(1R,2R,4S)-4-(5-chloropyridine-2-sulfonyl)-2-(3,3-difluoropyrrolidine-1-carbonyl)cyclopentanecarboxylic acid   、                                                                                      
1-氨基环丙烷甲腈                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺   、                                                                                                  
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-)                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 16.0h,
                                                                                                                以44%的产率得到(1R,2R,4R)-4-(5-chloropyridine-2-sulfonyl)-2-(3,3-difluoropyrrolidine-1-carbonyl)cyclopentanecarboxylic acid (1-cyanocyclopropyl)amide