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Prosapogenins from Dodonaea attenuata
Author(s) -
Han Andrew Y. T.,
Van Gorkom Leon,
McFarlane Ian J.,
Barrow Kevin D.
Publication year - 1995
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/pca.2800060308
Subject(s) - sapogenin , chemistry , hydrolysis , acid hydrolysis , acetylation , organic chemistry , nuclear overhauser effect , nuclear magnetic resonance spectroscopy , stereochemistry , biochemistry , medicine , alternative medicine , pathology , gene
Saponins have been extracted from the seed of Dodonaea attenuata and converted to prosapogenins by mild acid hydrolysis. Partially acetylated derivatives of the sapogenin, R 1 ‐barrigenol, were characterized by extensive two dimensional nuclear magnetic resonance spectroscopy. The complete assignments of 1 H and 13 C resonances and nuclear Overhauser effects of these partly acetylated sapogenins has allowed a straightforward assignment of the structures of the prosapogenins, including the location of the individual ester groups and the presence of artefacts from the acidic hydrolysis conditions.