ethyl {5-[2-(5-chloro-4-oxo-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidin]-1'-yl)-1,3-thiazol-5-yl]-2H-tetrazol-2-yl}acetate                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                生成                                                 
ethyl {5-[2-(5-chloro-4-hydroxy-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidin]-1'-yl)-1,3-thiazol-5-yl]-2H-tetrazol-2-yl}acetate