N-oxy>ethyl>-phenoxy>-1-glycyl>-L-prolyl>-L-isoleucine 在
二苯基膦叠氮化物 、
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以31%的产率得到tert-butyl N-[2-[(3S,7S,10S,20S,24S,27S)-10,27-di(butan-2-yl)-14,31-bis[[tert-butyl(dimethyl)silyl]oxy]-23-[2-[(2-methylpropan-2-yl)oxycarbonylamino]acetyl]-8,11,25,28-tetraoxo-2,19-dioxa-6,9,12,23,26,29-hexazapentacyclo[30.2.2.215,18.03,7.020,24]octatriaconta-1(35),15,17,32(36),33,37-hexaen-6-yl]-2-oxoethyl]carbamate