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Metabolites from the Marine-Facultative Aspergillus sp. MEXU 27854 and Gymnoascus hyalinosporus MEXU 29901 from Caleta Bay, Mexico.

ABSTRACT: During our ongoing research on fungal strains from unexplored sources, the reinvestigation of the CHCl3-MeOH extract of the marine-facultative Aspergillus sp. MEXU 27854 yielded a new N-methyl cyclic pentapeptide (1) along with known butyrolactone II and PF1233 A. In addition, from the marine-facultative Gymnoascus hyalinosporus MEXU 29901, a new alternariol glucoside, 10-O-[?-D-(4-methoxyl-glucopyranosyl)]-4-O-methylalternariol (2) and known alternariol 4-O-methyl ether, alternariol and beauvericin, were isolated. The structures of 1 and 2 were established by detailed spectroscopic data, and their absolute configuration was ascertained by Marfey's analysis and HRESIMS-MS/MS data for 1, and by chemical degradation and optical rotation analysis for 2.

SUBMITTER: Aparicio-Cuevas MA 

PROVIDER: S-EPMC7207482 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Metabolites from the Marine-Facultative <i>Aspergillus</i> sp. MEXU 27854 and <i>Gymnoascus hyalinosporus</i> MEXU 29901 from Caleta Bay, Mexico.

Aparicio-Cuevas Manuel A MA   González María Del Carmen MDC   Raja Huzefa H   Rivero-Cruz Isabel I   Kurina Steven J SJ   Burdette Joanna E JE   Oberlies Nicholas H NH   Figueroa Mario M  

Tetrahedron letters 20190520 25

During our ongoing research on fungal strains from unexplored sources, the reinvestigation of the CHCl<sub>3</sub>-MeOH extract of the marine-facultative <i>Aspergillus</i> sp. MEXU 27854 yielded a new <i>N</i>-methyl cyclic pentapeptide (<b>1</b>) along with known butyrolactone II and PF1233 A. In addition, from the marine-facultative <i>Gymnoascus hyalinosporus</i> MEXU 29901, a new alternariol glucoside, 10<i>-O</i>-[<i>β</i>-D-(4-methoxyl-glucopyranosyl)]-4-<i>O</i>-methylalternariol (<b>2</  ...[more]

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