[EN] SYNTHESIS OF LEVOMETHADONE HYDROCHLORIDE OR DEXTROMETHADONE HYDROCHLORIDE AND METHODS FOR USE THEREOF<br/>[FR] SYNTHÈSE DE CHLORHYDRATE DE LÉVOMÉTHADONE OU DE CHLORHYDRATE DE DEXTROMÉTHADONE ET LEURS MÉTHODES D'UTILISATION
申请人:CODY LABORATORIES INC
公开号:WO2017035224A1
公开(公告)日:2017-03-02
Highly efficient methods for synthesis of levomethadone hydrochloride or dextromethadone hydrochloride are provided starting from D-alanine, or L-alanine, respectively, with retention of configuration. Methods for treating a subject are provided comprising administering a composition comprising an effective amount of levomethadone hydrochloride having not more than 10 ppm dextromethadone.
SYNTHESIS OF LEVOMETHADONE HYDROCHLORIDE OR DEXTROMETHADONE HYDROCHLORIDE AND METHODS FOR USE THEREOF
申请人:Cody Laboratories, Inc.
公开号:US20190002394A1
公开(公告)日:2019-01-03
Highly efficient methods for synthesis of levomethadone hydrochloride or dextromethadone hydrochloride are provided starting from D-alanine, or L-alanine, respectively, with retention of configuration. Methods for treating a subject are provided comprising administering a composition comprising an effective amount of levomethadone hydrochloride having not more than 10 ppm dextromethadone.
Synthesis of levomethadone hydrochloride or dextromethadone hydrochloride and methods for use thereof
申请人:Cody Laboratories, Inc.
公开号:US10040752B2
公开(公告)日:2018-08-07
Highly efficient methods for synthesis of levomethadone hydrochloride or dextromethadone hydrochloride are provided starting from D-alanine, or L-alanine, respectively, with retention of configuration. Methods for treating a subject are provided comprising administering a composition comprising an effective amount of levomethadone hydrochloride having not more than 10 ppm dextromethadone.
A method for synthesizing levomethadone hydrochloride including producing (R)-2-(dimethylamino)propan-1-ol by reducing N,N-dimethyl-D-alanine using borax, forming (R)-1-chloro-N,N-dimethylpropane-2-amine hydrochloride by chlorinating the (R)-2-(dimethylamino)propan-1-ol, synthesizing levomethadone nitrile hydrochloride by mixing the (R)-1-chloro-N,N-dimethylpropane-2-amine and diphenylacetonitrile with potassium t-butoxide and producing levomethadone hydrochloride by exposing the levomethadone nitrile hydrochloride to a Grignard reagent.