[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF PALIPERIDONE<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION DE PALIPÉRIDONE
申请人:WATSON LAB INC
公开号:WO2012134445A1
公开(公告)日:2012-10-04
The present invention relates to a process for preparation and purification of 3-[2-[4-(6- fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H- pyrido[1,2-a]pyrimidin-4-one, also known as paliperidone or 9-hydroxy risperidone.
Processes for the Preparation of Paliperidone and Pharmaceutically Acceptable Salts Thereof and Intermediates for Use in the Processes
申请人:Kankan Rajendra Narayanrao
公开号:US20100298565A1
公开(公告)日:2010-11-25
The present invention relates to novel compounds of formula (VIII) and (X), processes for their preparation and their use in the preparation of paliperidone or a salt thereof. There is also provided by the present invention novel processes for preparing intermediates for use in the preparation of paliperidone or a salt thereof, and novel processes for preparing paliperidone or a salt thereof.
PROCESS FOR THE PREPARATION OF PALIPERIDONE INTERMEDIATES
申请人:Prabahar Koilpillai Joseph
公开号:US20110087024A1
公开(公告)日:2011-04-14
The present invention relates to a process for the preparation of 3-(2-chloroethyl)-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrrido[1,2-a]-pyrimidin-4-one; and its use in the synthesis of paliperidone.
Process for the synthesis of CMHTP and intermediates thereof
申请人:Dolitzky Ben-Zion
公开号:US20080200676A1
公开(公告)日:2008-08-21
The present invention provides 3-benzyloxy-2-aminopyridine (BOPA), 3-(2-Hydroxyethyl)-2-methyl-9-hydoxy-4H-pyrido[1,2-a]pyrimidine-4-one (HMBP), 3-(2-Chloroethyl)-2-methyl-9-hydoxy-4H-pyrido[1,2-a]pyrimidine-4-one (CMHP) and 3-(2-chloroethyl)-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrrido[1,2-a]- pyrimidin-4-one (CMHTP) useful as intermediates for the preparation of paliperidone. The present invention also provides processes for preparing these intermediates and for preparing paliperidone.
The present invention relates to a process for preparation and purification of 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one, also known as paliperidone or 9-hydroxy risperidone. The invention also relates to the preparation of intermediates useful in the process.