Four new decarestrictine analogues (botryolides A-D; 1- 4), a biosynthetically related gamma-lactone (botryolide E; 5), and the known compounds decarestrictine D ( 6) and sterigmatocystin have been isolated from cultures of a fungicolous isolate of Botryotrichum sp. (NRRL 38180). The structures of these compounds were determined by analysis of 2D NMR and ESIMS data. The relative configurations of 1- 5 were established on the basis of NMR data and/or X-ray diffraction analysis, while the absolute configuration of 1 was assigned using the modified Mosher method.
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