The present invention relates to an improved process for the preparation of [(1S,2R)-3-[[(4-aminophenyl)sulfonyl] (2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]-carbamic acid (3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl ester compound of formula-1 represented by the following structural formula:
本发明涉及一种制备[(1S,2R)-3-[[(4-
氨基苯基)磺酰基](2-甲基丙基)
氨基]-2-羟基-1-(苯基甲基)丙基]-
氨基甲酸 (3R,3aS,6aR)
六氢呋喃并[2,3-b]呋喃-3-基]式-1化合物的改进工艺,其结构式如下: