Results 11 to 20 of about 43,102 (287)

The Role of Human Aldo-Keto Reductases (AKRs) in the Metabolic Activation and Detoxication of Polycyclic Aromatic Hydrocarbons: Interconversion of PAH-catechols and PAH o-Quinones

open access: yesFrontiers in Pharmacology, 2012
Polycyclic aromatic hydrocarbons (PAH) are ubiquitous environmental pollutants. They are procarcinogens requiring metabolic activation to elicit their deleterious effects.
Li eZhang   +3 more
doaj   +2 more sources

Kinetic Study of the Oxidation of Catechols in the Presence of N-Methylaniline

open access: yesJournal of Chemistry, 2013
The reactions of electrochemically generated o-quinones from oxidation of catechol and 4-methylcatechol as Michael acceptors with N-methylaniline as nucleophile have been studied using cyclic voltammetry.
Lida Khalafi   +3 more
doaj   +2 more sources

Oxidation of Catechols at the Air–Water Interface by Nitrate Radicals

open access: yesEnvironmental Science and Technology, 2022
Abundant substituted catechols are emitted to, and created in, the atmosphere during wildfires and anthropogenic combustion and agro-industrial processes.
Md. Sohel Rana, M. Guzman
semanticscholar   +1 more source

Antimicrobial Property of Halogenated Catechols.

open access: yesChemical Engineering Journal, 2021
Bacterial infection associated with multidrug resistance (MDR) bacteria is increasingly becoming a significant public health risk. Herein, we synthesized a series of halogenated dopamine methacrylamide (DMA), which contains a catechol side chain modified
Bo Liu   +4 more
semanticscholar   +1 more source

Chemical Reactivities of ortho-Quinones Produced in Living Organisms: Fate of Quinonoid Products Formed by Tyrosinase and Phenoloxidase Action on Phenols and Catechols

open access: yesInternational Journal of Molecular Sciences, 2020
Tyrosinase catalyzes the oxidation of phenols and catechols (o-diphenols) to o-quinones. The reactivities of o-quinones thus generated are responsible for oxidative browning of plant products, sclerotization of insect cuticle, defense reaction in ...
S. Ito, M. Sugumaran, K. Wakamatsu
semanticscholar   +1 more source

From Surfactants to Viscoelastic Capsules

open access: yesAdvanced Materials Interfaces, 2023
Micrometer sized capsules are often used as single entities for the encapsulation and release of active ingredients, for example in food, cosmetics, and drug delivery.
Gaia De Angelis   +3 more
doaj   +1 more source

Fully biological production of adipic acid analogs from branched catechols

open access: yesScientific Reports, 2020
Microbial production of adipic acid from lignin-derived monomers, such as catechol, is a greener alternative to the petrochemical-based process. Here, we produced adipic acid from catechol using catechol 1,2-dioxygenase (CatA) and a muconic acid ...
Nicholas S. Kruyer   +3 more
semanticscholar   +1 more source

Advances in 4-Hydroxyphenylacetate-3-hydroxylase Monooxygenase

open access: yesMolecules, 2023
Catechols have important applications in the pharmaceutical, food, cosmetic, and functional material industries. 4-hydroxyphenylacetate-3-hydroxylase (4HPA3H), a two-component enzyme system comprising HpaB (monooxygenase) and HpaC (FAD oxidoreductase ...
Kai Yang   +7 more
doaj   +1 more source

Copper-assisted oxidation of catechols into quinone derivatives

open access: yesChemical Science, 2020
Catechols are ubiquitous substances often acting as antioxidants, thus of importance in a variety of biological processes. The Fenton and Haber–Weiss processes are thought to transform these molecules into aggressive reactive oxygen species (ROS), a ...
A. Gómez-Herrero   +13 more
semanticscholar   +1 more source

Imine-Based Catechols and o-Benzoquinones: Synthesis, Structure, and Features of Redox Behavior

open access: yesACS Omega, 2020
Novel sterically hindered catechols of the type 3-(RN=CH)-4,6-DBCatH2 with iminoalkyl or iminoaryl groups in the third position of the aromatic ring have been synthesized and characterized in detail.
Tatiana V. Astaf’eva   +5 more
semanticscholar   +1 more source

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