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Note | Regular issue | Vol 75, No. 4, 2008, pp.911-917
Published online, 28th December, 2007
DOI: 10.3987/COM-07-11256
Two New Taxoids from the Needles and Young Stems of Taxus cuspidata

Liyan Wang,* Liming Bai, Daisuke Tokunaga, Yuusuke Watanabe, Jun-ichi Sakai, Wanxia Tang, Yuhua Bai, Katsutoshi Hirose, and Masayoshi Ando*

*Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Nishi-ku, Niigata, 950-2181, Japan

Abstract

A new basic taxoid, taxine NA-13 (1) and a new neutral taxoid, 3α,11α-cyclotaxinine NN-2 (2) were isolated from Japanese yew tree, Taxus cuspidata. The structures of two new taxoids 1 and 2 were established as shown in structure 1 and structure 2 by spectroscopic analysis.