Results 21 to 30 of about 217,573 (335)

A BODIPY-Bridged Bisphenoxyl Diradicaloid: Solvent-Dependent Diradical Character and Physical Properties

open access: yesMolecules, 2019
We report a new boron dipyrromethene (BODIPY)-bridged bisphenoxyl diradicaloid (2), which showed closed-shell diamagnetic character in less polar solvents such as dichloromethane but open-shell diradical character with paramagnetic activity in the very ...
Fang Miao, Hoa Phan, Jishan Wu
doaj   +1 more source

Discovery of nitrogenous derivatives of dihydromyricetin in cell culture medium

open access: yeseFood, 2022
Dihydromyricetin (DMY) is a health‐beneficial flavanonol in the family of flavonoids, extracted from Ampelopsis grossedentata (Hand.‐Mazz.) W. Wang. When investigating the stability of DMY in Dulbecco's modified Eagle's medium (DMEM) solution at 37°C by ...
Haolin Zhang   +6 more
doaj   +1 more source

Detection and Characterization of Catechol Quinone-Derived Protein Adducts Using Biomolecular Mass Spectrometry

open access: yesFrontiers in Chemistry, 2019
The catechol quinone (CQ) motif is present in many biologically relevant molecules throughout endogenous metabolic products, foods, drugs, and environmental pollutants. The CQ derivatives may undergo Michael addition, and has been shown to yield covalent
Shu-Hui Chen, Chun-Wei Li
doaj   +1 more source

Computational studies on electronic and optical properties of dopamine derivatives structure: A DFT study**

open access: yesJournal of the Mechanical Behavior of Materials, 2021
Dopamine is considered an important molecule that plays several essential roles in the human body, and herein lies the key to this paper on the electronic and optical properties of dopamine and its derivatives, such as quinone and L ...
Jabbar Mohammed L.
doaj   +1 more source

Microsomal superoxide anion production and NADPH-oxidation in a series of 22 aziridinylbenzoquinones [PDF]

open access: yes, 1989
Several 2,5-bis(1-aziridinyl)-1,4-benzoquinones (BABQs) can be activated to alkylating species by reduction of the quinone moiety. On the other hand, cytotoxicity of these compounds can be induced by redox cycling.
Koster, Andries Sj.   +3 more
core   +3 more sources

Exploring the Anticancer Effects of Brominated Plastoquinone Analogs with Promising Cytotoxic Activity in MCF-7 Breast Cancer Cells via Cell Cycle Arrest and Oxidative Stress Induction

open access: yesPharmaceuticals, 2022
Plastoquinone analogs are privileged structures among the known antiproliferative natural product-based compound families. Exploiting one of these analogs as a lead structure, we report the investigation of the brominated PQ analogs (BrPQ) in ...
Ayse Tarbin Jannuzzi   +9 more
doaj   +1 more source

Generation of superoxide and singlet oxygen from α-tocopherolquinone and analogues. [PDF]

open access: yes, 2007
Three potential routes to generation of reactive oxygen species from a tocopherolquinone have been identified. The quinone of the water-soluble vitamin E analogue Trolox C (Trol-Q) is reduced by hydrated electron and isopropanol a hydroxyalkyl radical ...
Bisby, RH   +4 more
core   +1 more source

A novel quinone: Quinone methide isomerase generates quinone methides in insect cuticle

open access: yesFEBS Letters, 1988
Insoluble cuticle‐bound enzyme(s) of Manduca sexta pharate pupae, which is known to convert N‐acetyldopamine to N‐acetylnorepinephrine through the intermediate formation of quinone methide, also converted exogenously supplied N‐acetyldopamine quinone to N‐acetylnorepinephrine.
Saul, Steven, Sugumaran, Manickam
openaire   +2 more sources

High-capacity aqueous zinc batteries using sustainable quinone electrodes

open access: yesScience Advances, 2018
Sustainable and ubiquitous organic quinone cathodes contribute to high-capacity and safe rechargeable zinc batteries. Quinones, which are ubiquitous in nature, can act as sustainable and green electrode materials but face dissolution in organic ...
Qing Zhao   +9 more
semanticscholar   +1 more source

Unveiling interactions between DNA and cytotoxic 2-arylpiperidinyl-1,4-naphthoquinone derivatives: A combined electrochemical and computational study [PDF]

open access: yes, 2018
Indexación: Scopus.Three 2-arylpiperidinyl-1,4-naphthoquinone derivatives were synthesized and evaluated in vitro to determine their cytotoxicity on cancer and normal cell lines.
Canales, C.   +4 more
core   +1 more source

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