ethyl (1'S,3S,4'R,6'S,7'Z,14'S)-9-methoxy-14'-[(2-methylpropan-2-yl)oxycarbonylamino]-1,2',15'-trioxo-5-propan-2-ylspiro[2H-pyrano[2,3-c]quinoline-3,18'-3,16-diazatricyclo[14.3.0.04,6]nonadec-7-ene]-4'-carboxylate 在
sodium tetrahydroborate 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
反应 1.0h,
以98%的产率得到ethyl (1'S,3S,4'R,6'S,7'Z,14'S)-1-hydroxy-9-methoxy-14'-[(2-methylpropan-2-yl)oxycarbonylamino]-2',15'-dioxo-5-propan-2-ylspiro[1,2-dihydropyrano[2,3-c]quinoline-3,18'-3,16-diazatricyclo[14.3.0.04,6]nonadec-7-ene]-4'-carboxylate