Results 11 to 20 of about 97,443 (299)

Piperazine Derivatives: A Privileged Scaffold in Modern Synthesis and Medicinal Chemistry [PDF]

open access: yesChemistryOpen
Interest in piperazine scaffolds continues to rise due to their broad relevance across anti‐infective, anticancer, and neuroactive research. This review examines reports published from 2014 to 2024 and organizes current developments by therapeutic class,
Assel Ten   +5 more
doaj   +2 more sources

Piperazine-derived lipid nanoparticles deliver mRNA to immune cells in vivo

open access: yesNature Communications, 2022
In humans, lipid nanoparticles (LNPs) have safely delivered therapeutic RNA to hepatocytes after systemic administration and to antigen-presenting cells after intramuscular injection. However, systemic RNA delivery to non-hepatocytes remains challenging,
Huanzhen Ni   +10 more
semanticscholar   +1 more source

Synthetic Approaches to Piperazine-Containing Drugs Approved by FDA in the Period of 2011–2023

open access: yesMolecules, 2023
The piperazine moiety is often found in drugs or in bioactive molecules. This widespread presence is due to different possible roles depending on the position in the molecule and on the therapeutic class, but it also depends on the chemical reactivity of
M. Romanelli   +5 more
semanticscholar   +1 more source

Determination of the Primary Molecular Target of 1,2,4-Triazole-Ciprofloxacin Hybrids [PDF]

open access: yes, 2015
We have synthesized and examined the antibacterial activity, toxicity and affinity towards bacterial type II topoisomerases of a series of 1,2,4-triazole-ciprofloxacin hybrids.
Agata Paneth   +12 more
core   +2 more sources

Piperazine Hepatitis

open access: yesGastroenterology, 1976
The first reported case of piperazine toxicity resembling viral hepatitis is described in a 25-year-old woman. The illness, which was severe, occurred after administration of the drug on two separate occasions. The evidence favors a hypersensitivity mechanism rather than a direct toxic effect of piperazine or its metabolites on the liver.
A N, Hamlyn   +3 more
openaire   +2 more sources

Development of a targeted GC/MS screening method and validation of an HPLC/DAD quantification method for piperazines–amphetamines mixtures in seized material

open access: yesEgyptian Journal of Forensic Sciences, 2014
Piperazine-related drugs are sold as party pills in the form of tablets, capsules, liquids or powders. These party pills can contain several piperazine derivatives, or even a mixture of piperazines and amphetamine derivatives.
Yacine Boumrah   +5 more
doaj   +1 more source

Crystal structure and Hirshfeld surface analysis of the hydrochloride salt of 8-{4-[(6-phenylpyridin-3-yl)methyl]piperazin-1-yl}-3,4-dihydroquinolin-2(1H)-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2021
The amine 8-{4-[(6-phenylpyridin-3-yl)methyl]piperazin-1-yl}-3,4-dihydroquinolin-2(1H)-one was crystallized as the hydrochloride salt, 4-(2-oxo-1,2,3,4-tetrahydroquinolin-8-yl)-1-[(6-phenylpyridin-3-yl)methyl]piperazin-1-ium chloride, C25H27N4+·Cl− (I ...
Nisar Ullah, Helen Stoeckli-Evans
doaj   +1 more source

Synthesis, biological evaluation, and SAR study of novel pyrazole analogues as inhibitors of Mycobacterium tuberculosis: Part 2. Synthesis of rigid pyrazolones [PDF]

open access: yes, 2009
Two series of novel rigid pyrazolone derivatives were synthesized and evaluated as inhibitors of Mycobacterium tuberculosis (MTB), the causative agent of tuberculosis. Two of these compounds showed a high activity against MTB (MIC = 4 μg/mL).
Alessandro De Logu   +19 more
core   +1 more source

Piperazine based antimicrobial polymers: a review

open access: yesRSC Advances, 2021
Microbial infections are a life threatening concern in several areas, which include the biomedical sector, healthcare products, water purification systems, and food packaging.
Manohara Dhulappa Jalageri   +2 more
semanticscholar   +1 more source

Syntheses and crystal structures of 4-(4-nitrophenyl)piperazin-1-ium benzoate monohydrate and 4-(4-nitrophenyl)piperazin-1-ium 2-carboxy-4,6-dinitrophenolate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2022
Crystal structures are reported for two molecular salts containing the 4-(4-nitrophenyl)piperazin-1-ium cation. Co-crystallization from methanol/ethyl acetate solution of N-(4-nitrophenyl)piperazine with benzoic acid gives the benzoate salt, which ...
Holehundi J. Shankara Prasad   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy