Results 31 to 40 of about 769 (187)

Thiohydantoins from vanillin and its derivatives - Synthesis and Characterization [PDF]

open access: yes, 2019
Hydantoins and their sulfur containing analogues, thiohydantoins, are an important and interesting moiety. They represent a big group of structurally diverse compounds with intriguing physical, chemical and biological properties, which enabled them to be
Jovana Muskinja   +9 more
core   +1 more source

An efficient synthesis of imidazo[2,1-b][1,3]thiazins via a one-pot, three-component and solvent-free reaction

open access: yesGreen Chemistry Letters and Reviews, 2016
A simple and eco-friendly method for the synthesis of novel imidazo[2,1-b][1,3]thiazin derivatives has been developed via the one-pot, three-component and solvent-free reaction of thiohydantoins, aromatic aldehyde and 5,5-dimethylcyclohexane-1,3-dione in
Mohammad Mehdi Ghanbari
doaj   +1 more source

Advances in Chemistry of Isothiocyanate-derived Colourants

open access: yesCzech Journal of Food Sciences, 2009
This study is focused on the reactions of isothiocyanates (ITCs) in the presence of amino compounds leading to coloured structures via substituted 2-thiohydantoins.
K. Cejpek, J. Velíšek
doaj   +1 more source

A New Polymorph of 2-Thiohydantoin

open access: yesX-ray Structure Analysis Online, 2009
A new polymorphic crystal of the title compound, C3H4N2OS, belongs to space group P1 with cell dimensions of a = 4.0520(9)A, b = 6.550(1)A, c = 9.170(2)A, α = 100.148(4)°, β = 100.814(4)°, γ = 96.831(4)°, R1 = 0.069. Neighboring molecules are connected to form cyclic dimers via two types of hydrogen bonds, one between the thioamide groups and the other
Ogawa, Toshikazu   +7 more
openaire   +2 more sources

Synthesis and Characterization of Various Amino Acid Derived Thiohydantoins [PDF]

open access: yes, 2018
Hydantoins and their sulfur containing analogues, thiohydantoins, are cyclic ureides that have attracted huge attention ever since their discovery. Most of them are biologically active compounds and several points of structural diversity have made them ...
Živković, Marija   +5 more
core   +1 more source

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

Infra-red Spectra of Substituted 2-Thiohydantoins

open access: yes, 1971
Infra-red spectra of 2-thiohydantion 3-N-phenyl-, 3-N-o-tolyl-, 3-N-p-tolyl-2-thiohydantoins, in KBr matrix and in dioxane, and of 3-methyl- and 3-ethyl-2-thiohydantoins in KBr matrix and methylenechloriclo medium were recouded.
P. V. Kamat   +2 more
core   +1 more source

Lepidium meyenii biological activity and future perspectives [PDF]

open access: yesMakedonsko Farmacevtski Bilten
Lepidium meyenii Walp. (Brassicaceae) is a plant native to the Andean region. It is also known as Maca and Peruvian ginseng and is considered to have been used in traditional medicine for more than 2000 years.
Zoya Dzhakova   +2 more
doaj   +1 more source

A FLUORIMETRIC ASSAY FOR MINUTE AMOUNTS OF SOME THIOHYDANTOINS

open access: yes, 1958
A fluorimetric assay sensitive to μg. quantities of certain thiohydantoins has been devised using dichloroquinone chloroimide as a fluorescence reagent. The nature of the buffer used is critical.
Eleanor Angell, M E Auerbach
core   +1 more source

Acrylamide Exposure, Biological Aging Acceleration, With Ankle‐Brachial Index and Peripheral Artery Disease: Exploring Association, Interaction, and Underlying Mechanism

open access: yesFood Frontiers, Volume 7, Issue 4, July 2026.
We provided the first evidence that exposure of general adults to ACR was related to ABI decrement and PAD odds increment, which might be partly associated with accelerated biological aging. Lipid and atherosclerosis pathway may be suggestively implicated in the mechanism underlying these associations.
Feifei Wang   +11 more
wiley   +1 more source

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