(S,S)-6-(4-(5-(tert-butoxycarbonyl)-2,5-diazabicyclo[2.2.1]hept-2-yl)phenyl)-5-ethyl-2-oxo-1,2-dihydropyridine-3-carboxylic acid 、
三氟乙酸 以
二氯甲烷 为溶剂,
反应 0.5h,
以90%的产率得到6-[4-(2,5-diazabicyclo[2.2.1]hept-2-yl)phenyl]-5-ethyl-2-oxo-1,2-dihydropyridine-3-carboxylic acid trifluoroacetate