(E)-methyl 4-[(4R,5R)-5-benzoyl-2,2-dimethyl-1,3-dioxolan-4-yl]-2-hydroxybut-3-enoate 在
L-Selectride 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
生成 (E)-methyl 2-hydroxy-4-{(4R,5S)-5-[(S)-hydroxy(phenyl)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl}but-3-enoate 、 (E)-methyl 2-hydroxy-4-{(4R,5S)-5-[(S)-hydroxy(phenyl)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl}but-3-enoate