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