[EN] LOFEXIDINE ENANTIOMERS FOR USE AS A TREATMENT FOR CNS DISEASE AND PATHOLOGIES AND ITS CHIRAL SYNTHESIS<br/>[FR] ÉNANTIOMÈRES DE LOFEXIDINE EN VUE D'UNE UTILISATION EN TANT QUE TRAITEMENT DE MALADIE ET DE PATHOLOGIES DU SYSTÈME NERVEUX CENTRAL ET SA SYNTHÈSE CHIRALE
申请人:AGEAN LLC
公开号:WO2010016844A1
公开(公告)日:2010-02-11
The invention relates to methods for treatment of CNS disease and pathologies using non-racemic mixtures of lofexidine enantiomers. The invention also relates to processes for the manufacture of chirally pure enantiomers of lofexidine.
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.
A Scalable, Enantioselective Synthesis of the α<sub>2</sub>-Adrenergic Agonist, Lofexidine
作者:Ashish P. Vartak、Peter A. Crooks
DOI:10.1021/op8002689
日期:2009.5.15
A scalable and high-yielding synthetic route toward pure enantiomers of the alpha(2)-adrenergic agonist, lofexidine hydrochloride, is presented. Salient features include a rapid one-pot amide alkylation-imidazoline formation sequence on the carboxamide function of alpha-(2,6-dichlorophenoxy)propionamide, while preserving the sensitive configuration about the alpha-carbon of the resulting product. A means to accelerate the sluggish O-alkylation of the carboxamide function of alpha-(2,6-dichlorophenoxy)propionamide by Me3O+BF4- is also described, which may be of general applicabitity.