2-((R)-1-Azidomethyl-2-phenyl-ethylcarbamoyl)-5-{(S)-3-[3-((R)-1-benzyl-prop-2-ynyl)-ureido]-4-triisopropylsilanyloxy-butyl}-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68%的产率得到(3R,12S,16R)-3,16-Dibenzyl-5,14-dioxo-12-triisopropylsilanyloxymethyl-21-oxa-1,4,13,15,18,19-hexaaza-tricyclo[15.2.1.1
6,9]henicosa-6,8,17(20),18-tetraene-7,8-dicarboxylic acid dimethyl ester