Action of Lead Tetraacetate upon Hydroxylated Fat Acids and Related Compounds. I. Hydroxylated Oleic Acid, Ethyl Oleate and Oleyl Alcohol1

1940 ◽  
Vol 62 (9) ◽  
pp. 2305-2309 ◽  
Author(s):  
John T. Scanlan ◽  
Daniel Swern
Keyword(s):  
Oleic Acid ◽  
Ethyl Oleate ◽  
Lead Tetraacetate ◽  
Related Compounds

Continuous esterification of oleic acid to ethyl oleate under sub/supercritical conditions over γ-Al2O3

2018 ◽  
Vol 232 ◽  
pp. 155-163 ◽  
Author(s):  
Jiuxu Liu ◽  
Yue Nan ◽  
Xinlei Huang ◽  
Jesse Q. Bond ◽  
Lawrence L. Tavlarides
Keyword(s):  
Oleic Acid ◽  
Ethyl Oleate ◽  
Supercritical Conditions

Nucleic acid related compounds. 78. Stereocontrolled syntheses of 6′(E and Z)-halovinyl analogues from uridine-derived vinylsulfones via vinyltin intermediates

1993 ◽  
Vol 71 (2) ◽  
pp. 192-198 ◽  
Author(s):  
Stanislaw F. Wnuk ◽  
Morris J. Robins
Keyword(s):  
Nucleic Acid ◽  
Trifluoroacetic Acid ◽  
Bond Cleavage ◽  
Lead Tetraacetate ◽  
Acetylenic Derivative ◽  
Vinyl Derivative ◽  
High Yields ◽  
Related Compounds

Treatment of the 6′(E)-tosylvinyl homonucleoside 1a with Bu3SnH/AIBN/toluene/Δ gave separable mixtures of 6′-vinylstannanes 2a(E/Z) in high yields. Stereospecific halodestannylations with N-iodosuccinimide, bromine, and N-bromosuccinimide proceeded smoothly to give the 6′(E or Z)-iodo(and bromo) vinyl compounds with retention of configuration. Chlorine or iodobenzene dichloride effected moderately stereoselective chlorodestannylation. Treatment of 2a with NH4F/MeOH/Δ resulted in carbon–tin bond cleavage to give the free vinyl derivative 4a. Aqueous trifluoroacetic acid effected concomitant protiodestannylation and deprotection of 2a to give 4b. Treatment of 2a(E) with lead tetraacetate/acetonitrile and deprotection afforded acetylenic derivative 3b.

scholarly journals Satiety from fat? Adverse effects of intestinal infusion of sodium oleate

1997 ◽  
Vol 273 (5) ◽  
pp. R1779-R1785 ◽  
Author(s):  
Israel Ramirez ◽  
Michael G. Tordoff ◽  
Mark I. Friedman
Keyword(s):  
Oleic Acid ◽  
Fatty Acid ◽  
Food Intake ◽  
Eating Behavior ◽  
Sodium Oleate ◽  
Cell Damage ◽  
Ethyl Oleate ◽  
Intestinal Lumen ◽  
Ldh Activity ◽  
Intestinal Infusion

To determine whether damage to the intestinal mucosa by oleic acid causes the suppression of food intake observed in response to intraintestinal infusion of the fatty acid, we measured lactate dehydrogenase (LDH) activity, a marker for cell damage, in the intestinal lumen after intestinal infusion of fatty acid under conditions similar to those employed in studies of eating behavior. Infusions of 25 or 51 mM sodium oleate (neutralized oleic acid) markedly and rapidly increased LDH activity, whereas infusions of saline had little or no effect. Infusion of octanoate, which has been reported to be ineffective in reducing eating behavior, did not increase intestinal LDH activity relative to saline infusion. Similarly, infusion of ethyl oleate or free (nonneutralized) oleic acid neither increased luminal LDH activity nor suppressed food intake. Infusion of sodium oleate also produced a strong conditioned aversion to sucrose. The results strongly suggest that the suppression of food intake induced by intraintestinal infusion of sodium oleate is due to the injurious effects of this unphysiological form of the fatty acid.

scholarly journals Oxidation of Ethyl Oleate by Lead Tetraacetate

1960 ◽  
Vol 63 (3) ◽  
pp. 502-505
Author(s):  
Yoshiharu Matsubara ◽  
Syoji Wakabayashi ◽  
Shigeto Nakamitu
Keyword(s):  
Ethyl Oleate ◽  
Lead Tetraacetate

Spectrophotometric Studies of the Oxidation of Fats. I. Oleic Acid, Ethyl Oleate and Elaidic Acid1

1945 ◽  
Vol 67 (8) ◽  
pp. 1285-1292 ◽  
Author(s):  
Ralph T. Holman ◽  
Walter O. Lundberg ◽  
Walter M. Lauer ◽  
George O. Burr
Keyword(s):  
Oleic Acid ◽  
Ethyl Oleate

scholarly journals OLEIC ACID AND RELATED COMPOUNDS AS GROWTH FACTORS FOR LACTIC ACID BACTERIA

1947 ◽  
Vol 170 (2) ◽  
pp. 619-630
Author(s):  
William L. Williams ◽  
Harry P. Broquist ◽  
Esmond E. Snell
Keyword(s):  
Lactic Acid ◽  
Oleic Acid ◽  
Growth Factors ◽  
Lactic Acid Bacteria ◽  
Related Compounds

scholarly journals ENZYMATIC PRODUCTION OF ETHYL OLEATE ESTER USING A LIPASE FROM CANDIDA ANTARCTICA B

2012 ◽  
Vol 2 ◽  
pp. 21
Author(s):  
N. Sampaio Neta ◽  
J. A. C. Cunha ◽  
S. O. Sancho ◽  
R. F. A. Abreu ◽  
D. F. Pontes ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Sodium Sulfate ◽  
Ethyl Oleate ◽  
Reaction Times ◽  
Candida Antarctica ◽  
Enzymatic Esterification ◽  
Type B ◽  
Enzymatic Production ◽  
Wide Range ◽  
Candida Antarctica B

Lipases are biocatalysts of great importance in different areas, being able to catalyze reactions in aqueous or organic media. Furthermore, these enzymes are capable of using several substrates being stable in a wide range of pH and temperatures. Lipases promote the esterification between fatty acids and ethanol producing oleate esters. The aim of this work is to produce ethyl oleate ester by enzymatic esterification of oleic acid with ethanol. A lipase from Candida antarctica type B was used at a temperature of 55 °C. The reaction was conducted using oleic acid, sodium sulfate anhydrous, lipase and ethanol, with a ratio of oleic acid (0.03 mol or 10 ml), lipase (0.1 mol or 0.01 g), sodium sulfate anhydrous (5 g) and ethanol 99 % (100 ml). Several reaction times were studied, namely 48, 72, 96 and 120 hours. Nuclear Magnetic Resonance (1H and 13C) and Infrared spectra confirmed the production of ethyl oleate ester for the studied conditions. The highest ethyl oleate production yield was obtained for 96 hours reaction time. Ethyl oleate esters have been reported to possess interesting applications in several industrial fields, such as food, aromatics, cosmetics, detergents, flavors and pharmaceuticals.

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