ethyl 2-[[2-(acetoxymethyl)-3,8-diaza-8-benzyl-1-oxaspiro[bicyclo[4.5]decan-2-yl]methyl](benzyloxycarbonyl)amino]acetate 以
甲苯 为溶剂,
反应 2.0h,
以890 mg的产率得到6-(acetoxymethyl)-1,4-diaza-1'-benzyl-4-benzyloxycarbonyl-7-oxaspiro[bicyclo[4.3.0]nonane-8,4'-piperidin]-2-one