An unusual and efficient method for the synthesis of new quinone-based amine and its derivatives from the corresponding alpha,alpha-amino ester is described. The procedure involves the quinone-based system's oxidative decarboxylation via hydride transfer throughout basic hydrolysis. This synthetic method provides, with good yields, rapid access to new potentially cytotoxic quinones.
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http://dx.doi.org/10.1039/b918898c | DOI Listing |
Int J Biol Sci
January 2025
Department of Biochemistry, School of Medicine, Keimyung University, Daegu 42601, Republic of Korea.
Renal cell carcinoma (RCC) is considered as a "metabolic disease" due to various perturbations in metabolic pathways that could drive cancer development. Glycine decarboxylase (GLDC) is a mitochondrial enzyme that takes part in the oxidation of glycine to support nucleotide biosynthesis via transfer of one-carbon units. Herein, we aimed to investigate the potential role of GLDC in RCC development.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China. Electronic address:
Enhancing the decomposition rate of ammonium perchlorate (AP), the most common oxidizer in solid propellants, is important for improving propellant performance. Metal organic frameworks (MOFs) have been developed as key materials for catalyzing AP decomposition, as they can achieve good dispersion of active sites through in-situ decomposition. Despite having considerable potential, the structural transformation process and catalytic performance of MOFs in AP decomposition are still unclear, which seriously hinders their application in the field of AP decomposition.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, University Town, Guangzhou 510006, China.
Co-metabolism with appropriate carbon sources has been demonstrated to effectively enhance the removal of ubiquitous recalcitrant micropollutant by microalgae. However, the specific impacts of carbon sources on the co-metabolism of antibiotics by microalgae remain insufficiently explored. In this study, transcriptomics, gene network analysis, extracellular polymeric substances (EPS), and enzymatic activity involved in co-metabolic pathways of norfloxacin (NFX), were systematically evaluated to investigate the underlying biological mechanisms involved in NFX co-metabolism by Chlorella pyrenoidosa.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
Center for Genomics and Precision Medicine, Institute of Bioscience and Technology, Texas A&M Health Science Center, Houston, TX 77030, USA.
Our group has synthesized a pleiotropic synthetic nanozyme redox mediator we term a "pleozyme" that displays multiple enzymatic characteristics, including acting as a superoxide dismutase mimetic, oxidizing NADH to NAD, and oxidizing HS to polysulfides and thiosulfate. Benefits have been seen in acute and chronic neurological disease models. The molecule is sourced from coconut-derived activated charcoal that has undergone harsh oxidization with fuming nitric acid, which alters the structure and chemical characteristics, yielding 3-8 nm discs with broad redox potential.
View Article and Find Full Text PDFCommun Chem
December 2024
Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK.
Fe(II)- and 2-oxoglutarate (2OG)-dependent dioxygenases use 2OG and O cofactors to catalyse substrate oxidation and yield oxidised product, succinate, and CO. Simultaneous detection of substrate and cofactors is difficult, contributing to a poor understanding of the dynamics between substrate oxidation and 2OG decarboxylation activities. Here, we profile 5-methylcytosine (C)-oxidising Ten-Eleven Translocation (TET) enzymes using MS and H NMR spectroscopy methods and reveal a high degree of substrate oxidation-independent 2OG turnover under a range of conditions.
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