N-Boc-Tyr-[O(CH2)COOH]-OtBu 在
4-二甲氨基吡啶 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下,
以
二氯甲烷 为溶剂,
生成 (S)-2-Amino-3-{4-[(1S,3R)-1-((S)-2-tert-butylcarbamoyl-4-pyridin-3-ylmethyl-piperazin-1-ylmethyl)-3-((1S,2R)-2-hydroxy-indan-1-ylcarbamoyl)-4-phenyl-butoxycarbonylmethoxy]-phenyl}-propionic acid; compound with trifluoro-acetic acid