New taxanes from the seeds of Taxus mairei

Q.-W. Shi School of Pharmaceutical Sciences, Hebei Medicinal University, Department of Natural Product Chemistry, 336 Zhongshan East Road, 050017, Shijiazhuang, ChinaCorrespondence[email protected]

Z.-P. Li School of Pharmaceutical Sciences, Hebei Medicinal University, Department of Natural Product Chemistry, 336 Zhongshan East Road, 050017, Shijiazhuang, China

C.-L. Wang School of Pharmaceutical Sciences, Hebei Medicinal University, Department of Natural Product Chemistry, 336 Zhongshan East Road, 050017, Shijiazhuang, China

M.-L. Zhang School of Pharmaceutical Sciences, Hebei Medicinal University, Department of Natural Product Chemistry, 336 Zhongshan East Road, 050017, Shijiazhuang, China

N. Choony Mount Marty College, Department of Chemistry, 1105W, 8th Street, Yankton, SD, SD 57078, USA

H. Kiyota Graduate School of Agricultural Sciences, Tohoku University, Laboratory of Applied Bioorganic Chemistry, Division of Life Science, 1-1 Tsutsumidori-Amamiya, Aoba-ku, Sendai, 981-8555, Japan

Abstract

Two new taxoid metabolites were isolated from the methanol extract of the Taxus mairei seeds. Their structures were established as 2α-hydroxy-9α,10β,13α-triacetoxy-5α-cinnamoyloxytaxa-11-en-4β,20-epoxide (1) and 2′-acetyl taxol (2) on the basis of spectral analysis.

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Acknowledgements

The work described in this paper was co-supported by the Foundation for Researching New Drugs of China (no. 2003AA2Z3527) and Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry of People's Republic of China.

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