New chlorinated diphenyl ethers from an Aspergillus species

Two new chlorinated diphenyl ethers (5, 6) have been isolated from the culture broth of an Aspergillus species obtained from leaf litter, together with the known benzophenone sulochrin (1), the grisandiene geodin (2), and the diphenyl ether asterric acid (3). The structure of another metabolite, methyl asterrate (4), was confirmed by single-crystal X-ray structure analysis.