2-(boc-amino)-5-<1-(carbobenzoxymethyl)cyclohexyl>pentanoic acid 生成 2-[1-[4-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-amino-3-(4-ethoxyphenyl)propanoyl]amino]-3-phenylpropanoyl]amino]-3-methylbutanoyl]amino]-4-oxobutanoyl]amino]-5-methoxy-5-oxopentyl]cyclohexyl]acetic acid