Results 11 to 20 of about 1,474 (179)

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

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

Comparative Study of the Synthetic Approaches and Biological Activities of the Bioisosteres of 1,3,4-Oxadiazoles and 1,3,4-Thiadiazoles over the Past Decade [PDF]

open access: yesMolecules, 2022
The bioisosteres of 1,3,4-oxadiazoles and 1,3,4-thiadiazoles are well-known pharmacophores for many medicinally important drugs. Throughout the past 10 years, 1,3,4-oxa-/thiadiazole nuclei have been very attractive to researchers for drug design ...
Rana M. El-Masry   +3 more
doaj   +2 more sources

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

In Silico Development of Novel Benzofuran-1,3,4-Oxadiazoles as Lead Inhibitors of M. tuberculosis Polyketide Synthase 13 [PDF]

open access: yesPharmaceuticals, 2023
Benzofuran and 1,3,4-oxadiazole are privileged and versatile heterocyclic pharmacophores which display a broad spectrum of biological and pharmacological therapeutic potential against a wide variety of diseases.
Ali Irfan   +10 more
doaj   +2 more sources

One-Step Construction of 1,3,4-Oxadiazoles with Anticancer Activity from Tertiary Amines via a Sequential Copper(I)-Catalyzed Oxidative Ugi/aza-Wittig Reaction [PDF]

open access: yesMolecules
An unparalleled copper(I)-catalyzed synthesis of 1,3,4-oxadiazoles from tertiary amines in one step has been described. The one-pot reactions involving (N-isocyanimine)triphenylphosphorane, tertiary amines, and carboxylic acids resulted in the formation ...
Mei Sun   +10 more
doaj   +2 more sources

A Useful Synthesis of 2-Acylamino-1,3,4-oxadiazoles from Acylthiosemicarbazides Using Potassium Iodate and the Discovery of New Antibacterial Compounds [PDF]

open access: yesMolecules, 2019
A useful method for the synthesis of 2-acylamino-1,3,4-oxadiazoles was developed. By using potassium iodate as an oxidant in water at 60 °C, a wide range of 2-acylamino-1,3,4-oxadiazoles were afforded in moderate to excellent yields within two hours.
Tianlei Li   +4 more
doaj   +2 more sources

Synthesis and Characterization of Novel 2-Alkyl-1,3,4-Oxadiazoles Containing a Phenylazo Group [PDF]

open access: yesMolecules
An efficient method for the synthesis of novel phenylazo-containing moieties is described. The derivatives of 5-(4-(phenyldiazenyl)phenyl)-1,3,4-oxadiazole, substituted at position 2 of the heterocyclic scaffold with alkyl groups of different chain ...
Sebastian Górecki, Agnieszka Kudelko
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

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 characterization of 5-aryl-1,3,4-oxadiazole-2(3h)thione derivatives

open access: yesJournal of Applied Pharmaceutical Research, 2020
1,3,4-oxadiazoles represent a class of heterocyclic five membered compounds it contain two nitrogen and one oxygen of great importance in Pharmaceutical chemistry. This nucleus show four isomeric forms 1,2,4-oxadiazole,1,3,4-oxadiazole, 1,2,5-oxadiazole,
Shailesh Pathak   +3 more
doaj   +1 more source

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