(2S,4R)-di-tert-butyl 4-{[(1R,4S)-7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl]methylsulfonyloxy}pyrrolidine-1,2-dicarboxylate                                                                                                                                                              在
                                                                                                                                                                                 
盐酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醚                                                                                  为溶剂,
                                                                                                                                                    反应 4.0h,
                                                                                                                以95%的产率得到(2S,4R)-4-{[(1R,4S)-7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl]methylsulfonyloxy}pyrrolidine-2-carboxylic acid hydrochloride