申请人:Janssen Pharmaceutica N.V.
公开号:US05543570A1
公开(公告)日:1996-08-06
Process for preparing enantiomerically pure imidazo[4,5,1 -jk][1,4]benzodiazepin -2(1H)-thiones of formula ##STR1## starting from 2,6-dihalo-3-nitrobenzyl derivatives (II) and suitably N-protected 1,2-diaminopropanes (III) ##STR2## Novel enantiomerically pure intermediates of formula (III) and (IV) are prepared in the course of the present process.
制备对映纯的式为##STR1##的咪唑[4,5,1-jk][1,4]苯二氮平-2(1H)-硫酮的过程,起始物为2,6-二卤-3-硝基苯基衍生物(II)和适当的N保护的1,2-二氨基丙烷(III)##STR2##在这个过程中制备了新的对映纯中间体,式为(III)和(IV)。