5-cyclopropyl-4-(2,2,2-trifluoro-ethoxy)-pyridine-2-carboxylic acid 、
2-(3-amino-1,1-dioxo-thietan-3-yl)acetamide 以isolated (130 mg, 43%)的产率得到N-[3-(2-amino-2-oxoethyl)-1,1-dioxothietan-3-yl]-5-cyclopropyl-4-(2,2,2-trifluoroethoxy)pyridine-2-carboxamide