Global ETD Search
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Showing 1 to 12 of 12 for “"Dicarbonyls"”.
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Advanced glycation end product precursors in diabetes: a crucial link between oxidative stress and inflammation?
… reaction. During AGE formation, reactive α-dicarbonyls are formed, such as glyoxal (GO) and methylglyoxal (MG). These α-dicarbonyls are present at elevated concentrations in diabetes, and are frequently implicated in the initiation and progression of diabetic complications. Previous research …
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Synthesis and stabilities of mononuclear iron (II) dicarbonyls derived from neutral NNS ligands : structural models of the apo-active site of mono-iron (Hmd) hydrogenase
Herein is described the syntheses and characterization of iron dicarbonyl complexes derived from tridentate ortho-substituted Schiff base pyridine/thioether ligands ([subscript R]NNS) and (Fe(CO)₄(Br)₂). Two general synthetic routes are reported for the isolation of such iron carbonyls. First, …
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The Role of Advanced Glycation End Products (AGEs) through the TRPA-1/NRF-2 Activation Pathway in the Neurodegenerative Diseases
… caused by highly reactive and toxic α-dicarbonyls, such as methylglyoxal (MGO) derived from glycolysis, is associated with various age-related diseases including diabetic complications and neurodegenerative diseases. Aging and long-term hyperglycemia causes enhanced production of this …
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Combinational Therapy to Mitigate α-Dicarbonyl Toxicity
… diabetes have high concentrations of reactive α-dicarbonyls (α-DCs) like, methylglyoxal (MGO). The abundance of α-DCs form advanced glycation end products (AGEs); in turn, the accumulation of AGEs has been linked to secondary complications. Secondary complications include diabetic neuropathy, …
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Rhodium-zeolite hydroformylation of propylene
… drying the zeolite in air at 190ºC, two rhodium dicarbonyls, Rh(CO)₂(O<sub>z</sub>)₂-NaY and Rh(CO)₂(O<sub>z</sub>)(H₂O)-NaY, were formed. The rhodium carbonyls were reacted with n-hexyl diphenylphosphine to determine rhodium locations. Rh(CO)₂(O<sub>z</sub>)₂-NaY was located at the surface while …
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Quantum Beat Spectroscopy and Radiationless Transitions
… intersystem crossing of these simple (alpha)-dicarbonyls. We have analyzed the beats by two methods to obtain information concerning the density of interacting states and the average intramolecular coupling energies. The simpler beat patterns can be analyzed using a perturbation theory …
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Surfactant Behavior in Atmospheric Aerosols
… studied systems of long chain fatty acids and α-dicarbonyls in aqueous aerosol mimics by using pendant drop tensiometry to measure surface tension, UV-VIS to measure the formation of light-absorbing products, Aerosol chemical ionization mass spectrometry (Aerosol-CIMS) to characterize the …
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Synthesis and application of rhodium(I) Fischer carbene complexes
… ligand is the most electrondonating whilst the dicarbonyls were found to be the least donating in the series. In addition, the increased electron donation of the aminocarbene ligands compared to the ethoxycarbene ligands was found to significantly influence the redox potentials of the metal …
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Development of asymmetric catalysts based on planar-chiral [pi]-complxes of nigrogen heterocycles with iron
… of certain 0-acylated enolates to beta-dicarbonyls was also shown to be catalyzed by our planar-chiral pi-complexes. A chiral analog of PPY was synthesized and found to be the catalyst of choice for this oxygen-to-carbon acyl transfer reaction. Enol carbonates derived from the …
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The effect of brewer’s spent grain melanoidins on the formation of Maillard reaction products in food model systems
The Maillard reaction (MR) plays a critical role in determining the final quality of foods and is a key focus in food science research. Numerous studies have explored various strategies that have the common objectives of reducing the formation of potentially toxic compounds, enhancing the formation …