- LIGNANS, BIFLAVONES AND TAXOIDS FROM HIMALAYAN TAXUS BACCATA
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Chemical investigation of the twigs (separated from the needles) of the Himalayan yew, Taxus baccata, has culminated in the isolation of a new lignan, 4'-O-demethylsuchilactone, along with eight phenolic compounds, (-)-rhododendrol, (-)-rhododendrin, sciadopytisin, ginkgetin, kayaflavone, (-)-secoisolariciresinol, suchilactone and a lignan diol, not previously encountered in nature.Three taxoids, brevifoliol, 13-decinnamoyltaxchinin B and 10-deacetylbaccatin III were also isolated.This is the first report on the phytoconstituents isolated only fom the twigs of the Himalayan yew. - Key words: Taxus baccata; Taxaceae; twigs; phenolics; biflavones; lignans; taxoids; 4'-O-demethylsuchilactone.
- Das, B.,Rao, S. Padma,Srinivas, K. V. N. S.,Yadav, J. S.
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p. 715 - 718
(2007/10/02)
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- Studies on the constituents of Jatropha gossypifolia Linn: Synthesis of prasanthaline, a new lignan, and isolation of dihydroprasanthaline
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Prasanthaline (1), a new lignan isolated by Chatterjee et al. , has been synthesised by two routes.In the first appraoch naturally occurring suchilactone (2) on LAH reduction followed by acetylation affords 1, identical wit
- Banerji, J.,Bose, P.,Das, B.
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p. 711 - 713
(2007/10/02)
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