Regiochemical control of the ring opening of aziridines by means of chelating processes. Part 3: Regioselectivity of the opening reactions with methanol of remote O-substituted regio- and diastereoisomeric activated aziridines under condensed- and gas-phase operating conditions
作者:Paolo Crotti、Valeria Di Bussolo、Lucilla Favero、Franco Macchia、Gabriele Renzi、Graziella Roselli
DOI:10.1016/s0040-4020(02)00726-3
日期:2002.8
acid methanolysis in the condensedphase (cd-phase) and in the reaction with MeOH in the gas-phase using a gaseous acid (D3+) as the promoting agent. The results obtained in the opening process of the cis diastereoisomers indicate the constant incursion in the gasphase of D+(corresponding to H+)-mediated chelated bidentate species able to modify the regiochemical result found in the methanolysis in
Provided are pyrimidine compounds for inhibiting of Syk kinase, intermediates used in making such compounds, methods for their preparation, pharmaceutical compositions thereof, methods for inhibition Syk kinase activity, and methods for treating conditions mediated at least in part by Syk kinase activity.