Results 61 to 70 of about 11,432 (179)
Design and Synthesis of New Pyrimidine-Quinolone Hybrids as Novel hLDHA Inhibitors
Pharmaceuticals, 2022 A battery of novel pyrimidine-quinolone hybrids was designed by docking scaffold replacement as lactate dehydrogenase A (hLDHA) inhibitors. Structures with different linkers between the pyrimidine and quinolone scaffolds (10-21 and 24–31) were studied in
Iván Díaz +3 more
doaj +1 more source
Synthetic Strategies for the Construction of Cyclobutane‐Fused Heterocycles
European Journal of Organic Chemistry, EarlyView.Cyclobutane‐fused heterocycles are important motifs commonly present in bioactive compounds, recognized for their rigid 3D structures that confer unique properties. However, synthesizing these compounds remains challenging. This review discusses current methods for their synthesis, such as photochemical, metal‐catalyzed, and Lewis acid‐mediated [2 + 2]
Michela Vargiu +2 more
wiley +1 more source
Survey of Tetracyclines, Sulfonamides, Sulfamethazine, and Quinolones in UHT Milk in China Market
Journal of Integrative Agriculture, 2013 This study surveyed 180 samples of ultra high temperature (UHT) milk of four top Chinese dairy brands collected in the 25 cities in China in June 2011, and assessed their contamination with antibiotics, using the ELISA method.
Rong-wei HAN +5 more
doaj +1 more source
Bactericidal activity of the new 4-quinolones DU-6859a and DV-7751a [PDF]
, 1995 The bactericidal activity of two new 4-quinolones, DU-6859a and DV-7751a, was investigated against strains of Escherichia coli, Staphylococcus aureus, S. epidermidis, Streptococcus pneumoniae and Enterococcus faecalis.
Smith, J.T., Morrissey, Ian
core
FeIII‐Mediated Synthesis of Azaspirodienones via Ipso‐Radical Cyclization of Ugi–4CR Adducts
European Journal of Organic Chemistry, EarlyView.An efficient two‐step protocol for the synthesis of azaspirodienones via Fe‐mediated ipso‐radical cyclization of Ugi adducts has been developed. This methodology provides rapid access to these privileged spirocyclic architectures under mild conditions, offering a practical and versatile approach to generating structurally complex molecules with ...
Silvia J. Becerra–Anaya +2 more
wiley +1 more source
Metal Complexes of Quinolone Antibiotics and Their Applications: An Update
Molecules, 2013 Quinolones are synthetic broad-spectrum antibiotics with good oral absorption and excellent bioavailability. Due to the chemical functions found on their nucleus (a carboxylic acid function at the 3-position, and in most cases a basic piperazinyl ring ...
Valentina Uivarosi
doaj +1 more source
Food Safety and Health, EarlyView.ABSTRACT Azithromycin has been used for clinical invasive infections caused by fluoroquinolone‐ and third‐generation cephalosporin‐resistant Salmonella, and mass drug administration with azithromycin has been used to reduce under‐5 mortality in children in some countries.
Yuhang Pei +4 more
wiley +1 more source
Nonclassical Biological Activities of Quinolone Derivatives
Journal of Pharmacy & Pharmaceutical Sciences, 2011 Quinolones are considered as a big family of multi-faceted drugs; their chemical synthesis is flexible and can be easily adapted to prepare new congeners with rationally devised structures.
Mohsen Daneshtalab, Abeer Ahmed
doaj +1 more source
Usual and unusual antibacterial effects of quinolones.
, 1990 Recently documented antibacterial effects of quinolones are reviewed. DNA gyrase is most likely to be the primary target site for these agents. Quinolones rapidly kill susceptible bacteria; the mechanisms of the bactericidal activity, still poorly ...
Pechère JC, Furet YX
core +1 more source
Clerocidin selectively modifies the gyrase-DNA gate to induce irreversible and reversible DNA damage [PDF]
, 2008 Clerocidin (CL), a microbial diterpenoid, reacts with DNA via its epoxide group and stimulates DNA cleavage by type II DNA topoisomerases. The molecular basis of CL action is poorly understood.
Fisher, LM +7 more
core +1 more source