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J Antibiot (Tokyo). 2005 May;58(5):338-45.

Spylidone, a novel inhibitor of lipid droplet accumulation in mouse macrophages produced by Phoma sp. FKI-1840.

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School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.


During our screening for microbial inhibitors of lipid droplet accumulation in macrophages, a new compound designated spylidone was isolated along with two structurally related known compounds, PF1052 and vermisporin, from the fermentation broth of Phoma sp. FKI-1840 by solvent extraction, silica gel column chromatography, ODS column chromatography and preparative HPLC. From the structure elucidation, spylidone has a spiro ring containing 2,4-pyrrolidinedione. Among the three compounds, only spylidone was found to inhibit lipid droplet accumulation in macrophages at 10 to approximately 50 microM without any cytotoxic effect.

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