(2S,4R)-4-(2-chlorophenylsulfonyl)-N-(1-cyanocyclopropyl)pyrrolidine-2-carboxamide 、
lithium 1-(2,2-dimethyltetrahydro-2H-pyran-4-yl)azetidine-2-carboxylate 以yielded (2S,4R)-4-(2-chlorophenylsulfonyl)-N-(1-cyanocyclopropyl)-1-(1-(2,2-dimethyltetrahydro-2H-pyran-4-yl)azetidine-2-carbonyl)pyrrolidine-2-carboxamide 1:1 epimers as an off-white solid (quant.)的产率得到(2S,4R)-4-(2-chlorophenylsulfonyl)-N-(1-cyanocyclopropyl)-1-(1-(2,2-dimethyltetrahydro-2H-pyran-4-yl)azetidine-2-carbonyl)pyrrolidine-2-carboxamide