三氟乙酸 、
(R)-2-((S)-4-tert-Butoxycarbonyl-4-{4-[(2,7-dimethyl-4-oxo-3,4-dihydro-quinazolin-6-ylmethyl)-methyl-amino]-2-fluoro-benzoylamino}-butyrylamino)-pentanedioic acid di-tert-butyl ester 反应 1.25h,
以92%的产率得到(R)-2-((S)-4-Carboxy-4-{4-[(2,7-dimethyl-4-oxo-3,4-dihydro-quinazolin-6-ylmethyl)-methyl-amino]-2-fluoro-benzoylamino}-butyrylamino)-pentanedioic acid; compound with trifluoro-acetic acid