Results 31 to 40 of about 5,742 (217)

Synthesis of N-7-Substituted Purines from Imidazole Precursors

open access: yesMolecules, 1999
Synthesis of purines and purine mono-1-oxides from the respective 5-substituted 4-nitroimidazole derivatives is described. The commercially available 4-nitroimidazole, in a few simple steps (including Vicarious Nucleophilic Substitution of Hydrogen), was
Stanislaw Ostrowski
doaj   +1 more source

2-Nitro-1-vinyl-1H-imidazole

open access: yesMolbank, 2022
Nitroimidazoles are pharmacophoric groups responsible for important antiparasitic activity against several infectious diseases. 2-Nitroimidazoles are found in some antiparasitic drugs and are one of the main moieties responsible for the biological ...
Afonso Santine M. M. Velez   +5 more
doaj   +1 more source

Rapid Separation and Determination of Metronidazole Benzoate and Other Antiprotozoal Drugs by Pressurized Capillary Electrochromatography

open access: yesJournal of Chemistry, 2018
A novel method for the rapid separation and determination of five polar 5-nitroimidazoles in water from different sources by pressurized capillary electrochromatography has been developed.
Sulan Liao, Qilin Weng
doaj   +1 more source

Therapeutic Failure and Acquired Bedaquiline and Delamanid Resistance in Treatment of Drug-Resistant TB

open access: yesEmerging Infectious Diseases, 2023
New classes of antitubercular drugs, diarylquinolines and nitroimidazoles, have been associated with improved outcomes in the treatment of drug-resistant tuberculosis, but that success is threatened by emerging drug resistance.
James Millard   +3 more
doaj   +1 more source

Crystal structure of 2-{[1-(2-methyl-5-nitro-1H-imidazol-1-yl)propan-2-yloxy]carbonyl}benzoic acid

open access: yesActa Crystallographica Section E, 2014
In the title compound, C15H15N3O6, the dihedral angle between the planes of the benzene and imidazole rings is 34.93 (10)°. An intramolecular C—H...O hydrogen bond is observed.
Hafiz Abdullah Shahid   +4 more
doaj   +1 more source

Antibiotic residues in poultry‐derived foods and associated human health risks: a systematic review

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract Antibiotic residues in poultry‐derived foods remain a food‐safety concern because of their implications for regulatory compliance, antimicrobial stewardship, and consumer exposure. This review synthesized evidence published between 2016 and April 2026 on the occurrence of antibiotic residues in poultry‐derived foods, analytical approaches ...
Ana Clara Nogueira Alves   +3 more
wiley   +1 more source

Tratamiento de aguas para la eliminación de antibióticos -nitroimidazoles- mediante adsorción sobre carbón activado y tecnologías avanzadas de oxidación [PDF]

open access: yes, 2010
El objetivo general de esta Tesis Doctoral es estudiar la eliminación de antibióticos, concretamente nitroimidazoles, del agua mediante procesos de adsorción/bioadsorción en carbones activados y usando diferentes tecnologías basadas en la ozonización ...
Prados Joya, Gonzalo
core   +1 more source

Identification of proteins and cellular pathways targeted by 2-nitroimidazole hypoxic cytotoxins

open access: yesRedox Biology, 2021
Tumour hypoxia negatively impacts therapy outcomes and continues to be a major unsolved clinical problem. Nitroimidazoles are hypoxia selective compounds that become entrapped in hypoxic cells by forming drug-protein adducts.
Faisal Bin Rashed   +13 more
doaj   +1 more source

Smart mesoporous silica nanoparticles for precision cancer therapy: Tumor targeting and stimuli‐responsive controlled release

open access: yesSmart Molecules, EarlyView.
Smart mesoporous silica nanoparticles integrate tunable pore structures, molecular gates, targeting ligands, and stimuli‐responsive components to achieve controlled drug release for precision cancer therapy. This review highlights design principles, therapeutic applications, and future directions in immunotherapy, biodegradability, biosafety, and ...
Majdi Al‐Amili, Lei Lei, Zhu Jin
wiley   +1 more source

Decoding a cryptic mechanism of metronidazole resistance among globally disseminated fluoroquinolone-resistant Clostridioides difficile

open access: yesNature Communications, 2023
Severe outbreaks and deaths have been linked to the emergence and global spread of fluoroquinolone-resistant Clostridioides difficile over the past two decades. At the same time, metronidazole, a nitro-containing antibiotic, has shown decreasing clinical
Abiola O. Olaitan   +13 more
doaj   +1 more source

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