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The palladium-catalyzed Sonogashira-type aerobic oxidative coupling of arylhydrazines with terminal alkynes via C-N bond cleavage has been developed; internal alkynes were afforded with a broad substrate scope. This reaction proceeds under copper- and base-free conditions with molecular oxygen as the sole oxidant and nitrogen and water as the only by-products.
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http://dx.doi.org/10.1039/c5cc04111b | DOI Listing |
Inorg Chem
September 2025
Boston University, Chemistry Department, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States.
Previously published (NMe)[V(O)(μ-O)(pin)], has been shown to aerobically catalyze the oxidation of benzylic and allylic alcohols under mild conditions. Herein, we report syntheses of [V(O)(μ-O)(pin)] trimers, which are also active in OAD catalysis. Trimer formation requires an ammonium cation with at least two hydrogen atoms per cation (e.
View Article and Find Full Text PDFDalton Trans
September 2025
Department of Chemistry and Protein Research Center for Bio-Industry, Hankuk University of Foreign Studies, Yongin 17035, Republic of Korea.
The nanoscale environment within the void spaces of metal-organic frameworks (MOFs) can significantly influence the photoredox catalytic activity of encapsulated visible-light photoredox catalysts (PCs). To compare two isostructural PC@In-MOF systems, three cationic Ru(II) polypyridine complexes were successfully encapsulated within the mesoscale channels of the anionic framework of InTATB (HTATB = 4,4',4''--triazine-2,4,6-triyltribenzoic acid), which features a doubly interpenetrated framework structure. This encapsulation yielded three heterogenized visible-light PCs, RuL@InTATB, where L = 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen), or 2,2'-bipyrazine (bpz).
View Article and Find Full Text PDFFEBS Open Bio
September 2025
Department of Metabolic Disease Research, Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia.
Electrical pulse stimulation (EPS) represents a useful tool to study exercise-related adaptations of muscle cells in vitro. Here, we examine the metabolic and secretory response of primary human muscle cells from metabolically healthy individuals to the EPS protocol reflecting the episodic nature of real-life exercise training. This intermittent EPS protocol alternates high-frequency stimulation periods with low-frequency resting periods.
View Article and Find Full Text PDFScand J Med Sci Sports
September 2025
Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
Dietary intake has an important influence on rates of fuel use during exercise, but the extent to which short-term diet changes affect peak fat oxidation (PFO) and the intensity at which this occurs (Fat) is unknown. This study examined the impact of diet-induced changes in substrate availability on PFO and Fat and the expression of key lipid-regulatory genes and proteins in skeletal muscle. Forty moderately to well-trained males (27 ± 5 years, V̇O 56.
View Article and Find Full Text PDFMedicine (Baltimore)
September 2025
Department of Infectious Diseases, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
Dichloroacetate (DCA), as a pan-inhibitor of pyruvate dehydrogenase kinase, plays a crucial role in energy metabolism and mitochondrial function. DCA decreases lactic acid synthesis, enhances mitochondrial oxidative phosphorylation, and regulates aerobic glycolysis. During the last decade, more and more studies have found that disorders of energy metabolism and mitochondrial dysfunction play a pivotal role in the development and progression of various diseases, and the role of DCA in cancer, metabolic diseases, and inflammatory diseases has been extensively explored in both basic and clinical studies.
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