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Marilones A-C, phthalides from the sponge-derived fungus Stachylidium sp.

ABSTRACT: The marine-derived fungus Stachylidium sp. was isolated from the sponge Callyspongia sp. cf. C. flammea. Culture on a biomalt medium supplemented with sea salt led to the isolation of three new phthalide derivatives, i.e., marilones A-C (1-3), and the known compound silvaticol (4). The skeleton of marilones A and B is most unusual, and its biosynthesis is suggested to require unique biochemical reactions considering fungal secondary metabolism. Marilone A (1) was found to have antiplasmodial activity against Plasmodium berghei liver stages with an IC(50) of 12.1 µM. Marilone B (2) showed selective antagonistic activity towards the serotonin receptor 5-HT(2B) with a K(i) value of 7.7 µM.

SUBMITTER: Almeida C

PROVIDER: S-EPMC3252867 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature

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Marilones A-C, phthalides from the sponge-derived fungus Stachylidium sp.

Almeida Celso C Kehraus Stefan S Prudêncio Miguel M König Gabriele M GM

Beilstein journal of organic chemistry 20111205

The marine-derived fungus Stachylidium sp. was isolated from the sponge Callyspongia sp. cf. C. flammea. Culture on a biomalt medium supplemented with sea salt led to the isolation of three new phthalide derivatives, i.e., marilones A-C (1-3), and the known compound silvaticol (4). The skeleton of marilones A and B is most unusual, and its biosynthesis is suggested to require unique biochemical reactions considering fungal secondary metabolism. Marilone A (1) was found to have antiplasmodial act ...[more]

PMID: 22238541

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