Results 81 to 90 of about 11,091 (232)

Reaction Mechanisms of H₂S Oxidation by Naphthoquinones

Antioxidants
1,4-naphthoquinones (NQs) catalytically oxidize H2S to per- and polysufides and sulfoxides, reduce oxygen to superoxide and hydrogen peroxide, and can form NQ-SH adducts through Michael addition.
Kenneth R. Olson, Kasey J. Clear, Tsuyoshi Takata, Yan Gao, Zhilin Ma, Ella Pfaff, Anthony Travlos, Jennifer Luu, Katherine Wilson, Zachary Joseph, Ian Kyle, Stephen M. Kasko, Prentiss Jones Jr, Jon Fukuto, Ming Xian, Gang Wu, Karl D. Straub   +16 more
doaj   +1 more source

PLS-Prediction and Confirmation of Hydrojuglone Glucoside as the Antitrypanosomal Constituent of Juglans Spp.

Molecules, 2015
Naphthoquinones (NQs) occur naturally in a large variety of plants. Several NQs are highly active against protozoans, amongst them the causative pathogens of neglected tropical diseases such as human African trypanosomiasis (sleeping sickness), Chagas ...
Therese Ellendorff, Reto Brun, Marcel Kaiser, Jandirk Sendker, Thomas J. Schmidt   +4 more
doaj   +1 more source

Catalytic Enantioselective Synthesis of Conformationally Stable C(sp2)−C(sp3) Naphthocoumarin Atropisomers

Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.
The enantioselective synthesis of naphthocoumarin adducts via a tandem organocatalytic 1,4‐addition/decarboxylation delivers excellent control over a newly forged stereocenter and yields configurationally stable synclinal atropisomers. The process features broad substrate scope and scalability, and its structural and mechanistic foundations are ...
M. Chiara Cabua, Davide Moi, Emanuele Cocco, Valentina Onnis, Enrico Podda, David J. Aitken, Armando Carlone, Renzo Luisi, Enrica Tuveri, Drew F. Parsons, Francesco Secci   +10 more
wiley   +1 more source

Antileishmanial Activity of 2-Methoxy-4H-spiro-[naphthalene-1,2′-oxiran]-4-one (Epoxymethoxy-lawsone): A Promising New Drug Candidate for Leishmaniasis Treatment

Molecules, 2018
Epoxymethoxylawsone is a naphthoquinone derivative promising as drug candidate for the treatment of leishmaniases. In the present work the effectiveness of epoxymethoxylawsone, and meglumine antimoniate on Leishmania (Leishmania) amazonensis parasites ...
Luiz Filipe Gonçalves Oliveira, Franklin Souza-Silva, Luzia Monteiro de Castro Côrtes, Lea Cysne-Finkelstein, Mirian Cláudia de Souza Pereira, Francisco Odêncio de Oliveira Junior, Rosa Teixeira Pinho, Suzana Corte Real, Saulo Cabral Bourguignon, Vitor Francisco Ferreira, Carlos Roberto Alves   +10 more
doaj   +1 more source

Asymmetric Transformations of α,β‐Unsaturated Oxazolidinones Catalyzed by C2‐Symmetric Chiral Iron Triad Complexes

Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.
This review highlights the evolution of highly enantioselective oxazolidinone transformations enabled by C2‐symmetric ligands, with emphasis on chiral iron triad complexes as cost‐effective, environmentally benign alternatives to late‐transition‐metal catalysts.
Arthur David, Thierry Ollevier
wiley   +1 more source

Utilization of Fermentation Process for the Production of Novel Plant‐Based Meat Analogs: A Review of Microorganisms, Processing, and Regulations

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 3, May 2026.
ABSTRACT The production of plant‐based meat analogues from various protein sources is an emerging application worldwide, driven by growing population and health concerns. Many microorganisms during fermentation play a crucial role in fermented plant‐based meat alternatives, together with structuring and analytical approaches in terms of nutritional ...
Fatma Beyza Özpınar, Sevda Dere, Serdar Altunay, Osman Sagdic, Enes Dertli   +4 more
wiley   +1 more source

Fluorescence of Naphthoquinones [PDF]

Nature, 1954
ATTEMPTS to devise a method for the identification of vitamin K1 and other naphthoquinones by filter-paper chromatography led to the chance observation that some of these compounds exhibit a characteristic fluorescence which can be used for their detection. 10 µgm.
openaire   +1 more source

Laccase‐Catalyzed Dimerization of Honokiol and Magnolol for Multitarget Metabolic Enzyme Inhibitors

ChemBioChem, Volume 27, Issue 7, 14 April 2026.
Laccase‐Catalyzed Dimerization: An exploration of fungal laccases as sustainable biocatalysts for the synthesis of bioactive neolignan dimers of honokiol and magnolol. The optimization of the dimerization conditions reveals an efficient approach to obtain natural and new dimers, whose improved in vitro inhibitory activity against metabolic enzymes ...
Claudia Sciacca, Nunzio Cardullo, Luana Pulvirenti, Simona Varriale, Libera Vitiello, Cinzia Pezzella, Vera Muccilli   +6 more
wiley   +1 more source

Effects of the serjania erecta and zeyheria montana ethanol extracts in experimental pulpitis in rats: a histological study [PDF]

, 2013
Objectives: The aim of this study was to evaluate, by the semi-quantitative histological analysis, the anti-inflammatory activity of the ethanolic extracts of Serjania erecta e Zeyheria Montana, in experimental pulpits in rats.
Couto, Lucélio Bernardes, Cruz Perez, Danyel Elias da, Guenka, Leandro Caetano, Nossa, Patrícia Mara   +3 more
core   +1 more source

Metalloids: Semi as Metals yet Full of Antimicrobial Potential

ChemMedChem, Volume 21, Issue 7, 14 April 2026.
Metalloids such as boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), and tellurium (Te) bridge metals and non‐metals, displaying unique chemical versatility. Recent research highlights their diverse antimicrobial and therapeutic potentials, from natural products to synthetic organic and organometallic molcules, underscoring renewed ...
Kevin Böhm, Muhammad Jawad Nasim, Claus Jacob   +2 more
wiley   +1 more source