Constituents of the root bark of Ailanthus altissima Swingle. Isolation and X-ray crystal structures of shinjudilactone and shinjulactone C and conversion of ailanthone into shinjudilactone.

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概要

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• Two new quassinoids, shinjudilactone and shinjulactone C were isolated from the root bark of <I>Ailanthus altissima</I> SWINGLE and their structures were established to be 1β,11α-dihydroxy-2,16-dioxo-13(12→11α)<I>abeo</I>-picras-3-en-12,20-olide and 1α,12α : 5α,13α-dicyclo-1β,12β,20-trihydroxy-9β<I>H</I>-picras-3-ene-2,11,16-trione, respectively, by X-ray diffraction analysis. Shinjudilactone was prepared from ailanthone by benzilic acid rearrangement.

• 公益社団法人 日本化学会の論文

著者

• Iitaka Yoichi

  Department of Pharmaceutical Sciences, The University of Tokyo

• Itai Akiko

  Department of Pharmaceutical Sciences, The University of Tokyo

関連論文

• Constituents of the root bark of Ailanthus altissima Swingle. Isolation and X-ray crystal structures of shinjudilactone and shinjulactone C and conversion of ailanthone into shinjudilactone.

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