5-(3-fluorooxetan-3-yl)-4-[(1S)-2,2,2-trifluoro-1-methyl-ethoxy]pyridine-2-carboxylic acid 、 2,2-dimethyl-1-(5-methyl-1,3,4-oxadiazol-2-yl)propan-1-amine 以isolated (70 mg, 47%)的产率得到N-[2,2-dimethyl-1-(5-methyl-1,3,4-oxadiazol-2-yl)propyl]-5-(3-fluorooxetan-3-yl)-4-[(2S)-1,1,1-trifluoropropan-2-yl]oxypyridine-2-carboxamide