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. 1991 Jan-Feb;54(1):305-9.
doi: 10.1021/np50073a041.

Identification and characterization of two new methylicosadienoic acids from Erylus formosus

N M Carballeira  1 , V Negrón
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Identification and characterization of two new methylicosadienoic acids from Erylus formosus

N M Carballeira et al. J Nat Prod. 1991 Jan-Feb.

Abstract

The novel fatty acids 18-methyl-5,9-icosadienoic acid [1] and 19-methyl-5,9-icosadienoic acid [2] were identified in the Caribbean sponge Erylus formosus. Other interesting fatty acids identified were the branched acids 3-methylpentadecanoic acid and 3-methylhexadecanoic acid, which are known to possess larvicidal activity. The most stable conformation of the new acid 19-methyl-5,9-icosadienoic acid is also presented as predicted by Molecular Mechanics (MM2) calculations. The sterol composition of E. formosus is also reported.

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