Results 261 to 270 of about 49,489 (310)

Evaluation of the Antifungal Properties of Azomethine‐Pyrazole Derivatives from a Structural Perspective

ChemistryOpen, EarlyView.
A series of azomethine‐pyrazole derivatives bearing a para‐substituted azo‐phenyl ring is straightforwardly prepared. The new compounds display an elevated antifungal activity against various Candida species and Cryptococcus neoformans strains. DFT and molecular docking calculations are used to determine possible routes of action through interactions ...
María Isabel Murillo, Andrés Camilo Restrepo‐Acevedo, Cristian Rocha‐Roa, Susana Zacchino, Laura Svetaz, Simón Hernández‐Ortega, Rodrigo Abonia, Ronan Le Lagadec, Fernando Cuenú‐Cabezas   +8 more
wiley   +1 more source

One‐Step Aqueous Synthesis of Glycosyl Pyridinium Salts, Electrochemical Study, and Assessment of Utility as Precursors of Glycosyl Radicals Using Photoredox Catalysis

ChemistryOpen, EarlyView.
Unprotected glycosyl pyridinium salts may be accessed in a single step from the corresponding unprotected sugar in aqueous solution. Whilst meta‐ and para‐substitution is well tolerated, ortho substitution of the N‐heterocycle inhibits product formation. Electrochemical studies revealed reduction potentials in the range of −0.9 to −1.4 V.
Daniel Chong, Paula A. Brooksby, Antony J. Fairbanks   +2 more
wiley   +1 more source

Detonation Performance and Material Characterization of CL‐20 and MDNT Cocrystals Versus Physical Mixtures

Propellants, Explosives, Pyrotechnics, EarlyView.
Particle velocity comparison of CL‐20 cocrystals and physical mixtures using photon Doppler velocimetry. ABSTRACT The difficulty of developing novel energetic materials has led researchers to a process known as cocrystallization. When applied to energetic materials, the technique produces a cocrystal that is formed using two known explosives to ...
Joseph R. Lawrence, Stephen G. Hamlin, Dhruval N. Patel, Metin Örnek, Robert E. Ferguson, Steven F. Son   +5 more
wiley   +1 more source

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Triazole antifungals: A review

Drugs of Today, 2015
Invasive fungal infections and systemic mycosis, whether from nosocomial infection or immunodeficiency, have been on an upward trend for numerous years. Despite advancements in antifungal medication, treatment in certain patients can still be difficult for reasons such as impaired organ function, limited administration routes or poor safety profiles of
Mehrnoosh Hashemzadeh, Lee Peyton, S Gallagher   +2 more
openaire   +3 more sources

Phototautomerism of triazolo-triazole scaffold

Journal of Molecular Structure, 2020
It is shown that 4-methyl-7-(4-hydroxyphenyl)-[1,2,4]-triazolo[3,2-c][1,2,4]triazole exhibits a rich photoinduced protolytic behavior: Förster cycle shows that the protonated nitrogen of the triazolo-triazole ring is a weak photoacid, with ?pKa?-3; furthermore, at moderately basic pH its deprotonated monoanion exhibits a long distance water mediated ...
Capobianco A., Di Donato M., Caruso T., Centore R., Lapini A., Manfredi C., Velardo A., Volino S., Peluso A.   +8 more
openaire   +6 more sources

Silylated Tetrazoles and Triazoles

Zeitschrift für anorganische und allgemeine Chemie, 2009
Abstract1‐Dimethysilyltetrazole (1) has been prepared from 1H‐tetrazole and chlorodimethylsilane in the presence of 2,6‐lutidine, bis(1‐tetrazolyl)dimethylsilane (2) from the reaction of 1H‐tetrazole, dimethyldichlorosilane and triethylamine and 5‐(trimethylsilylamino)‐1H‐tetrazole (3) from 5‐amino‐tetrazole monohydrate and hexamethyldisilazane.
Gronde, Ingo, Mitzel, Norbert W.
openaire   +2 more sources

On Triazoles. VI. The acylation of 5‐amino‐1,2,4‐triazoles

Journal of Heterocyclic Chemistry, 1987
AbstractThe isomeric and tautomeric structure of I and II type monoacylated 5‐amino‐1,2,4‐triazole derivatives was studied with the help of their ir, uv, pmr and cmr spectra as well as model compounds prepared for this purpose. It was stated that the structure of the I type ring‐acylated derivatives is 2o and those of their II type isomers is 5a.
Péter Dvortsák, László Pongó, Jozsef Reiter   +2 more
openaire   +2 more sources

Synthesis of Triazole Nucleoside Derivatives

Nucleosides, Nucleotides & Nucleic Acids, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Zicheng Li, Ning Jiang, Shuhua Chen, Gang Cui   +3 more
openaire   +4 more sources

Synthesis and Characterization of Azido-Functionalized 1,2,3-Triazole and Fused 1,2,3-Triazole

The Journal of Organic Chemistry, 2023
Here, we report the nitration of NH on the 1,2,3-triazole ring and the synthesis of several nitrogen-rich energetic compounds based on key intermediate 4-azido-5-(chlorodinitromethyl)-2-nitro-2H-1,2,3-triazole (5). Starting from 4-amino-1H-1,2,3-triazole-5-carbonitrile (1), we successfully constructed compound 5 through four steps.
Yupeng Cao, Haifeng Huang, Limin Wang, Xiangyang Lin, Jun Yang   +4 more
openaire   +2 more sources

Mesoionic 1,2,3-Triazoles and 1,2,3-Triazole Carbenes

2014
Routine access to 1,2,3-triazoles through the copper-catalyzed azide-alkyne “click” cycloaddition reaction has promoted the rapid development of 1,2,3-triazolylidenes as ligands for transition metals. The organometallic complexes containing this kind of N-heterocyclic carbene ligands (NHCs) have shown to possess unique structural characteristics ...
Jesus M. Aizpurua, Zaira Monasterio, Maialen Sagartzazu-Aizpurua   +2 more
openaire   +2 more sources