2-((S)-2-Azidomethyl-pyrrolidine-1-carbonyl)-5-[(S)-3-(3-methyl-3-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83%的产率得到dimethyl (3S,15S)-18-methyl-8,17-dioxo-15-[tri(propan-2-yl)silyloxymethyl]-24-oxa-1,7,16,18,21,22-hexazatetracyclo[18.2.1.19,12.03,7]tetracosa-9,11,20(23),21-tetraene-10,11-dicarboxylate