、
Cbz-N,O-dimethyltyrosine-N-Boc-threonine-OH 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
以76%的产率得到benzyl (2S)-1-[(2S)-2-[[(2S)-2-[(3S,4R)-3-hydroxy-4-[[(2S,3R)-3-[(2S)-3-(4-methoxyphenyl)-2-[methyl(phenylmethoxycarbonyl)amino]propanoyl]oxy-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]-5-methylhexanoyl]oxy-3-methylbutanoyl]amino]-4-methylpentanoyl]pyrrolidine-2-carboxylate