三氟乙酸 、
(R)-2-((S)-4-tert-Butoxycarbonyl-4-{4-[(2-methyl-4-oxo-3,4-dihydro-quinazolin-6-ylmethyl)-prop-2-ynyl-amino]-benzoylamino}-butyrylamino)-hexanedioic acid di-tert-butyl ester 反应 1.25h,
以97%的产率得到(R)-2-((S)-4-Carboxy-4-{4-[(2-methyl-4-oxo-3,4-dihydro-quinazolin-6-ylmethyl)-prop-2-ynyl-amino]-benzoylamino}-butyrylamino)-hexanedioic acid; compound with trifluoro-acetic acid