Results 21 to 30 of about 1,978 (203)

Synthesis of series of different imidazolidine-2,4-dione derivatives and evaluation of their antimicrobial potential [PDF]

open access: yesKragujevac Journal of Science, 2022
A series of twenty two different imidazolidine-2,4-dione derivatives, divided according to their structure into five groups, including alkyl, alkenyl or aryl 5,5disubstituted hydantoins, spirohydantoins, and fused bicyclic and tricyclic hydantoins, was ...
Šmit Biljana   +5 more
doaj   +1 more source

Synthesis, structure and solvatochromism of 5-methyl-5-(3- or 4-substituted phenyl)hydantoins [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
Several 5-methyl-5-(3- or 4-substituted phenyl)hydantoins were prepared and their ultraviolet absorption spectra were recorded in the region 200–400 nm in twelve solvents of different polarity. The effect of solvent dipo¬larity/polarizability and solvent/
NATALIJA D. DIVJAK   +3 more
doaj   +3 more sources

Hydantoin and hydrogen-bonding patterns in hydantoin derivatives [PDF]

open access: yesActa Crystallographica Section C Crystal Structure Communications, 2004
The structure of hydantoin (imidazolidine-2,4-dione), C3H4N2O2, has been determined from a twinned crystal. The two carbonyl bond lengths are nearly equal, even though one of them adjoins electron-donating NH groups to either side while the other is adjacent to only one.
Yu, Fang-Lei   +2 more
openaire   +3 more sources

Chalcogen-Varied Imidazolone Derivatives as Antibiotic Resistance Breakers in Staphylococcus aureus Strains

open access: yesAntibiotics, 2023
In this study, a search for new therapeutic agents that may improve the antibacterial activity of conventional antibiotics and help to successfully overcome methicillin-resistant Staphylococcus aureus (MRSA) infections has been conducted.
Karolina Witek   +11 more
doaj   +1 more source

Thermochemical Study of 1-Methylhydantoin

open access: yesMolecules, 2022
Using static bomb combustion calorimetry, the combustion energy of 1-methylhydantoin was obtained, from which the standard molar enthalpy of formation of the crystalline phase at T = 298.15 K of the compound studied was calculated.
Juan M. Ledo   +3 more
doaj   +1 more source

Immunological Abnormalities and Hydantoins [PDF]

open access: yesBMJ, 1972
Various immunological features were measured in 20 patients with epilepsy who had received prolonged treatment with hydantoins. Immunoglobulin A (IgA) was shown to be absent or low in five patients, β 1 C/A was low in 10 patients. Five patients showed negative reactions to skin tests, and two
P J, Grob, G E, Herold
openaire   +2 more sources

5-Ethoxy-1-(4-methoxyphenyl)-5-methyl-3-phenylimidazolidine-2,4-dione

open access: yesMolbank, 2021
The title compound is a hydantoin derivative that has been synthesized through a three-component reaction of ethyl pyruvate, p-anisidine and phenyl isocyanate.
Xabier del Corte   +4 more
doaj   +1 more source

RESEARCHES ON HYDANTOINS. XXVII. SYNTHESIS OF HYDANTOIN-4-CARBOXAMIDE. [PDF]

open access: yesJournal of the American Chemical Society, 1914
n ...
Johnson, Treat B., Nicolet, Ben H.
openaire   +2 more sources

Estrutura, reatividade e propriedades biológicas de hidantoínas Structure, reactivity, and biological properties of hidantoines

open access: yesQuímica Nova, 2008
Hydantoin (imidazolidine-2,4-dione) is a 2,4-diketotetrahydroimidazole discovered by Baeyer in 1861. Thiohydantoins and derivatives were prepared, having chemical properties similar to the corresponding carbonyl compounds.
Silvânia Maria de Oliveira   +5 more
doaj   +1 more source

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