dimethylthiazolo [5,4-b]pyridin-2-ylcarbonimidodithioate 、 (3S*,4S*)-3-(aminomethyl)-1-azabicyclo[2.2.1]heptan-3-ol dihydrochloride 以to afford (3R*,4S*)—N-(thiazolo[5,4-b]pyridin-2-yl)-4′H-1-azaspiro[bicyclo[2.2.1]heptane-3,5′-oxazol]-2′-amine (87.6 mg, 0.290 mmol, 67% yield)的产率得到(1R,3R,4S)-N-(thiazolo[5,4-b]pyridin-2-yl)-4'H-1-azaspiro[bicyclo[2.2.1]heptane-3,5'-oxazol]-2'-amine