Phomactin H, a novel diterpene from an unidentified marine-derived fungus

Phomactin H (1), a diterpene has been isolated from cultures of an unidentified marine-derived fungus. The structure and relative stereochemistry of phomactin H (1) was determined by X-ray diffraction analysis. Phomactin H (1), having an oxepane moiety, is a new phomactin with a novel skeleton. (C) 2004 Elsevier Ltd. All rights reserved.