The marine-derived fungus Tinctoporellus sp. CBMAI 1061 degrades the dye Remazol Brilliant Blue R producing anthraquinones and unique tremulane sesquiterpenesElectronic supplementary information (ESI) available: 1H, 13C NMR and HRMS spectra for compounds 2-5, and 1H and 13C NMR spectra for compounds 6-8. See DOI: 10.1039/c5ra13580j

Degradation of the dye Remazol Brilliant Blue R (RBBR) by the marine-derived fungus Tinctoporellus sp. CBMAI 1061 led to the formation of four unprecedented anthraquinones, of which two were halogenated. Investigation of the RBBR degradation medium also led to the isolation of three new tremulene terpenes, of which two bear novel 2-hydroxy- or 2-methoxy-3,4-dihydro-2 H -pyrrole N -oxide moieties. The products of RBBR degradation and of the fungus metabolism have been identified by analysis of spectroscopic data. Conversion of RBBR dye to anthraquinones by the fungus Tinctoporellus sp., also producing novel tremulene terpenes.