OPTICALLY ACTIVE CARBAMATES, PROCESS FOR PREPARATION THEREOF AND USE THEREOF AS PHARMACEUTICAL INTERMEDIATES
申请人:Mezei Tibor
公开号:US20090221823A1
公开(公告)日:2009-09-03
The present invention is related to 1-[(4-chlorophenyl)-phenylmethyl]-4-(2,2,2-trichloroethoxycarbonyl)-piperazine of the Formula (IV) and optically isomers thereof, process for preparation thereof and the use of the compound of the Formula (IV) in the preparation of 1-(4-chlorophenyl)-phenylmethyl-piperazine and optical isomers and salts thereof. 1-(4-chlorophenyl)-phenylmethyl-piperazine and optical isomers thereof are important intermediates in the preparation of non-sedating antihistamine-type active pharmaceutical ingredients.
本发明涉及公式(IV)的1-[(4-氯苯基)-苯甲基]-4-(2,2,2-三氯乙氧羰基)-哌嗪及其光学异构体,其制备方法以及在制备1-(4-氯苯基)-苯甲基-哌嗪及其光学异构体和盐的活性药物成分中使用公式(IV)化合物。1-(4-氯苯基)-苯甲基-哌嗪及其光学异构体是非镇静型抗组胺药物成分的重要中间体。