Boc-Pro-Ala-Ile-Glu(OBzl)-Val-Leu-Gly-OPac 在
盐酸 、
溶剂黄146 作用下,
以95%的产率得到(S)-4-((S)-2-Methyl-1-{(S)-3-methyl-1-[(2-oxo-2-phenyl-ethoxycarbonylmethyl)-carbamoyl]-butylcarbamoyl}-propylcarbamoyl)-4-((2S,3S)-3-methyl-2-{(S)-2-[((S)-pyrrolidine-2-carbonyl)-amino]-propionylamino}-pentanoylamino)-butyric acid benzyl ester