New Macrolides and Furan Carboxylic Acid Derivative from the Sponge-Derived Fungus <i>Cladosporium </i><i>h</i><i>erbarum</i>
Raquel C. Jadulco(Universitas Gadjah Mada), Peter Proksch(Universitas Gadjah Mada), Victor Wray(Universitas Gadjah Mada), Sudarsono Sudarsono(Heinrich Heine University Düsseldorf), Albrecht Berg(Heinrich Heine University Düsseldorf), U. Gräfe(Heinrich Heine University Düsseldorf)
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Abstract
Bioassay-guided fractionation of organic extracts of Cladosporium herbarum, isolated from the marine sponge Callyspongia aerizusa, yielded two new macrolide metabolites: pandangolide 3 and 4 (1 and 2) and the known fungal metabolites pandangolide 2 (3), cladospolide B (4), and iso-cladospolide B (5). Also isolated were the antimicrobially active (against Bacillus subtilis and Staphylococcus aureus) furan carboxylic acids: Sumiki's acid (6) and its new derivative, acetyl Sumiki's acid (7). All structures were elucidated by spectroscopic methods.
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