1-(3,4-dimethoxyphenyl)-2-[4-(2,2-dioxo-1,4-dihydro-2λ6,1,3-benzothiadiazin-3-yl)piperidin-1-yl]propan-1-one 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
以18.8%的产率得到threo-1-<2-(3,4-dimethoxyphenyl)-2-hydroxy-1-methylethyl>-4-(3,4-dihydro-2,2-dioxo-1H-2,1,3-benzothiadiazine-3-yl)piperidine