Results 61 to 70 of about 411,018 (337)

Chain Propagation Mechanism of Fischer–Tropsch Synthesis: Experimental Evidence by Aldehyde, Alcohol and Alkene Addition

Reactions, 2021
Fischer–Tropsch synthesis (FTS) produces hundreds of hydrocarbons and oxygenates by simple reactants (CO + H2) and the detailed chain propagation mechanism is still in dispute.
Liping Zhou, Junhu Gao, Xu Hao, Yong Yang, Yongwang Li   +4 more
doaj   +1 more source

Aldehyde-containing urea-absorbing polysaccharides [PDF]

, 1977
A novel aldehyde containing polymer (ACP) is prepared by reaction of a polysaccharide with periodate to introduce aldehyde groups onto the C2 - C3 carbon atoms.
Hsu, G. C., Marsh, H. E., Jr., Mueller, W. A.   +2 more
core   +1 more source

Characterization of the human omega-oxidation pathway for omega-hydroxy-very-long-chain fatty acids [PDF]

, 2008
Very-long-chain fatty acids (VLCFAs) have long been known to be degraded exclusively in peroxisomes via beta-oxidation. A defect in peroxisomal beta-oxidation results in elevated levels of VLCFAs and is associated with the most frequent inherited ...
Dacremont, Georges, Kemp, Stephan, Ofman, Rob, Sanders, Robert-Jan, Wanders, Ronald J. A.   +4 more
core   +2 more sources

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Synthesis and use of a stable aminal derived from TsDPEN in asymmetric organocatalysis [PDF]

, 2010
A stable aminal formed stereoselectively from (R,R)-N-tosyl-1,2-diphenyl-1,2-ethylenediamine (TsDPEN) is capable of asymmetric organocatalysis of Diels-Alder and alpha-amination reactions of ...
Clarkson, Guy J., Gosiewska, Silvia, Soni, Rina, Wills, Martin   +3 more
core   +1 more source

Iron homeostasis disruption and lipid peroxidation in skeletal muscle during short‐term immobilization

FEBS Open Bio, EarlyView.
14‐day casting‐induced immobilization reduced gastrocnemius muscle mass and increased non‐heme iron and ferritin heavy chain levels. Despite iron accumulation, transferrin receptor 1 and iron regulatory protein 2 were paradoxically upregulated. Lipid peroxidation was elevated without compensatory antioxidant responses.
Haruka Yokogawa, Kazuhiko Higashida, Naoya Nakai   +2 more
wiley   +1 more source

Convergence of the 5-LOX and COX-2 pathways: heme-catalyzed cleavage of the 5S-HETE-derived di-endoperoxide into aldehyde fragments

Journal of Lipid Research, 2009
Oxygenation of the 5-lipoxygenase product 5S-hydroxyeicosatetraenoic acid by cyclooxygenase-2 yields a bicyclic di-endoperoxide. The di-endoperoxide contains two peroxides spanning from carbons 9 to 11 and 8 to 12, and two hydroxyls at carbons 5 and 15 ...
Markus Griesser, William E. Boeglin, Takashi Suzuki, Claus Schneider   +3 more
doaj   +1 more source

Nature's Starships II: Simulating the Synthesis of Amino Acids in Meteorite Parent Bodies

, 2015
Carbonaceous chondrite meteorites are known for having high water and organic material contents, including amino acids. Here we address the origin of amino acids in the warm interiors of their parent bodies (planetesimals) within a few million years of ...
Cobb, Alyssa K., Pearce, Ben K. D., Pudritz, Ralph E.   +2 more
core   +1 more source

A comparative study of the electrochemical properties of vitamin B-6 related compounds at physiological pH [PDF]

, 2011
A comparative study of vitamin B6 group and related compounds in buffered solutions using electrochemical techniques has been performed at neutral pH.
A. Pocker, A. Temizer, A.E. Braunstein, A.J. Bard, A.J. Román, A.K. Lunn, C.M. Harris, C.M. Metzler, D. Manousek, E.E. Snell, H. Lund, J. Gonzalez-Rodríguez, J. Llor, J. Llor, J. M. Sevilla, J.M. Rodríguez Mellado, J.M. RodrÍguez Mellado, J.M. RodrÍguez Mellado, J.M. RodrÍguez Mellado, L. Camacho, M. Blázquez, M. Blázquez, M. Heyrovský, M. Stanulovic, M.L. Ahrens, M.S. Ibrahim, N.P. Bazhulina, P. Zuman, P. Zuman, R. Izquierdo, R. Izquierdo, R. Schwartz, S.G. Mairanoskii, T. Pineda, T. Pineda, T. Pineda, V. Mirceski, W.F. Wolkers, Y.V. Morozov   +38 more
core   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source