From a pro-inflammatory active extract of Euphorbia peplus, two new diterpe
ne polyesters based on the pepluane and jatrophane skeletons were isolated,
together with four known ingenane and jatrophane diterpenes. The structure
s were determined on the basis of extensive NMR studies. Ingenol 3-angelate
, which was obtained for the first time from this plant, is an irritant tox
in with high activity.