(8S,11S,14S)-14-tert-butoxycarbonylamino-11-(3-amino-propyl)-5-fluoro-17-hydroxy-10,13-dioxo-9,12-diaza-tricyclo[14.3.1.12,6]henicosa-1(20),2(21),3,5,16,18-hexaene-8-carboxylic acid dihydrochloride 、
N-叔丁氧羰基-1,2-乙二胺 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,
以36%的产率得到tert-butyl {3-[(8S,11S,14S)-14-[(tert-butoxycarbonyl)amino]-8-[({2-[(tert-butoxycarbonyl)amino]ethyl}amino)carbonyl]-5-fluo-ro-17-hydroxy-10,13-dioxo-9,12-diazatricyclo[14.3.1.1
2,6]henicosa-1(20),2(21),3,5,16,18-hexaen-11-yl]propyl}carbamate