(6) Guiyang 550002)Abstract In order to investigate bioactive metabolites from aciduric fungi, Aspergillus sp. OUCMDZ-1914 was isolated from the mangrove soil in Wenchang Hainan, China. The strain was fermented under low pH and the products were extracted and the extract was purified by column chromatography over silica gel, Sephadex LH-20 and semi-preparative HPLC. The structures were identified by means of NMR, MS, UV, IR and X-ray single crystal diffraction. As a results, a new compound, methyl (2Z,3E,5E,7E,9E)-4,10-dimethyl-11-(2,5-dioxopyrrolidin-3-yl)-2-(2-hydroxyethylidene)-11-oxoundeca-3,5,7,9-tetraenoate (1), along with eight known ones, RKB-3384A (2), JBIR-74 (3), JBIR-75 (4), secalonic acid D (5), oxaline (6), meleagrin (7), okaramine H (8) and citreorosein (9)

No abstract