[EN] PROCESSES FOR THE PREPARATION OF DIASTEREOMERICALLY AND ENANTIOMERICALLY ENRICHED OXAZOLINES<br/>[FR] PROCÉDÉS DE PRÉPARATION D'OXAZOLINES DIASTÉRÉOISOMÉRIQUEMENT ET ÉNANTIOMÉRIQUEMENT ENRICHIES
申请人:QUÍMICA SINTÉTICA S A
公开号:WO2017081206A1
公开(公告)日:2017-05-18
The invention relates to an industrially viable and advantageous process for the preparation of (2S,3R)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid, having the following formula (I) generally known as Droxidopa, or of intermediates useful in the synthesis thereof.
[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF ELIGLUSTAT AND ITS INTERMEDIATE<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION D'ÉLIGLUSTAT ET DE SON INTERMÉDIAIRE
申请人:PIRAMAL ENTPR LTD
公开号:WO2020194138A1
公开(公告)日:2020-10-01
The present invention relates to an improved process for the preparation of N-((1R,2R)-1-(2,3- dihydrobenzo[b][1,4]dioxin-6-yl)-1-hydroxy-3-(pyrrolidin-1-yl)propan-2-yl)octanamide (A), which is known as ELIGLUSTAT and its pharmaceutically acceptable salts, comprising the formation of novel intermediate metal complex (III), which on hydrolysis in presence of acid provides amine compound (IV) (as described herein), which is treated with pyrrolidine and subsequently reduced to convert into Eliglustat (A).
[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF DROXIDOPA AND ITS INTERMEDIATE<br/>[FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DE DROXIDOPA ET SON INTERMÉDIAIRE
申请人:PIRAMAL ENTPR LTD
公开号:WO2017168313A1
公开(公告)日:2017-10-05
The present invention provides an improved process for preparation of L-threo-(2S,3R)-3-(3.4- dihydroxyphenyl)serine (I) (Droxidopa) and its salts; comprising (a) reaction of the aldehyde compound (III) (as described herein) with Metal complex (II) (as described herein), and (b) hydrolysis of the compound (IV) obtained from step (a) in presence of acid. The present invention also relates to a novel intermediates metal chiral complex (IV) for the preparation of Droxidopa.
PROCESSES FOR THE PREPARATION OF DIASTEREOMERICALLY AND ENANTIOMERICALLY ENRICHED OXAZOLINES
申请人:Quimica Sintetica, S.A.
公开号:EP3168208A1
公开(公告)日:2017-05-17
The invention relates to an industrially viable and advantageous process for the preparation of (2S,3R)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid, having the following formula:
generally known as Droxidopa, or of intermediates useful in the synthesis thereof.