Results 11 to 20 of about 6,701 (204)

Facile synthesis of hydantoin/1,2,4-oxadiazoline spiro-compounds via 1,3-dipolar cycloaddition of nitrile oxides to 5-iminohydantoins [PDF]

open access: yesBeilstein Journal of Organic Chemistry
The cycloaddition of 1,3-dipoles at C=N bonds is a relatively rare process, in contrast to the widespread cycloaddition reactions at C=C, C≡C, and C=S bonds.
Juliana V. Petrova   +6 more
doaj   +2 more sources

3-Amino-5-methyl-5-(4-pyridyl)hydantoin

open access: yesActa Crystallographica Section E, 2009
The title compound, 3-amino-5-methyl-5-(4-pyridyl)imidazolidine-2,4-dione, C9H10N4O2, was obtained by reaction of 5-methyl-5-(4-pyridyl)hydantoin with hydrazine.
Alexander Roller   +3 more
doaj   +2 more sources

Sequential two-step, one-pot microwave-assisted Urech synthesis of 5-monosubstituted hydantoins from L-amino acids in water [PDF]

open access: yesBeilstein Journal of Organic Chemistry
The hydantoin scaffold is renowned for its wide-ranging biological activities, including antibacterial, antiviral, anticancer, anti-inflammatory, and anticonvulsant effects.
Wei-Jin Chang   +3 more
doaj   +2 more sources

Catalytic Plasticity of the Aspartate/Glutamate Racemase Superfamily [PDF]

open access: yes, 2009
The bacterial and archaeal Asp/Glu racemase enzyme superfamily contains a variety of catalytic functions that have great potential for use in industrial biocatalysis.
Fisch, Florian A
core   +7 more sources

Antinociceptive Effect of Hydantoin 3-Phenyl-5-(4-ethylphenyl)-imidazolidine-2,4-dione in Mice

open access: yesMolecules, 2015
Imidazolidine derivatives, or hydantoins, are synthetic compounds with different therapeutic applications. Many imidazolidine derivatives have psychopharmacological properties, such as phenytoin, famous for its anticonvulsant efficacy, but also effective
Helivaldo Diógenes da Silva Souza   +2 more
exaly   +3 more sources

The Prevalence of Contact Allergy to Formaldehyde and Formaldehyde Releasers: A Systematic Review and Meta-Analysis. [PDF]

open access: yesContact Dermatitis
ABSTRACT Formaldehyde and its releasers are common preservatives and potent sensitizers. This meta‐analysis aimed to estimate the prevalence of formaldehyde contact allergy and allergy to its five most common releasers among dermatitis patients. Two authors independently searched PubMed, Embase, and Web of Science from inception to 30th September 2025.
Karimian K   +5 more
europepmc   +2 more sources

Furagin Derivatives-Nitrofuran-Based Hydrazones as Potential Dual Inhibitors of Thioredoxin Reductase and Carbonic Anhydrases. [PDF]

open access: yesChemMedChem
Nitrofuran‐based hydrazones derived from furagin are developed as dual inhibitors of thioredoxin reductase 1 and cancer‐associated carbonic anhydrases IX and XII. The series shows selective enzyme inhibition with reduced off‐target carbonic anhydrase (CA) I/II activity, while lead compound 7g exhibits potent TrxR1 inhibition and moderate anticancer ...
Pustenko A   +6 more
europepmc   +2 more sources

Hydantoins: Synthesis, properties and anticonvulsant activity [PDF]

open access: yesHemijska Industrija, 2009
Hydantoin is a five-membered cyclic ureide that is present in numerous biologically active compounds including antiarrhytmics, anticonvulsants and antitumor agents. This paper describes different ways of synthesis of hydantoin-derivatives, their physical
Trišović Nemanja P.   +2 more
doaj   +1 more source

3′-Aminothiocyclohexanespiro-5′-hydantoin and Its Pt(II) Complex—Synthesis, Cytotoxicity and Xanthine Oxidase Inhibitory Activity

open access: yesInorganics, 2022
Herein, we report the synthesis of platinum(II) complex bearing 3′-aminothiocyclohexanespiro-5′-hydantoin as ligand. The complex was characterized by IR, NMR spectral analyses, elemental analyses and density functional theory (DFT) calculations ...
Emiliya Cherneva   +6 more
doaj   +1 more source

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

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