Isoswertiajaponin 2′'-O-β-arabinopyranoside and other flavone-C-glycosides from the Antarctic grass Deschampsia antarctica
The major flavonoid constituents of the Antarctic grass, Deschampsia antarctica, are shown to be the C-glycosylflavones, isoswertiajaponin (7-O-methylorientin) 2′'-O-β-arabinopyranoside and orientin. These are accompanied by lower levels of orientin 2′'-O-arabinopyranoside, isoswertisin (7...
| Published in: | Phytochemistry |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
Elsevier
1994
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| Subjects: | |
| Online Access: | http://nora.nerc.ac.uk/id/eprint/517542/ https://doi.org/10.1016/S0031-9422(00)89660-0 |
| Summary: | The major flavonoid constituents of the Antarctic grass, Deschampsia antarctica, are shown to be the C-glycosylflavones, isoswertiajaponin (7-O-methylorientin) 2′'-O-β-arabinopyranoside and orientin. These are accompanied by lower levels of orientin 2′'-O-arabinopyranoside, isoswertisin (7-O-methylvitexin) 2′'-O-β-arabinopyranoside, acylated derivatives, isoswertisin, isoswertiajaponin and tricin. A preliminary study suggests that the overall level of flavonoids in Deschampsia increases during the Antarctic mid-summer. |
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