Six bioactive naphthoquinone derivatives, erythrostominone, deoxyerythrosto
minone, 4-O-methyl erythrostominane, epierythrostominol, deoxyerythrostomin
ol and 3,5,8-trihydroxy-6-methoxy-2-(5-oxohexa-1,3-dienyl)-1,4-naphthoquino
ne, were isolated from the insect pathogenic fungus Cordyceps unilateralis
BCC1869. While the latter is synthetically known, both it and GO-methyl ery
throstominone are products of fungus strain C, unilateralis BCC1869, (C) 19
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