A highly efficient palladium-catalyzed acylative cross-coupling of carboxylic amides with arylboronic acids has been achieved via synergistic activation of the C(acyl)-N bond by independently modifiable activating groups. Coupling of amides features not only good functional group tolerance but also modifiable reactivities to overcome steric hindrance.
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http://dx.doi.org/10.1039/c5cc00430f | DOI Listing |
Nanomaterials (Basel)
January 2025
School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan.
Doxorubicin (DOX) is one of the most widely used chemotherapy drugs in the treatment of both solid and liquid tumors in patients of all age groups. However, it is likely to produce several side effects that include doxorubicin cardiomyopathy. Nanoparticles (NPs) can offer targeted delivery and release of the drug, potentially increasing treatment efficiency and alleviating side effects.
View Article and Find Full Text PDFProtein Sci
February 2025
Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota Twin Cities, St. Paul, Minnesota, USA.
N-Methylation of the peptide backbone confers pharmacologically beneficial characteristics to peptides that include greater membrane permeability and resistance to proteolytic degradation. The borosin family of ribosomally synthesized and post-translationally modified peptides offer a post-translational route to install amide backbone α-N-methylations. Previous work has elucidated the substrate scope and engineering potential of two examples of type I borosins, which feature autocatalytic precursors that encode N-methyltransferases that methylate their own C-termini in trans.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
University of Amsterdam Van 't Hoff Institute for Molecular Sciences: Universiteit van Amsterdam Van 't Hoff Institute for Molecular Sciences, HIMS, NETHERLANDS, KINGDOM OF THE.
The complexity of allosteric enzymatic regulation continues to inspire synthetic chemists seeking to emulate interconnected biological systems. In this work, a Pt2L4 cage capable of catalyzing the cyclization reaction of an alkynoic tosyl amide is orthogonally coupled to a diacid-catalyzed carbodiimide-hydration cycle. This new Pt-catalyzed cyclization reaction is demonstrated to exhibit electronic regulation by inclusion of different guest effectors.
View Article and Find Full Text PDFAcc Chem Res
January 2025
Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States.
ConspectusUnderstanding f element-ligand covalency is at the center of efforts to design new separations schemes for spent nuclear fuel, and is therefore of signficant fundamental and practical importance. Considerable effort has been invested into quantifying covalency in f element-ligand bonding. Over the past decade, numerous studies have employed a variety of techniques to study covalency, including XANES, EPR, and optical spectroscopies, as well as X-ray crystallography.
View Article and Find Full Text PDFCommun Biol
January 2025
Department of General Surgery & Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Phosphodiesterase-5 (PDE5) inhibitors have shown promise as anti-cancer agents in malignancies. However, their specific effects on gastric cancer (GC) and the underlying mechanisms remain elusive. Our aim was to investigate this by combining evidence from population-based studies with data obtained from in vivo and in vitro experiments.
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