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