Provided herein are improved, convenient and industrially advantageous processes for the preparation of N-[2-hydroxy-5-[(1R)-1-hydroxy-2-[[(1R)-2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]phenyl]formamide (Arformoterol) or a pharmaceutically acceptable salt thereof, in high yield and purity. Provided further herein is an improved and industrially advantageous process for the preparation of a substantially enantiomerically pure arformoterol intermediate, (R)-4-methoxy-α-methyl-N-(phenylmethyl)benzeneethanamine.
本文提供了改进的、便捷的和在工业上具有优势的过程,用于制备N-[2-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]苯甲酰胺(阿
福莫特罗)或其药用可接受的盐,产率高,纯度高。此外,本文还提供了一种改进的、在工业上具有优势的过程,用于制备基本对映纯的阿
福莫特罗中间体(R)-4-甲氧基-α-甲基-N-(苯甲基)苯
乙胺。