5-(1-Fluorocyclobutyl)-4-(2,2,2-trifluoroethoxy)pyridine-2-carboxylic acid 、
2-(3-amino-1,1-dioxo-thietan-3-yl)acetamide 以isolated (16 mg, 21%)的产率得到N-[3-(2-amino-2-oxoethyl)-1,1-dioxothietan-3-yl]-5-(1-fluorocyclobutyl)-4-(2,2,2-trifluoroethoxy)pyridine-2-carboxamide