Results 11 to 20 of about 37,093 (255)

Synthesis and antioxidant activity of 1,3,4-oxadiazoles and their diacylhydrazine precursors derived from phenolic acids [PDF]

open access: yes, 2017
Eight 1,3,4-oxadiazole derivatives containing phenolic acid moieties (7a-h) and eight of their diacylhydrazine precursors (6a-h) were synthesized, characterized using spectroscopic methods and examined by scavenging of stable DPPH (2,2-diphenyl-1 ...
Joksović, Ljubinka   +6 more
core   +5 more sources

Difluoromethyl-1,3,4-oxadiazoles Are Selective, Mechanism-Based, and Essentially Irreversible Inhibitors of Histone Deacetylase 6. [PDF]

open access: yesJ Med Chem, 2023
Histone deacetylase 6 (HDAC6) is an important drug target in oncological and non-oncological diseases. Most available HDAC6 inhibitors (HDAC6i) utilize hydroxamic acids as a zinc-binding group, which limits therapeutic opportunities due to its genotoxic ...
König B   +6 more
europepmc   +2 more sources

Batch Versus Flow Lithiation-Substitution of 1,3,4-Oxadiazoles: Exploitation of Unstable Intermediates Using Flow Chemistry [PDF]

open access: yesChemistry, 2019
1,3,4‐Oxadiazoles are a common motif in pharmaceutical chemistry, but few convenient methods for their modification exist. A fast, convenient, high yielding and general α‐substitution of 1,3,4‐oxadiazoles has been developed using a metalation ...
Barker, Graeme   +3 more
core   +2 more sources

Synthesis and evaluation of some new 1,3,4-oxadiazoles bearing thiophene, thiazole, coumarin, pyridine and pyridazine derivatives as antiviral agents [PDF]

open access: yesActa Pharmaceutica, 2019
In an attempt to produce heterocyclic compounds based on 1,3,4-oxadiazole derivatives with potential antiviral activity, the synthesis of compound 1 [2-(5-thioxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)acetonitrile] was performed through the reaction of ...
HASSAN AHMED ALHAZMI   +2 more
core   +3 more sources

Molecular Structure, Matrix-Isolation IR Spectrum and UV-Induced Transformations of 2-Amino-5-(4-Methoxyphenyl)-1,3,4-Oxadiazole [PDF]

open access: yesMolecules
The photochemistry of 1,3,4-oxadiazoles remains poorly understood, despite their recognized importance in medicinal chemistry and materials science. In this work, we report a detailed matrix-isolation study of 2-amino-5-(4-methoxyphenyl)-1,3,4-oxadiazole,
İsa Sıdır   +3 more
doaj   +2 more sources

Antimicrobial Activity of 1,3,4-Oxadiazole Derivatives [PDF]

open access: yesInternational Journal of Molecular Sciences, 2021
The worldwide development of antimicrobial resistance forces scientists to search for new compounds to which microbes would be sensitive. Many new structures contain the 1,3,4-oxadiazole ring, which have shown various antimicrobial activity, e.g., antibacterial, antitubercular, antifungal, antiprotozoal and antiviral. In many publications, the activity
Teresa Glomb, Piotr Świątek
openaire   +2 more sources

Synthesis and Biological Activity of 1,3,4-Oxadiazoles Used in Medicine and Agriculture

open access: yesApplied Sciences, 2022
Biologically active compounds play a key role in the fight against diseases affecting both human and animal living organisms, as well as plants. Finding out about new molecules with a potential biological effect, not yet described in the literature, is ...
Marcin Luczynski, A. Kudelko
semanticscholar   +1 more source

Biologically oriented synthesis of medicines (BIODS) based on heterylpoxid 2,5-disubstituted 1,3,4-oxadiazoles (Part 2)

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2021
Heterocyclic compounds make a very important branch of organic chemistry, and it has always been an interesting area of study in medical chemistry. They are present in a variety of drugs, vitamins and biologically active compounds. Over two decades, 1,
Yu. V. Karpenko   +2 more
doaj   +1 more source

Synthesis of 2-Isobutyl, 2-Isobutyl-5-aryl and 2-Isobutyl-5-thiol-1,3,4-Oxadiazoles [PDF]

open access: yesمجلة التربية والعلم, 2007
In this paper the synthesis of some substituted 1,3,4-oxadiazoles from isobutyric acid was studied. The isobutyric acid was converted into the corresponding ethyl ester, which then treated with hydrazine hydrate in ethanol to give the acid hydrazide. The
Hadil S. Aziz, Khalid M. Daoud
doaj   +1 more source

Microwave-Assisted Synthesis of Unsymmetrical 5-Phenyl-1,3,4-oxadiazoles Containing Bis(carboxymethyl)amino Group

open access: yesApplied Sciences, 2023
New derivatives of 5-phenyl-1,3,4-oxadiazole substituted at position 2 with (bromomethyl)phenyl or bromoalkyl groups were obtained via microwave-assisted cyclodehydration of unsymmetrical N,N′-diacylhydrazines.
Marcin Łuczyński, Agnieszka Kudelko
doaj   +1 more source

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