Two new [asperxins A () and B ()] and four known (-) aflatoxins were isolated and identified from the endophytic fungus Y-2, which was derived from the needles of the critically endangered conifer . Their structures were elucidated by extensive spectroscopic methods. Among the isolates, compounds and showed considerable cytotoxicities against the A549 and Hela human cancer cell lines, with IC values in the range of 7.5-16.8 μM.
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