Upon reaction with PhI(OAc)(2), α-oxo-aldoximes are oxidized to α-oxo-nitrile oxides, while α-oxo-ketoximes are converted into nitrile oxides via the oxidative cleavage of the carbonyl-imino σ bond. The nitrile oxides thus formed were trapped with norbornene or styrene in good yield. α,α'-Dioxo-ketoximes react less efficiently.
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http://dx.doi.org/10.1021/jo102241s | DOI Listing |
Int J Biol Macromol
January 2025
School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Rd., Zhenjiang, Jiangsu 212013, China. Electronic address:
The development of an efficient coating with comprehensive antimicrobial and anticorrosion properties for metals is crucial. The present study used a one-pot strategy to fabricate a high-performance nanocomposite coating of carboxylated nitrile butadiene rubber/cellulose nanofibers/zinc oxide (XNBR/CNF-ZnO), demonstrating excellent potential for application in the protection against metal corrosion. Eco-friendly CNF-ZnO nanomaterials, prepared using the in-situ generation method, were used as reinforcing fillers, while XNBR was used as the matrix material.
View Article and Find Full Text PDFCardiovasc Ther
January 2025
Department of Cardiothoracic Surgery, Ningbo Medical Center Lihuili Hospital of Ningbo University, No. 57, Xingning Rd, Ningbo City 315041, Zhejiang Province, China.
Doxorubicin (DOX) is a widely used antitumor drug; however, its use is limited by the risk of serious cardiotoxicity. Dehydroevodiamine (DHE) is a quinazoline alkaloid which has antiarrhythmic effects. The aim of this study was to investigate the protective effect of DHE on doxorubicin-induced cardiotoxicity (DIC) and its potential mechanism.
View Article and Find Full Text PDFOrg Lett
December 2024
Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India.
A Lewis acid-mediated C2-trifluoroethylamidation of quinolines, employing quinoline oxides, trifluorodiazoethane, and acetonitrile to forge a new class of (quinolin2-yl)-(trifluoroethyl)acetamide is presented in this Letter. The reaction proceeds through a carbene generation/nitrile ylide formation/(3 + 2) cycloaddition/rearrangement cascade to furnish quinoline-2-(trifluoroethyl)acetamide derivatives in high yields.
View Article and Find Full Text PDFJ Nat Prod
December 2024
Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States.
Marine sponge diterpenoid isonitriles are exceptional nitrogenous natural products that exhibit antiplasmodial activity. Their biosynthesis presents a biosynthetic puzzle: how do the elements of NC engage terpenyl carbocations in isoprenoid secondary metabolism, and what is the biosynthetic precursor of the NC group? Cyanoformic acid (NC-COOH, ) is proposed as a plausible delivery vehicle of NC that resolves a paradox in the commonly held proposition that an inorganic cyanide anion, CN, terminates terpenoid isonitrile (TI) biosynthesis. DFT calculations of NC-COOH and its conjugate base, cyanoformate, NC-COO (), support high nucleophilicity at N and explain bond-forming constitutionality: attack at N and formation of an isonitrile over its nitrile isomer.
View Article and Find Full Text PDFPolymers (Basel)
November 2024
Center of Physical Chemical Methods of Research and Analysis, Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050038, Kazakhstan.
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