6-(cyclopropylmethoxy)-5-(3,3-difluoroazetidin-1-yl)pyridine-2-carboxylic acid 、
Benzyl 3-amino-3-(2-ethoxy-2-oxoethyl)azetidine-1-carboxylate 、
2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 反应 24.0h,
以to obtain the title compound (134 mg, 81%) as light yellow oil的产率得到benzyl 3-[[6-(cyclopropylmethoxy)-5-(3,3-difluoroazetidin-1-yl)pyridine-2-carbonyl] amino]-3-(2-ethoxy-2-oxo-ethyl)azetidine-1-carboxylate