5-(1-fluorocyclobutyl)-4-[(1S)-2,2,2-trifluoro-1-methyl-ethoxy]pyridine-2-carboxylic acid 、
2-(3-amino-1,1-dioxo-thietan-3-yl)acetamide 以isolated (19 mg, 49%)的产率得到N-[3-(2-amino-2-oxoethyl)-1,1-dioxothietan-3-yl]-5-(1-fluorocyclobutyl)-4-[(2S)-1,1,1-trifluoropropan-2-yl]oxypyridine-2-carboxamide