Improved Process for Ranolazine: An Antianginal Agent
摘要:
An improved process has been developed for the active pharmaceutical ingredient, ranolazine with 99.9% purity and 47% overall yield (including three chemical reactions and one recrystallization). Formation and control of all the possible impurities is described. All the solvents used in the process were recovered and reused. The unreacted piperazine is recovered as piperazine monophosphate monohydrate salt.
A process for the preparation of Ranolazine (I) and its acid addition salts and the process for the preparation of compound of formula (7).
一种制备Ranolazine(I)及其酸加盐的方法,以及制备式(7)化合物的方法。
PREPARATION OF RANOLAZINE
申请人:Anumula Raghupathi Reddy
公开号:US20110151258A1
公开(公告)日:2011-06-23
Preparation of ranolazine and intermediates thereof, for use in pharmaceutical compositions comprising ranolazine.
制备拉诺拉嗪及其中间体,用于制备包含拉诺拉嗪的药物组合物。
HIGHLY PURE RANOLAZINE OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF
申请人:Athukuri Venkata Subbarao
公开号:US20110223213A1
公开(公告)日:2011-09-15
Provided herein is an impurity of ranolazine, 1-[4-[2-hydroxy-3-(2-methoxy-phenoxy)-propyl]-piperazin-1-yl]-3-(2-methoxy-phenoxy)-propan-2-ol (dimer impurity-3), and process for preparing and isolating thereof. Provided further herein is a highly pure ranolazine or a pharmaceutically acceptable salt thereof substantially free of dimer impurity-3, process for the preparation, and pharmaceutical compositions comprising highly pure ranolazine or a pharmaceutically acceptable salt thereof substantially free of dimer impurity-3.
A process for the preparation of Ranolazine (I) and its acid addition salts and the process for the preparation of compound of formula (7).
一种制备雷诺嗪(I)及其酸加成盐的工艺和制备式(7)化合物的工艺。
[EN] SUBSTITUTED ACETANILIDES AND BENZAMIDES FOR THE TREATMENT OF ASTHMA AND PULMONARY INFLAMMATION<br/>[FR] ACETANILIDES ET BENZAMIDES SUBSTITUES UTILISES DANS LE TRAITEMENT DE L'ASTHME ET DES INFLAMMATIONS PULMONAIRES