Results 91 to 100 of about 6,701 (204)

Synthesis, crystal structure and Hirshfeld surface analysis of 2-[(4-hydroxyphenyl)amino]-5,5-diphenyl-1H-imidazol-4(5H)-one

open access: yesActa Crystallographica Section E: Crystallographic Communications
In the title molecule, C21H17N3O2, the five-membered ring is slightly ruffled and dihedral angles between the pendant six-membered rings and the central, five-membered ring vary between 50.78 (4) and 86.78 (10)°.
Abderrazzak El Moutaouakil Ala Allah   +5 more
doaj   +1 more source

Millimeter-wave spectroscopy of hydantoin, a possible precursor of glycine

open access: yes, 2017
Context. Hydantoin (Imidazolidine-2, 4-dione, C3H4N2O2) is a five-membered heterocyclic compound that is known to arise from prebiotic molecules such as glycolic acid and urea, and to give the simplest amino acid, glycine, by hydrolysis under acidic ...
Rio Miyahara   +5 more
core   +1 more source

Pulsed Fe Electro-Oxidation for Catalytic Synthesis of Hydantoin Derivatives

open access: yesInternational Journal of Electrochemical Science, 2016
This paper presents an original and practical organic electrochemical/chemical (EC/C) synthesis to prepare hydantoin derivatives from N-Alkyl-piperidin-4-ones.
S. Santiago-Ruiz   +3 more
doaj   +1 more source

Studies in the Hydantoin Series. I. 5-(4-pyridyl)hydantoin and Its Detrivatives

open access: yes, 1957
The work presented in this investigation is concerned with the chemical properties of 5-(4-pyridyl)hydantoin as compared with 5 ...
Crowe, Robert E.
core  

From enabling technologies to medicinal mechanochemistry: an eco-friendly access to hydantoin-based active pharmaceutical ingredients

open access: yes, 2019
International audienceThe preparation of hydantoin scaffolds using modern non-conventional activation methods is herein described. Special attention is devoted to the preparation of hydantoin-based Active Pharmaceutical Ingredients (APIs) by ...
Colacino, Evelina   +3 more
core   +2 more sources

Studies in the Hydantoin Series. II. 5-(3-Pyridyl)hydantoin and Its Derivatives

open access: yes, 1957
It is the purpose of this investigation to study the chemistry of 5-(3-pyridyl)hydantoin and to compare its properties with those of 5 ...
Banta, Marion Calvin
core  

THE NON-AVAILABILITY OF LYSINE FROM THE CORRESPONDING HYDANTOIN IN THE RAT

open access: yes, 1947
The hydantoin of lysine was fed to rats on a lysine-free diet and was shown to have no growth promoting effect. This hydantoin, therefore does not appear to give rise to the corresponding α-amino acid in contrast with results obtained elsewhere with ...
Roger Gaudry, R. Gingras, Edouard Page
core   +1 more source

Overexpression and characterization of hydantoin racemase from Agrobacterium tumefaciens C58 [PDF]

open access: yes, 2003
Hydantoin racemase enzyme together with a stereoselective hydantoinase and a stereospecific D-carbamoylase guarantee the total conversion from D,L-5-monosubstituted hydantoins with a low velocity of racemization to optically pure D-amino acids. In this
Clemente Jiménez, Josefa María   +4 more
core   +1 more source

Modulation of multidrug efflux pump activity by new hydantoin derivatives on colon adenocarcinoma cells without inducing apoptosis [PDF]

open access: yes, 2011
Background: Hydantoin derivatives are very promising candidates to improve the efficacy of anticancer chemotherapy. Previously, we demonstrated that eight hydantoin derivatives inhibited the P-glycoprotein (ABCB1) efflux pump of mouse T-lymphoma cells ...
Molnar, Josep   +6 more
core  

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