3-[2-(piperidin-4-ylamino)-benzooxazol-5-yloxy]-propan-1-ol hydrochloride 、
4-(5-hydroxy-benzooxazol-2-ylamino)-piperidine-1-carboxylic acid tert-butyl ester 、
2-(3-溴丙氧基)四氢-2H-吡喃 、
potassium carbonate 以
N,N-二甲基甲酰胺 为溶剂,
以to give 4-{5-[3-(tetrahydro-pyran-2-yloxy)-propoxy]-benzooxazol-2-ylamino}-piperidine-1-carboxylic acid tert-butyl ester的产率得到4-{5-[3-(tetrahydro-pyran-2-yloxy)-propoxy]-benzooxazol-2-ylamino}-piperidine-1-carboxylic acid tert-butyl ester