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Die Struktur des Harpagosids. 2. Mitteilung über Iridoide
Author(s) -
Lichti H.,
von Wartburg A.
Publication year - 1966
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19660490516
Subject(s) - chemistry , saponification , moiety , aglycone , stereochemistry , enol , natural product , glycoside , organic chemistry , catalysis
The structure and configuration of harpagoside, a bitter principle from the roots of Harpagophytum procumbens DC , have been elucidated by degradation reactions and NMR. spectra. The hitherto uncertain position of a secondary hydroxyl group could be assigned to C‐6 of the aglycone moiety. As earlier postulated, harpagoside ( 1 ) as well as its saponification product, harpagide ( 12 ), belong to a series of natural enol ethers known as iridoids.
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