A taxoid from needles of Himalayan Taxus baccata

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, to 13-acetyl 13-decinnamoyltaxchinin B confirmed the structure of the latter