methyl (5S,8S,11S)-11-(2-azidoethyl)-8-isobutyl-3,6,9-trioxo-1-phenyl-5-(4-(prop-2-yn-1-yloxy)benzyl)-2-oxa-4,7,10-triazadodecan-12-oate 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 copper(I) bromide 作用下,
以
二氯甲烷 为溶剂,
反应 7.25h,
以71%的产率得到methyl (10S,13S,16S)-16-{[(benzyloxy)carbonyl]amino}-13-(2-methylpropyl)-12,15-dioxo-2-oxa-5,6,7,11,14-pentaazatricyclo[16.2.2.1^{4,7}]tricosa-1(20),4(23),5,18,21-pentaene-10-carboxylate