Results 41 to 50 of about 2,991 (181)

Development of Predictive Antioxidant Models for 1,3,4-Oxadiazoles by Quantitative Structure Activity Relationship

Journal of the Turkish Chemical Society, Section A: Chemistry, 2019
The free radical scavenging properties of 1,3,4-oxadiazoles have been explored by the application of quantitative structure activity relationship (QSAR) studies.
Ikechukwu Alisi, Adamu Uzairu, Stephen Eyije Abechi, Suleiman Ola Idris   +3 more
doaj   +1 more source

1, 3, 4-Oxadiazoles : Part III. Mannich Bases Derived from 5-(o-) Hydroxyphenyl-1, 3, 4-Oxadiazol-2-thione

, 1974
Department Of Chemistry, S. C. College, Ballia Manuscript received 17 September 1973; revised 28 March 1974; accepted 4 April 1974 A number of 3-substituted aminomethy1-5-(o-)hydroxyphenyl-1, 3, 4-oxadiazol-2-thiones have been prepared by the application of Mannich reaction.
VISHNU JI RAM, H. N. PANDEY
openaire   +2 more sources

Sulfonamide‐Based 2‐Amino‐1,3,4‐Oxadiazole Derivatives as Dual Cholinesterase and Carbonic Anhydrase Inhibitors: Design, Synthesis, Kinetic Characterization, Molecular Modeling, and ADMET Evaluation

Drug Development Research, Volume 87, Issue 6, September 2026.
ABSTRACT In this study, 12 novel sulfonamide derivatives incorporating 2‐amino‐1,3,4‐oxadiazole and 1,3‐benzazol‐2(3H)‐one scaffolds were synthesized and structurally characterized using 1H NMR, 13C NMR, and LC–MS analyses. Their inhibitory activities were evaluated against acetylcholinesterase (AChE), butyrylcholinesterase (BChE), carbonic anhydrase I
Gülnur Arslan Karahan, Başak Gökçe, Muhammed Tilahun Muhammed, Emre Kadir Ayan, Azime Berna Özçelik   +4 more
wiley   +1 more source

Design, Synthesis and Bioactivity Evaluation of Novel 2-(pyrazol-4-yl)-1,3,4-oxadiazoles Containing an Imidazole Fragment as Antibacterial Agents

Molecules, 2023
Imidazole alkaloids, a common class of five-membered aromatic heterocyclic compounds, exist widely in plants, animals and marine organisms. Because of imidazole’s extensive and excellent biological and pharmacological activities, it has always been a ...
Hongwu Liu, Shan Yang, Ting Li, Siyue Ma, Peiyi Wang, Guoqing Wang, Shanshan Su, Yue Ding, Linli Yang, Xiang Zhou, Song Yang   +10 more
doaj   +1 more source

Quinoline and Phthalimide Substituted Silicon Phthalocyanines as Multi‐Target Inhibitors of Cholinesterases and Carbonic Anhydrases

Journal of Biochemical and Molecular Toxicology, Volume 40, Issue 9, September 2026.
Two novel axially substituted silicon phthalocyanines were synthesized and characterized. Compound 2a exhibited significantly enhanced inhibition of AChE, BChE, hCA I and hCA II, supported by molecular docking and SAR analysis, highlighting its potential as a multifunctional enzyme inhibitor with promising biological activity.
Seda Ünlü, Zeynep Köksal, Kevser Kübra Kırboğa, Fikriye Tuncel Elmalı   +3 more
wiley   +1 more source

Review Article: The Impact of the Gut Microbiome on Ulcerative Colitis Pharmacotherapy

Alimentary Pharmacology &Therapeutics, Volume 64, Issue 6, Page 729-747, September 2026.
The gut microbiome modulates ulcerative colitis pharmacotherapy through microbial drug metabolism, immune regulation and altered drug bioavailability. Microbial composition influences response to aminosalicylates, corticosteroids, immunomodulators, biologics and small molecules, while microbiome‐targeted therapies show emerging promise.
Kate Collins, Srinivas Kamath, Rachel H. Davis, Samuel P. Costello, Robert V. Bryant, Alice S. Day, Paul Joyce   +6 more
wiley   +1 more source

Microwave Irradiation Promoted Reactions of Orthoesters with Carboxylic Acid Hydrazides. Preparation of 1,3,4-Oxadiazoles [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1997
Rapid and highly efficient synthesis of 2- or 2,5-substituted 1,3,4-oxadiazoles by the condensation of aryl carboxylic acid hydrazides and orthoesters can be achieved under microwave irradiation using an unmodified commercial over in unsealed vessels.
Mohammad Sadegh Khajavi, Seyed Saheb Sadat Hosseini, Fatemeh Sefidkon   +2 more
doaj  

A Handy and Solventless Direct Route to Primary 3-[3-Aryl)-1,2,4-oxadiazol-5-yl]propionamides Using Microwave Irradiation

Molecules, 2006
A one-step, simple and straightforward synthesis of the title amides from the corresponding carboxylic acids, urea and imidazole under microwave irradiation is described.
Rajendra M. Srivastava, Ricardo A.W. Neves   +1 more
doaj   +1 more source

Ligand‑Based Virtual Screening Discovery of Thienopyrimidinone Derivatives as Allosteric nSMase2 Modulators and Antivirals Against West Nile Virus

ChemMedChem, Volume 21, Issue 16, 27 August 2026.
Ligand‐based virtual screening of over five million compounds identifies a thienopyrimidinone hit as a novel allosteric nSMase2 modulator. Structure‐guided optimisation improves inhibitory potency and delivers derivatives with antiviral activity against West Nile virus, expanding the chemical space of nSMase2 inhibitors and supporting host‐directed ...
Hadrián Álvarez‐Fernández, Patricia Mingo‐Casas, Ana‐Belén Blázquez, Flavia Caridi, Miguel A. Martín‐Acebes, María‐Jesús Pérez‐Pérez, Eva‐María Priego   +6 more
wiley   +1 more source

Recent Advances in Fluorescent Probes for Imaging Enzyme Activity in NETosis

ChemBioChem, Volume 27, Issue 15, 14 August 2026.
Fluorescent probes enable real‐time visualization of neutrophil effector functions. This review summarizes current probe design strategies and emerging tools for imaging key enzymatic activities, with emphasis on mechanisms underlying NETosis, a lytic form of neutrophil extracellular trap (NET) formation. We discuss current limitations, challenges, and
Enebie Ramos Cáceres, Marijn J. Hollander, Kimberly M. Bonger   +2 more
wiley   +1 more source