Results 51 to 60 of about 7,497 (214)

Natural and Synthetic Naphthoquinones as Potential Anti-Infective Agents

, 2021
Background: Naphthoquinones are a class of aromatic compounds relevant for their chemical characteristics, structural properties, and biological activity. These compounds are found in nature with a wide range of effects, highlighting their antibacterial,
Trofymchuk, Oleksandra S., Salas Sánchez, Cristián Osvaldo, Perales Flores, Juanita D., Hernandez Soberanis, Lucio, Vazquez, Karina, Ortiz Perez, Eyra, Zarate Ramos, Juan J., Rivera, Gildardo   +7 more
core   +1 more source

Natural Anthraquinone‐Like Compound Extracted from Green Husk of Walnut Improves Photocatalytic H2O2 Production Catalyzed by TiO2 Nanoparticles

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In this work, a novel biomolecule/semiconductor hybrid catalyst was prepared by loading anthraquinone‐liked juglone onto anatase TiO2. This catalyst exhibited high photocatalytic activity for H2O2 production. Hydrogen peroxide (H2O2) is a vital oxidant with broad industrial applications, and its production via photocatalysis represents a highly ...
Zengyin He, Cui Li, Mingze Ni, Shu Lin, Kezhen Qi   +4 more
wiley   +1 more source

Water, Alcohols, Amines, and Amides as Formal Hydrogen‐Atom‐Transfer Reagents Through Activation With Redox‐Active Lewis Acids

Angewandte Chemie, Volume 138, Issue 39, 21 September 2026.
Protic molecules containing strong O─H or N─H bonds typically resist hydrogen‐atom abstraction because of the high reactivity of the resulting heteroatom‐centered radicals. However, association of the protic molecules with redox‐active Lewis acids can provide powerful hydrogen‐atom donors or proton‐coupled‐electron‐transfer reagents.
Petra Vojáčková, Armido Studer
wiley   +2 more sources

A High‐Performance Oxidized Graphene for Dendrite‐Free Anodes and Kinetically Enhanced Cathodes of Aqueous Zn‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Oxidized graphene rich in carboxylic acid groups obtained via a simple electrochemical exfoliation route is shown to tackle the main challenges of aqueous Zn‐ion batteries (AZIBs), specifically short Zn anode cycle life and sluggish cathode reaction kinetics.
Enrique Álvarez‐Rubiera, José M. Munuera, Julen Beitia, Cian Gabbett, Alba Suárez‐Fernández, Eider Goikolea, Jonathan N. Coleman, Idoia Ruiz de Larramendi, Silvia Villar‐Rodil, Juan I. Paredes   +9 more
wiley   +1 more source

Synthesis of Naphthoquinones by Pd‐Catalyzed Heck–Matsuda Arylation of Lapachol

European Journal of Organic Chemistry, EarlyView.
Direct Heck–Matsuda arylation of lapachol enables the efficient synthesis of diverse naphthoquinones under homogeneous and heterogeneous palladium catalysis. The methodology features broad substrate scope, gram‐scale applicability, and provides a practical platform for quinone diversification.
Breno U. de Abreu, Renata G. Almeida, Ana L. C. Silveira, Leonardo A. Matos, Willian X. C. Oliveira, Maria H. Araujo, Victor F. S. Ramos, Rubem F. S. Menna‐Barreto, Chandrakant B. Nichinde, Felipe Fantuzzi, Edmond Gravel, Eric Doris, Eufrânio N. da Silva Júnior, Guilherme A. M. Jardim   +13 more
wiley   +1 more source

Air Pollution Quinones Impair Intestinal Barrier Integrity and Endoplasmic Reticulum in Differentiated Caco‐2 Cells

Journal of Applied Toxicology, EarlyView.
ABSTRACT Particulate matter (PM) is a major global health threat, linked to millions of deaths annually. Beyond inhalation, PM components reach the gastrointestinal tract through the mucociliary escalator or contaminated food and water. Among PM's organic fraction, redox‐active quinones such as 1,2‐naphthoquinone (NQ) and 9,10‐phenanthrenequinone (PQ ...
Franco Cervellati, Giulia Trinchera, Alice Casoni, Alessandra Pecorelli, Mascia Benedusi, Maria Chiara Pietrogrande, Giuseppe Valacchi   +6 more
wiley   +1 more source

Electrochemical Regioselective C(sp²)–H Selenylation and Sulfenylation of Substituted 2‑Amino-1,4-naphthoquinones

A straightforward and efficient electrochemical method for regioselective C­(sp2)–H selenylation and sulfenylation of substituted 2-amino-1,4-naphthoquinones has been unearthed.
Debopam Pal (14329518), Pintu Karmakar (14329515), Suravi Das (14329521), Indrajit Karmakar (4441996), Goutam Brahmachari (1537195)   +4 more
core   +2 more sources

UbiB proteins mediate an ATP‐dependent decarboxylation step in bacterial ubiquinone biosynthesis

The FEBS Journal, EarlyView.
UbiB proteins are atypical protein kinase‐like enzymes essential for ubiquinone biosynthesis. Here, we demonstrate that bacterial UbiB proteins catalyze the O2‐dependent decarboxylation of ubiquinone precursors, a process linked to their ATPase activity.
Katayoun Kazemzadeh, Bruno Faivre, Sophie‐Carole Chobert, Martial Rey, Sophie S. Abby, Julie Michaud, Tuan‐Anh Dinh, Alexandre Chilin, Olivier Lerouxel, Marc Fontecave, Fabien Pierrel, Murielle Lombard, Ludovic Pelosi   +12 more
wiley   +1 more source

Hitting Coronaviruses Where It Hurts: Antiviral Strategies Targeting Viral Proteins

ChemMedChem, Volume 21, Issue 19, 14 October 2026.
Viral proteins represent key vulnerabilities in human coronaviruses (HCoVs). This review outlines inhibitors targeting spike (S), main protease (Mpro), papain‐like protease (PLpro), and RNA‐dependent RNA polymerase (RdRp), mapping chemically diverse strategies that disrupt entry and replication, and provides an integrated view of current candidates ...
Álvaro de la Cruz‐Potenciano, Miguel Maldonado, María‐José Camarasa, Sonia de Castro   +3 more
wiley   +1 more source

Metal–Organic Frameworks for CO2 Conversion: From Simple Capture Materials to Multiple Function Platforms

Aggregate, Volume 7, Issue 10, October 2026.
This review summarizes recent advances in MOFs for CO2 valorization, covering MOF synthesis, CO2 capture, and photo/electrocatalytic CO2 reduction. Detailed discussion of typical strategies reveals the intrinsic structure–performance relationship, and challenges together with future perspectives are proposed.
Yingjia Li, Zhaoyuan Feng, Meiyu Zhang, Manman Shi, Lixue Zhao, Yuxiao Feng, Xing Zhang, Jiandong Cui   +7 more
wiley   +1 more source