Process for preparing 3-[(4S)-8-bromo-1-methyl-6-(2-pyridinyl)-4H-imidazo[1,2-A][1,4]benzodiazepine-4-yl]propionic acid methyl ester or the benzene sulfonate salt thereof, and compounds useful in that process
申请人:PAION UK LIMITED
公开号:US10000464B2
公开(公告)日:2018-06-19
The invention concerns a new process for preparing 3-[(4S)-8-bromo-1-methyl-6-(2-pyridinyl)-4H-imidazo[1,2-a][1,4]benzodiazepine-4-yl]-propionic acid methyl ester
or
3-[(4S)-8-bromo-1-methyl-6-(2-pyridinyl)-4H-imidazo[1,2-a][1,4]benzodiazepine-4-yl]propionic acid methyl ester benzene sulfonate (P)
which comprises reacting 3-[(S)-7-bromo-2-((R and/or S)-2-hydroxy-propylamino)-5-pyridin-2-yl-3H-benzo[e][1,4]diazepin-3-yl]-propionic acid methyl ester of formula (EM)
with an oxidizing agent and optionally treating the reaction product under acidic conditions, such as to produce the compound of formula (F) or the compound (P), and new compounds useful as starting materials or as intermediates for performing that process.
本发明涉及一种制备 3-[(4S)-8-溴-1-甲基-6-(2-吡啶基)-4H-咪唑并[1,2-a][1,4]苯并二氮杂卓-4-基]丙酸甲酯的新工艺
或
3-[(4S)-8-溴-1-甲基-6-(2-吡啶基)-4H-咪唑并[1,2-a][1,4]苯并二氮杂卓-4-基]丙酸甲酯苯磺酸盐 (P)
其中包括使式(EM)的 3-[(S)-7-溴-2-((R 和/或 S)-2-羟基-丙氨基)-5-吡啶-2-基-3H-苯并[e][1,4]二氮杂卓-3-基]丙酸甲酯发生反应
与氧化剂反应,并可选择在酸性条件下处理反应产物,例如生成式 (F) 或化合物 (P),以及用作起始原料或中间体的新化合物。