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Under Ir-catalyzed conditions, N-2°-alkyl or N-3°-alkyl substituents of diverse tertiary aryl amides can be exchanged with the ortho-aryl C─H bond of the aromatic unit. These alkyl transfer processes employ a homochiral diphosphonite ligand, and this enforces notable levels of enantioconvergency for non-stereodefined 2°-alkyl substituents. Related processes allow the intermolecular transfer of N-2°-alkyl substituents, providing a convenient means of introducing difficult-to-install ortho-alkyl units.
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http://dx.doi.org/10.1002/anie.202509193 | DOI Listing |
Acc Chem Res
September 2025
Department of Chemistry, FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street W, Montréal, Québec H3A 0B8, Canada.
ConspectusMolecular photochemistry, by harnessing the excited states of organic molecules, provides a platform fundamentally distinct from thermochemistry for generating reactive open-shell or spin-active species under mild conditions. Among its diverse applications, the resurgence of the Minisci-type reaction, a transformation historically reliant on thermally initiated radical conditions, has been fueled by modern photochemical strategies with improved efficiency and selectivity. Consequently, the photochemical Minisci-type reaction ranks among the most enabling methods for C()-H functionalizations of heteroarenes, which are of particular significance in medicinal chemistry for the rapid diversification of bioactive scaffolds.
View Article and Find Full Text PDFNucleic Acids Res
September 2025
School of Microbiology, University College Cork, Cork, T12 Y337, Ireland.
The genomes of 43 distinct lactococcal strains were reconstructed by a combination of long- and short-read sequencing, resolving the plasmid complement and methylome of these strains. The genomes comprised 43 chromosomes of approximately 2.5 Mb each and 269 plasmids ranging from 2 to 211 kb (at an average occurrence of 6 per strain).
View Article and Find Full Text PDFNucleic Acids Res
September 2025
Division of Chromatin Regulation, National Institute for Basic Biology, Okazaki 444-8585, Japan.
Methylation of histone H3 at lysine 9 (H3K9me), a hallmark of heterochromatin, is catalyzed by Clr4/Suv39. Clr4/Suv39 contains two conserved domains-an N-terminal chromodomain and a C-terminal catalytic domain-connected by an intrinsically disordered region (IDR). Several mechanisms have been proposed to regulate Clr4/Suv39 activity, but how it is regulated under physiological conditions remains largely unknown.
View Article and Find Full Text PDFGen Physiol Biophys
September 2025
The Second Department of Nephrology, The First Affiliated Hospital of Kunming Medical University, Kunming, China.
Diabetic nephropathy (DN) is a major complication of diabetes, imposing substantial socioeconomic and public health challenges. N6-methyladenosine (m6A) modification, a prevalent epigenetic mechanism, influences cellular processes and disease progression. Wilms' tumor 1-associating protein (WTAP), an m6A methyltransferase subunit, was investigated for its role in DN.
View Article and Find Full Text PDFMedicine (Baltimore)
September 2025
Department of General Surgery, Beijing Tongren Hospital, Beijing, China.
This study investigates the clinical value of plasma Septin-9 gene methylation (mSEPT9) and carcinoembryonic antigen (CEA) in colorectal cancer (CRC), and their correlations with clinicopathological features and recurrence. A retrospective study included 81 CRC patients (observation group) and 73 healthy controls (comparison group) from January 2021 to January 2023, with pathological diagnosis as the gold standard. Plasma mSEPT9 (via quantitative PCR) and CEA (via electrochemiluminescence) levels were measured.
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