Two New Alkaloidal Taxoids from the Needles of Taxus canadensis
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Two new taxanes with a dimethylamino group on the C-5 side chain were identified for the first time in the needles of the Canadian yew, <I>Taxus canadensis</I>. Their structures were characterized as 7β,10β,13α-triacetoxy-5α-(3′-dimethylamino-3′-phenylpropanoyl)oxy-2α-hydroxy-2(3→20)<I>abeo</I>taxa-4(20),11-dien-9-one (<B>1</B>) and 2α,10β-diacetoxy-9α-hydroxy-5α-(3′-dimethylamino-3′-phenylpropanoyl)oxy-3,11-cyclotax-4(20)-en-13-one (<B>2</B>).
- Agricultural and Biological Chemistry
Agricultural and Biological Chemistry 70(3), 732-736, 2006-03-23
Japan Society for Bioscience, Biotechnology, and Agrochemistry