Eight New Diterpenoids from Euphorbia decipiens.

A reinvestigation of Euphorbia decipiens with a modified extraction procedure resulted in the isolation and structure elucidation of eight new myrsinane-type diterpene esters (see 3 – 10). Moreover, revised structures are proposed for decipinone B (1) and C (2) on the basis of X-ray-diffraction analyses. The structures of the compounds were elucidated by means of different spectroscopic methods, including 1D- and 2D-NMR studies.