Two New Taxoids from the Leaves and Stems of Taxus chinensis

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Two new taxoids called 7,13-dideacetyl-9,10-debenzoyl-7β,9α-p-hydroxylbenzylidenedioxy-taxchinin C (1) and 7,13-dideacetyl-2,9,10-debenzoyl-2-tigloyl-7β,9α-p-hydroxylbenzylidenedioxy-taxchinin C (2) were isolated from the leaves and stems of Taxus chinensis. They represent the first examples of taxoids containing the 5/7/6-membered ring system with 7β,9α-p-hydroxylbenzylidenedioxy groups, the structures of which were elucidated based on spectroscopic analyses, especially 1D and 2D NMR spectra.
公益社団法人　日本薬学会の論文