Results 11 to 20 of about 16,770 (249)

Synthetic Strategies to Terpene Quinones/Hydroquinones

open access: yesMarine Drugs, 2012
The cytotoxic and antiproliferative properties of many natural sesquiterpene-quinones and -hydroquinones from sponges offer promising opportunities for the development of new drugs.
Marina Gordaliza
doaj   +2 more sources

CF3-Bis-TEMPO-Vis: New Visible Light Active Bis-Benzimidazolequinone Alkoxyamine

open access: yesMolbank, 2021
Alkoxyamines of TEMPO usually dissociate thermally at >100 °C; however, room temperature homolysis, activated by visible light, occurs with benzimidazolequinone derivatives.
Patrick Kielty   +3 more
doaj   +1 more source

Quinone Reductase 2 Is a Catechol Quinone Reductase [PDF]

open access: yesJournal of Biological Chemistry, 2008
The functions of quinone reductase 2 have eluded researchers for decades even though a genetic polymorphism is associated with various neurological disorders. Employing enzymatic studies using adrenochrome as a substrate, we show that quinone reductase 2 is specific for the reduction of adrenochrome, whereas quinone reductase 1 shows no activity.
Yue, Fu   +2 more
openaire   +2 more sources

An ultrasensitive and highly selective determination method for quinones by high-performance liquid chromatography with photochemically initiated luminol chemiluminescence. [PDF]

open access: yes, 2009
Quinones are a class of compounds of substantial toxicological and pharmacological interest. An ultrasensitive and highly selective chemiluminescence (CL) method was newly developed for the determination of quinones based on the utility of ...
Ahmed, Sameh   +13 more
core   +1 more source

Protein Adducts and Protein Oxidation as Molecular Mechanisms of Flavonoid Bioactivity

open access: yesMolecules, 2021
There are tens of thousands of scientific papers about flavonoids and their impacts on human health. However, despite the vast amount of energy that has been put toward studying these compounds, a unified molecular mechanism that explains their ...
P. Matthew Joyner
doaj   +1 more source

Production and Selectivity of Key Fusarubins from Fusarium solani due to Media Composition

open access: yesToxins, 2021
Natural products display a large structural variation and different uses within a broad spectrum of industries. In this study, we investigate the influence of carbohydrates and nitrogen sources on the production and selectivity of production of four ...
Sebastian Birkedal Kristensen   +5 more
doaj   +1 more source

Quinones for Aqueous Organic Redox Flow Battery: A Prospective on Redox Potential, Solubility, and Stability

open access: yesAdvanced Materials Interfaces, 2023
In recent years, there has been considerable interest in the potential of quinones as a promising category of electroactive species for use in aqueous organic redox flow batteries.
Fuead Hasan   +2 more
doaj   +1 more source

1,4- Addition of diazomethane to a heterodiene: a direct preparation of the oxazolic ring

open access: yesAnais da Academia Brasileira de Ciências, 2007
The reaction of naphthoquinone-oximes (3) and (4) with diazomethane yields directly, in one step, the oxazoles (5) and (6), respectively.A reação das naphthoquinona-oximas (3) e (4) com diazometano fornece diretamente, em uma etapa, os oxazóis (5) e (6),
Flávio da S. Emery   +9 more
doaj   +1 more source

Mini Review of Phytochemicals and Plant Taxa with Activity as Microbial Biofilm and Quorum Sensing Inhibitors

open access: yesMolecules, 2015
Microbial biofilms readily form on many surfaces in nature including plant surfaces. In order to coordinate the formation of these biofilms, microorganisms use a cell-to-cell communication system called quorum sensing (QS).
Chieu Anh Kim Ta, John Thor Arnason
doaj   +1 more source

Electrochemical and Molecular Assessment of Quinones as CO2-Binding Redox Molecules for Carbon Capture

open access: yes, 2021
The complexation and decomplexation of CO2 with a series of quinones of different basicity during electrochemical cycling in dimethylformamide solutions were studied systematically by cyclic voltammetry.
Howard J. , Herzog   +5 more
core   +1 more source

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