The present invention relates to a process for the preparation of (3R,3aS,6aR)-hexahydrofuro [2,3-b] furan-3-yl (1S,2R)-3-[[(4-aminophenyl) sulfonyl] (isobutyl) amino]-1-benzyl-2-hydroxypropylcarbamate as well as intermediates for use in said process. More in particular the invention relates to processes for the preparation of (3R,3aS,6aR)-hexahydrofuro [2,3-b] furan-3-yl (1S,2R)-3-[[(4-aminophenyl) sulfonyl] (isobutyl) amino]-1-benzyl-2-hydroxypropylcarbamate which make use of 4-amino-N ((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-N-(isobutyl)benzene sulfonamide intermediate, and to processes amenable to industrial scaling up. (3R,3aS,6aR)-hexahydrofuro [2,3-b] furan-3-yl (1S,2R)-3-[[(4-aminophenyl) sulfonyl] (isobutyl) amino]-1-benzyl-2-hydroxypropylcarbamate is particularly useful as HIV protease inhibitors.
本发明涉及一种制备(3R,3aS,6aR)-六氢
呋喃[2,3-b]
呋喃-3-基(1S,2R)-3-[[(4-
氨基苯基)磺酰基](异丁基)
氨基]-1-苄基-2-羟基丙基碳酰胺的过程,以及用于该过程的中间体。更具体地说,本发明涉及使用4-
氨基-N((2R,3S)-3-
氨基-2-羟基-4-苯基丁基)-N-(异丁基)苯磺酰胺中间体制备(3R,3aS,6aR)-六氢
呋喃[2,3-b]
呋喃-3-基(1S,2R)-3-[[(4-
氨基苯基)磺酰基](异丁基)
氨基]-1-苄基-2-羟基丙基碳酰胺的过程,以及适合工业放大的过程。(3R,3aS,6aR)-六氢
呋喃[2,3-b]
呋喃-3-基(1S,2R)-3-[[(4-
氨基苯基)磺酰基](异丁基)
氨基]-1-苄基-2-羟基丙基碳酰胺作为HIV蛋白酶抑制剂特别有用。