4-(5-trifluoromethyl-pyridin-2-yloxy)-phenyl chloroformate 、
2-(4-trifluoromethoxybenzyl)-2,5-diazabicyclo[2.2.1]heptane 以20%的产率得到5-(4-Trifluoromethoxybenzyl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylic acid 4-(5-trifluoromethylpyridin-2-yloxy)-phenyl ester