7,8beta-dihydroponasterone A, a new phytoecdysteroid from the needles of the Japanese Yew, Taxus cuspidata

Journal of the Brazilian Chemical Society

Qing-wen Shi²  Mei Dong²  Chang-hong Huo²  Xiao-hui Su²  Xing Li²  Teiko Yamada¹  Hiromasa Kiyota¹ 

[1] ,Hebei Medical University School of Pharmaceutical Sciences Department of Natural Product ChemistryShijiazhuang Hebei Province ,P. R. China

关键词: Taxus cuspidata;    yew;    phytoecdysteroid;    ponasterone A;    7;    8b-dihydroponasterone A;   

DOI  :  10.1590/S0103-50532007000500032

来源: SciELO

【 摘 要 】

A new plant ecdysteroid 7,8beta-dihydroponasterone A, together with ponasterone A, were isolated from the methanol extract of the needles of the Japanese yew, Taxus cuspidata. Their structures were elucidated on the basis of spectroscopic analysis including ¹H NMR, 13C NMR, ¹H-¹H COSY, NOESY, HMQC and HMBC and confirmed by high-resolution FABMS data.

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