The dioxygenation of alkenes using molecular oxygen and a simple hydroxamic acid derivative has been achieved. The reaction system consists of readily prepared methyl N-hydroxy-N-phenylcarbamate and molecular oxygen with a radical initiator, offering an alternative to common dioxygenation processes catalyzed by precious transition metals. This transformation capitalizes on the unique reactivity profile of hydroxamic acid derivatives in radical-mediated alkene addition processes.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/ja206306f | DOI Listing |
Int J Mol Sci
January 2025
Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
Precise binding free-energy predictions for ligands targeting metalloproteins, especially zinc-containing histone deacetylase (HDAC) enzymes, require specialized computational approaches due to the unique interactions at metal-binding sites. This study evaluates a docking algorithm optimized for zinc coordination to determine whether it could accurately differentiate between protonated and deprotonated states of hydroxamic acid ligands, a key functional group in HDAC inhibitors (HDACi). By systematically analyzing both protonation states, we sought to identify which state produces docking poses and binding energy estimates most closely aligned with experimental values.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Department of Pathogen Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, China.
is a globally widespread pathogen of significant veterinary and medical importance, causing abortion or congenital disease in humans and other warm-blooded animals. Nevertheless, the current treatment options are restricted and sometimes result in toxic side effects. Hence, it is essential to discover drugs that demonstrate potent anti- activity.
View Article and Find Full Text PDFPhytochemistry
January 2025
School of Pharmaceutical Sciences, South-Central Minzu University, 182 Minzu Road, Wuhan 430074, China; School of Pharmacy, Anhui University of Chinese Medicine, 350 Longzihu Road, Hefei, 230012, China. Electronic address:
Cultivation of the endophytic fungus Robillarda sessilis XL-308 with SAHA resulted in the discovery of two previously undescribed cyclonerane sesquiterpenes (1 and 2), one previously unreported norcadinane type sesquiterpene (3), and seven suberanilohydroxamic acid (SAHA) derivatives (4-10). The identification of previously undescribed compounds was confirmed through NMR spectroscopic analyses, quantum chemistry calculations, and single-crystal X-ray crystallography. Among them, compounds 1 and 2 were products of the silenced genome in XL-308 that activated by SAHA.
View Article and Find Full Text PDFClin Transl Med
January 2025
State Key Laboratory of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, China.
Background: Numerous pathogenic variants causing human oocyte maturation arrest have been reported on the primate-specific TUBB8 gene. The main etiology is the dramatic reduction of tubulin α/β dimer, but still large numbers of variants remain unexplained.
Methods: Using microinjection mRNA and genome engineering to reintroduce the conserved pathogenic missense variants into oocytes or in generating TUBB8 variant knock-in mouse models, we investigated that the human deleterious variants alter microtubule nucleation and spindle assembly during meiosis.
J Oral Biosci
January 2025
Department of Biochemistry, Nihon University School of Dentistry, Tokyo, Japan; Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan. Electronic address:
Objectives: Exposure of gingival epithelial cells to butyrate, a short-chain fatty acid produced by dental plaque bacteria, cause cell death and subsequent damage-associated molecular pattern (DAMP) release. We investigated the effects of curcumin, a polyphenol extracted from turmeric, on butyrate-induced human gingival epithelial Ca9-22 cell death and DAMP release.
Methods: Ca9-22 cells were pretreated with curcumin before butyrate exposure.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!