[EN] IMPROVED PREPARING METHOD OF (S)-OMEPRAZOLE FROM OMEPRAZOLE RACEMATE USING OPTICAL RESOLUTION AGENT [FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DE (S)-OMÉPRAZOLE À PARTIR D'UN RACÉMATE D'OMÉPRAZOLE À L'AIDE D'UN AGENT DE RÉSOLUTION OPTIQUE
[EN] IMPROVED PREPARING METHOD OF (S)-OMEPRAZOLE FROM OMEPRAZOLE RACEMATE USING OPTICAL RESOLUTION AGENT [FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DE (S)-OMÉPRAZOLE À PARTIR D'UN RACÉMATE D'OMÉPRAZOLE À L'AIDE D'UN AGENT DE RÉSOLUTION OPTIQUE
Metal-Free Synthesis of the Methanol Solvate of (<i>S</i>)-Omeprazole Potassium Salt Using (1<i>R</i>)-(−)-10-Camphorsulfonyloxaziridine: Oxidation Process Development and Optical Purity Enhancement Strategy
作者:Christine Delsarte、Romuald Santraine、Baptiste Fours、Laurent Petit
DOI:10.1021/acs.oprd.7b00362
日期:2018.3.16
The results of our process development studies to synthesize the methanol solvate of (S)-omeprazole potassium salt (1) through the enantioselective oxidation of pyrmetazole (2) using (1R)-(−)-10-camphorsulfonyloxaziridine (3) are reported. Opticalpurity enhancement was achieved by means of a reslurry from methanol, the rationale and development details of which are also described.
[EN] PROCESSES FOR THE PREPARATION OF SUBSTITUTED SULFOXIDES<br/>[FR] PROCEDES DE PREPARATION DE SULFOXYDES SUBSTITUES
申请人:RANBAXY LAB LTD
公开号:WO2006040635A1
公开(公告)日:2006-04-20
The present invention relates to a process for enantioselective synthesis of substituted pyridinylmethyl sulfinyl-benzimidazole of compound of Formula (I). The process includes enantioselective catalytic oxidation of a substituted pyridinylmethyl prochiral sulfide derivative of compound of Formula (II) with an oxidizing agent in the presence of a chiral transition metal complex and a base in the absence of an organic solvent.
[EN] A PROCESS FOR PREPARATION OF OPTICALLY PURE OR OPTICALLY ENRICHED SULFOXIDE COMPOUNDS, INCLUDING AMORPHOUS ESOMEPRAZOLE AND SALTS THEREOF<br/>[FR] PROCEDE DE PREPARATION DE COMPOSES SULFOXYDE OPTIQUEMENT PURS OU OPTIQUEMENT ENRICHIS, NOTAMMENT DE L'ESOMEPRAZOLE AMORPHE ET SES SELS
申请人:REDDYS LAB LTD DR
公开号:WO2004002982A3
公开(公告)日:2004-06-10
Resolution of Omeprazole Using Coupled Preferential Crystallization: Efficient Separation of a Nonracemizable Conglomerate Salt under Near-Equilibrium Conditions
作者:Jason E. Hein、Blessing Huynh Cao、Maarten W. van der Meijden、Michel Leeman、Richard M. Kellogg
DOI:10.1021/op400081c
日期:2013.6.21
A facile and efficient resolution of omeprazole as the monopotassium salt diethanol solvate using coupled preferential crystallization has been developed. This approach uses small perturbations in solution-phase concentration to control the competing process of selective crystal growth while suppressing unwanted primary nucleation. The result is a selective crystallization technique that replaces the traditional batch-type isolation with a continuous process amenable to scale, which provides easy access to enantiopure conglomerate crystals.