Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
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Taxumairols X—Z, New Taxoids from Taiwanese Taxus mairei
Ya-Ching ShenYao-To ChangShih-Sheng WangYu-Chi LinChing-Yeu Chen
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2002 Volume 50 Issue 12 Pages 1561-1565

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Abstract

In addition to 19-dydroxybaccatin III, 1β-hydroxy-5α-deacetylbaccatin I, taxayuntin G and 13-O-deacetyltaxumairol Z (4), three new taxane diterpenoids, taxumairols X (1), Y (2), Z (3) have been isolated from extracts of the Formosan Taxus mairei (LEMEE & LEVL.) S. Y. HU. Compounds 1—2 belong to the 11(15→1)-abeo-taxane system, having a tetrahydrofuran ring at C-2, C-3, C-4 and C-20. The new compound 3 and 4, which was misidentified previously are derivatives of 11(15→1)-abeo-taxane with an intact oxirane system. The structures of compounds 1—4 were elucidated on the basis of extensive two dimensional (2D)-NMR analysis.

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© 2002 The Pharmaceutical Society of Japan
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