• 作者： Ya-Ching Shen, Chaturvedula V. S. Prakash and Meng-Chieh Hung
• 中文摘要： Nineteen compounds including taxumairol R (1), taxinine M (2), taxacin (3), paclitaxel (4), 10-deacetyltaxol A (5), 10-deacetyl-7-epi-taxol (6), 7-epi-taxol (7), taxol C, 10-deacetyltaxol C, 7b-xylosyl-10-deacetyltaxol (8), taxamairin A (9), taxinine A, 14b-hydroxytaxusin (10), 5a-hydroxy-7b,9a,10b,13a-tetraacetoxy-4(20),11-taxadiene, 1-dehydroxybaccatin- VI, 1b-dehydroxybaccatin-IV, baccatin IV, baccatin VI and ponasterone A have been isolated and identified from the root bark of Taxus mairei. Among them, compound 1 was a new taxoid and compounds 11 and 7b-xylosyl-10-deacetyltaxol pentaacetate were new derivatives prepared from 14b-hydroxytaxusin (10) and 8, respectively. Their structures and assignment were established on the basis of 2D-NMR analysis and chemical methods.
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