterized by elementary analysis and IR-spectra. 3 and 4 are cleaved by cyanide or carbon dioxide/dil. acetic acid to the C-21-oximes 11 and 12, respectively. Digitoxin (1) und ...

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