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