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. 2002 Mar;65(3):382-5.
doi: 10.1021/np010262u.

ent-Kaurane and beyerane diterpenoids from Excoecaria agallocha

Ammanamanchi S R Anjaneyulu  1 , Vadali Lakshmana Rao, Karanam Sreedhar
Affiliations

ent-Kaurane and beyerane diterpenoids from Excoecaria agallocha

Ammanamanchi S R Anjaneyulu et al. J Nat Prod. 2002 Mar.

Abstract

The roots of Excoecaria agallocha yielded four new diterpenoids, ent-3 beta,20-epoxy-3 alpha,6 alpha-dihydroxykaur-16-ene (agallochin F) (1), 3beta,20-epoxy-3 alpha-hydroxybeyer-15-ene (agallochin G) (2), 3 beta,20:15R,16S-diepoxy-3 alpha-beyeranol (agallochin H) (3), and 3 beta,20-epoxy-3 alpha,6 alpha-dihydroxy-18-nor-beyer-15-ene (agallochin I) (4), along with three known derivatives, 2-acetoxy-1,15-beyeradiene-3,12-dione (5), 2-hydroxy-1,15-beyeradiene-3,12-dione (6), and ent-kauran-16 beta-ol-3-one. The structures of 1-4 were determined by spectroscopic (NMR and MS) data interpretation.

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