THE PRESENT INVENTION RELATES TO AN IMPROVED PROCESS FOR THE PREPARATION OF (1R,5S)-N-[3-AMINO-1-(CYCLOBUTYLMETHYL)-2,3-DIOXOPROPYL]-3-[2(S)-[[[(1,1-DIMETHYLETHYL)AMINO]CARBONYL] AMINO]-3,3-DIMETHYL-1-OXOBUTYL]-6,6-DIMETHYL-3-AZABICYCLO[3.1.0]HEXAN-2(S)-CARBOXAMIDE AND ITS INTERMEDIATES
本发明涉及一种改进的制备(1R,5S)-N-[3-
氨基-1-(
环丁基甲基)-2,3-二氧代丙基]-3-[2(S)-[[[(
1,1-二甲基乙基)
氨基]羰基]
氨基]-3,3-二甲基-1-氧代丁基]-
6,6-二甲基-3-氮杂双环[3.1.0]己烷-2(S)-羧酰胺及其中间体的改进工艺。