Roquefortine E, a diketopiperazine from an Australian isolate of Gymnoascus reessii.

@article{Clark2005RoquefortineEA,
  title={Roquefortine E, a diketopiperazine from an Australian isolate of Gymnoascus reessii.},
  author={Ben Clark and Robert J. Capon and Ernest Lacey and Shaun Tennant and Jennifer H. Gill},
  journal={Journal of natural products},
  year={2005},
  volume={68 11},
  pages={
          1661-4
        }
}
The new isoprenylated diketopiperazine roquefortine E (6) has been isolated from an Australian soil isolate of the ascomycete Gymnoascus reessii. The known fungal metabolite roquefortine C (1) was also recovered as the major antibacterial principle, and all structures were assigned by detailed spectroscopic analysis. 
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