Condensation Of Macrocyclic Polyketides Produced By Penicillium Sp. Drf2 With Mercaptopyruvate Represents A New Fungal Detoxification Pathway

dc.creatorDe Castro M.V.
dc.creatorIóca L.P.
dc.creatorWilliams D.E.
dc.creatorCosta B.Z.
dc.creatorMizuno C.M.
dc.creatorSantos M.F.C.
dc.creatorDe Jesus K.
dc.creatorFerreira E.L.F.
dc.creatorSeleghim M.H.R.
dc.creatorSette L.D.
dc.creatorPereira Filho E.R.
dc.creatorFerreira A.G.
dc.creatorGonçalves N.S.
dc.creatorSantos R.A.
dc.creatorAndersen R.J.
dc.creatorBerlinck R.G.S.
dc.date2016
dc.date2017-08-17T19:15:02Z
dc.date2017-08-17T19:15:02Z
dc.date.accessioned2018-03-29T05:21:27Z
dc.date.available2018-03-29T05:21:27Z
dc.identifierJournal Of Natural Products. American Chemical Society, v. 79, n. 6, p. 1668 - 1678, 2016.
dc.identifier0163-3864
dc.identifier10.1021/acs.jnatprod.6b00295
dc.identifierhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84976416033&doi=10.1021%2facs.jnatprod.6b00295&partnerID=40&md5=a87136f244717df4229ca451898d0071
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/323627
dc.identifier2-s2.0-84976416033
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1357790
dc.descriptionApplication of a refined procedure of experimental design and chemometric analysis to improve the production of curvularin-related polyketides by a marine-derived Penicillium sp. DRF2 resulted in the isolation and identification of cyclothiocurvularins 6-8 and cyclosulfoxicurvularins 10 and 11, novel curvularins condensed with a mercaptolactate residue. Two additional new curvularins, 3 and 4, are also reported. The structures of the sulfur-bearing curvularins were unambiguously established by analysis of spectroscopic data and by X-ray diffraction analysis. Analysis of stable isotope feeding experiments with [U-13C3 15N]-l-cysteine confirmed the presence of the 2-hydroxy-3-mercaptopropanoic acid residue in 6-8 and the oxidized sulfoxide in 10 and 11. Cyclothiocurvularins A (6) and B (7) are formed by spontaneous reaction between 10,11-dehydrocurvularin (2) and mercaptopyruvate (12) obtained by transamination of cysteine. High ratios of [U-13C3 15N]-l-cysteine incorporation into cyclothiocurvularin B (7), the isolation of two diastereomers of cyclothiocurvularins, the lack of cytotoxicity of cyclothiocurvularin B (7) and its methyl ester (8), and the spontaneous formation of cyclothiocurvularins from 10,11-dehydrocurvularin and mercaptopyruvate provide evidence that the formation of cyclothiocurvularins may well correspond to a 10,11-dehydrocurvularin detoxification process by Penicillium sp. DRF2. © 2016 The American Chemical Society and American Society of Pharmacognosy.
dc.description79
dc.description6
dc.description1668
dc.description1678
dc.languageEnglish
dc.publisherAmerican Chemical Society
dc.relationJournal of Natural Products
dc.rightsfechado
dc.sourceScopus
dc.titleCondensation Of Macrocyclic Polyketides Produced By Penicillium Sp. Drf2 With Mercaptopyruvate Represents A New Fungal Detoxification Pathway
dc.typeArtículos de revistas


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