Results 41 to 50 of about 675,014 (180)
Synthesis, Characterization, Antioxidant Activity and Conformational Study of 4-Hydroxychalcone
Orbital: The Electronic Journal of Chemistry, 2021 The objective of this work was to develop a synthesis, characterization, and conformational study of 4-hydroxychalcone. The chalcone was obtained using Claisen-Schmidt reaction. The product was characterized by IR and NMR spectroscopy.
André Luis Kerek +2 more
doaj +3 more sources
IUCrData, 2020 In the title compound, C28H28O6, the benzene rings in the resveratrol moiety are connected by a trans C=C double bond, and the hydroxyl group containing a benzene ring and the central benzene ring are linked through a C=(O)—C=C (enone) moiety to form a ...
Miri Yoo, Dongsoo Koh
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Crystal structure of (E)-3-(2-hydroxy-4-methylphenyl)-1-(2,4,6-trimethoxyphenyl)prop-2-en-1-one
Acta Crystallographica Section E: Crystallographic Communications, 2019 The title chalcone derivative, C19H20O5, adopts a trans configuration with respect to the olefinic C=C double bond. The 2-hydroxy-4-methylphenyl ring is coplanar with the attached enone bridge [torsion angle = −179.96 (14)°], where this plane is nearly ...
Maadh Jumaah +2 more
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Bio-Evaluation of 99mTc-Labeled Homodimeric Chalcone Derivative as Amyloid-β-Targeting Probe
Frontiers in Medicine, 2022 Chalcone derivatives have been successfully utilized for a range of biological applications and can cross the blood–brain barrier easily. β-amyloid-specific bis-chalcone derivative, 6,9-bis(carboxymethyl)-14-(4-[(E)-3-(4-(dimethylamino)phenyl)acryloyl ...
Garima Mann +7 more
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Enantiopure Chiral Crystals: A Powerful Tool for Absolute Asymmetric Synthesis
Asian Journal of Organic Chemistry, EarlyView.This review covers absolute asymmetric syntheses, which allow the preparation of enantiomerically enriched chiral compounds from achiral precursors. By exploiting the crystallization of certain compounds as a conglomerate, enantiopure chiral crystals are spontaneously obtained.
Jiacheng Li, Valérie Alezra
wiley +1 more source
(E)-3-(4-Bromophenyl)-1-(3,4-dichlorophenyl)prop-2-en-1-one
Acta Crystallographica Section E, 2009 The molecule of the title compound, C15H9BrCl2O, is shown to be the E isomer, with the 3,4-dichlorobenzoyl and p-bromophenyl substituents in trans positions with respect to the chalcone olefin bond.
Rajni Kant +4 more
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Biofuels, Bioproducts and Biorefining, EarlyView.Abstract Biofuels undergo oxidative degradation, which reduces their storage stability and efficiency, hindering their large‐scale adoption and integration into the global energy matrix. To address this issue, we synthesized and characterized four novel quinolinone–chalcone derivatives (substituted with Br, Cl, OCH3 and OCH2CH3) as potential ...
Vitor S. Duarte +8 more
wiley +1 more source
In Vitro Action of Flavonoids in the Canine Malignant Histiocytic Cell Line DH82
Molecules, 2013 Cancer is commonly diagnosed in dogs over the age of 10 and is a leading cause of death due to the lack of effective drugs. Flavonoids possess antioxidant, anti-inflammatory and anticarcinogenic properties and have been studied as chemopreventive agents ...
Gabriel Silva +4 more
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Advances in Ligand‐Driven Pd‐Catalyzed C─H Functionalizations: Recent Insights and Updates
ChemCatChem, EarlyView.The most significant advances in ligand‐driven Pd‐catalyzed organic synthesis over the past two years are presented. Processes involving C─H activation of substrates, avoiding their prefunctionalization are illustrated. Both the activity and selectivity of the catalyst depend on the design of the ligands (pyridones, pyridines, amino acids, phosphines ...
Jesús Moradell +3 more
wiley +1 more source
A Way to Improve Luminescent Efficiency of Bis-Chalcone Derivatives
Journal of Chemistry, 2016 Chalcone related compounds have been reported as a poor luminescence molecule due to the quenching processes from the intramolecular torsional motions and cis-trans isomerization in the α,β-unsaturated ketone moiety.
Meng Guan Tay +4 more
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