A pair of taxoids from the needles of Taxus canadensis

Abstract

A pair of taxoids were isolated from the needles of Taxus canadensis, which were identified as 2,10-diacetyl-5(Z)-cinnamoylphototaxicin II (1), a new taxoid, and 2,10-diacetyl-5(E)-cinnamoylphototaxicin II (2), a known one, by spectroscopic methods including ¹H, ¹³C NMR, HSQC, HMBC, NOESY, and mass spectra.

Keywords:

• Taxus
• Taxaceae
• Taxus canadensis
• taxane
• 2,10-diacetyl-5(Z)-cinnamoylphototaxicin II

Acknowledgements

This work was supported by the Scaling Project for Innovation Scholars, Natural Science Foundation of Jiangsu Province (BK2008039).