[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.
The present invention relates to cycloalkanone β-substituted alanine derivatives, a process for the preparation of cycloalkanone β-substituted alanine derivatives and the use of cycloalkanone β-substituted alanine derivatives in the preparation of enantiomerically enriched α-amino acids. Furthermore, the present invention relates to the preparation of pharmaceutically active products such as perindopril and ramipril using the novel cycloalkanone β-substituted alanine derivatives.
[EN] NOVEL CARBAMOYLGLYCINE DERIVATIVES<br/>[FR] NOUVEAUX DÉRIVÉS DE CARBAMOYLGLYCINE
申请人:DSM IP ASSETS BV
公开号:WO2009050041A1
公开(公告)日:2009-04-23
The present invention relates to carbamoylglycine derivatives, a process for the preparation of carbamoylglycine derivatives and the use of carbamoylglycine derivatives in the preparation of enantiomerically enriched α-amino acids. Furthermore, the present invention relates to the preparation of pharmaceutically active products such as perindopril and ramipril using the novel carbamoylglycine derivatives.
[EN] METHOD FOR THE SYNTHESIS OF A RAMIPRIL INTERMEDIATE<br/>[FR] PROCÉDÉ POUR LA SYNTHÈSE D'UN INTERMÉDIAIRE DU RAMIPRIL
申请人:DSM IP ASSETS BV
公开号:WO2010049401A1
公开(公告)日:2010-05-06
The present invention relates to a process for the preparation of octahydrocyclopenta[b]pyrrole-2-carboxylic acid and esters thereof of general formula (1) in the presence of a cobalt and/or nickel comprising catalyst and to the use of compounds of general formula (1) in the synthesis of ramipril.