ENANTIOSELECTIVE SYNTHESIS OF (+) AND (-)-2-[1-(2,6-DICHLOROPHENOXY)-ETHYL]-1,3-DIAZACYCLOPENT-2-3ENE
申请人:Crooks Peter A.
公开号:US20100087657A1
公开(公告)日:2010-04-08
This application provides a method for the enantioselective synthesis of (+) and (−) lofexidine or 2-[1-(2,6)-dichlorophenoxy)-ethyl]-1,3-diazacyclopent-2-ene.
Two stereoisomeric imidazoline derivatives. Synthesis, optical, and .alpha.2-adrenoceptor activities
作者:Juergen Biedermann、Alicia Leon-Lomeli、Harald O. Borbe、Gerrit Prop
DOI:10.1021/jm00157a011
日期:1986.7
Two eight-step pathways for synthesizing the stereoisomeric compounds (-)-2-[1-(2,6-dichlorophenoxy)ethyl]-2-imidazoline hydrochloride ("levlofexidine" hydrochloride; (-)-lofexidine hydrochloride) and (+)-2-[1-(2,6-dichlorophenoxy)ethyl]-2-imidazoline hydrochloride ("dexlofexidine" hydrochloride; (+)-lofexidine hydrochloride) and the optical resolution of (+/-)-lofexidine are described. (-)-Lofexidine