5-Diethoxyphosphoryl-5-methyl-1-pyrroline N-oxide (DEPMPO): a new phosphorylated nitrone for the efficient In Vitro and In Vivo spin trapping of oxygen-centred radicals
Reversible Reactions of Thiols and Thiyl Radicals with Nitrone Spin Traps
作者:Dmitrii I. Potapenko、Elena G. Bagryanskaya、Yuri P. Tsentalovich、Vladimir A. Reznikov、Thomas L. Clanton、Valery V. Khramtsov
DOI:10.1021/jp049026t
日期:2004.7.1
The reactions of the reversible addition of thiols and thiyl radicals to the nitronespintraps DMPO (5,5-dimethyl-1-pyrroline N-oxide) and DEPMPO (5-diethoxyphosphoryl-5-methyl-1-pyrroline N-oxide) are described. Addition of the thiols to the double CN bond of the nitrones results in the formation of the corresponding hydroxylamines, measured using 31P NMR and the phosphorus-containing trap DEPMPO
METHOD OF TREATING CONDITIIONS WITH KINASE INHIBITORS
申请人:ALLERGAN, INC.
公开号:US20130237537A1
公开(公告)日:2013-09-12
The present invention relates to a method of treating ophthalmic diseases and conditions, e.g. diabetic retinopathy, age-related macular degeneration, retinopathy of prematurity, etc., in a subject comprising administering to said subject a therapeutically effective amount of at least one compound of formula I
or a prodrug, pharmaceutically acceptable salt, racemic mixtures or enantiomers of said compound. The compounds of formula I are capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
Spin-Trapping Evidence for the Formation of Alkyl, Alkoxyl, and Alkylperoxyl Radicals in the Reactions of Dialkylzincs with Oxygen
作者:Julien Maury、Laurence Feray、Samantha Bazin、Jean-Louis Clément、Sylvain R. A. Marque、Didier Siri、Michèle P. Bertrand
DOI:10.1002/chem.201002616
日期:2011.2.1
and nBu2Zn) with oxygen have been investigated by EPR spectroscopy using spin‐trapping techniques. The use of 5‐diethoxyphosphoryl‐5‐methyl‐1‐pyrrroline N‐oxide (DEPMPO) as a spin‐trap has allowed the involvement of alkyl, alkylperoxyl, and alkoxylradicals in this process to be probed for the first time. The relative ratio of the corresponding spin‐adducts depends strongly on the nature of the R group
The present invention relates to compounds of formulae I and II
wherein the variables are as defined herein. These compounds are capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
Using a competitive spintrapping method, relative spintrapping rates were quantified for various short-lived radicals (methyl, ethyl, and phenyl radicals). High static pressure was applied to the competitive spin-trapping system by employing high-pressure electron spin resonance (ESR) equipment. Under high pressure (490 bar), spintrapping rate constants for alkyl and phenyl radicals increased by