Synonyms:Acids,fatty;Alkanoic acids;Alkyl fatty acids;Carboxylic acids, fatty;FFA;Fattyacid;Free fatty acids;Nonesterified fatty acids;Normal fatty acids;Straight-chain fatty acids;
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The study focuses on the synthesis and characterization of specific deuterated derivatives of long-chain ceramides [EOS] and [EOP] found in the stratum corneum lipids, which are essential components of the skin's barrier function. The researchers replaced linoleic acid with a palmitic acid branched with a methyl group and introduced deuteration in the branched and terminal methyl groups to create these derivatives. The synthesized ceramides were then prepared for neutron scattering investigations. The chemicals used in the study included various fatty acids, deuterated compounds, and ceramide precursors, such as 6-bromohexanoic acid ethyl ester, malonic acid ethyl ester, and lithium aluminum deuteride. These chemicals served the purpose of creating the branched and deuterated fatty acids, which were then used to synthesize the ceramides [EOS] and [EOP]. The synthesized deuterated ceramides are valuable tools for investigating the influence of these long-chain ceramide species on the nanostructure of stratum corneum lipid model membranes, as they can be detected in the lipid model membranes and help to understand their structural role in the skin's barrier.
The study conducted a biochemical characterization and FAD-binding analysis of oleate hydratase from Macrococcus caseolyticus, an enzyme involved in the hydration of unsaturated fatty acids. Researchers cloned the fatty acid hydratase gene and expressed it in Escherichia coli, resulting in a 68 kDa dimeric enzyme that was found to be FAD-dependent and most active with oleic acid. The study utilized various fatty acid substrates, coenzymes such as FAD, FMN, NAD+, and NADP+, and solvents including ethanol and acetone, to investigate the enzyme's substrate specificity, its dependence on FAD, and the role of specific amino acid residues in FAD binding, ultimately identifying the enzyme as an oleate hydratase with unique substrate preferences and FAD-binding properties.
The research aimed to investigate the relationship between the chirality of allylic alcohols and their anti-rice blast fungus activity. The study was motivated by the discovery of various oxygenated unsaturated fatty acids in rice plants, which play a crucial role in defending against rice blast fungus. Specifically, the allylic alcohols 16-hydroxy-γ-linolenic acid 1, 9-hydroxylinoleic acid 2, and 13-hydroxylinoleic acid 3 were of interest, as they accumulate in infected rice plants. The researchers synthesized both enantiomers of these allylic alcohols starting from the original fatty acids 4 and 5 and assessed their anti-fungal activities. The conclusion drawn from the study was that there was no noticeable correlation between the activity and chirality of the allylic alcohols. Chemicals used in the process included γ-linolenic and linoleic acids, hydroperoxy fatty acids, allylic alcohols, and epoxy fatty acids, among others. The synthesis involved various reagents and solvents such as n-BuLi, Pr2NH, CH2N2, (PhCO)2O/Et3N, and HPLC for purification and separation, as well as lipase PS, vinyl acetate, and thiacrown ether for the resolution of enantiomers.
The research focuses on the optimization of (2,3-dihydro-1-benzofuran-3-yl)acetic acids, with the aim of discovering a non-free fatty acid-like, highly bioavailable G protein-coupled receptor 40/free fatty acid receptor 1 (GPR40/FFA1) agonist that serves as a glucose-dependent insulinotropic agent for the treatment of type 2 diabetes. The study identified compound 16, also known as TAK-875, as a promising candidate due to its low lipophilicity, high resistance to β-oxidation, and long-acting pharmacokinetic profile, which resulted in significant reduction of plasma glucose and increased insulin secretion in type 2 diabetic rats. The research involved the synthesis and evaluation of various (2,3-dihydro-1-benzofuran-3-yl)acetic acid derivatives, utilizing chemicals such as ADDP, P(n-Bu)3, toluene, NaOH, m-CPBA, oxone, TBAF, and a range of biphenylylmethanols and phenols, among others, to optimize the compounds' pharmacokinetic profiles and reduce undesirable lipophilic properties associated with free fatty acids. The successful identification of TAK-875 as a potential anti-diabetic drug candidate concludes the study, highlighting its potential in human clinical trials for the treatment of type 2 diabetes.
The study focuses on the design, synthesis, and in vitro evaluation of a series of pyrazole-based fatty acid binding protein (FABP) 3 ligands. The researchers aimed to develop subtype-selective FABP ligands, specifically targeting heart fatty acid binding protein (FABP3), which is involved in lipid homeostasis and the uptake and transport of fatty acids towards mitochondrial β-oxidation systems. The study utilized a structure-guided approach, comparing the X-ray crystallographic structures of adipocyte FABP (FABP4) with the selective inhibitor BMS309403 and FABP3 with elaidic acid. Key chemicals used in the study include chalcone derivatives, substituted phenylhydrazines HCl, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) for oxidation, BBr3 for demethylation, and various alkyl bromo alkanoates for alkylation. These chemicals were used to synthesize 1,3,5-trisubstituted pyrazole derivatives, which were then tested for their binding-inhibitory activity towards FABP3 and FABP4. The purpose of these chemicals was to create ligands that could selectively bind to FABP3, potentially leading to the discovery of new drugs for the treatment of conditions related to lipid metabolism.
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