Phomactin I, 13-epi-Phomactin I, and Phomactin J, three novel diterpenes from a marine-derived fungus

Three novel diterpenes were isolated from cultures of an unidentified marine-derived fungus. The structures of the compounds, phomactin I (1), 13-epi-phomactin I (2), and phomactin J (3) were determined by spectroscopic and X-ray crystallographic methods.

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