Urea Derivatives

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Biphenyl urea derivatives as selective CYP1B1 inhibitors.

Highly selective CYP1B1 inhibitors have potential in the treatment of hormone-induced breast and prostate cancers. Mimicry of potent and selective CYP1B1 inhibitors, α-naphthoflavone and stilbenes, revealed that two sets of hydrophobic clusters suitably linked via a polar linker could be implanted into a new scaffold 'biphenyl ureas' to create potentially a new class of CYP1B1 inhibitors. A ser...

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Hydrotropic Solubilization by Urea Derivatives: A Molecular Dynamics Simulation Study.

Hydrotropy is a phenomenon where the presence of a large quantity of one solute enhances the solubility of another solute. The mechanism of this phenomenon remains a topic of debate. This study employed molecular dynamics simulation to investigate the hydrotropic mechanism of a series of urea derivatives, that is, urea (UR), methylurea (MU), ethylurea (EU), and butylurea (BU). A poorly water-so...

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Novel Trifluoromethylcoumarinyl Urea Derivatives: Synthesis, Characterization, Fluorescence, and Bioactivity.

A series of novel trifluoromethylcoumarinyl urea derivatives were designed, synthesized, and characterized by ¹H-NMR, 13C-NMR, and HR-ESI-MS. The fluorescence spectra of the target compounds were recorded. The spectra show that most of the title compounds glow green with λmaxem of 500-517 nm, while compounds 5r, 5s, 5u, and 5l (compounds named by authors) glow violet with λmaxem of 381-443 nm. ...

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Urea derivatives enhance the photocatalytic activity of dye-modified titanium dioxide.

Trace amounts of urea derivatives enhance the rate of nitrobenzene N3-sensitized TiO(2) photoreduction by catalyzing the proton transfer. The usually required addition of transition metal co-catalysts becomes dispensable for this visible light photocatalysis, facilitating its application in organic synthesis.

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ژورنال

عنوان ژورنال: Canadian Journal of Chemistry

سال: 1952

ISSN: 0008-4042,1480-3291

DOI: 10.1139/v52-032