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[Secondary metabolites of endophyte Hypoxylon sp. HD-2014 from Uncaria rhynchophylla]. | LitMetric

AI Article Synopsis

Article Abstract

This study aims to investigate the compounds in the product of rice fermented with endophyte Hypoxylon sp.HD-2014 from Uncaria rhynchophylla.To be specific, normal-phase, MCI, Sephadex LH-20, and semi-preparative high performance liquid chromatography(HPLC) was used to yield 12 compounds.Through spectral data analysis and comparison with previous reports, they were identified as methyl(E)-5-hydroxymethyl-6,7-dihydroxy-4,5-epoxy-octanoate-2-ene(1),(2E,6E)-nona-2,6,8-triene-4,5-diol(2), 8-O-(R)-methoxynodulisporin A(3), 3-nitropropionic acid(4), 3-nitropropionic acid methyl ester(5), 3,4-dihydroxy-phenylethanol(6), 2,4-dichlorobenzoic acid(7), cis-4-hydroxyscytalone(8), 4,6,8-trihydroxy-3,4-dihydronaphthalen-1(2H)-one(9), isosclerone(10), 4H-1-benzopyran-4-one-2,3-dihydro-5-hydroxy-8-(hydroxyl-methyl)-2-methy(11), and 5-methylmellein(12), respectively.Compounds 1 and 2 were identified for the first time.In vitro cytotoxicity test indicated that compounds 1-12 had no significant inhibitory effect on A549 and HepG2 cells.Antimicrobial susceptibility testing revealed that compound 3 showed synergistic effect with the positive control chloramphenicol.

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http://dx.doi.org/10.19540/j.cnki.cjcmm.20220225.201DOI Listing

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