Synthesis of optically active methadones, LAAM and bufuralol by lipase-catalysed acylations
摘要:
(R)- and (S)-Methadones and levo-alpha-acetylmethadol (LAAM) have been synthesised starting from lipase-catalysed acylation of dimethylaminopropan-2-ol. An approach to the synthesis of (R)-bufuralol is also presented. (C) 2003 Elsevier Science Ltd. All rights reserved.
[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.
Methadone chiral isolate as an improved pharmaceutical
申请人:Somberg John Charin
公开号:US20100010096A1
公开(公告)日:2010-01-14
Methadone is a frequently employed agent for the treatment of drug addiction and the treatment of pain. Methadone prolongs the cardiac action potential, which on the surface electrocardiogram is represented by QT prolongation. This QT prolongation is known to increase the risk for the development of cardiac arrhythmias, especially the form of ventricular tachycardia known as Torsade de Pointes. For this reason, the FDA has inserted a “black box” warning for potential life threatening arrhythmias. The invention described in this application is the surprising finding that the R-isomer of methadone causes less inhibition of the potassium channel, IKr and thus would have less of a chance of causing life threatening arrhythmias. What is claimed is a method of chirally separating methadone with one isomer having less QT prolongation and more analgesic action that would make a superior pharmacologic agent than the racemate R,S methadone.
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.
Pharmaceutical composition and method for treating disorders of the central nervous system
申请人:Galer S Bradley
公开号:US20060167032A1
公开(公告)日:2006-07-27
Disorders of the ventral nervous system (CNS) are treated by the administration of a GABA analog such as gabapentin or pregablin, an NMDA receptor antagonist such as dextromethorphan or d-methodone and, optionally, another pharmacologically active substance, e.g., one which is effective for the treatment of a CNS disorder.