Chemical Constituents of the Endophytic Fungus Ophiocordyceps sobolifera

Fractionation of the BuOH-soluble fraction of the liquid fermentation of an endophytic fungus Ophiocordyceps sobolifer BCRC 38180 associated with the root of Taiwanese Ilex formosana (Aquifoliaceae) resulted in the isolation of one new diketopiperazine, soboliferamide (1), and one metabolite isolated for the first time from a natural source, cyclo-(Ile-Ser) (2), along with 18 previously identified compounds, 3–20. Their structures were...