三氟乙酸 、
tert-butyl (2S)-2-[4-[N-[(3,4-dihydro-2-methyl-4-oxo-6-quinazolinyl)methyl]-N-prop-2-ynylamino]benzamido]-5-[(1S)-1,3-di(tert-butoxycarbonyl)propylamino]pentanoate 反应 1.25h,
以83%的产率得到(2S)-2-[4-[N-[(3,4-dihydro-2-methyl-4-oxo-6-quinazolinyl)methyl]-N-prop-2-ynylamino]benzamido]-5-[(1S)-1,3-di(carboxy)propylamino]pentanoic acid, trifluoroacetate salt