An unusual fatty acid and its glyceride from the marine fungus Microsphaeropis olivacea
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Two new metabolites (1 and 2) were isolated from the marine fungus Microsphaeropsis olivacea. The structures were elucidated, through analysis of the spectroscopic data, as an unusual methyl-branched unsaturated fatty acid, 10-methyl-9Z-octadecenoic acid (1), and the glyceride (2). The locations of the double bond and the methyl branching were determined from the electron impact (EI) mass spectrum of the picolinyl derivative of 1 and from MS/MS data on the hydrogenation products of 1 and 2. Key words: Microsphaeropsis olivacea, marine fungus, methyl-branched unsaturated fatty acid, picolinyl ester.
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2020 ◽
Vol 412
(10)
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pp. 2339-2351
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1992 ◽
Vol 61
(3)
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pp. 283-291
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2013 ◽
Vol 339
◽
pp. 695-699
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