Abstract
Two new phytoecdysteroids with a 20,22-acetal group were identified for the first time from the needles of the Canadian yew, Taxus canadensis. Their structures were characterized as ponasterone A 20,22-p-hydroxybenzylidene acetal (1) and ponasterone A 20,22-acetonide (2) on the basis of 1D, 2D NMR evidence and high-resolution FABMS analysis. © 2010 Verlag der Zeitschrift für Naturforschung, Tübingen.
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Fang, Y., Ni, Z. Y., Yamada, T., Wang, Y. F., Zhang, M. L., Dong, M., … Kiyota, H. (2010). Two new phytoecdysteroids from the needles of Taxus canadensis. Zeitschrift Fur Naturforschung - Section B Journal of Chemical Sciences, 65(11), 1401–1405. https://doi.org/10.1515/znb-2010-1118
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