1,2,3‐Triazole‐linked 5‐benzylidene (thio)barbiturates as novel tyrosinase inhibitors and free‐radical scavengers
Sign Up to like & getrecommendations! Published in 2020 at "Archiv der Pharmazie"
DOI: 10.1002/ardp.202000058
Abstract: In this study, benzyl‐1,2,3‐triazole‐linked 5‐benzylidene (thio)barbiturate derivatives 7a–d and 8a–h were designed as potential tyrosinase inhibitors and free‐radical scavengers. The twelve derivatives were synthesized via the [3+2] cycloaddition reaction of the corresponding benzyl azide as… read more here.
Keywords: linked benzylidene; triazole linked; tyrosinase inhibitors; free radical ... See more keywords
Functional Teas from the Leaves of Arbutus unedo: Phenolic Content, Antioxidant Activity, and Detection of Efficient Radical Scavengers
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DOI: 10.1007/s11130-017-0607-4
Abstract: The phenolic content/composition and antioxidant activity of hot/cold infusion and decoction from the leaves of Arbutus unedo were studied for the first time. 1,1-diphenyl-2-picrylhydrazyl (DPPH●), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) radical cation (ABTS●+), crocin-bleaching, copper-reducing, and liposome accelerated… read more here.
Keywords: antioxidant activity; phenolic content; radical scavengers; arbutus unedo ... See more keywords
Natural acridones and coumarins as free radical scavengers: Mechanistic and kinetic studies
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2020.137312
Abstract: Abstract In this work, we combined density functional theory (i.e., the M05-2X/6–311++G(d,p)//M05-2X/6–31+G(d) level) and statistical rate models to investigate free-radical scavenging activities of natural compounds found in Paramignya trimera root: four coumarins (i.e., paratrimerins E,… read more here.
Keywords: coumarins free; acridones coumarins; free radical; radical scavengers ... See more keywords
Surfactant and non-surfactant radical scavengers in aqueous reactions induced by pulsed corona discharge treatment
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Electrostatics"
DOI: 10.1016/j.elstat.2019.03.001
Abstract: Abstract The choice of energy input rate in treatment of aqueous media with gas-phase pulsed corona discharge (PCD) requires quantification of reactive oxygen species (ROS) reactions dependent on oxidation kinetics. The role of surfactant and… read more here.
Keywords: non surfactant; radical scavengers; corona discharge; surfactant radical ... See more keywords
Understanding of free radical scavengers used in highly durable proton exchange membranes
Sign Up to like & getrecommendations! Published in 2020 at "Progress in Natural Science: Materials International"
DOI: 10.1016/j.pnsc.2020.08.013
Abstract: Abstract Lifetime is always one of the core concerns of proton exchange membrane fuel cell, especially in commercial utilization. Membrane failure caused by chemical degradation can lead to crash of the whole fuel cell system.… read more here.
Keywords: proton exchange; free radical; radical scavengers; understanding free ... See more keywords
Response to Comment on "Activation of Persulfate by Graphitized Nanodiamonds for Removal of Organic Compounds".
Sign Up to like & getrecommendations! Published in 2017 at "Environmental science & technology"
DOI: 10.1021/acs.est.7b01642
Abstract: ■ RADICAL SPECIES Regarding the controversial issues on the mechanism of persulfate activation by carbon materials (i.e., radical versus nonradical pathways), either of the two pathways cannot be completely excluded. What matters is which pathway… read more here.
Keywords: graphitized nanodiamonds; duan; oxidation; persulfate ... See more keywords
Toluene and α-Olefins as Radical Scavengers: Direct NMR Evidence for Homolytic Chain Transfer Mechanism Leading to Benzyl and “Dormant” Titanium Allyl Complexes
Sign Up to like & getrecommendations! Published in 2018 at "Organometallics"
DOI: 10.1021/acs.organomet.8b00755
Abstract: Resting/dormant benzyl- and allyl-type Ti(IV) complexes formed under α-olefin polymerization conditions have been detected and characterized by NMR. Experimental and computational evidence supports a formation mechanism via reversible Ti–C bond homolysis rather than “classical” σ-bond… read more here.
Keywords: mechanism; toluene olefins; evidence; allyl ... See more keywords
Increasing the Durability of Polymer Electrolyte Membranes Using Organic Additives
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DOI: 10.1021/acsomega.8b01063
Abstract: Herein, we utilize organic radical scavengers to mitigate the chemical degradation of polymer membranes without sacrificing their proton conductivity. Several hydrocarbon composite membranes based on sulfonated poly(arylene ether sulfone) (SPES50, degree of sulfonation = 50%)… read more here.
Keywords: organic radical; polymer; radical scavengers; durability ... See more keywords
A SAXS-based approach to rationally evaluate radical scavengers – toward eliminating radiation damage in solution and crystallographic studies
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Synchrotron Radiation"
DOI: 10.1107/s1600577521004045
Abstract: A system engineered to produce a large-scale structural change from X-ray-induced disulfide bond cleavage allows residue-specific changes to be interpreted with SAXS. This system is used to investigate how radical scavengers reduce bond breakage during… read more here.
Keywords: approach rationally; radiation; radical scavengers; based approach ... See more keywords
Oxo-Carotenoids as Efficient Superoxide Radical Scavengers
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DOI: 10.3390/antiox11081525
Abstract: Oxo-carotenoids containing conjugated carbonyl groups in their chains were designed to be more efficient superoxide radical scavengers than natural carotenoids, β-carotene and canthaxanthin. A practical chain-extension method for polyene dials (e.g., crocetin dial) was also… read more here.
Keywords: antioxidant activity; superoxide radical; oxo carotenoids; radical scavengers ... See more keywords
Facile Detection of Light-Controlled Radical Scavengers from Natural Products Using In Situ UV-LED NMR Spectroscopy
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DOI: 10.3390/antiox11112206
Abstract: With the recent development of chemical analysis technology, attention has been placed on natural light-sensitive compounds that exhibit photoreactivity to expand the structural diversity of natural product chemistry. Photochemical reactions that proceed via a free… read more here.
Keywords: light controlled; natural products; spectroscopy; radical scavengers ... See more keywords