tert-butyl (S)-2-((S)-2-((tert-butoxycarbonyl)amino)-3-(2,6-difluoro-4-hydroxyphenyl)propanoyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylate 、
三氟乙酸 反应 0.5h,
以93%的产率得到(S)-2-((S)-2-amino-3-(2,6-difluoro-4-hydroxyphenyl)propanoyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid compound with 2,2,2-trifluoroacetic acid (1:1)