**2. Results and Discussion**

The dry roots of *E. fischeriana* were repeatedly extracted with 95% EtOH at room temperature and the extract was successively partitioned with petroleum ether, ethyl acetate (EtOAc) and *n*-butanol. The EtOAc fraction was subjected repeatedly to column chromatography over silica gel, ODS gel, Sephadex LH-20 and semipreparative HPLC to yield two previously undescribed *ent*-abietane diterpenoids (**1**–**2**). In addition to the above new compounds, two known diterpenoids (Figure 1) were also obtained: raserranes A (**3**) and B (**4**). The structures of all compounds were well-characterized by NMR analysis and quantum chemical calculation.

**Figure 1.** The structures of compounds **1**–**4**.
