2-(5'-Methoxy-3',3'-dimethyl-6-nitrospiro[chromene-2,2'-indole]-1'-yl)ethyl 2-chloroacetate 、
2-(2-(2-(4-tritylphenoxy)acetamido)acetamido)acetic acid 在
potassium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 8.0h,
以65%的产率得到[2-[2-(5'-Methoxy-3',3'-dimethyl-6-nitrospiro[chromene-2,2'-indole]-1'-yl)ethoxy]-2-oxoethyl] 2-[[2-[[2-(4-tritylphenoxy)acetyl]amino]acetyl]amino]acetate