(2S,4R)-4-benzenesulfonyl-pyrrolidine-2-carboxylic acid cyanomethyl-amide hydrochloride 、
环己烷基甲醛 以to give (2S,4R)-4-benzenesulfonyl-1-cyclohexylmethyl-pyrrolidine-2-carboxylic acid cyanomethyl-amide as a white solid的产率得到(2S,4R)-4-benzenesulfonyl-1-cyclohexylmethyl-pyrrolidine-2-carboxylic acid cyanomethyl-amide