Acetic acid 2-{(S)-5-benzo[1,3]dioxol-5-yl-3-[(S)-3-(3,4-difluoro-phenyl)-2-methyl-propionylamino]-2-oxo-2,3-dihydro-benzo[e][1,4]diazepin-1-yl}-ethyl ester 在
lithium hydroxide 作用下,
以
1,4-二氧六环 为溶剂,
以48%的产率得到(S)-N-[(S)-5-Benzo[1,3]dioxol-5-yl-1-(2-hydroxy-ethyl)-2-oxo-2,3-dihydro-1H-benzo[e][1,4]diazepin-3-yl]-3-(3,4-difluoro-phenyl)-2-methyl-propionamide