Benzoic acid 4-((S)-2-tert-butoxycarbonylamino-2-{(S)-1-[(S)-1-(carbamoylmethyl-carbamoyl)-2-phenyl-ethylcarbamoyl]-ethylcarbamoyl}-ethyl)-2-fluoro-phenyl ester 在
palladium on activated charcoal
甲醇 、 ammonium formate 、
溶剂黄146 作用下,
生成
[(S)-1-{(S)-1-[(S)-1-(Carbamoylmethyl-carbamoyl)-2-phenyl-ethylcarbamoyl]-ethylcarbamoyl}-2-(3-fluoro-4-hydroxy-phenyl)-ethyl]-carbamic acid tert-butyl ester