Abstract
Two new isoprenylated chromone derivatives, pestaloficiols Q (1) and R (2), and one new benzofuran derivative, pestaloficiol S (3), along with three known metabolites, anofinic acid (4), siccayne (5), and pyrenophorol (6) were isolated from solid cultures of the plant endophytic fungus Pestalotiopsis fici. Their structures were elucidated primarily by NMR spectroscopy, and the absolute of the C-6 secondary alcohol in 1 was deduced on the basis of circular dichroism (CD) data. Compound 5 showed cytotoxic activity against the human cancer cell lines, HeLa and HT29, with IC50 values of 48.2 and 33.9μM, respectively.
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