A one-pot procedure for the oxidative amidation of aldehydes via the generation of reactive nitrile imine (NI) intermediates has been developed. Distinct from our progenitor processes, mechanistic and control experiments revealed that the NI undergoes rapid oxidation to an acyl diazene species, which then facilitates -acylation of an amine. A range of substrates have been explored, including application in the synthesis of pharmaceutically relevant compounds.
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http://dx.doi.org/10.1021/acs.joc.4c00575 | DOI Listing |
Acta Neurobiol Exp (Wars)
January 2025
Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Piperine is an amide alkaloid isolated from the black pepper plant. This study examined the pain‑relieving activity of piperine against paclitaxel (PTX)‑induced neuropathy. Male mice were divided into 6 groups: Sham‑operated group (remained intact), PTX group (PTX‑treated mice receiving normal saline), PTX+ piperine 10, 25, and 50 mg/kg groups (PTX‑treated mice receiving piperine) and positive control group (PTX‑treated mice receiving imipramine 10 mg/kg).
View Article and Find Full Text PDFJ Org Chem
January 2025
School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China.
A highly efficient Minisci reaction of pyrimidines with alkyl radical generated from visible-light-induced activation of simple C(sp)-H feedstocks such as (cyclo)alkanes, ethers, alcohols, esters, and amides is reported. A mechanistic study revealed that alkyl radical was generated via hydrogen atom transfer (HAT) of C(sp)-H with dichloromethyl radical (·CHCl), which was generated by photoreduction of chloroform.
View Article and Find Full Text PDFPak J Pharm Sci
January 2025
Department of Basic Veterinary Medicine, Faculty of Veterinary Medicine, Airlangga, University, Surabaya, Indonesia.
This study attempts to prove that the antioxidant effect of fucoxanthin nanoparticles can prevent streptozotocin-induced rat liver damage. Fucoxanthin nanoparticles are synthesized using the high-energy ball milling method. Dynamic Light Scattering (DLS) was then used to describe the sizes of the fucoxanthin nanoparticles.
View Article and Find Full Text PDFNat Commun
January 2025
Zhejiang Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, PR China.
Amine-assisted two-step CO hydrogenation is an efficient route for methanol production. To maximize the overall catalytic performance, both the N-formylation of amine with CO (i.e.
View Article and Find Full Text PDFNutrients
December 2024
Department of Pharmacognosy, Faculty of Pharmacy, "Iuliu Haţieganu" University of Medicine and Pharmacy, 400010 Cluj-Napoca, Romania.
Background/aim: L. () is an aromatic medicinal species with important nutraceutical potential, having rosmarinic acid (RA) as one of its main metabolites. The present study aims to evaluate the effects of an extract obtained from the leaves of this species and of its main metabolite in improving the streptozotocin-induced damage of hearts and aorta of diabetic rats.
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