Results 11 to 20 of about 5,960 (212)

A new and efficient synthesis of substituted 2-amino-1,3,4-oxadiazoles from isothiocyanates and hydrazides [PDF]

open access: yesBMC Chemistry
1,3,4-Oxadiazoles are privileged heterocyclic scaffolds with broad bioactivities, holding significant importance in pharmaceutical and agrochemical discovery.
Lei Wu   +6 more
doaj   +2 more sources

Synthesis of 2,5-Dialkyl-1,3,4-oxadiazoles Bearing Carboxymethylamino Groups

open access: yesMolecules, 2022
A series of new symmetrical 2,5-dialkyl-1,3,4-oxadiazoles containing substituted alkyl groups at the terminal positions with substituents, such as bromine, isopropyloxycarbonylmethylamino, and carboxymethylamino, were successfully synthesized.
Marcin Łuczyński   +2 more
doaj   +2 more sources

Bioactive Oxadiazoles 2.0

open access: yesInternational Journal of Molecular Sciences, 2022
Oxadiazoles are electron-poor, five-membered aromatic heterocycles that contain one oxygen and two nitrogen atoms [...]
Antonio Palumbo Piccionello
openaire   +3 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

Functionalized Nitrile Oxides and Their Synthetic Equivalents: Recent Advances in Generation Methods and Synthetic Applications [PDF]

open access: yesMolecules
Functionalized nitrile oxides have attracted increasing attention because the incorporated functional groups not only influence cycloaddition reactivity but also provide valuable handles for subsequent molecular diversification.
Nagatoshi Nishiwaki
doaj   +2 more sources

Bioactive Oxadiazoles 3.0. [PDF]

open access: yesInt J Mol Sci
Heterocycles are fundamental moieties for the construction of new compounds with perspective applications ranging from drugs to materials [...]
Palumbo Piccionello A.
europepmc   +4 more sources

Synthesis, antimicrobial evaluation and in silico studies of the (E)-3-(aryl)-5-styryl-1,2,4-oxadiazoles

open access: yesBioscience Journal, 2022
In recent years, investigations in the field of oxadiazoles have been intensified due to their numerous therapeutic uses. Oxadiazoles are a class of compounds that exhibit several biological applications, citing antimicrobial, anti-inflammatory, anti ...
Josefa Aqueline da Cunha Lima   +6 more
doaj   +1 more source

Synthesis of 5-arylacetylenyl-1,2,4-oxadiazoles and their transformations under superelectrophilic activation conditions

open access: yesBeilstein Journal of Organic Chemistry, 2021
Acetylene derivatives of 1,2,4-oxadiazoles, i.e., 5-(2-arylethynyl)-3-aryl-1,2,4-oxadiazoles, have been obtained, for the first time reported, from 5-(2-arylethenyl)-3-aryl-1,2,4-oxadiazoles by their bromination at the carbon–carbon double bond followed ...
Andrey I. Puzanov   +6 more
doaj   +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 and Pharmacological Characterization of Metronidazole-Oxadiazole Derivatives [PDF]

open access: yesIranian Journal of Medical Sciences, 2023
Background: The use of antibiotics with or without prescription is increasing worldwide. With certain limitations, metronidazole (MTZ) is extensively used as an antibacterial and antiparasitic drug.
Mohsin Mohammed, Nadia Haj
doaj   +1 more source

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