(3S,4S)-3-acetyl-4-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-1-(4-methoxy)phenyl-2-azetidinone 、
diisobutyl aluminum hydrate 、
二氯甲烷 生成 (3S,4S)-3-[(1R)- and (1S)-1-hydroxy]ethyl-4-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-1-(4-methoxy)phenyl-2-azetidinone 、 (1S)-1-hydroxylethyl-4-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-1-(4-methoxy)phenyl-2-azetidinone