Results 81 to 90 of about 15,583 (249)

Green and Sustainable Chemistry Approaches on Azide‐Based Click Reactions in Polymer Science

Macromolecular Rapid Communications, Volume 46, Issue 23, December 5, 2025.
Click Chemistry, particularly the azide‐alkyne cycloaddition (AAC) reaction, has revolutionized polymer chemistry, enabling precise and efficient synthesis of advanced functional materials. With its high regioselectivity, mild reaction conditions, and versatility, AAC reactions align closely with the principles of Green and Sustainable Chemistry.
Hatice Mutlu, Bercis Pektas, C. Remzi Becer, Azra Kocaarslan   +3 more
wiley   +1 more source

Diaquabis(picolinato N-oxide-κ2O,O′)zinc(II)

Acta Crystallographica Section E, 2008
In the title compound, [Zn(C6H4NO3)2(H2O)2], the Zn atom is located on a centre of inversion and shows a distorted octahedral coordination geometry. Two aqua ligands occupy the axial positions and four O atoms of the two chelating picolinic acid N-oxide ...
Xiu-Bing Li, Run-Ling Shang, Bai-Wang Sun   +2 more
doaj   +1 more source

Vanadyl complexes with dansyl-labelled dipicolinic acid ligands: synthesis, phosphatase inhibition activity and cellular uptake studies [PDF]

, 2016
Vanadium complexes have been previously utilised as potent inhibitors of cysteine based phosphatases (CBPs). Herein, we present the synthesis and characterisation of two new fluorescently labelled vanadyl complexes (14 and 15) with bridged di-picolinic ...
Agostino Cilibrizzi, Anderie, Cirri, Costa Pessoa, Crans, Cuncic, Dyson, Gillian Whyte, Granier, He, Huyer, Inna Guterman, Juliet Collins, Kolmodin, Levina, Li, Lodyga-Chruscinska, Lok Hang Mak, Low, Lu, Lu, Lu, Mak, Makinen, Marina Fedorova, McLauchlan, McLauchlan, Mercey, Nakai, Ostman, Pessoa, Posner, Posner, Ramon Vilar, Robin Leatherbarrow, Rosivatz, Rudiger Woscholski, Sakurai, Salmeen, Schmid, Schmid, Scott, Seale, Thompson, Uto, Vanhaesebroeck, Walker, Wang, Xu, Yuan, Zhang, Zhang   +51 more
core   +1 more source

Electrochemical Synthesis of Nicotinic Acid from ��-Picoline

, 1988
Department of Chemistry, Kashmir University, Srinagar-190 006 Manuscript received 18 February 1988, revised 19 May 1988, accepted 8 June 1988 Electrosyathesis or nicotinic acid from -picoline by potentiostatic oxidation is reported. Efficencies of different electrodes are compared by considering changes in concentration of anolyte and substrate ...
P. N. GUPTA, G. M. RATHER
openaire   +1 more source

Tryptophan derivatives as non‐invasive diagnostic indicators for obesity‐related MASLD in children and adolescents

Diabetes, Obesity and Metabolism, Volume 27, Issue 12, Page 7544-7560, December 2025.
Abstract Aims Metabolic dysfunction‐associated steatotic liver disease (MASLD) represents a major health burden in children and adolescents with obesity. This study aimed to characterize metabolic alterations associated with obesity‐related MASLD and to evaluate the potential of tryptophan (TRP)‐derived metabolites as non‐invasive biomarkers for early ...
Shumin Zhan, Xingyun Wang, Chen Wang, Bowen Zhu, Jianfang Gao, Zhou Peng, Rui Wang, Yun Yang, Liang Zhang, Tengfei Wang, Jiaoxiang Wu, Wei Wu, Ke Huang, Guanping Dong, Qiannan Ren, Shan Wang, Senjie Wang, Xuelian Zhou, Liling Xu, Junfen Fu, Xirong Guo   +20 more
wiley   +1 more source

Investigation of Pyridine Carboxylic Acids in CM2 Carbonaceous Chondrites: Potential Precursor Molecules for Ancient Coenzymes [PDF]

The distribution and abundances of pyridine carboxylic acids (including nicotinic acid) in eight CM2 carbonaceous chondrites (ALH 85013, DOM 03183, DOM 08003, EET 96016, LAP 02333, LAP 02336, LEW 85311, and WIS 91600) were investigated by liquid ...
Callahan, Michael P., Dworkin, Jason P., Gerakines, Perry A., House, Christopher H., Smith, Karen E.   +4 more
core   +4 more sources

Fe‐Photocatalyzed Decarboxylative Giese‐Type Reaction of α‐N, O or S Carboxylic Acids: Insight into the Mechanism of the Radical Formation

Advanced Synthesis &Catalysis, Volume 367, Issue 21, November 13, 2025.
Electron‐deficient alkenes can be functionalized with α‐amino, α‐alkoxy and α‐alkylthio radicals formed by Fe‐photocatalyzed decarboxylation of the corresponding carboxylic acids. The reactions proceed under smooth ligandless conditions with inexpensive base and in the absence of oxidant. A mechanistic computational TD‐DFT study supports the occurrence
Fernando Pérez‐Maseda, María Martín, Jorge Labrador‐Santiago, Inés Corral, Diego J. Cárdenas   +4 more
wiley   +1 more source

Caloric restriction reveals a metabolomic and lipidomic signature in liver of male mice [PDF]

, 2014
Lipid composition, particularly membrane unsaturation, has been proposed as being a lifespan determinant, but it is currently unknown whether caloric restriction (CR), an accepted life-extending intervention, affects cellular lipid profiles.
Jové, Mariona, Naudí, Alba, Pamplona, Reinald, Portero-Otín, Manuel, Ramírez-Núñez, Omar, Selman, Colin, Withers, Dominic J.   +6 more
core   +3 more sources

Origin and characterization of cyclodepsipeptides: Comprehensive structural approaches with focus on mass spectrometry analysis of alkali‐cationized molecular species

Mass Spectrometry Reviews, Volume 44, Issue 6, Page 1013-1098, November/December 2025.
Abstract Cyclodepsipeptides (CDPs) represent a huge family of chemically and structurally diverse molecules with a wide ability for molecular interactions. CDPs are cyclic peptide‐related natural products made up of both proteinogenic and nonproteinogenic amino acids linked by amide and ester bonds.
Sophie Liuu, Annelaure Damont, Alain Perret, Olivier Firmesse, François Becher, Gwenaëlle Lavison‐Bompard, Amandine Hueber, Amina S. Woods, Ekaterina Darii, François Fenaille, Jean‐Claude Tabet   +10 more
wiley   +1 more source