| Structure Identification: |
| Tetrahedron.1994 Apr 25;50(17):5203–5210. | | Structural elucidation and conformational analysis of new lignan butenolides from the leaves of bupleurum salicifolium.[Reference: WebLink] |
METHODS AND RESULTS:
From the leaves of Bupleurum salicifolium two new benzylidene-benzyl-γ-butyrolactone-type lignans salicifoline (2) and isosalicifoline (3) were isolated.
CONCLUSIONS:
The dibenzyl-butyrolactone (-)-Epinortrachelogenin (1) was also isolated and it is the first time than this lignan has been obtained from a natural source. | | Journal of Wood Science, 2004 , 50 (6) :548-551. | | Constituents from the roots of Taxus cuspidata[Reference: WebLink] |
METHODS AND RESULTS:
The known propelargonidin, afzelechin-(48)-afzelechin (1), the known lignans 7-hydroxynortrachelogenin (2), Epinortrachelogenin (3), nortrachelogenin (4), hydroxymatairesinol (5), allohydroxymatairesinol (6), matairesinol (7), oxomatairesinol (8), and isotaxiresinol (9), and the known taxoids taxinine M (10), taxayuntin (11), and 10-deacetyltaxol (12), and 10-deacetylbaccatin III (13) were isolated from the roots of Taxus cuspidata (Japanese yew, Taxaceae).
CONCLUSIONS:
The propelargonidin was isolated from Taxus spp. for the first time, and was detected in the roots, bark, and twigs. |
|
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