Chemical structures of excoecarins A, B and C: Three new labdane-type diterpenes from wood, Excoecaria agallocha

Article abstract of DOI:10.1248/cpb.44.2100

Three new diterpenes, excoecarins A (2), B (3) and C (4) have been isolated from the wood of Excoecaria agallocha LINN. The structures of excoecarins A, B and C were established as (13R,14R)-ent-8α, 13;14,15- diepoxy-13-epi-labda-3-one (2), (13R,14S)-ent-8α, 13;14, 15-diepoxy-13-epi- labda-3-one (3), (13R,14R)-ent-8α, 13;14,15-diepoxy- 13-epi-labda-3β-ol (4), respectively, on the basis of spectroscopic data and chemical evidence.

Full text of DOI:10.1248/cpb.44.2100

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