Quassinoids from Ailanthus vilmoriniana

Itokawa H, Takeya K, Kobata H, Ozeki A, Morita H (1997) A new quassinoid from Ailanthus vilmoriniana J Nat Prod 60 642-644... 

The second group of C20 quassinoids with a contracted C ring is represented by shinjudUactone and ailantinol D, and the third group with a cleaved C ring is composed of vilmorinines A-F isolated from Ailanthus vilmoriniana (Dode) [6]. 

Six quassinoids, named vilmorinine A-F (57-62) were isolated from the cortex of Ailanthus vilmoriniana. The structures were elucidated by various spectroscopic methods, X-ray analysis, and computational chemical methods. Vilmorinines did not show cytotoxic activity (IC50 > 100 (ig/mL) [33-34]. 

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