(3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl N-[(1S,2R)-3-((5-amino-2,2-dimethylpentyl)[3-(methylamino)phenyl]sulfonylamino)-1-benzyl-2-hydroxypropyl]carbamate 、
N,N-二异丙基乙胺 、
氯甲酸甲酯 以
四氢呋喃 为溶剂,
反应 18.0h,
以to afford 54 mg (98%) of the desired compound as a white foam的产率得到methyl N-[5-[[(2R,3S)-3-[[(3aS,4R,6aR)-2,3,3a,4,5,6a-hexahydrofuro[2,3-b]furan-4-yl]oxycarbonylamino]-2-hydroxy-4-phenyl-butyl]-[3-(methylamino)phenyl]sulfonyl-amino]-4,4-dimethyl-pentyl]carbamate