Microsomal superoxide anion production and NADPH-oxidation in a series of 22 aziridinylbenzoquinones [PDF]
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
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Benzoquinones from scent glands of phalangiid harvestmen (Arachnida, Opiliones, Eupnoi): a lesson from [PDF]
Günther Raspotnig +4 more
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Synthesis and cytotoxic activity of geranylmethoxyhydroquinone derivatives [PDF]
Indexación: Web of Science; ScieloEl geranilo-2 ,4-sintético nuevo methoxyhydroquinone 1 y el conocido geranilo-4 ,5 methoxyhydroquinone- 2 se prepararon por sustitución electrófila aromática (EAS) reacciones entre geraniol y 1,3,5-trimethoxyphenol ...
Baeza Maturana, Evelyn +5 more
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ZZE-Configuration of chromophore ß-153 in C-phycocyanin from Mastigocladus laminosus [PDF]
The photochemistry of C-phycocyanin has been studied after denaturation in the dark. It shows an irreversible reaction which has characteristics of a Ζ,Ζ,Ε- to Z,Z,Z-isomerization of dihydrobilins. Its amplitude depends on the reaction conditions, with
Bode, W. +7 more
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By the possession of unique exocrine scent glands, Opiliones (harvestmen) arise as a perfect model for studies on the evolutionary history of secretion chemistry.
Günther Raspotnig +5 more
doaj +1 more source
Biomarkers of leukemia risk: benzene as a model. [PDF]
Although relatively rare, leukemias place a considerable financial burden on society and cause psychologic trauma to many families. Leukemia is the most common cancer in children.
Smith, MT, Zhang, L
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Reactivity measurement in estimation of benzoquinone and benzoquinone derivatives’ allergenicity [PDF]
Benzoquinone (BQ) and benzoquinone derivatives (BQD) are used in the production of dyes and cosmetics. While BQ, an extreme skin sensitizer, is an electrophile known to covalently modify proteins via Michael Addition (MA) reaction whilst halogen substituted BQD undergo nucleophilic vinylic substitution (SNV) mechanism onto amine and thiol moieties on ...
Wilbes Mbiya +3 more
openaire +3 more sources
Reductive activation of potential antitumor bis(aziridinyl)benzoquinones by xanthine oxidase: Competition between oxygen reduction and quinone reduction [PDF]
The reduction of a series of 2,5-bis(1-aziridinyl)-1,4-benzoquinone (BABQ) derivatives with various 3,6 substituents by the enzyme xanthine oxidase has been studied.
Janssen, L.H.M. +5 more
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Biosynthesis of food constituents: Natural pigments: Part 1
This review article gives a survey of the generally accepted biosynthetic pathways that lead to the most important natural pigments in organisms closely related to foods and feeds.
Jan Velíšek +2 more
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Targeting the substrate preference of a type I nitroreductase to develop antitrypanosomal quinone-based prodrugs. [PDF]
Nitroheterocyclic prodrugs are used to treat infections caused by Trypanosoma cruzi and Trypanosoma brucei. A key component in selectivity involves a specific activation step mediated by a protein homologous with type I nitroreductases, enzymes found ...
Alsford +68 more
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