Epicoccins A–D, Epipolythiodioxopiperazines from a Cordyceps-Colonizing Isolate of Epicoccum nigrum
2007-09-28T00:00:00Z (GMT) by
Epicoccins A–D (<b>1</b>–<b>4</b>), four unique epipolythiodioxopiperazines possessing unusual sulfur bridges, have been isolated from cultures of a Cordyceps-colonizing isolate of Epicoccum nigrum. The structures of these compounds were determined mainly by analysis of their NMR spectroscopic data. The relative and absolute configuration of epicoccin A (<b>1</b>) was established by single-crystal X-ray diffraction analysis. Epicoccin A (<b>1</b>) showed modest antimicrobial activity.
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