A new pair of cytotoxic enantiomeric isoprenylated chromone derivatives from sp.

A new pair of enantiomeric isoprenylated chromone derivatives, (±)-pestaloficiol X [(±)-], along with a known compound pestaloficiol J (), were isolated from the plant endophytic fungus sp. The racemic mixture was separated through chiral HPLC. The structures of new compounds (±)- were elucidated on the basis of extensive spectroscopic data and their absolute configurations were further configured through computational analysis of their electronic circular dichroism (ECD) spectra.