An improved method for the preparation of optically pure isomers of Formoterol is disclosed, particularly the (R,R)-isomer.
A method of preparation of substantially enantiomerically pure (R,R)-1-(4-Benzyloxy-3-nitro-phenyl)-2-[[2-(4-methoxy-phenyl)-1-methyl-ethyl]-(1-phenyl-ethyl)-amino]-ethanol to use in the production of (R,R)-Formoterol is also disclosed
揭示了一种改进的方法,用于制备光学纯的
福莫特罗异构体,特别是(R,R)-异构体。还揭示了一种制备基本对映异构体纯度高的(R,R)-1-(4-苄氧基-3-
硝基苯基)-2-[[2-(4-
甲氧基苯基)-1-甲基乙基]-(1-苯基乙基)-
氨基]-
乙醇的方法,用于生产(R,R)-
福莫特罗。