[EN] PROCESS FOR PREPARATION OF BRIVARACETAM INTERMEDIATES AND USE THEREOF [FR] PROCÉDÉ DE PRÉPARATION D'INTERMÉDIAIRES DE BRIVARACÉTAM ET LEUR UTILISATION
[EN] METHOD FOR PREPARATION OF ENANTIOMERICALLY ENRICHED AND/OR RACEMIC GAMMA-AMINO ACIDS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDES GAMMA-AMINO ÉNANTIOMÉRIQUEMENT ENRICHIS ET/OU RACÉMIQUES
申请人:LUPIN LTD
公开号:WO2011086565A1
公开(公告)日:2011-07-21
A process for preparation of enantiomerically enriched and/or racemic γ-amino acids, particularly those useful for preparing γ-amino acids that exhibit binding affinity to the human α2δ calcium channel subunit, including pregabalin and related compounds such as 3-n-propyl-4-aminobutyric acid.
PROCESS FOR THE PREPARATION OF 2-OXO-1-PYRROLIDINE DERIVATIVES
申请人:Surtees John
公开号:US20080009638A1
公开(公告)日:2008-01-10
The present invention relates to alternative processes for the preparation of 2-oxo-1-pyrrolidine derivatives of formula (I)
Particularly, the present invention relates to alternative processes for the synthesis of levetiracetam, brivaracetam and seletracetam.
[EN] METHOD FOR PREPARING BRIVARACETAM AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE BRIVARACÉTAM ET SES INTERMÉDIAIRES<br/>[ZH] 布瓦西坦的制备方法及其中间体
A process for the preparation of Brivaracetam, an anti-convulsion drug, is provided comprising Hofmann rearrangement of (S)-3-(2-(chloroamino)-2-oxoethyl) hexanoic acid, followed by cyclization resulting in (R)-4-propyl-pyrrolidin-2-one which on condensation with bromo butyric acid or ester followed by reaction with ammonia results in Brivaracetam.