(1S,4S)-2,5-diaza-bicyclo[2.2.1]heptan-2-yl((1S,3R)-1-ethyl-3-((3S,4R)-3-methoxy-tetrahydro-2H-pyran-4-ylamino)cyclopentyl)methanone hydrochloride   、                                                                                      
2-氯-4-三氟甲基吡啶                                                                                                                                                              在
                                                                                                                                                                                 
三乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二甲基亚砜                                                                                  为溶剂,
                                                                                                                                                    反应 15.0h,
                                                                                                                以26%的产率得到1,5-anhydro-2,3-dideoxy-3-{[(1R,3S)-3-ethyl-3-({(1S,4S)-5-[4-(trifluoromethyl)pyridin-2-yl]-2,5-diazabicyclo[2.2.1]hept-2-yl}carbonyl)cyclopentyl]amino}-4-O-methyl-D-erythro-pentitol