(R)-tert-butyl 4-(7,8-difluoro-2-oxo-2,3-dihydro-1H-benzo[e][1,4]diazepin-4(5H)-yl)-4-oxo-1-(2,4,5-trifluorophenyl)butan-2-ylcarbamate 、
三氟乙酸 以
二氯甲烷 为溶剂,
以90%的产率得到(R)-4-(3-amino-4-(2,4,5-trifluorophenyl)butanoyl)-7,8-difluoro-4,5-dihydro-1H-benzo[e][1,4]diazepin-2(3H)-one trifluoroacetate