(R)-N-(cyclopropylmethyl)pyrrolidine-3-carboxamide 、
2-氟-5-醛基苯甲酸 、
2-(1h-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 以to afford the intermediate compound (R)—N-(cyclopropylmethyl)-1-(2-fluoro-5-formylbenzoyl)pyrrolidine-3-carboxamide (266 mg, 47%)的产率得到(R)-N-(cyclopropylmethyl)-1-(2-fluoro-5-formylbenzoyl)pyrrolidine-3-carboxamide