2-[4-(4-Chloro-phenyl)-4-hydroxy-3,3-dimethyl-piperidin-1-yl]-1-[(2R,5S)-2-(4-fluoro-benzyl)-5-methyl-morpholin-4-yl]-ethanone 在
dimethyl sulfide borane 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
以39%的产率得到4-(4-Chloro-phenyl)-1-{2-[(2R,5S)-2-(4-fluoro-benzyl)-5-methyl-morpholin-4-yl]-ethyl}-3,3-dimethyl-piperidin-4-ol