The invention relates to a process for the preparation of 8-hydroxy-5-[(1R)-1-hydroxy-2 [[(1R)-2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]-2(1H)-quinolinone monohydrochloride of formula (I). Useful intermediates in the process are also disclosed.
本发明涉及一种制备式为(I)的8-羟基-5-[(1R)-1-羟基-2[[(1R)-2-(4-
甲氧基苯基)-1-甲基乙基]
氨基]乙基]-2(1H)-
喹啉酮单盐酸盐的方法。本方法还揭示了有用的中间体。