Two novel iso-branched octadecenoic acids from a Micrococcus species.
The novel fatty acids 16-methyl-6(Z)-heptadecenoic acid and 16-methyl-8(Z)-heptadecenoic acid were identified for the first time in nature in a species of the bacterium Micrococcus isolated from Lake Pomorie in Bulgaria. The principal fatty acids in this bacterium were a series of iso-anteiso fatty acids with chain lengths between C(14) and C(24), while the most interesting series of monounsaturated fatty acids was a family of Delta(6) fatty acids with chain lengths between C(14) and C(17). The novel compounds were characterized using a combination of GC-MS and chemical transformations, such as dimethyl disulfide derivatization and catalytic hydrogenation. The results established for the first time a bacterial origin for some of these Delta(6) fatty acids.
Carballeira
N M
NM
Department of Chemistry, University of Puerto Rico, P.O. Box 23346, San Juan, Puerto Rico 00931, USA. ncarball@upracd.upr.clu.edu
Pagán
M
M
Shalabi
F
F
Nechev
J T
JT
Lahtchev
K
K
Ivanova
A
A
Stefanov
K
K
D005229:Fatty Acids, Monounsaturated / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D008837:Micrococcus / Q000737:chemistry* / Q000378:metabolism; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared; D014871:Water Microbiology
C420902:16-methyl-6-heptadecenoic acid; C420903:16-methyl-8-heptadecenoic acid; D005229:Fatty Acids, Monounsaturated