H-LETVSpTQELGC-OH; pT = phosphothreonine 、
mesna 反应 72.0h,
以54%的产率得到(4S)-4-[[(2S)-5-amino-2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-2-amino-4-methylpentanoyl]amino]-4-carboxybutanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylbutanoyl]amino]-3-hydroxypropanoyl]amino]-3-phosphonooxybutanoyl]amino]-5-oxopentanoyl]amino]-5-[[(2S)-4-methyl-1-oxo-1-[[2-oxo-2-(2-sulfoethylsulfanyl)ethyl]amino]pentan-2-yl]amino]-5-oxopentanoic acid