PROCESSES AND INTERMEDIATES FOR PREPARING A MACROCYCLIC PROTEASE INHIBITOR OF HCV
申请人:Janssen Pharmaceuticals, Inc.
公开号:EP3239129A1
公开(公告)日:2017-11-01
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).
一种通过外消旋 4-氧代-1,2-环戊烷二羧酸(V)的解析制备[(1R,2R)-4-氧代-1,2-环戊烷二羧酸 II]的工艺,所述工艺包括
(a) 将 4-氧代-1,2-环戊烷二羧酸(V)与布鲁氨酸或(1R,2S)-(-)-麻黄碱反应,从而制备 (V)的双布鲁氨酸盐或双(1R,2S)-(-)-麻黄碱盐,以及
(b) 选择性地析出(1R,2R)-4-氧代-1,2-环戊烷二羧酸 II 的双丁氨酸盐或双-(1R,2S)-(-)-麻黄碱盐,而[(1S,2S)-4-氧代-1,2-环戊烷二羧酸]的双丁氨酸盐或双-(1R,2S)-(-)-麻黄碱盐留在溶液中;
(c) 从步骤(b)得到的沉淀盐中除去布鲁氨酸或(1R,2S)-(-)-麻黄碱,从而释放出酸 II。