[EN] PROCESSES AND INTERMEDIATES FOR PREPARING A MACROCYCLIC PROTEASE INHIBITOR OF HCV<br/>[FR] PROCÉDÉS ET INTERMÉDIAIRES DE PRÉPARATION D'UN INHIBITEUR DE PROTÉASE MACROCYCLIQUE DE HCV
申请人:ORTHO MCNEIL JANSSEN PHARM
公开号:WO2011113859A1
公开(公告)日:2011-09-22
A process for preparing [(1R,2R)-4-oxo-1,2-cyclopentanedicarboxylic acid II, by the resolution of racemic 4-oxo-1,2-cyclopentanedicarboxylic acid (V), said process comprising: (a) reacting 4-oxo-1,2-cyclopentanedicarboxylic acid (V) with brucine or (1R,2S)-(-)- ephedrine, thus preparing the bis-brucine or bis-(1R,2S)-(-)-ephedrine salt of (V), and (b) precipitating selectively the bis-brucine or bis-(1R,2S)-(-)-ephedrine salt of (1R,2R)-4-oxo-1,2-cyclopentanedicarboxylic acid II, while the bis-brucine or bis- (1R,2S)-(-)-ephedrine salt of [(1S,2S)-4-oxo-1,2-cyclopentanedicarboxylic acid stays in solution; (c) liberating the acid II by removal of brucine or (1R,2S)-(-)-ephedrine from the precipitated salt obtained in step (b).
一种制备[(1R,2R)-4-氧代-1,2-环戊二羧酸II的方法,通过拆分外消旋4-氧代-1,2-环戊二羧酸(V)来实现,所述方法包括:(a)将4-氧代-1,2-环戊二羧酸(V)与布鲁辛或(1R,2S)-(-)-麻黄碱反应,从而制备(V)的双布鲁辛盐或双(1R,2S)-(-)-麻黄碱盐,并(b)在(V)的双布鲁辛盐或双(1R,2S)-(-)-麻黄碱盐中选择性地沉淀[(1R,2R)-4-氧代-1,2-环戊二羧酸II的盐,同时(V)的双布鲁辛盐或双(1R,2S)-(-)-麻黄碱盐保持在溶液中;(c)通过从步骤(b)中得到的沉淀盐中去除布鲁辛或(1R,2S)-(-)-麻黄碱来释放酸II。