which was disclosed for the first time. The practicable racemization catalyzed by aluminumchloride was carried out in quantitative yield with 99% purity. The ICH-grade quality (S)-ketamine hydrochloride was obtained in 51.1% overall yield (14.0% without racemization) by chiral resolution with three times recycling of the mother liquors. The robust process of esketamine could be industrially scalable
[EN] KETAMINE PAMOATE AND USE THEREOF<br/>[FR] PAMOATE DE KÉTAMINE ET SON UTILISATION
申请人:ALAR PHARMACEUTICALS INC
公开号:WO2020143762A1
公开(公告)日:2020-07-16
Provided are pamoate salts of ketamine having a stoichiometry of 2: 1 of ketamine to pamoate, including R, S-ketamine pamoate, S-ketamine pamoate, or R-ketamine pamoate, and crystalline or amorphous forms of the pamoate salts, and having excellent safety and properties for pharmaceutical applications. Also provided are pharmaceutical compositions including the pamoate salts of ketamine and their uses in treating a CNS disease or serving as an anesthetic.
The first detailed description of the Lewis acid-catalyzed racemization of (R)-ketamine is reported. A process for racemization of the undesired (R)-ketamine enantiomer produced from the resolution for preparing the NMDA receptor antagonist (S)-ketamine was developed in quantitative yield with 99% chemical purity in the presence of a Lewis acid at 150 °C. Varying degrees of racemization were observed
Application Of R-ketamine And Salt Thereof As Pharmaceuticals
申请人:NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY
公开号:US20160220513A1
公开(公告)日:2016-08-04
Provided is a novel compound having rapid and long-lasting therapeutic effects on diseases exhibiting depressive symptoms. Specifically, provided are an agent for prevention and/or treatment of a depressive symptom, consisting of R(−)-ketamine or a pharmacologically acceptable salt thereof, and a pharmaceutical composition for prevention and/or treatment of a depressive symptom, comprising R(−)-ketamine or a pharmacologically acceptable salt thereof in an effective amount for reducing a depressive symptom, and being substantially free of S(+)-ketamine, and a pharmacologically acceptable salt thereof.