New ent-Isopimarane Diterpene from Mangrove Excoecaria agallocha L.

摘要

A new ent-isopimarane diterpenoid, Agallochaone A(1) , together with the known 8,13-epoxy-14-labden-3-one (2) and Excoecarin B(3) were isolated from the whole plant of mangrove Excoecaria agallocha L. and identified on the basis of a detailed spectral analysis, including 2D NMR spectrometry and HRESI-MS.