geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Lack of regioselectivity in formation of oxohydroxy octa decenoic acids from the 9 hydro per oxide or 13 hydro per oxide of linoleic acid


, : Lack of regioselectivity in formation of oxohydroxy octa decenoic acids from the 9 hydro per oxide or 13 hydro per oxide of linoleic acid. Lipids 14(10): 848-851

Either 9-hydroperoxy-trans-10,cis-12-octadecadienoic acid or 13-hydroperoxy-cis-9,trans-11-octadecadienoic acid was treated with the catalyst, cysteine-FeCl3, in the presence of O2. Oxohydroxyoctadecenoic acids were among the many products formed as a result of hydroperoxide decomposition. A mixture of 9(13)-oxo-13(9)-hydroxy-trans-11(10)-octadecenoic acids (.delta.-ketols) was produced from either isomeric hydroperoxide. The formation of isomeric .delta.-ketols from 9-hydroxy-trans-12,13-epoxy-trans-10-octadecenoic acid (epoxyol), a known product of 13-hydroperoxy-cis-9,trans-11-octadecadienoic acid decomposition, implies that the epoxyol is an intermediate. The mechanism was elucidated by the facile conversion of the epoxyol (methyl ester) to methyl-9(13)-oxo-13(9)-hydroxy-trans-11(10)-octadecenoates with a Lewis acid, BF3-etherate.

US$29.90


Other references

Quero, J-C., 1984: Gnathostomata. Scyliorhinidae. Unknown

Kramer H.J., 1988: Treatment of the hepatorenal syndrome. DMW (Deutsche Medizinische Wochenschrift) 113(14): 561-564

Baba, Keiji., 1998: Obituary. Sadayoshi Miyake (1908-1998). Crustacean Research. December; 27: 150-159

Hay William W.; Wold Christopher N.; Soeding Emanuel; Floegel Sascha, 2001: Evolution of sediment fluxes and ocean salinity. Pages 153-167 2001

Pike, M.; Hill, A.P.; Smith, P.G., 1981: Relative efficiencies of matched and unmatched designs. International Journal of Epidemiology 10(4): 393-394

Wolfe, A.F., 1992: Intergenerational laboratory experience in biology. American Zoologist 32(5): 107A

Adebayo, D.; Bjarnason, I., 2006: Is non-steroidal anti-inflammaory drug (NSAID) enteropathy clinically more important than NSAID gastropathy?. The side effects of conventional non-steroidal anti-inflammatory drugs (NSAIDs) on the stomach is undoubtedly a serious public health problem contributing significantly to the morbidity and mortality of patients receiving these drugs. However, the...

Stern, B.; Molven, A.; Kamp, D., 1995: Conserved sequence patterns in phages Mu and lambda DNA. The genetic maps of bacteriophages Mu and lambda can be aligned with respect to the functions of their genes. We were interested to ascertain whether the congruence of gene order is reflected at the nucleotide sequence level. A sliding window anal...

Montano, M.M.; Kraus, W.L.; Katzenellenbogen, B.S., 1997: Identification of a novel transferable cis element in the promoter of an estrogen-responsive gene that modulates sensitivity to hormone and antihormone. The estrogen receptor (ER) is a ligand-regulated transcription factor that acts at the promoters of estrogen-regulated genes to modulate their expression. In the present study, we examined three estrogen-regulated promoters, namely the rat progest...

Esayan, S.A., 1989: Cheesemaking in Armenia in the light of the Urartu relics from the Ararat valley. The Kings Argishti I and Sarduri II, who ruled Urartu (present-day Armenia) in the 8th century B.C., had about 110 000 cattle and 200 000 sheep, supplying milk for butter and cheese. Archaeological excavations in 1970/71 at the citadel of Karmir-B...