The reaction of divinyl sulfone withalpha-eleostearic acid

1960 ◽  
Vol 37 (8) ◽  
pp. 400-402 ◽  
Author(s):  
Lida L. Placek ◽  
W. G. Bickford
Keyword(s):  
Eleostearic Acid ◽  
Divinyl Sulfone

scholarly journals Tung Oil-Based Production of High 3-Hydroxyhexanoate-Containing Terpolymer Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate-co-3-Hydroxyhexanoate) Using Engineered Ralstonia eutropha

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1084
Author(s):  
Hye Soo Lee ◽  
Sun Mi Lee ◽  
Sol Lee Park ◽  
Tae-Rim Choi ◽  
Hun-Suk Song ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Eleostearic Acid ◽  
Fossil Fuels ◽  
Ralstonia Eutropha ◽  
Wild Type ◽  
Medical Field ◽  
Tung Oil ◽  
Medium Chain Length ◽  
Partial Harvesting ◽  
Biodegradable Properties

Polyhydroxyalkanoates (PHAs) are attractive new bioplastics for the replacement of plastics derived from fossil fuels. With their biodegradable properties, they have also recently been applied to the medical field. As poly(3-hydroxybutyrate) produced by wild-type Ralstonia eutropha has limitations with regard to its physical properties, it is advantageous to synthesize co- or terpolymers with medium-chain-length monomers. In this study, tung oil, which has antioxidant activity due to its 80% α-eleostearic acid content, was used as a carbon source and terpolymer P(53 mol% 3-hydroxybytyrate-co-2 mol% 3-hydroxyvalerate-co-45 mol% 3-hydroxyhexanoate) with a high proportion of 3-hydroxyhexanoate was produced in R. eutropha Re2133/pCB81. To avail the benefits of α-eleostearic acid in the tung oil-based medium, we performed partial harvesting of PHA by using a mild water wash to recover PHA and residual tung oil on the PHA film. This resulted in a film coated with residual tung oil, showing antioxidant activity. Here, we report the first application of tung oil as a substrate for PHA production, introducing a high proportion of hydroxyhexanoate monomer into the terpolymer. Additionally, the residual tung oil was used as an antioxidant coating, resulting in the production of bioactive PHA, expanding the applicability to the medical field.

IDENTIFICATION OF CONJUGATED TRIENE FATTY ACIDS IN CERTAIN SEED OILS

1962 ◽  
Vol 40 (11) ◽  
pp. 2078-2082 ◽  
Author(s):  
C. Y. Hopkins ◽  
Mary J. Chisholm
Keyword(s):  
Fatty Acid ◽  
Eleostearic Acid ◽  
Octadecatrienoic Acid ◽  
Seed Oils ◽  
Punicic Acid ◽  
Calendula Officinalis ◽  
Conjugated Fatty Acid ◽  
Mild Conditions ◽  
Conjugated Triene ◽  
Major Acid

Seed oils were hydrolyzed under mild conditions and the major conjugated fatty acid of each oil was isolated and identified. In two families, species which were closely related botanically contained different but isomeric acids. Thus, in the Bignoniaceae, Jacaranda chelonia had cis trans,cis-8,10,12-octadecatrienoic acid as a major acid while Catalpa speciosa had trans,trans,cis-9,11,13-octadecatrienoic acid. In the Cucurbitaceae, Momordica charantia had the ordinary cis,trans,trans-9,11,13-octadecatrienoic (α-eleostearic) acid while M. balsamina had cis,trans,cis-9,11,13-octadecatrienoic (punicic) acid. M. balsamina is a new and convenient source of punicic acid. α-Eleostearic acid was identified as a major acid in examples of Valerianaceae and Rosaceae. Further proof was obtained that the fatty acid of Calendula officinalis (Compositae) is trans,trans,cis-8,10,12-octadecatrienoic acid.

ChemInform Abstract: Reaction of Secondary Phosphines and Phosphine Oxides with Divinyl Sulfone.

ChemInform ◽  
2010 ◽  
Vol 29 (51) ◽  
pp. no-no
Author(s):  
N. K. GUSAROVA ◽  
S. F. MALYSHEVA ◽  
N. A. CHERNYSHEVA ◽  
N. A. BELOGORLOVA ◽  
S. N. ARBUZOVA ◽  
...  
Keyword(s):  
Phosphine Oxides ◽  
Divinyl Sulfone ◽  
Secondary Phosphines

scholarly journals A Highly Selective Synthesis of Dialkenyl Sulfones via Cross-Metathesis of Divinyl Sulfone.

ChemInform ◽  
2007 ◽  
Vol 38 (15) ◽  
Author(s):  
Michal Bieniek ◽  
Dariusz Koloda ◽  
Karol Grela
Keyword(s):  
Selective Synthesis ◽  
Divinyl Sulfone ◽  
Cross Metathesis

Reactions of selenium dichloride and dibromide with divinyl sulfone: synthesis of novel four- and five-membered selenium heterocycles

2010 ◽  
Vol 51 (40) ◽  
pp. 5258-5261 ◽  
Author(s):  
Vladimir A. Potapov ◽  
Evgeny O. Kurkutov ◽  
Maxim V. Musalov ◽  
Svetlana V. Amosova
Keyword(s):  
Divinyl Sulfone ◽  
Selenium Dichloride

Chemical Modification of Cotton with Derivatives of Divinyl Sulfone

1961 ◽  
Vol 31 (4) ◽  
pp. 283-295 ◽  
Author(s):  
Giuliana C. Tesoro ◽  
Paul Linden ◽  
Stephen B. Sello
Keyword(s):  
Chemical Modification ◽  
Divinyl Sulfone ◽  
Derivatives Of

scholarly journals Antioxidant and anti-inflammatory effect of conjugated linolenic acid isomers against streptozotocin-induced diabetes

2011 ◽  
Vol 108 (6) ◽  
pp. 974-983 ◽  
Author(s):  
Siddhartha S. Saha ◽  
Mahua Ghosh
Keyword(s):  
Oxidative Stress ◽  
Linolenic Acid ◽  
Eleostearic Acid ◽  
Albino Rats ◽  
Punicic Acid ◽  
Conjugated Linolenic Acid ◽  
Frap Assay ◽  
Erythrocyte Morphology ◽  
Antioxidant Power ◽  
Anti Inflammatory

The present study was undertaken to evaluate the effect of α-eleostearic acid and punicic acid, two isomers of conjugated linolenic acid (CLnA) present in bitter gourd (Momordica charantia) and snake gourd oil (Trichosanthes anguina), respectively, against oxidative stress, inflammatory challenge and aberration in erythrocyte morphology due to streptozotocin (STZ)-induced diabetes. Male albino rats were divided into four groups consisting of eight animals in each group. The first group served as control and diabetes was induced in rats in groups 2–4 by a single intraperitoneal injection of STZ. Moreover, rats in groups 3 and 4 were treated with 0·5 % of α-eleostearic acid and 0·5 % of punicic acid of the total lipid given, respectively, by oral administration once per d. After administration, CLnA isomers had significantly reduced oxidative stress, lipid peroxidation and restored antioxidant and pro-inflammatory enzymes such as superoxide dismutase, catalase, and glutathione peroxidase, reduced glutathione, NO synthase level in pancreas, blood and erythrocyte lysate. The ferric reducing antioxidant power (FRAP) assay of plasma showed that CLnA treatment caused improvement in the FRAP value which was altered after STZ treatment due to an increased level of free radicals. Expression of inflammatory cytokines such as TNF-α and IL-6 in blood and expression of hepatic NF-κB (p65) increased significantly after STZ treatment due to increased inflammation which was restored with the administration of CLnA isomers. From the obtained results, it could be concluded that α-eleostearic acid and punicic acid showed potent antioxidant and anti-inflammatory activity with varying effectivity.

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