The present invention relates to a process for the preparation of (2S,4S,5S,7S)-N-(2- Carbamoyl-2-methylpropyl)-5-amino-4-hydroxy-2,7-diisopropyl-8-[4-methoxy-3-(3-methoxy propoxy )phenyl]-octanamide compound of formula- 1 and its pharmaceutically acceptable salts thereof. Further, relates to the processes for the preparation of (R)-4-(2-(halomethyl)-3- methylbutyl)-l-methoxy-2-(3-methoxypropoxy) benzene and (R)-2-(4-methoxy-3-(3-methoxy propoxy) benzyl)-3-methyIbutan-l-ol useful intermediates in the synthesis of compound of formula- 1.
本发明涉及一种制备(2S,4S,5S,7S)-N-(2-羰基-2-甲基丙基)-5-
氨基-
4-羟基-2,7-
二异丙基-8-[4-甲氧基-3-(3-甲氧基丙氧基)苯基]-辛酰胺化合物的方法,其
化学式为1,以及其在药学上可接受的盐。此外,涉及制备(R)-4-(2-(卤甲基)-3-甲基丁基)-1-甲氧基-2-(3-甲氧基丙氧基)苯和(R)-2-(4-甲氧基-3-(3-甲氧基丙氧基)苄基)-
3-甲基丁醇的方法,这些是化合物1合成中有用的中间体。