F:Flammable;
57-11-4Relevant articles and documents
Burton
, p. 4117 (1949)
Anti-diabetic potential of ursolic acid stearoyl glucoside: A new triterpenic gycosidic ester from Lantana camara
Kazmi, Imran,Rahman, Mahfoozur,Afzal, Muhammad,Gupta, Gaurav,Saleem, Shakir,Afzal, Obaid,Shaharyar, Md.Adil,Nautiyal, Ujjwal,Ahmed, Sayeed,Anwar, Firoz
, p. 142 - 146 (2012)
A new stearoyl glucoside of ursolic acid, urs-12-en-3β-ol-28-oic acid 3β-d-glucopyranosyl-4′-octadecanoate and other compounds were isolated from the leaves of Lantana camara L. The structure of this new glycoside was elucidated and established by standard spectroscopic methods. In streptozotocin-induced diabetic rats it showed significant reduction in blood glucose level. Crown Copyright
ALL-CIS-3,6,9,12,15-OCTADECAPENTAENOIC ACID: A PROBLEM OF RESOLUTION IN THE GC ANALYSIS OF MARINE FATTY ACIDS
Napolitano, G. E.,Ratnayake, W. M. N.,Ackman, R. G.
, p. 1751 - 1756 (1988)
The GC properties of 18:5n3 (all-cis-3,6,9,12,15-octadecapentaenoic acid) of algal origin are described for analysis on the popular polyglycol liquid phase Carbowax-20M "bonded" in flexible fused silica open-tubular columns.It is shown with oyster lipids that this fatty acid could be confused with early eluting 20:1 isomers such as the 20:1n11, common in marine animal oils and lipids, and coincides exactly with 20:1n15 of plant origin.Partial hydrazine reduction is demonstrated as a useful technique for confirming the structure of 18:5n3.Key Word Index-Octadecapentaenoic acid; gas-liquid chromatography; phytoplankter fatty acids; marine lipids; hydrazine reduction.
Practical scale up synthesis of carboxylic acids and their bioisosteres 5-substituted-1H-tetrazoles catalyzed by a graphene oxide-based solid acid carbocatalyst
Mittal, Rupali,Kumar, Amit,Awasthi, Satish Kumar
, p. 11166 - 11176 (2021/03/31)
Herein, catalytic application of a metal-free sulfonic acid functionalized reduced graphene oxide (SA-rGO) material is reported for the synthesis of both carboxylic acids and their bioisosteres, 5-substituted-1H-tetrazoles. SA-rGO as a catalytic material incorporates the intriguing properties of graphene oxide material with additional benefits of highly acidic sites due to sulfonic acid groups. The oxidation of aldehydes to carboxylic acids could be efficiently achieved using H2O2as a green oxidant with high TOF values (9.06-9.89 h?1). The 5-substituted-1H-tetrazoles could also be effectively synthesized with high TOF values (12.08-16.96 h?1). The synthesis of 5-substituted-1H-tetrazoles was corroborated by single crystal X-ray analysis and computational calculations of the proposed reaction mechanism which correlated well with experimental findings. Both of the reactions could be performed efficiently at gram scale (10 g) using the SA-rGO catalyst. SA-rGO displays eminent reusability up to eight runs without significant decrease in its productivity. Thus, these features make SA-rGO riveting from an industrial perspective.
Homogeneous catalytic hydrogenation of lipids in aqueous dispersions and bacterial cell membranes with an efficient water-soluble Pd(II)-sulfosalan catalyst, Na2[Pd(HSS)]
Bunda, Szilvia,Gombos, Réka,Joó, Ferenc,Nagyházi, Brigitta
, (2020/09/17)
The recently synthesized water-soluble Na2[Pd(HSS)] (Na2HSS = hydrogenated sulfonated salen) was shown to be a non-toxic, active catalyst for modification of model and biomembranes by homogeneous catalytic hydrogenation. Hydrogenation of the unsaturated fatty acyl residues in soy-bean lecithin liposomes and in biomembranes of intact Pseudomonas putida F1 cells was accompanied by substantial cis-trans isomerization around the C[dbnd]C double bonds. The hydrogenations could be run in aqueous media under mild conditions (25 °C, 1 bar H2). Partial saturation (up to 10% conversion) of the membrane lipids of P. putida F1 did not damage the cells.
