[EN] NOVEL METHOD FOR PREPARATION OF CRYSTALLINE PERINDOPRIL ERBUMINE<br/>[FR] NOUVELLE METHODE DE PREPARATION DE PERINDOPRIL ERBUMINE CRISTALLINE
申请人:LUPIN LTD
公开号:WO2005037788A1
公开(公告)日:2005-04-28
A process for preparation of crystalline perindopril erbumine of formula (II) which exhibits the X-ray (powder) diffraction pattern like that shown in the figure. The process comprises reacting a solution of perindopril of formula (I), in a solvent selected from N, N-dimethylformamide or dimethyl acetals of lower aliphatic aldehydes and ketones with tertiary butylamine and crystallization of the erbumine salt thus obtained by heating the reaction mixture to reflux, filtering hot, cooling gradually to 20 ºC to 30 ºC, and further cooling to 0º C to 15 ºC for 30 minutes to 1 hour and finally filtering off and drying the crystals.
[EN] PROCESS FOR PREPARATION OF PERINDOPRIL AND SALTS THEREOF<br/>[FR] PROCEDE DE PREPARATION DE PERINDOPRIL ET DE SELS DE CELUI-CI
申请人:LUPIN LTD
公开号:WO2004075889A1
公开(公告)日:2004-09-10
A process for preparation of perindopril of formula (II) and salts thereof which is simple, safe, convenient and cost-effective. The process involves reaction of compound of formula (I), wherein X is chlorine or bromine with compound of formula (VII) wherein A signifies that the six-membered ring of the bicyclic system is either saturated or unsaturated, followed by catalytic hydrogenation to give the perindopril of formula (II).
Process for preparation of perindopril and salts thereof
申请人:Datta Debashish
公开号:US20060276659A1
公开(公告)日:2006-12-07
A process for preparation of perindopril of formula (II) and salts thereof
which is simple, safe convenient and cost-effective.
The process involves reaction of compound of formula (I),
wherein X is chlorine or bromine with compound of formula (VII)
wherein A signifies that the six-membered ring of the bicyclic system is either saturated or unsaturated to give compound of formula (VIII),
wherein A is as defined above, followed by catalytic hydrogenation of the compound of formula (VIII) thus obtained to give the perindopril of formula (II). The above process for the manufacture of perindopril would specifically avoid the use of harmful chemicals like phosgene or costly coupling agents like dicyclohexylcarbodiimide and 1-hydroxybenxotriazole usually used for such manufacture. The process would also not require any intervention of a catalyst and does not require any alkaline or acidic reaction conditions. Importantly, the process provides for manufacture of perindopril with high stereoselectively giving perindopril (II) having (S)-configuration in all the five chiral centres of the molecule, conforming to pharmacoepeial specifications.
The invention also relates to a method for preparation of the compound of formula (I) and also to a method for preparation of N-[(S)-
1
-carbethoxybutyl]-(S)-alanine of formula (III) used in the process.
Novel method for preparation of crystalline perindopril erbumine
申请人:Singh Pal Girij
公开号:US20070149604A1
公开(公告)日:2007-06-28
A process for preparation of crystalline perindopril erbumine of formula (II)
which exhibits the X-ray (powder) diffraction pattern like that shown in FIG.
2
The process comprises reacting a solution of perindopril of formula (I),
in a solvent selected from N,N-dimethylformamide, dimethyl acetals of lower aliphatic aldehydes, dimethyl ketals of lower aliphatic ketones and 1,2-dialkoxyethane with tertiary butylamine and crystallization of the erbumine salt thus obtained by heating the reaction mixture to reflux, filtering hot, cooling gradually to 20° C. to 30° C., and further cooling to 0° C. to 15° C. for 30 minutes to 1 hour and finally filtering off and drying the crystals.
Method for preparation of crystalline perindopril erbumine
申请人:Lupin Ltd
公开号:US07456296B2
公开(公告)日:2008-11-25
A process for preparation of crystalline perindopril erbumine of formula (II)
which exhibits the X-ray (powder) diffraction pattern like that shown in FIG. 2
The process comprises reacting a solution of perindopril of formula (I),
in a solvent selected from N,N-dimethylformamide, dimethyl acetals of lower aliphatic aldehydes, dimethyl ketals of lower aliphatic ketones and 1,2-dialkoxyethane with tertiary butylamine and crystallization of the erbumine salt thus obtained by heating the reaction mixture to reflux, filtering hot, cooling gradually to 20° C. to 30° C., and further cooling to 0° C. to 15° C. for 30 minutes to 1 hour and finally filtering off and drying the crystals.