Results 41 to 50 of about 132,796 (171)

Synthesis of Compounds of the Pyrimidine Series Based on the Reactions of 3-Arylmethylidenefuran-2(3H)-ones with N,N-Binucleophilic Reagents

open access: yesMolecules, 2017
The arylmethylidene derivatives of furan-2(3H)-ones are important building blocks for the synthesis of various heterocyclic compounds containing pyrimidine and pyridazine structural fragments, analogues of nitrogen-containing bases of pyrimidine series ...
Tatyana Aniskova   +2 more
doaj   +1 more source

Synthesis and (Spectro)electrochemical Behavior of 2,5-Diferrocenyl-1- phenyl-1 H-phosphole

open access: yes, 2013
2,5-Diferrocenyl-1-phenyl-1H-phosphole (3) has successfully been prepared by a cyclization reaction of phenylphosphine with 1,4-diferrocenyl butadiyne.
D. Miesel   +4 more
semanticscholar   +1 more source

Quantum transport through molecular wires [PDF]

open access: yesInternational Journal of Modern Physics B (IJMPB), Volume: 23, Issue: 2 (2009) pp. 177-187, 2008
We explore electron transport properties in molecular wires made of heterocyclic molecules (pyrrole, furan and thiophene) by using the Green's function technique. Parametric calculations are given based on the tight-binding model to describe the electron transport in these wires. It is observed that the transport properties are significantly influenced
arxiv   +1 more source

Antinociceptive properties of new coumarin derivatives bearing substituted 3,4-dihydro-2H-benzothiazines

open access: yesDARU Journal of Pharmaceutical Sciences, 2014
BackgroundCoumarins are an important class of widely distributed heterocyclic natural products exhibiting a broad pharmacological profile. In this work, a new series of coumarins bearing substituted 3,4-dihydro-2H-benzothiazines were described as ...
M. Alipour   +7 more
semanticscholar   +1 more source

Acetylcholinesterase inhibitors with a thiazolium scaffold: structural features and binding modes

open access: yesЖурнал органічної та фармацевтичної хімії, 2019
Aim. To assess the structural features of substituents and the role of a thiazolium scaffold in mechanisms of acetylcholinesterase inhibition by thiazolium salts. Results and discussion. On the basis of activities of model compounds at pH 6.5 and pH 8.0
O. L. Kobzar   +5 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]

open access: yesarXiv, 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  

Synthesis and Characterization of a New Series of [1, 3]-Oxazepine Compounds from Heterocyclic Schiff Bases

open access: yesZanco Journal of Pure and Applied Sciences, 2023
      In this study a new Series of aromatic heterocyclic [1, 3]-oxazepine have been synthesized by two steps. The first-step included synthesis of imine derivatives (1–7) using glacial acetic acid as a catalyst in the condensation reaction of 4-(6 ...
Roshna B. Nadr, Bana S. Abdulrahman
doaj   +1 more source

Charge Transport through Conjugated Azomethine-based Single Molecules for Optoelectronic Applications [PDF]

open access: yesOrganic Electronics, 34(2016), 38-41, 2016
The single-molecule conductance of a 3-ring, conjugated azomethine was studied using the mechanically controlled breakjunction technique. Charge transport properties are found to be comparable to vinyl-based analogues; findings are supported with density functional calculations. The simple preparation and good transport properties make azomethine-based
arxiv   +1 more source

3-{5-Bromo-2-[(triphenylphosphanylidene)amino]phenyl}-4,5-dihydro-1,2,3-oxadiazol-3-ylium-5-olate

open access: yesActa Crystallographica Section E, 2013
In general, sydnone compounds are synthesized with an aromatic substituent at the N-3 position and this feature adds to the stability of the mesoionic five-membered heterocyclic ring.
Kenneth Turnbull   +2 more
doaj   +1 more source

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

open access: yes, 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

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