CHEMICAL PROCESS FOR THE PREPARATION OF INTERMEDIATES TO OBTAIN N-FORMYL HYDROXYLAMINE COMPOUNDS
申请人:Novartis AG
公开号:EP1599440A2
公开(公告)日:2005-11-30
US7589216B2
申请人:——
公开号:US7589216B2
公开(公告)日:2009-09-15
[EN] CHEMICAL PROCESS<br/>[FR] PROCEDE CHIMIQUE
申请人:NOVARTIS AG
公开号:WO2004076053A2
公开(公告)日:2004-09-10
Improved processes for preparing intermediates useful for preparing antibacterial N-[1-oxo-2-alkyl-3-(N-hydroxyformamido)-propyl}-(carbonylamino-aryl or -heteroaryl)-azacyclo4-7alkanes or thiazacyclo4-7alkanes, which have one or more of the following features : (1) make use of a particular β-lactam intermediate; (2) which make use of a particular resolving agents, enantiomerically pure substituted propionic acids, especially (R)-2-butyl-3-hydroxy-propionic acid; (3) which avoid the use of hydrogen peroxide; and (4) which facilitate selective debenzylation reducing production of waste by-products. See Formula (I).