Two new taxoids from the needles and young stems of Taxus cuspidata.

[摘要]：A new basic taxoid, taxine NA-13 (I) and a new neutral taxoid, 3a,11a-cyclotaxinine NN-2 (II) were isolated from Japanese yew tree, Taxus cuspidata. The structures of two new taxoids I and II were established as shown in structure I and structure II by spectroscopic anal.

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