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Thermal degradation of glycosides, III. Degradation of cardenolide glycosides

✍ Scribed by Kim, Youn Chul ;Higuchi, Ryuichi ;Komori, Tetsuya ;Abe, Fumiko ;Yamauchi, Tatsuo

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 441 KB
Volume: 1990
Category: Article
ISSN: 0947-3440
DOI: 10.1002/jlac.1990199001174

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✦ Synopsis

Abstract

The thermal degradation of cardenolide glycosides consisting of different sugar moieties and aglycones was examined. On simple heating, the sugar—aglycone linkage of cardenolide glycosides having 2,6‐dideoxy sugar moieties in readily cleaved, to afford their genuine aglycones. On the contrary, cardenolide glycosides possessing 6‐deoxy sugar moieties are resistant to the degradative reaction. Besides the fission of the glycosidic linkages, some interesting reactions also took place. The pyrolyzed products were isolated by chromatography, and the structures were elucidated by spectroscopic evidence.

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