(S,S)-{[2-{[2-(Bis-tert-butoxycarbonylmethyl-amino)-propyl]-tert-butoxycarbonylmethyl-amino}-1-(4-nitro-benzyl)-ethyl]-tert-butoxycarbonylmethyl-amino}-acetic acid tert-butyl ester 在
palladium 10% on activated carbon
氢气 作用下,
以
异丙醇 为溶剂,
反应 5.0h,
以81%的产率得到(S,S)-{[2-(4-amino-phenyl)-1-({[2-(bis-tert-butoxycarbonylmethyl-amino)-propyl]-tert-butoxycarbonylmethyl-amino}-methyl)-ethyl]-tert-butoxycarbonylmethyl-amino}-acetic acid tert-butyl ester