2-((4S)-6-(4-chlorophenyl)-8-hydroxy-1-methyl-4H-benzo[f][1,2,4]triazolo[4,3-a][1,4]diazepin-4-yl)-N-ethylacetamide 、
2,2-dimethyl-4-oxo-3,8,11,14,17,20,23-heptaoxa-5-azapentacosan-25-yl methanesulfonate 在
potassium carbonate 作用下,
以
乙腈 为溶剂,
以45%的产率得到tert-butyl (20-(((4S)-6-(4-chlorophenyl)-4-(2-(ethylamino)-2-oxoethyl)-1-methyl-4H-benzo[f][1,2,4]triazolo[4,3-a][1,4]diazepin-8-yl)oxy)-3,6,9,12,15,18-hexaoxaicosyl)carbamate