Phomactins K-M, three novel phomactin-type diterpenes from a marine-derived fungus

Three novel diterpenes, phomactins K-M (1-3), were isolated from the cultures of an unidentified marine-derived fungus. The structures of 1-3 were elucidated from spectroscopic data (NMR, MS, IR), and the absolute configurations of 1, 2, and the relative configuration of 3 were determined by X-ray diffraction analysis. (C) 2012 Elsevier Ltd. All rights reserved.