Chaetolactam A, an Azaphilone Derivative from the Endophytic Fungus sp. g1.

Chaetolactam A (), an unprecedented azaphilone derivative bearing a unique 9-oxa-7-azabicyclo[4.2.1]octan-8-onering system, together with two new compounds, 11--chaetomugilide B () and chaetomugilide D () was isolated from an endophytic fungus, sp.