Results 91 to 100 of about 7,313 (206)

Bismuth Compounds React With a Nitrone: Lewis Pair Formation and Quantification of Radical Trapping

Helvetica Chimica Acta, Volume 109, Issue 1, January 2026.
The spin trap Simple Lewis adducts of the spin trap α‐phenyl‐N‐tertbutyl‐nitrone (PBN) are reported for the first time, using the dimethyl bismuth cation [BiMe2(SbF6)] as a Lewis‐acidic bonding partner. The ability of [BiMe2(SbF6)] and a range of neutral organobismuth compounds to transfer organic radicals to PBN is demonstrated qualitatively and ...
Andreas Stoy, Johannes Schwarzmann, Felix Geist, Ahmed Fetoh, Malte Jürgensen, Jordi Poater, Istemi Kuzu, Crispin Lichtenberg   +7 more
wiley   +1 more source

Synthesis of new enantiopure poly(hydroxy)aminooxepanes as building blocks for multivalent carbohydrate mimetics

Beilstein Journal of Organic Chemistry, 2014
New compounds with carbohydrate-similar structure (carbohydrate mimetics) are presented in this article. Starting from enantiopure nitrones and lithiated TMSE-allene we prepared three 1,2-oxazine derivatives which underwent a highly stereoselective Lewis
Léa Bouché, Maja Kandziora, Hans-Ulrich Reissig   +2 more
doaj   +1 more source

nitrones

, 2014
Citation: 'nitrones' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.N04164 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Silver and platinum-catalysed addition of O–H and N–H bonds to allenes [PDF]

, 2014
Transition-metal catalysed nucleophile addition to allenes is a very powerful tool for the synthesis of functionalised molecules containing heteroatoms, heterocycles in the intramolecular version, or allyl derivatives in the intermolecular version.
Munoz-Herranz, Maria
core   +1 more source

Cooperative Photocatalysis of 9,10‐Phenanthrenequinone and Sn(OTf)2 for Direct Mannich Reaction of Ethers via Hydrogen Atom Transfer Pathway

Advanced Synthesis &Catalysis, Volume 367, Issue 23, December 11, 2025.
A dual photocatalytic system of o‐PQ and Sn(OTf)2 enables visible light‐induced Mannich‐type addition of ethers to nitrones via Csp³–H activation. This oxidant‐free method offers broad scope and good yields. Mechanistic studies suggest that a photoexcited o‐PQ–Sn(II) complex mediates hydrogen atom transfer to form α‐oxy radicals for nitrone addition. A
Pradip Ramdas Thorve, Hun Young Kim, Kyungsoo Oh   +2 more
wiley   +1 more source

(Z)-1-(1,3-Diphenyl-1H-pyrazol-4-yl)-N-phenylmethanimine N-oxide

IUCrData, 2018
In the title nitrone, C22H17N3O, the dihedral angles between the central pyrazole ring and pendant N-bound, C-bound and nitrone-bound phenyl rings are 20.93 (6), 41.27 (6), and 32.57 (6)°, respectively.
Shaaban K. Mohamed, Joel T. Mague, Mehmet Akkurt, Awad I. Said, Farouq E. Hawaiz, Sahar M. I. Elgarhy   +5 more
doaj   +1 more source

Phosphonated Carbocyclic 2'-Oxa-3'-azanucleosides as New Antiretroviral Agents [PDF]

, 2007
Phosphonated carbocyclic 2¢-oxa-3¢-azanucleosides have been synthesized and tested for their antiretroviral activity. The obtained results have shown that some of the compounds were as powerful as azydothymidine in inhibiting the reverse transcriptase ...
Balestrieri, E, Borrello, L, Chiacchio, U, Iannazzo, D, Macchi, B, Mastino, A, Piperno, A, Rescifina, A, Romeo, G, Romeo, R, Sciortino, M   +10 more
core   +1 more source

Engineering exosomes for Alzheimer's disease: Multi‐target therapeutic strategies from pathogenesis to clinical translation

Clinical and Translational Medicine, Volume 15, Issue 12, December 2025.
Exosomes, modified through multidimensional approaches including physical, chemical and genetic means, and equipped with brain‐targeted peptides and therapeutic agents, are capable of crossing the blood‒brain barrier for precise delivery. They can simultaneously remove amyloid‐beta plaques and neurofibrillary tangle, inhibit neuroinflammation, and pave
Yuehan Zhang, Zhenyang Li, Haien Guan, Zhenhua Qiu, Chunlin Zou   +4 more
wiley   +1 more source

Synthesis of tetrafluorinated piperidines from nitrones via a visible-light-promoted annelation reaction

Beilstein Journal of Organic Chemistry, 2020
A method for the one-step construction of 3,3,4,4-tetrafluorinated piperidines from nitrones and readily accessible tetrafluorinated iodobromobutane is described.
Vyacheslav I. Supranovich, Igor A. Dmitriev, Alexander D. Dilman   +2 more
doaj   +1 more source

Additional outcomes and subgroup analyses of NXY-059 for acute ischemic stroke in the SAINT I trial [PDF]

, 2006
<p><b>Background and Purpose:</b> NXY-059 is a free radical-trapping neuroprotectant demonstrated to reduce disability from ischemic stroke. We conducted analyses on additional end points and sensitivity analyses to confirm our findings.
Ashwood, T., Davalos, A., Davis, S.M., Diener, H.-C., Emeribe, U., Grotta, J., Hardemark, H.G., Lees, K.R., Lyden, P., Shuaib, A., Wasiewski, W., Zivin, J.A.   +11 more
core   +1 more source