(S)-methyl 2-(tert-butoxycarbonylamino)-3-(3,5-diiodo-4-methoxyphenyl)propanoate 、
BOC-p-mercaptophenylalanine methyl ester 以
氨 为溶剂,
反应 1.0h,
以95%的产率得到(S)-3-{3,5-Bis-[4-((S)-2-tert-butoxycarbonylamino-2-methoxycarbonyl-ethyl)-phenylsulfanyl]-4-methoxy-phenyl}-2-tert-butoxycarbonylamino-propionic acid methyl ester