The present invention refers to processes for preparing (1S,3aR,6aS)-2-[(2Sv)-2-[[(2S)-2- Cyclohexyl-2-(pyrazine-2-carbonylamino)acetyl]amino]-3,3-dimethylbutanoyl]-N-[(3S)-1-(cyclopropylamino)-1,2-dioxohexan-3-yl]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c] pyrrol-1-carboxamid via novel cyclic anhydrides as intermediates. The cyclic anhydrides can easily be reacted with cyclopropylamine to provide the intermediates (S)-3-Amino-N-cyclopropyl-2,2-dialkoxyhexanamide and (S)-tert-Butyl (1-(cyclopropylamino)-2,2-dialkoxy-1-oxohexan-3-yl)carbamate. The present invention also refers to intermediates of the process for preparing telaprevir and processes for the synthesis of said intermediates.
本发明涉及使用新型环酐中间体制备(1S,3aR,6aS)-2-[(2Sv)-2-[[(2S)-2-环己基-2-(
吡嗪-2-羰基
氨基)乙酰]
氨基]-3,3-二甲基丁酰]-N-[(3S)-1-(环丙基
氨基)-1,2-二氧己烷-3-基]-3,3a,4,5,6,6a-六氢-1H-环戊[c]
吡咯-1-羧酰胺的方法。这些环酐中间体可以轻易地与
环丙基胺反应,提供中间体(S)-3-
氨基-N-环丙基-2,2-二烷氧基己酰胺和(S)-叔丁基(1-(环丙基
氨基)-2,2-二烷氧基-1-氧代己烷-3-基)
氨基甲酸酯。本发明还涉及用于制备特拉普雷韦中间体的方法以及合成该中间体的过程。