申请人:Janssen Pharmaceutica N.V.
公开号:US05463049A1
公开(公告)日:1995-10-31
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) prepared in the course of the present process.
制备具有公式##STR1##的立体纯的咪唑[4,5,1-jk][1,4]苯并二氮杂卓-2(1H)-硫酮的方法,从2,6-二卤代-3-硝基苄基衍生物(II)和适当的N-保护的1,2-二氨基丙烷(III)##STR2##开始。本过程中制备的新颖立体纯中间体为公式(III)和(IV)。