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
- 1 December 1983
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 56 (12) , 3683-3693
- https://doi.org/10.1246/bcsj.56.3683
Abstract
Two new quassinoids, shinjudilactone and shinjulactone C were isolated from the root bark of Ailanthus altissima SWINGLE and their structures were established to be 1β,11α-dihydroxy-2,16-dioxo-13(12→11α)abeo-picras-3-en-12,20-olide and 1α,12α : 5α,13α-dicyclo-1β,12β,20-trihydroxy-9βH-picras-3-ene-2,11,16-trione, respectively, by X-ray diffraction analysis. Shinjudilactone was prepared from ailanthone by benzilic acid rearrangement.Keywords
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