{(E)-(R)-1-[(2S,5S)-5-((E)-(R)-1-Benzyloxycarbonylamino-5,5-dimethoxy-pent-2-enyl)-3,6-dioxo-piperazin-2-yl]-5,5-dimethoxy-pent-2-enyl}-carbamic acid benzyl ester 在
platinum(IV) oxide 氢气 作用下,
以
甲醇 为溶剂,
以98%的产率得到{(R)-1-[(2S,5S)-5-((R)-1-Benzyloxycarbonylamino-5,5-dimethoxy-pentyl)-3,6-dioxo-piperazin-2-yl]-5,5-dimethoxy-pentyl}-carbamic acid benzyl ester