Results 61 to 70 of about 3,172,708 (264)

Lanthanide(III) complexes are more active inhibitors of the Fenton reaction than pure ligands [PDF]

, 2016
OBJECTIVES: This study is an extension to our finding of direct anti-oxidant activities of lanthanide(III) complexes with the heterocyclic compound, 5-aminoorotic acid (AOA).
Kostova, I., Martin, J., Mladěnka, P., Saso, Luciano   +3 more
core   +1 more source

Using Quinolin-4-Ones as Convenient Common Precursors for a Metal-Free Total Synthesis of Both Dubamine and Graveoline Alkaloids and Diverse Structural Analogues

Molecules
The Rutaceae family is one of the most studied plant families due to the large number of alkaloids isolated from them with outstanding biological properties, among them the quinoline-based alkaloids Graveoline 1 and Dubamine 2.
Rodrigo Abonia, Lorena Cabrera, Diana Arteaga, Daniel Insuasty, Jairo Quiroga, Paola Cuervo, Henry Insuasty   +6 more
doaj   +1 more source

Synthesis of novel [1,2,4]triazolo[1,5-b][1,2,4,5]tetrazines and investigation of their fungistatic activity

Beilstein Journal of Organic Chemistry, 2022
A series of novel [1,2,4]triazolo[1,5-b][1,2,4,5]tetrazines has been synthesized through oxidation reaction of the corresponding 3,6-disubstituted 1,2,4,5-tetrazines bearing amidine fragments.
Anna V. Korotina, Svetlana G. Tolshchina, Rashida I. Ishmetova, Natalya P. Evstigneeva, Natalya A. Gerasimova, Natalya V. Zilberberg, Nikolay V. Kungurov, Gennady L. Rusinov, Oleg N. Chupakhin, Valery N. Charushin   +9 more
doaj   +1 more source

Discovery of a novel 1,3,4-oxadiazol-2-one-based NLRP3 inhibitor as a pharmacological agent to mitigate cardiac and metabolic complications in an experimental model of diet-induced metaflammation [PDF]

arXiv, 2023
Inspired by the recent advancements in understanding the binding mode of sulfonylurea-based NLRP3 inhibitors to the NLRP3 sensor protein, we developed new NLRP3 inhibitors by replacing the central sulfonylurea moiety with different heterocycles.
arxiv  

Selective C(sp2)−H Halogenation of "click" 4-Aryl-1,2,3-triazoles [PDF]

, 2017
Selective bromination reactions of “click compounds” are described. Electron-neutral and electron-deficient arenes selectively undergo unprecedented Pd-catalyzed C–H ortho-halogenations assisted by simple triazoles as modular directing groups, whereas ...
Correa Navarro, Arkaitz, Goitia, Asier, Gómez Bengoa, Enrique   +2 more
core   +2 more sources

Electronic Properties of Vinylene-Linked Heterocyclic Conducting Polymers: Predictive Design and Rational Guidance from DFT Calculations [PDF]

Journal of Physical Chemistry C, 115, 18333 (2011), 2011
The band structure and electronic properties in a series of vinylene-linked heterocyclic conducting polymers are investigated using density functional theory (DFT). In order to accurately calculate electronic band gaps, we utilize hybrid functionals with fully periodic boundary conditions to understand the effect of chemical functionalization on the ...
arxiv   +1 more source

Photochemistry of N-(selenoalkyl)-phthalimides. Formation of N, Se-heterocyclic systems [PDF]

, 2015
A variety of N-(selenomethyl)alkyl-phthalimides (alkyl = -(CH2)n-; n = 2-5, 1a, b, d, e) and N-(selenobenzyl)propyl phthalimide (1c) were synthesized and their photochemistry was studied at λ = 300 nm.
Argüello, Juan Elias, Heredia, Adrián Alberto, Oksdath Mansilla, Gabriela, Peñeñory, Alicia Beatriz   +3 more
core   +1 more source

Uso de una mezcla dioxane/MeOH/NaBH4 en caliente como un medio conveniente para la reducción química selectiva del doble enlace C=C en sistemas α,β-insaturados

Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2021
Productos de Knoevenagel diversamente sustituidos fueron sometidos a reducción con una solución de NaBH4 en MeOH/p-dioxano a 70 oC. A través de este proceso, se alcanzó la reducción selectiva de sus dobles enlaces C=C en todos los casos. Las condiciones
Rodrigo Abonia, Andres C. García
doaj   +1 more source

Structures of cycloserine and 2-oxazolidinone probed by X-ray photoelectron spectroscopy [PDF]

, 2013
The electronic structures and properties of 2-oxazolidinone and the related compound cycloserine (CS) have been investigated using core and valence photoelectron spectroscopy and theoretical calculations. Isomerization of the central oxazolidine heterocycle and the addition of an amino group yields cycloserine.
arxiv   +1 more source

Molecular Split-Ring Resonators Based on Metal String Complexes [PDF]

J. Phys. Chem. C 118, 3766 (2014), 2014
Metal string complexes or extended metal atom chains (EMACs) belong to a family of molecules that consist of a linear chain of directly bonded metal atoms embraced helically by four multidentate organic ligands. These four organic ligands are usually made up of repeating pyridyl units, single-nitrogen-substituted heterocyclic annulenes, bridged by ...
arxiv   +1 more source