| Structure Identification: |
| Nat Prod Commun. 2012 Oct;7(10):1305-7. | | Two new flavonoids from the seeds of Derris scandens.[Pubmed: 23156994] |
METHODS AND RESULTS:
Two new flavonoids, (2S)-3',4',5'-trimethoxyflavanone (1) and 2'-hydroxy-2,4-dimethoxy-4'-O-[(E)-3,7-dimethyl-2,6-octadienyl]chalcone (2), together with a known pterocarpene, flemichapparin B (3), and a known rotenoid, Dehydrodeguelin (4), were isolated from the seeds of Derris scandens.
CONCLUSIONS:
Their structures were determined by means of extensive 1D and 2D NMR spectral studies. | | Phytochemistry. 2008 Jan;69(1):258-63. | | Rotenoid derivatives and other constituents of the twigs of Millettia duchesnei.[Pubmed: 17640692] |
METHODS AND RESULTS:
Three prenylated rotenoids, elliptol, 12-deoxo-12alpha-methoxyelliptone and 6-methoxy-6a,12a-Dehydrodeguelin were isolated from the twigs of Millettia duchesnei, together with the known compounds, 6a,12a-Dehydrodeguelin, 6-hydroxy-6a,12a-Dehydrodeguelin, 6-oxo-6a,12a-Dehydrodeguelin, elliptone, 12a-hydroxyelliptone and eriodictyol. Their structures were elucidated on the basis of spectral data and comparison with information reported in the literature and with authentic specimens for some known compounds.
CONCLUSIONS:
The full NMR data of 6-oxo-6a,12a-Dehydrodeguelin and 6-hydroxy-6a,12a-Dehydrodeguelin are reported here for the first time. |
|
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