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13-Acetyl-13-decinnamoyltaxchinin B, a taxoid having a rearranged 11(15 → 1)abeo-taxane skeleton, has been isolated from the needles of the Himalayan yew, Taxus baccata. The compound has not previously been encountered in nature. Its structure was established by 1- and 2D NMR techniques including DQF-COSY, HETCOR and HMBC experiments. The conversion of 13-decinnamoyltaxchinin B, a known taxoid,...
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,...
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