2-{(S)-3-[3-((R)-1-Azidomethyl-2-phenyl-ethyl)-ureido]-4-triisopropylsilanyloxy-butyl}-5-(methyl-prop-2-ynyl-carbamoyl)-furan-3,4-dicarboxylic acid dimethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
copper(l) iodide   、                                                                                                  
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 12.0h,
                                                                                                                以72%的产率得到(10R,14S)-10-Benzyl-3-methyl-2,12-dioxo-14-triisopropylsilanyloxymethyl-20-oxa-3,6,7,8,11,13-hexaaza-tricyclo[15.2.1.1
5,8]henicosa-1(19),5(21),6,17-tetraene-18,19-dicarboxylic acid dimethyl ester