Aminocarbonylation of alkenyl iodides with CO and amines proceeded under heating to produce α,β-unsaturated amides in good yields (23 examples, 71% average yield). This catalyst-free method exhibited good functional-group tolerance, and open a straightforward access to functionalized acrylamides, as illustrated by the synthesis of Ilepcimide. A hybrid radical/ionic mechanism involving chain electron transfer is proposed for this transformation.
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http://dx.doi.org/10.1021/acs.orglett.1c03714 | DOI Listing |
BMC Microbiol
January 2025
Engineering Research Center of Health Emergency, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China.
Background: Wastewater systems are usually considered antibiotic resistance hubs connecting human society and the natural environment. Antibiotic usage can increase the abundance of both ARGs (antibiotic resistance genes) and MGEs (mobile gene elements). Understanding the transcriptomic profiles of ARGs and MGEs remains a major research goal.
View Article and Find Full Text PDFActa Med Indones
October 2024
Division of Tropical and Infection Diseases, Department of Internal Medicine, Medical Faculty of Universitas Sebelas Maret - Moewardi Hospital, Surakarta, Indonesia.
A 71-year-old man complained of a blackish wound under his left eye, which began with fever and reddish spots after helping to slaughter a cow and cut its meat. The fever occured especially in the afternoon to evening, and is not accompanied by chills and sweating. On day 4 of fever onset, the fever diminished and the spots progressively widened with swelling.
View Article and Find Full Text PDFBiochemistry (Mosc)
December 2024
Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russia.
Human carbonic anhydrase IX (CAIX) plays a key role in maintaining pH homeostasis of malignant neoplasms, thus creating a favorable microenvironment for the growth, invasion, and metastasis of tumor cells. Recent studies have established that inhibition of CAIX expressed on the surface of tumor cells significantly increases the efficacy of classical chemotherapeutic agents and makes it possible to suppress the resistance of tumor cells to chemotherapy, as well as to increase their sensitivity to drugs (in particular, to reduce the required dose of cytostatic agents). In this work, we studied the ability of new CAIX inhibitors based on substituted 1,2,4-oxadiazole-containing primary aromatic sulfonamides, to potentiate the cytostatic effect of gefitinib (selective inhibitor of epidermal growth factor receptor tyrosine kinase domain) under hypoxic conditions.
View Article and Find Full Text PDFJ Chromatogr A
January 2025
Wageningen Food Safety Research (WFSR), European Union Reference Laboratory for antivirals, growth promotors and sedatives, Part of Wageningen University & Research, Wageningen 6700 AE, the Netherlands. Electronic address:
The recent unauthorization of antiviral drugs in food-producing animals according to Commission Delegated Regulation (EU) 2022/1644 have increased the need for food control laboratories to develop analytical methods and perform official controls. In this work, a simple and fast analytical methodology was developed for the simultaneous determination of 21 antiviral drugs in chicken muscle and liver by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). Chromatographic separation was achieved by an HILIC BEH amide column; followed by detection with a electrospray ionization source in positive and negative modes.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK; School of Geography, University of Bristol, Bristol BS8 1SS, UK.
Plastic mulch films support global food security, however, their composition and the potential release rates of organic, metal and metalloid co-contaminants remains relatively unknown. This study evaluates the low molecular weight organic additives, metal and metalloid content and leaching from low density polyethylene (LDPE) and biodegradable plastic mulch films. We identified 59 organic additives, and non-intentionally added substances in the new LDPE films (39.
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