Nm. Carballeira et al., IDENTIFICATION OF THE NOVEL ANTIMICROBIAL FATTY-ACID (5Z,9Z)-14-METHYL-5,9-PENTADECADIENOIC ACID IN EUNICEA-SUCCINEA, Journal of natural products, 60(5), 1997, pp. 502-504
The phospholipid fatty acid composition of Eunicea succinea was invest
igated, and the novel (5Z,9Z)-14-methyl-5,9-pentadecadienoic acid was
identified. Structural characterization was accomplished by means of m
ass spectrometry of its pyrrolidide derivative, NMR, FTIR, and total s
ynthesis. Other interesting phospholipid fatty acids in E. succinea we
re the tetracosapolyenoic acids 6,9,12,15,18,21-tetracosahexaenoic aci
d (24:6) and 6,9,12,15,18-tetracosapentaenoic acid (24:5). The title c
ompound was particularly active against Gram-positive bacteria such as
Staphylococcus aureus (MIC 0.24 mu mol/mL) and Streptococcus faecalis
(MIC 016 mu mol/mL).