Eight new diterpenoids from Euphorbia decipiens

A reinvestigation of Euphorbia decipiens with a modified extraction procedu re resulted in the isolation and structure elucidation of eight new myrsina ne-type diterpene esters (see 3-10). Moreover. revised structures are propo sed for decipinone B (1) and C (2) on the basis of X-ray-diffraction analys es. The structures of the compounds were elucidated by means of different s pectroscopic methods, including 1D- and 2D-NMR studies.