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An efficient protocol for the synthesis of furans through Rh(III)-catalyzed vinyl C-H activation from acrylic acids and α-diazocarbonyl compounds has been developed. The reaction features broad functional group tolerance and affords a series of furans in moderate to good yields. Moreover, no additives such as copper or silver salts are required. Some control experiments are performed to give insight into the mechanism of this cascade transformation and the decarbonylation process is involved in the formation of the furan product.
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http://dx.doi.org/10.1021/acs.joc.2c00924 | DOI Listing |
Angew Chem Int Ed Engl
September 2025
Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042, China.
Developing the efficient C─H bond activation carboxylation processes for furoic acid (FA) represents a critical technological challenge in achieving atom-economical synthesis of 2,5-furandicarboxylic acid (FDCA). Despite notable advancements in this field, the inherent contradiction between the high reactivity of furan rings and the chemical inertness of C─H bonds poses substantial technical bottleneck for achieving controllable C─H carboxylation under mild conditions. Herein, we report a high lattice-distorted MnOx catalyst with surface trench-like structures, wherein the Mn-O-conjugated configurations and electron-rich Mn cooperatively drive FA dehydrogenation and carbon radical reduction, inducing the free radical evolution process (FA→carbon-centered FA radical→FA carbanion), then coupled with solvent-polarized CO to accelerate the carboxylation process.
View Article and Find Full Text PDFCurr Drug Discov Technol
September 2025
School of BioSciences and Technology, Vellore Institute of Technology, VIT University, Vellore, Tamil Nadu, India.
Introduction: Streptomyces species have complex genomes, including various biosynthetic gene clusters, frequently responsible for producing antibacterial and bioactive secondary metabolites under certain environmental conditions. To assess the impact of Magnesium and Iron on Streptomyces sp. VITGV100 secondary metabolite production and bioactivity, including molecular docking studies to predict their therapeutic potential.
View Article and Find Full Text PDFFood Res Int
November 2025
Faculdade de Engenharia de Alimentos (FEA), Universidade Estadual de Campinas (UNICAMP), Rua Monteiro Lobato, 80, 13083-862, Campinas, São Paulo, Brazil. Electronic address:
The hydrolysis of biomass in fermentative processes often faces the difficulty of generating inhibitory products. Its reduction or removal is essential to enable the use of agro-industrial waste, such as cashew apple bagasse. Therefore, this study aimed to find an optimized condition for the hydrolysis of cashew apple bagasse by subcritical water and to introduce an in-line pre-purification process.
View Article and Find Full Text PDFPLoS One
September 2025
Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Republic of Korea.
The oral epithelial barrier plays a crucial role in maintaining oral health by protecting against microbial invasion and mechanical stress while regulating selective permeability. Disruption of this barrier contributes to inflammation and the development of oral diseases such as gingivitis and periodontitis. Pinoresinol, a lignan with antioxidant, antimicrobial, and anti-inflammatory properties, has demonstrated health benefits in systemic diseases; however, its effects on oral epithelial barrier integrity remain unclear.
View Article and Find Full Text PDFBrief Bioinform
August 2025
College of Pharmacy, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400016, P. R. China.
Drug-induced hepatotoxicity (DIH), characterized by diverse phenotypes and complex mechanisms, remains a critical challenge in drug discovery. To systematically decode this diversity and complexity, we propose a multi-dimensional computational framework integrating molecular structure analysis with disease pathogenesis exploration, focusing on drug-induced intrahepatic cholestasis (DIIC) as a representative DIH subtype. First, a graph-based modularity maximization algorithm identified DIIC risk genes, forming a DIIC module and eight disease pathogenesis clusters.
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