The biological transformation of the bioactive dihydroisocoumarin, (-)-mellein, isolated from the marine-derived fungus Cladosporium sp., was studied. The preparative-scale culture of (-)-mellein with a marine isolate of a bacterium Stappia sp. resulted in the isolation of its oxidized metabolite, (3R,4S)-4-hydroxymellein. The stereostructure of the metabolite obtained was assigned on the basis of detailed physicochemical data analyses.
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http://dx.doi.org/10.4014/jmb.1002.02012 | DOI Listing |
ACS Omega
August 2020
Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
Five new polyketides, asperochrapyran () and asperochralactones A-D (-), along with 12 known polyketides (-), were obtained from the fungal strain . Structures of all isolates were elucidated by their spectroscopic parameters. The relative configurations of the new compounds were deduced by the data of coupling constants and NOESY spectra.
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August 2020
Department of Chemical Sciences, University of Naples 'Federico II', 80126 Naples, Italy.
Wei Sheng Wu Xue Bao
August 2010
School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
Objective: To explore the secondary metabolites of fungus Aspergillus ochraceus LCJ11-102 associated with the coral Dichotella gemmacea under environmental stress and to obtain characteristic compounds with biological activities.
Methods: A nutrient-deprived culture medium (biomimetic culture) and a high salt culture medium were used for fermentation. Fingerprints of HPLC of the fermentation broth were used to investigate the diversity of secondary metabolites.
J Microbiol Biotechnol
June 2010
Department of Chemistry, Pukyong National University, Busan 608-737, Korea.
Chem Pharm Bull (Tokyo)
December 2009
Department of Chemistry and Center for Innovation in Chemistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand.
A new [11]cytochalasin derivative, xylarisin (1), was isolated from the marine-derived fungus Xylaria sp. PSU-F100 along with six known metabolites: three mellein derivatives (2-4), one pyrone derivative (5) and two carboxylic acids (6,7). The structure and stereochemistry of 1 were determined by NMR and X-ray diffraction analyses.
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