(S)-2'-amino-3-(6,6-dimethyl-3,6-dihydro-2H-pyran-4-yl)-1-fluoro-7-(2-fluoropyridin-3-yl)-1'-methyl-1'H-spiro[chromeno[2,3-c]pyridine-5,4'-pyrimidin]-6'(5'H)-one   、                                                                                      
(S)-2'-amino-3-(2,2-dimethyl-3,6-dihydro-2H-pyran-4-yl)-1-fluoro-7-(2-fluoropyridin-3-yl)-1'-methyl-1'H-spiro[chromeno[2,3-c]pyridine-5,4'-pyrimidin]-6'(5'H)-one   、                                                                                      
三氟乙酸                                                                                                                                                              在
                                                                                                                                         palladium 10% on activated carbon                                                                                                                                                                                                                               
氢气                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇   、                                                                                         
水   、                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 120.0h,
                                                                                                                生成                                                 (4'S)-2'-amino-3-(2,2-dimethyltetrahydro-2H-pyran-4-yl)-1-fluoro-7-(2-fluoropyridin-3-yl)-1'-methyl-1'H-spiro[chromeno[2,3-c]pyridine-5,4'-pyrimidin]-6'(5'H)-one 2,2,2-trifluoroacetate