(8S,11S,14S)-17-(Benzyloxy)-14-{[(benzyloxy)carbonyl]amino}-11-(3-{[(benzyloxy)carbonyl]amino}propyl)-5-methyl-10,13-dioxo-9,12-diazatricyclo[14.3.1.12,6]henicosa-1(20),2(21),3,5,16,18-hexaene-8-carboxylic acid 、
N-苄氧羰基乙二胺盐酸盐 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 16.0h,
以62%的产率得到benzyl {3-[(8S,11S,14S)-17-benzyloxy-14-benzaloxycarbonylamino-8-{[(2-benzyloxycarbonylamino-ethyl)amino]carbonyl}-5-methyl-10,13-dioxo-9,12-diaza-tricyclo[14.3.1.1
2,6]-henicosa-1(20),2(21),3,5,16,18-hexaen-11-yl]propyl}carbamate