Results 51 to 60 of about 12,444 (248)

Antioxidant and antihemolytic activities of methanol extract of Hyssopus angustifolius [PDF]

open access: yes, 2012
This study was designed to evaluate antioxidant and antihemolytic activities of Hyssopus angustifolius flower, stem and leaf methanol extracts by employing various in vitro assays.
Alinezhad, H.   +6 more
core   +3 more sources

Design and Synthesis of CNS-targeted Flavones and Analogues with Neuroprotective Potential Against H2O2- and Aβ1-42-Induced Toxicity in SH-SY5Y Human Neuroblastoma Cells [PDF]

open access: yes, 2019
With the lack of available drugs able to prevent the progression of Alzheimer’s disease (AD), the discovery of new neuroprotective treatments able to rescue neurons from cell injury is presently a matter of extreme importance and urgency.
Evans, David   +8 more
core   +1 more source

4-[(4-Hydroxymethyl-2H-1,2,3-triazol-2-yl)methyl]-6-isopropyl-2H-chromen-2-one

open access: yesIUCrData, 2016
In the title compound, C16H17N3O3, the chromene ring is planar, with a maximum deviation of 0.017 (4) Å for the ring O atom. The triazole and the chromene rings, bridged by a methylene C atom, are inclined to one another by 78.3 (2)°.
Nasseem El-Khatatneh   +4 more
doaj   +1 more source

Paradoxes for chromonic liquid crystal droplets

open access: yesPhysical Review E, 2022
Chromonic liquid crystals constitute a novel lyotropic phase, whose elastic properties have so far been modeled within the classical Oseen-Frank theory, provided that the twist constant is assumed to be considerably smaller than the saddle-splay constant, in violation of one Ericksen inequality.
Silvia Paparini, Epifanio G. Virga
openaire   +6 more sources

Aloe vera in Food Preservation: Harnessing Bioactive Constituents for Clean‐Label Innovation and Safety Assurance

open access: yesFood Safety and Health, EarlyView.
Aloe vera‐derived biopolymers and nanoformulations enhance antimicrobial, antioxidant, and barrier functions in clean‐label edible coatings and films, whereas safety‐critical anthraquinone thresholds and regulatory constraints shape their translational potential.
Acharya Balkrishna   +6 more
wiley   +1 more source

Photo- and electro-induced perfluoroalkylation/cyclization of o-hydroxyaryl enaminones: Synthesis of perfluoroalkyl chromones

open access: yesGreen Synthesis and Catalysis
A practical, metal-, and additive-free strategy for photo- and electro-induced perfluoroalkylation/cyclization of o-hydroxyaryl enaminones with sodium perfluoroalkanesulfinates under mild conditions has been developed.
Shengjie Song   +5 more
doaj   +1 more source

A Novel Approach to the Synthesis of 6-Amino-7-hydroxy-flavone

open access: yesMolecules, 2004
A novel approach to the synthesis of 6-amino-7-hydroxyflavone (1) is described. Reaction in acetone of 2′,4′-dihydroxy-5′-nitroacetophenone and benzoyl chloride in the presence of potassium carbonate affords 3-benzoyl-7-hydroxy-6 ...
Tianyu Zhuang   +5 more
doaj   +1 more source

pH Controlled Release of Chromone from Chromone-Fe3O4 Nanoparticles [PDF]

open access: yesJournal of the American Chemical Society, 2008
We report a new strategy for coupling chromone to Fe3O4 nanoparticles. The chromone-Fe3O4 NP conjugate shows a dramatic increase in chromone solubility in cell culture medium from less than 2.5 to 633 microg/ml, leading to the enhanced chromone uptake by HeLa cells.
Baodui, Wang   +4 more
openaire   +2 more sources

Allergic Rhinitis and Its Impact on Asthma (ARIA)‐EAACI Guidelines—2024–2025 Revision: Part I—Guidelines on Intranasal Treatments

open access: yesAllergy, EarlyView.
ABSTRACT Background Allergic rhinitis (AR) impacts quality of life, work and school productivity. Over the last years, an important body of evidence resulting from mHealth data has led to a better understanding of AR. Such advances have motivated an EAACI‐endorsed update of the Allergic Rhinitis and its Impact on Asthma (ARIA) guidelines (ARIA 2024 ...
Bernardo Sousa‐Pinto   +252 more
wiley   +1 more source

Crystal structure of 4-(6-chloro-4-oxo-4H-chromen-3-yl)-2-methylamino-3-nitro-4H,5H-pyrano[3,2-c]chromen-5-one chloroform monosolvate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C23H14Cl4N2O7, the pyran ring has an envelope conformation with the methine C atom as the flap. The chromene rings are almost planar (r.m.s.
Rajamani Raja   +3 more
doaj   +1 more source

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