alexa Excoecarins D, E, and K, from excoecaria agallocha.
Chemistry

Chemistry

Natural Products Chemistry & Research

Author(s): Konishi T, Konoshima T, Fujiwara Y, Kiyosawa S

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Abstract Three novel diterpenoids, excoecarins D, E, and K (1-3), were isolated from Excoecaria agallocha. The structures of 1-3 were established as 3alpha,18-dihydroxy-3beta,20-epoxybeyer-15-ene, (15R, 16S)-ent-15,16-epoxybeyeran-3-one, and ent-3beta-hydroxykaur-16-en-2-one, respectively, on the basis of extensive NMR experiments and, in the case of 1, by X-ray analysis.
This article was published in J Nat Prod and referenced in Natural Products Chemistry & Research

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