Results 251 to 260 of about 81,546 (283)

ChemInform Abstract: Synthesis of (3S,4R)‐3,4‐Isopropylidenedioxy‐1‐pyrroline‐N‐oxide, an Enantiopure Functionalized Cyclic Nitrone; Cycloaddition Reactions with Dimethyl Maleate and Dimethyl Fumarate.

ChemInform, 1998
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
M. CLOSA, R. H. WIGHTMAN
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Desymmetrization of Cyclicmeso-Epoxides with Silicon Tetrachloride Catalyzed by PINDOX, a Chiral Bipyridine Mono-N-oxide

Organic Letters, 2009
PINDOX 8 has been identified as a chiral organocatalyst for the enantioselective ring-opening of cyclic meso-epoxides with SiCl(4) to produce chlorohydrins in up to 90% ee. The catalyst is most effective with saturated cyclic substrates containing more than seven carbon units.
Andrei V, Malkov, Malcolm R, Gordon, Sigitas, Stoncius, Javid, Hussain, Pavel, Kocovský   +4 more
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ChemInform Abstract: Cycloaddition/Ring Opening of 3‐Unsubstituted Cyclic Nitronates, Isoxazoline and 5,6‐Dihydro‐4H‐1,2‐oxazine N‐Oxides, as Synthetic Equivalents of Functionalized Nitrile Oxides.

ChemInform, 1999
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
S. KANEMASA, T. YOSHIMIYA, E. WADA
openaire   +1 more source

ChemInform Abstract: Six‐Membered Cyclic Nitrone Spin Traps. Part 1. Novel Reactions of 2‐ Methyl‐3,4,5,6‐tetrahydropyridine N‐Oxide with Some Organolithium and Grignard Reagents.

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Y.‐K. ZHANG, G.‐Z. XU
openaire   +1 more source

In vivo redox poising of the cyclic electron transport system of Rhodobacter capsulatus and the effects of the auxiliary oxidants, nitrate, nitrous oxide and trimethylamine N-oxide, as revealed by multiple short flash excitation

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1990
Intact cells of Rhodobacter capsulatus in the presence of myxothiazol were exposed to trains of short flashes of saturating light and the pattern of the absorbance changes due to P870, cytochrome (c + c) and the carotenoids that report on the membrane potential were monitored.
Jones, M. R., Richardson, D. J., McEwan, A. G., Ferguson, S. J., Jackson, J. B.   +4 more
openaire   +3 more sources

One‐Pot Synthesis of Substituted Indole N‐Oxides: TiCl₄‐Mediated Baylis—Hillman Reaction of α‐Oxo Cyclic Ketene‐S,S‐acetal with o‐Nitrobenzaldehydes and Subsequent Intramolecular Cyclization.

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Wei Pan, Dewen Dong, Shaoguang Sun, Qun Liu   +3 more
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Enantioselective Addition of Cyclic Enol Silyl Ethers to 2‐Alkenoyl‐Pyridine‐N‐Oxides Catalysed by Cu^II–Bis(oxazoline) Complexes

Chemistry – A European Journal, 2012
AbstractAsymmetric reactions involving (E)‐3‐aryl‐1‐(pyridin‐2‐yl‐N‐oxide)prop‐2‐en‐1‐ones and cyclic enol silyl ethers show good yields and excellent enantioselectivities (up to 99.9 % ee) when catalysed by bis(oxazoline)–CuII complexes. Different reaction pathways can be followed by different enol silyl ethers: with 2‐(trimethylsilyloxy)furan, a ...
LIVIERI, ALESSANDRO, BOIOCCHI, MASSIMO, DESIMONI, GIOVANNI, FAITA, GIUSEPPE   +3 more
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Cyclic Nitrone Free Radical Traps:  Isolation, Identification, and Synthesis of 3,3-Dimethyl-3,4-dihydroisoquinolin-4-ol N-Oxide, a Metabolite with Reduced Side Effects

Journal of Medicinal Chemistry, 1996
A C-4 hydroxylated metabolite (2, 3,3-dimethyl-3,4-dihydroisoquinolin-4-ol N-oxide) of the previously described cyclic nitrone free radical trap 1 (3,3-dimethyl-3,4-dihydroisoquinoline N-oxide, a cyclic analog of phenyl-tert-butylnitrone (PBN)) was isolated, identified, and synthesized.
C E, Thomas, P, Bernardelli, S M, Bowen, S F, Chaney, D, Friedrich, D A, Janowick, B K, Jones, F J, Keeley, J H, Kehne, B, Ketteler, D F, Ohlweiler, L A, Paquette, D J, Robke, T L, Fevig   +13 more
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Cyclic Conversion of the Novel Src Kinase Inhibitor [7-(2,6-Dichloro-phenyl)-5-methyl-benzo[1,2,4]triazin-3-yl]-[4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-amine (TG100435) and Its N-Oxide Metabolite by Flavin-Containing Monoxygenases and Cytochrome P450 Reductase

Drug Metabolism and Disposition, 2007
[7-(2,6-Dichloro-phenyl)-5-methyl-benzo[1,2,4]triazin-3-yl]-[4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-amine (TG100435) is a novel multi-targeted Src family kinase inhibitor with demonstrated anticancer activity in preclinical species. Potent kinase inhibition is associated with TG100435 and its major N-oxide metabolite [7-(2,6-dichlorophenyl)-5-methyl ...
Ahmed, Kousba, Richard, Soll, Shiyin, Yee, Michael, Martin   +3 more
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Model iron-catalyzed biomimetic cyclization of a cyclic tryptamine N-oxide

The Journal of Organic Chemistry, 1972
C A, Scherer, C A, Dorschel, J M, Cook, P W, Le Quesne   +3 more
openaire   +2 more sources