Coniochaetones E-I, new 4H-chromen-4-one derivatives from the Cordyceps-colonizing fungus Fimetariella sp.

Coniochaetones E-I (1-5), and known metabolites coniochaetones B (6) and A (7) were isolated from the Cordyceps-colonizing fungus Fimetariella sp. 1-7 possess naturally rare structures of cyclopentabenzopyan-9-ones.139