2-叔丁氧羰基氨基-4-氨基甲酰基丁酸 4-硝基苯酯 、 (S)-2-Amino-N
1-((R)-1-benzylsulfanylmethyl-2-{(S)-2-[(S)-1-(dimethylcarbamoylmethyl-carbamoyl)-3-methyl-butylcarbamoyl]-pyrrolidin-1-yl}-2-oxo-ethyl)-succinamide; compound with trifluoro-acetic acid 在
N-甲基吗啉 作用下,
以74%的产率得到Boc-Gln-Asn-Cys(Bzl)-Pro-Leu-Gly-N(CH3)2