methyl (2S,7S,10S)-7'-bromo-15-hydroxy-1'-(methoxymethyl)-2',9-dioxo-10-(phenylmethoxycarbonylamino)-7-propan-2-ylspiro[17-oxa-5,8-diazatricyclo[10.3.1.13,6]heptadeca-1(15),3,5,12(16),13-pentaene-2,3'-indole]-4-carboxylate 、
氯甲基甲基醚 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
以88%的产率得到methyl (2S,7S,10S)-7'-bromo-15-(methoxymethoxy)-1'-(methoxymethyl)-2',9-dioxo-10-(phenylmethoxycarbonylamino)-7-propan-2-ylspiro[17-oxa-5,8-diazatricyclo[10.3.1.13,6]heptadeca-1(15),3,5,12(16),13-pentaene-2,3'-indole]-4-carboxylate