(+)-(1S,2S,5R)-8-phenylmenthyl (1S,3R,4R)-2-[(1R)-1-phenylethyl]-2-azabicyclo[2.2.1]hept-5-ene-3-carboxylate 、
三氟乙酸 以
乙醚 为溶剂,
以85%的产率得到(+)-(1S,3R,4R)-2-[(1R)-1-phenylethyl]-3-[(1S,2S,5R)-8-phenylneomenthyl-oxycarbonyl]-2-azabicyclo[2.2.1]hept-5-en-2-ammonium trifluoroacetate