(2R)-N-[(1S)-2-methoxy-1-benzylethyl]-2-amino-2-(4-phenylphenyl)acetamide hydrochloride 、
3-(乙氧基羰基)-2-(2-甲基丙基)丙酸 、
1-羟基苯并三唑 、
1,2-二氯乙烷 、
N-甲基吗啉 以to yield 0.256 g (78%) of ethyl (3R)-3-[N-((1R){N-[(1S)-2-methoxy-1-benzylethyl]carbamoyl}(4-phenylphenyl)methyl)carbamoyl]-5-methylhexanoate的产率得到ethyl (3R)-3-[N-((1R){N-[(1S)-2-methoxy-1-benzylethyl]carbamoyl}(4-phenylphenyl)methyl)carbamoyl]-5-methylhexanoate