{(S)-5-[(S)-2-((S)-3-tert-Butoxycarbonylamino-2-oxo-4-phenyl-butylamino)-3-phenyl-propionylamino]-5-carbamoyl-pentyl}-carbamic acid benzyl ester 在
sodium tetrahydroborate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 {(S)-5-[(S)-2-((S)-3-tert-Butoxycarbonylamino-2-hydroxy-4-phenyl-butylamino)-3-phenyl-propionylamino]-5-carbamoyl-pentyl}-carbamic acid benzyl ester