Results 1 to 10 of about 171 (133)

Syntheses, Evaluation and Characterization of Some 1, 3, 4-Oxadiazoles as Antimicrobial Agents [PDF]

open access: yesE-Journal of Chemistry, 2009
1,3,4-Oxadiazoles show various biological activities and have been synthesized from different compounds. 1,3,4-oxadiazole is popularly known for its antimicrobial, anti-inflammatory, pesticidal and antihypertensive activities etc.
Niti Bhardwaj   +3 more
doaj   +2 more sources

Synthesis and Antimicrobial Evaluation of Some New Oxadiazoles Derived from Phenylpropionohydrazides

open access: yesMolecules, 2009
In this study a series ofnew1-(2-aryl-5-phenethyl-1,3,4-oxadiazol-3(2H)-yl)ethanones 2a-e was synthesized by the cyclization of imines 1a-e using acetic anhydride. The products were evaluated for anti-bacterial and anti-fungal activity.
Gunjan Singh   +2 more
exaly   +3 more sources

SYNTHESIS OF MONO-SUBSTITUTED AND SIMMETRICALLY 2, 5-DISUBSTITUTED 1, 3, 4-OXADIAZOLES [PDF]

open access: yesChemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2012
In recent years 1,3,4-oxadiazoles have received considerable attention due to their wide range of biological activities and practical importance. They form an important class of fi ve-member heterocyclic compounds with a variety of derivatives.
Z. Ribcovskaia, F. Macaev
doaj   +2 more sources

Synthesis, spectral analysis and biological evaluation of 2-{[(morpholin-4-yl)ethyl]thio}-5-phenyl/aryl-1,3,4-oxadiazole derivatives

open access: yesPakistan Journal of Pharmaceutical Sciences, 2021
A series of new derivatives of 4-(2-chloroethyl)morpholine hydrochloride (5) were efficiently synthesized. Briefly, different aromatic organic acids (1a-f) were refluxed to acquire respective esters (2a-f) using conc. H2SO4 as catalyst.
Aziz-ur-Rehman   +11 more
doaj   +1 more source

Synthesis of Some Substituted 1,3,4-Oxadiazoles from Hydrazones [PDF]

open access: yesمجلة التربية والعلم, 2009
In this paper the synthesis of some 2-(3-pyridyl)-5-aryl-1,3,4-oxadiazoles from hydrazones is reported. Nicotinic acid was converted to ethyl nicotinate (1) by its reaction with thionyl chloride and the resultant acid chloride was treated with absolute ...
Khalid Daoud, A. Ahmad, Amal Ali
doaj   +1 more source

2D-QSAR study of synthesized novel derivatives of 1,3,4- Oxadiazoles as anti-inflammatory activity

open access: yesBLDE University Journal of Health Sciences, 2020
Oxadiazole is a five-membered heterocyclic compound containing oxygen and two nitrogen atoms at C-1, C-3 and C-4 positions respectively. These derivatives are synthesized by both conventional as well as microwave-assisted.
M Somashekhar, R B Kotnal
doaj   +1 more source

Synthesis of some substituted 1,3,4-oxadiazoles, thiadiazoles and 1,2,4-triazoles [PDF]

open access: yesمجلة التربية والعلم, 2009
In this paper the synthesis of some substituted 1,3,4-oxadiazoles, 1,3,4-thiadiazoles and 1,2,4-triazoles is reported. Ethyl methacrylate was treated with hydrazine hydrate in ethanol to give the corresponding hydrazide (1).
Shereen R. Mohamed
doaj   +1 more source

5-Aryl-1,3,4-oxadiazol-2-amines Decorated with Long Alkyl and Their Analogues: Synthesis, Acetyl- and Butyrylcholinesterase Inhibition and Docking Study

open access: yesPharmaceuticals, 2022
2,5-Disubstituted 1,3,4-oxadiazoles are privileged versatile scaffolds in medicinal chemistry that have exhibited diverse biological activities. Acetyl- (AChE) and butyrylcholinesterase (BChE) inhibitors are used, e.g., to treat dementias and myasthenia ...
Václav Pflégr   +5 more
doaj   +1 more source

Synthesis and Study of Some 4-Chlorophenoxy Methyl Substituted amido1,3,4-Oxadiazoles, 1,3,4-Thiadiazoles and 1,2,4-Triazoles from 4-Chloro phenoxy acetic acid [PDF]

open access: yesمجلة التربية والعلم, 2013
: In this paper the synthesis of some substituted 1,3,4-oxadiazole, 1,3,4-thiadiazoles and 1,2,4-triazoles is reported. 4-Chlorophenol was treated with chloroacetic acid to give 4-chlorophenoxy acetic acid (C1) which was reacted with thionyl chloride ...
Mudhar A. Othman, Khalid M. Daoud
doaj   +1 more source

Synthesis of Some 1, 3, 4- Oxadizole Derivatives from Naproxen and Acetyl Chloride [PDF]

open access: yesمجلة التربية والعلم, 2013
A seriers of 1, 3, 4-oxadiazol-2-thion were synthesized by the reaction of naproxen (or acetyl) amino acid hydrazides (glycine, valine, leucine, isoleucine and tyrosine) with carbon disulphide in alkaline medium.
Alya A. Dawood
doaj   +1 more source

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